Update metricRouter.go

* cpustatMetric.go: Use derived values instead of absolute values

  The values in /proc/stat are absolute counters related to the boot
  time of the system. To obtain a utilization of the CPU, the changes
  in the counters must be derived according to time. To take only the
  absolute values leads to the fact that changes in the utilization,
  straight with larger values, do not become visible.

* Add new collector for /proc/schedstat

  The `schedstat` collector reads data from /proc/schedstat and calculates
  a load value, separated by hwthread. This might be useful to detect bad
  cpu pinning on shared nodes etc.

Co-authored-by: Michael Schwarz <post@michael-schwarz.name>

.github/ci-config.json

@@ -3,6 +3,6 @@
   "collectors" : ".github/ci-collectors.json",
   "receivers" : ".github/ci-receivers.json",
   "router" : ".github/ci-router.json",
-  "interval": 5,
+  "interval": "5s",
-  "duration": 1
+  "duration": "1s"
 }

.github/ci-sinks.json

@@ -1,6 +1,8 @@
 {
   "testoutput" : {
     "type" : "stdout",
-    "meta_as_tags" : true
+    "meta_as_tags" : [
+      "unit"
+    ]
   }
 }

.github/workflows/Release.yml

@@ -27,7 +27,9 @@ jobs:
 
     # Use dnf to install development packages
     - name: Install development packages
-      run: dnf --assumeyes group install "Development Tools" "RPM Development Tools"
+      run: |
+          dnf --assumeyes group install "Development Tools" "RPM Development Tools"
+          dnf --assumeyes install wget openssl-devel diffutils delve which
 
     # Checkout git repository and submodules
     # fetch-depth must be 0 to use git describe
@@ -40,7 +42,12 @@ jobs:
 
     # Use dnf to install build dependencies
     - name: Install build dependencies
-      run: dnf --assumeyes builddep scripts/cc-metric-collector.spec
+      run: |
+          wget -q http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/golang-1.18.2-1.module_el8.7.0+1173+5d37c0fd.x86_64.rpm \
+                  http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/golang-bin-1.18.2-1.module_el8.7.0+1173+5d37c0fd.x86_64.rpm \
+                  http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/golang-src-1.18.2-1.module_el8.7.0+1173+5d37c0fd.noarch.rpm \
+                  http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/go-toolset-1.18.2-1.module_el8.7.0+1173+5d37c0fd.x86_64.rpm
+          rpm -i go*.rpm
 
     - name: RPM build MetricCollector
       id: rpmbuild
@@ -90,7 +97,7 @@ jobs:
 
     # Use dnf to install development packages
     - name: Install development packages
-      run: dnf --assumeyes --disableplugin=subscription-manager install rpm-build go-srpm-macros rpm-build-libs rpm-libs gcc make python38 git
+      run: dnf --assumeyes --disableplugin=subscription-manager install rpm-build go-srpm-macros rpm-build-libs rpm-libs gcc make python38 git wget openssl-devel diffutils delve which
 
     # Checkout git repository and submodules
     # fetch-depth must be 0 to use git describe
@@ -103,7 +110,12 @@ jobs:
 
     # Use dnf to install build dependencies
     - name: Install build dependencies
-      run: dnf --assumeyes --disableplugin=subscription-manager builddep scripts/cc-metric-collector.spec
+      run: |
+          wget -q http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/golang-1.18.2-1.module_el8.7.0+1173+5d37c0fd.x86_64.rpm \
+                  http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/golang-bin-1.18.2-1.module_el8.7.0+1173+5d37c0fd.x86_64.rpm \
+                  http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/golang-src-1.18.2-1.module_el8.7.0+1173+5d37c0fd.noarch.rpm \
+                  http://mirror.centos.org/centos/8-stream/AppStream/x86_64/os/Packages/go-toolset-1.18.2-1.module_el8.7.0+1173+5d37c0fd.x86_64.rpm
+          rpm -i go*.rpm
 
     - name: RPM build MetricCollector
       id: rpmbuild
@@ -121,13 +133,63 @@ jobs:
         name: cc-metric-collector SRPM for UBI 8
         path: ${{ steps.rpmbuild.outputs.SRPM }}
 
+  #
+  # Build on Ubuntu 20.04 using official go package
+  #
+  Ubuntu-focal-build:
+    runs-on: ubuntu-latest
+    container: ubuntu:20.04
+    # The job outputs link to the outputs of the 'debrename' step
+    # Only job outputs can be used in child jobs
+    outputs:
+      deb : ${{steps.debrename.outputs.DEB}}
+    steps:
+    # Use apt to install development packages
+    - name: Install development packages
+      run: |
+          apt update && apt --assume-yes upgrade
+          apt --assume-yes install build-essential sed git wget bash
+    # Checkout git repository and submodules
+    # fetch-depth must be 0 to use git describe
+    # See: https://github.com/marketplace/actions/checkout
+    - name: Checkout
+      uses: actions/checkout@v2
+      with:
+        submodules: recursive
+        fetch-depth: 0
+    # Use official golang package
+    - name: Install Golang
+      run: |
+          wget -q https://go.dev/dl/go1.19.1.linux-amd64.tar.gz
+          tar -C /usr/local -xzf go1.19.1.linux-amd64.tar.gz
+          export PATH=/usr/local/go/bin:/usr/local/go/pkg/tool/linux_amd64:$PATH
+          go version
+    - name: DEB build MetricCollector
+      id: dpkg-build
+      run: |
+          export PATH=/usr/local/go/bin:/usr/local/go/pkg/tool/linux_amd64:$PATH
+          make DEB
+    - name: Rename DEB (add '_ubuntu20.04')
+      id: debrename
+      run: |
+        OLD_DEB_NAME=$(echo "${{steps.dpkg-build.outputs.DEB}}" | rev | cut -d '.' -f 2- | rev)
+        NEW_DEB_FILE="${OLD_DEB_NAME}_ubuntu20.04.deb"
+        mv "${{steps.dpkg-build.outputs.DEB}}" "${NEW_DEB_FILE}"
+        echo "::set-output name=DEB::${NEW_DEB_FILE}"
+    # See: https://github.com/actions/upload-artifact
+    - name: Save DEB as artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: cc-metric-collector DEB for Ubuntu 20.04
+        path: ${{ steps.debrename.outputs.DEB }}
+
   #
   # Create release with fresh RPMs
   #
   Release:
     runs-on: ubuntu-latest
     # We need the RPMs, so add dependency
-    needs: [AlmaLinux-RPM-build, UBI-8-RPM-build]
+    needs: [AlmaLinux-RPM-build, UBI-8-RPM-build, Ubuntu-focal-build]
 
     steps:
     # See: https://github.com/actions/download-artifact
@@ -149,6 +211,11 @@ jobs:
       with:
         name: cc-metric-collector SRPM for UBI 8
 
+    - name: Download Ubuntu 20.04 DEB
+      uses: actions/download-artifact@v2
+      with:
+        name: cc-metric-collector DEB for Ubuntu 20.04
+
     # The download actions do not publish the name of the downloaded file,
     # so we re-use the job outputs of the parent jobs. The files are all
     # downloaded to the current folder.
@@ -162,14 +229,17 @@ jobs:
         ALMA_85_SRPM=$(basename "${{ needs.AlmaLinux-RPM-build.outputs.srpm}}")
         UBI_8_RPM=$(basename "${{ needs.UBI-8-RPM-build.outputs.rpm}}")
         UBI_8_SRPM=$(basename "${{ needs.UBI-8-RPM-build.outputs.srpm}}")
+        U_2004_DEB=$(basename "${{ needs.Ubuntu-focal-build.outputs.deb}}")
         echo "ALMA_85_RPM::${ALMA_85_RPM}"
         echo "ALMA_85_SRPM::${ALMA_85_SRPM}"
         echo "UBI_8_RPM::${UBI_8_RPM}"
         echo "UBI_8_SRPM::${UBI_8_SRPM}"
+        echo "U_2004_DEB::${U_2004_DEB}"
         echo "::set-output name=ALMA_85_RPM::${ALMA_85_RPM}"
         echo "::set-output name=ALMA_85_SRPM::${ALMA_85_SRPM}"
         echo "::set-output name=UBI_8_RPM::${UBI_8_RPM}"
         echo "::set-output name=UBI_8_SRPM::${UBI_8_SRPM}"
+        echo "::set-output name=U_2004_DEB::${U_2004_DEB}"
 
     # See: https://github.com/softprops/action-gh-release
     - name: Release
@@ -182,3 +252,4 @@ jobs:
          ${{ steps.files.outputs.ALMA_85_SRPM }}
          ${{ steps.files.outputs.UBI_8_RPM }}
          ${{ steps.files.outputs.UBI_8_SRPM }}
+         ${{ steps.files.outputs.U_2004_DEB }}

.github/workflows/runonce.yml

@@ -8,10 +8,10 @@ on: push
 
 jobs:
   #
-  # Job build-1-17
+  # Job build-1-18
-  # Build on latest Ubuntu using golang version 1.17 
+  # Build on latest Ubuntu using golang version 1.18
   #
-  build-1-17:
+  build-1-18:
     runs-on: ubuntu-latest
     steps:
     # See: https://github.com/marketplace/actions/checkout
@@ -23,13 +23,9 @@ jobs:
 
     # See: https://github.com/marketplace/actions/setup-go-environment
     - name: Setup Golang
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: '^1.17.7'
+        go-version: '1.18.2'
-
-    # Install libganglia
-    - name: Setup Ganglia
-      run: sudo apt install ganglia-monitor libganglia1
 
     - name: Build MetricCollector
       run: make
@@ -38,10 +34,10 @@ jobs:
       run: ./cc-metric-collector --once --config .github/ci-config.json
 
   #
-  # Job build-1-16
+  # Job build-1-19
-  # Build on latest Ubuntu using golang version 1.16
+  # Build on latest Ubuntu using golang version 1.19
   #
-  build-1-16:
+  build-1-19:
     runs-on: ubuntu-latest
     steps:
     # See: https://github.com/marketplace/actions/checkout
@@ -53,13 +49,9 @@ jobs:
 
     # See: https://github.com/marketplace/actions/setup-go-environment
     - name: Setup Golang
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: '^1.16.7' # The version AlmaLinux 8.5 uses
+        go-version: '1.19'
-
-    # Install libganglia
-    - name: Setup Ganglia
-      run: sudo apt install ganglia-monitor libganglia1
 
     - name: Build MetricCollector
       run: make

Makefile

@@ -16,6 +16,7 @@ COMPONENT_DIRS   := collectors \
 			internal/multiChanTicker
 
 BINDIR = bin
+GOBIN = $(shell which go)
 
 
 .PHONY: all
@@ -23,8 +24,8 @@ all: $(APP)
 
 $(APP): $(GOSRC)
 	make -C collectors
-	go get
+	$(GOBIN) get
-	go build -o $(APP) $(GOSRC_APP)
+	$(GOBIN) build -o $(APP) $(GOSRC_APP)
 
 install: $(APP)
 	@WORKSPACE=$(PREFIX)
@@ -51,25 +52,25 @@ clean:
 
 .PHONY: fmt
 fmt:
-	go fmt $(GOSRC_COLLECTORS)
+	$(GOBIN) fmt $(GOSRC_COLLECTORS)
-	go fmt $(GOSRC_SINKS)
+	$(GOBIN) fmt $(GOSRC_SINKS)
-	go fmt $(GOSRC_RECEIVERS)
+	$(GOBIN) fmt $(GOSRC_RECEIVERS)
-	go fmt $(GOSRC_APP)
+	$(GOBIN) fmt $(GOSRC_APP)
-	@for F in $(GOSRC_INTERNAL); do go fmt $$F; done
+	@for F in $(GOSRC_INTERNAL); do $(GOBIN) fmt $$F; done
 
 
 # Examine Go source code and reports suspicious constructs
 .PHONY: vet
 vet:
-	go vet ./...
+	$(GOBIN) vet ./...
 
 
 # Run linter for the Go programming language.
 # Using static analysis, it finds bugs and performance issues, offers simplifications, and enforces style rules
 .PHONY: staticcheck
 staticcheck:
-	go install honnef.co/go/tools/cmd/staticcheck@latest
+	$(GOBIN) install honnef.co/go/tools/cmd/staticcheck@latest
-	$$(go env GOPATH)/bin/staticcheck ./...
+	$$($(GOBIN) env GOPATH)/bin/staticcheck ./...
 
 .ONESHELL:
 .PHONY: RPM

README.md

@@ -1,5 +1,6 @@
 # cc-metric-collector
-A node agent for measuring, processing and forwarding node level metrics. It is part of the ClusterCockpit ecosystem.
+
+A node agent for measuring, processing and forwarding node level metrics. It is part of the [ClusterCockpit ecosystem](./docs/introduction.md).
 
 The metric collector sends (and receives) metric in the [InfluxDB line protocol](https://docs.influxdata.com/influxdb/cloud/reference/syntax/line-protocol/) as it provides flexibility while providing a separation between tags (like index columns in relational databases) and fields (like data columns).
 
@@ -10,7 +11,7 @@ The receiver runs as a go routine side-by-side with the timer loop and asynchron
 # Configuration
 
 Configuration is implemented using a single json document that is distributed over network and may be persisted as file.
-Supported metrics are documented [here](https://github.com/ClusterCockpit/cc-specifications/blob/master/metrics/lineprotocol_alternative.md).
+Supported metrics are documented [here](https://github.com/ClusterCockpit/cc-specifications/blob/master/interfaces/lineprotocol/README.md).
 
 There is a main configuration file with basic settings that point to the other configuration files for the different components.
 
@@ -20,20 +21,20 @@ There is a main configuration file with basic settings that point to the other c
   "collectors" : "collectors.json",
   "receivers" : "receivers.json",
   "router" : "router.json",
-  "interval": 10,
+  "interval": "10s",
-  "duration": 1
+  "duration": "1s"
 }
 ```
 
-The `interval` defines how often the metrics should be read and send to the sink. The `duration` tells collectors how long one measurement has to take. This is important for some collectors, like the `likwid` collector.
+The `interval` defines how often the metrics should be read and send to the sink. The `duration` tells collectors how long one measurement has to take. This is important for some collectors, like the `likwid` collector. For more information, see [here](./docs/configuration.md).
 
 See the component READMEs for their configuration:
+
 * [`collectors`](./collectors/README.md)
 * [`sinks`](./sinks/README.md)
 * [`receivers`](./receivers/README.md)
 * [`router`](./internal/metricRouter/README.md)
 
-
 # Installation
 
 ```
@@ -43,6 +44,7 @@ $ go get (requires at least golang 1.16)
 $ make
 ```
 
+For more information, see [here](./docs/building.md).
 
 # Running
 
@@ -56,6 +58,7 @@ Usage of metric-collector:
   -once
     	Run all collectors only once
 ```
+
 # Scenarios
 
 The metric collector was designed with flexibility in mind, so it can be used in many scenarios. Here are a few:
@@ -93,6 +96,7 @@ flowchart TD
 ```
 
 # Contributing
+
 The ClusterCockpit ecosystem is designed to be used by different HPC computing centers. Since configurations and setups differ between the centers, the centers likely have to put some work into the cc-metric-collector to gather all desired metrics.
 
 You are free to open an issue to request a collector but we would also be happy about PRs.

cc-metric-collector.go

@@ -15,15 +15,15 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
 	mr "github.com/ClusterCockpit/cc-metric-collector/internal/metricRouter"
-	mct "github.com/ClusterCockpit/cc-metric-collector/internal/multiChanTicker"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+	mct "github.com/ClusterCockpit/cc-metric-collector/pkg/multiChanTicker"
 )
 
 type CentralConfigFile struct {
-	Interval            int    `json:"interval"`
+	Interval            string `json:"interval"`
-	Duration            int    `json:"duration"`
+	Duration            string `json:"duration"`
 	CollectorConfigFile string `json:"collectors"`
 	RouterConfigFile    string `json:"router"`
 	SinkConfigFile      string `json:"sinks"`
@@ -173,16 +173,36 @@ func mainFunc() int {
 		cclog.Error("Error reading configuration file ", rcfg.CliArgs["configfile"], ": ", err.Error())
 		return 1
 	}
-	if rcfg.ConfigFile.Interval <= 0 || time.Duration(rcfg.ConfigFile.Interval)*time.Second <= 0 {
+
+	// Properly use duration parser with inputs like '60s', '5m' or similar
+	if len(rcfg.ConfigFile.Interval) > 0 {
+		t, err := time.ParseDuration(rcfg.ConfigFile.Interval)
+		if err != nil {
+			cclog.Error("Configuration value 'interval' no valid duration")
+		}
+		rcfg.Interval = t
+		if rcfg.Interval == 0 {
 			cclog.Error("Configuration value 'interval' must be greater than zero")
 			return 1
 		}
-	rcfg.Interval = time.Duration(rcfg.ConfigFile.Interval) * time.Second
+	}
-	if rcfg.ConfigFile.Duration <= 0 || time.Duration(rcfg.ConfigFile.Duration)*time.Second <= 0 {
+
+	// Properly use duration parser with inputs like '60s', '5m' or similar
+	if len(rcfg.ConfigFile.Duration) > 0 {
+		t, err := time.ParseDuration(rcfg.ConfigFile.Duration)
+		if err != nil {
+			cclog.Error("Configuration value 'duration' no valid duration")
+		}
+		rcfg.Duration = t
+		if rcfg.Duration == 0 {
 			cclog.Error("Configuration value 'duration' must be greater than zero")
 			return 1
 		}
-	rcfg.Duration = time.Duration(rcfg.ConfigFile.Duration) * time.Second
+	}
+	if rcfg.Duration > rcfg.Interval {
+		cclog.Error("The interval should be greater than duration")
+		return 1
+	}
 
 	if len(rcfg.ConfigFile.RouterConfigFile) == 0 {
 		cclog.Error("Metric router configuration file must be set")
@@ -271,7 +291,7 @@ func mainFunc() int {
 
 	// Wait until one tick has passed. This is a workaround
 	if rcfg.CliArgs["once"] == "true" {
-		x := 1.2 * float64(rcfg.ConfigFile.Interval)
+		x := 1.2 * float64(rcfg.Interval.Seconds())
 		time.Sleep(time.Duration(int(x)) * time.Second)
 		shutdownSignal <- os.Interrupt
 	}

collectors.json

@@ -12,6 +12,7 @@
             "proc_total"
         ]
     },
+    "memstat": {},
     "netstat": {
         "include_devices": [
             "enp5s0"
@@ -33,5 +34,8 @@
                 "type-id": "1"
             }
         }
+    },
+    "topprocs": {
+        "num_procs": 5
     }
 }

collectors/Makefile

@@ -1,22 +1,28 @@
-
-all: likwid
-
-
 # LIKWID version
 LIKWID_VERSION = 5.2.1
+LIKWID_INSTALLED_FOLDER=$(shell dirname $(shell which likwid-topology 2>/dev/null) 2>/dev/null)
+
+LIKWID_FOLDER="$(shell pwd)/likwid"
+
+all: $(LIKWID_FOLDER)/likwid.h
 
 .ONESHELL:
-.PHONY: likwid
+.PHONY: $(LIKWID_FOLDER)/likwid.h
-likwid:
+$(LIKWID_FOLDER)/likwid.h:
-	INSTALL_FOLDER="$${PWD}/likwid"
+	if [ "$(LIKWID_INSTALLED_FOLDER)" != "" ]; then \
-	BUILD_FOLDER="$${PWD}/likwidbuild"
+		BASE="$(LIKWID_INSTALLED_FOLDER)/../include"; \
-	if [ -d $${INSTALL_FOLDER} ]; then rm -r $${INSTALL_FOLDER}; fi
+		mkdir -p $(LIKWID_FOLDER); \
-	mkdir --parents --verbose  $${INSTALL_FOLDER} $${BUILD_FOLDER}
+		cp $$BASE/*.h $(LIKWID_FOLDER); \
-	wget -P "$${BUILD_FOLDER}" ftp://ftp.rrze.uni-erlangen.de/mirrors/likwid/likwid-$(LIKWID_VERSION).tar.gz
+	else \
-	tar -C $${BUILD_FOLDER} -xf $${BUILD_FOLDER}/likwid-$(LIKWID_VERSION).tar.gz
+		BUILD_FOLDER="$${PWD}/likwidbuild"; \
-	install -Dpm 0644 $${BUILD_FOLDER}/likwid-$(LIKWID_VERSION)/src/includes/likwid*.h $${INSTALL_FOLDER}/
+		if [ -d $(LIKWID_FOLDER) ]; then rm -r $(LIKWID_FOLDER); fi; \
-	install -Dpm 0644 $${BUILD_FOLDER}/likwid-$(LIKWID_VERSION)/src/includes/bstrlib.h $${INSTALL_FOLDER}/
+		mkdir --parents --verbose  $(LIKWID_FOLDER) $${BUILD_FOLDER}; \
-	rm -r $${BUILD_FOLDER}
+		wget -P "$${BUILD_FOLDER}" http://ftp.rrze.uni-erlangen.de/mirrors/likwid/likwid-$(LIKWID_VERSION).tar.gz; \
+		tar -C $${BUILD_FOLDER} -xf $${BUILD_FOLDER}/likwid-$(LIKWID_VERSION).tar.gz; \
+		install -Dpm 0644 $${BUILD_FOLDER}/likwid-$(LIKWID_VERSION)/src/includes/likwid*.h $(LIKWID_FOLDER)/; \
+		install -Dpm 0644 $${BUILD_FOLDER}/likwid-$(LIKWID_VERSION)/src/includes/bstrlib.h $(LIKWID_FOLDER)/; \
+		rm -r $${BUILD_FOLDER}; \
+	fi
 
 
 clean:

collectors/README.md

@@ -35,10 +35,11 @@ In contrast to the configuration files for sinks and receivers, the collectors c
 * [`nfs4stat`](./nfs4Metric.md)
 * [`cpufreq`](./cpufreqMetric.md)
 * [`cpufreq_cpuinfo`](./cpufreqCpuinfoMetric.md)
-* [`numastat`](./numastatMetric.md)
+* [`numastats`](./numastatsMetric.md)
 * [`gpfs`](./gpfsMetric.md)
 * [`beegfs_meta`](./beegfsmetaMetric.md)
 * [`beegfs_storage`](./beegfsstorageMetric.md)
+* [`rocm_smi`](./rocmsmiMetric.md)
 
 ## Todos
 

collectors/beegfsmetaMetric.go

@@ -5,7 +5,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"os/exec"
 	"os/user"
@@ -14,8 +14,8 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const DEFAULT_BEEGFS_CMD = "beegfs-ctl"
@@ -55,6 +55,7 @@ func (m *BeegfsMetaCollector) Init(config json.RawMessage) error {
 
 	m.name = "BeegfsMetaCollector"
 	m.setup()
+	m.parallel = true
 	// Set default beegfs-ctl binary
 
 	m.config.Beegfs = DEFAULT_BEEGFS_CMD
@@ -114,7 +115,7 @@ func (m *BeegfsMetaCollector) Read(interval time.Duration, output chan lp.CCMetr
 		return
 	}
 	//get mounpoint
-	buffer, _ := ioutil.ReadFile(string("/proc/mounts"))
+	buffer, _ := os.ReadFile(string("/proc/mounts"))
 	mounts := strings.Split(string(buffer), "\n")
 	var mountpoints []string
 	for _, line := range mounts {
@@ -156,9 +157,9 @@ func (m *BeegfsMetaCollector) Read(interval time.Duration, output chan lp.CCMetr
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "BeegfsMetaCollector.Read(): Failed to execute command \"%s\": %s\n", cmd.String(), err.Error())
 			fmt.Fprintf(os.Stderr, "BeegfsMetaCollector.Read(): command exit code: \"%d\"\n", cmd.ProcessState.ExitCode())
-			data, _ := ioutil.ReadAll(cmdStderr)
+			data, _ := io.ReadAll(cmdStderr)
 			fmt.Fprintf(os.Stderr, "BeegfsMetaCollector.Read(): command stderr: \"%s\"\n", string(data))
-			data, _ = ioutil.ReadAll(cmdStdout)
+			data, _ = io.ReadAll(cmdStdout)
 			fmt.Fprintf(os.Stderr, "BeegfsMetaCollector.Read(): command stdout: \"%s\"\n", string(data))
 			return
 		}

collectors/beegfsstorageMetric.go

@@ -5,7 +5,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"os/exec"
 	"os/user"
@@ -14,8 +14,8 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 // Struct for the collector-specific JSON config
@@ -48,6 +48,7 @@ func (m *BeegfsStorageCollector) Init(config json.RawMessage) error {
 
 	m.name = "BeegfsStorageCollector"
 	m.setup()
+	m.parallel = true
 	// Set default beegfs-ctl binary
 
 	m.config.Beegfs = DEFAULT_BEEGFS_CMD
@@ -107,7 +108,7 @@ func (m *BeegfsStorageCollector) Read(interval time.Duration, output chan lp.CCM
 		return
 	}
 	//get mounpoint
-	buffer, _ := ioutil.ReadFile(string("/proc/mounts"))
+	buffer, _ := os.ReadFile(string("/proc/mounts"))
 	mounts := strings.Split(string(buffer), "\n")
 	var mountpoints []string
 	for _, line := range mounts {
@@ -148,9 +149,9 @@ func (m *BeegfsStorageCollector) Read(interval time.Duration, output chan lp.CCM
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "BeegfsStorageCollector.Read(): Failed to execute command \"%s\": %s\n", cmd.String(), err.Error())
 			fmt.Fprintf(os.Stderr, "BeegfsStorageCollector.Read(): command exit code: \"%d\"\n", cmd.ProcessState.ExitCode())
-			data, _ := ioutil.ReadAll(cmdStderr)
+			data, _ := io.ReadAll(cmdStderr)
 			fmt.Fprintf(os.Stderr, "BeegfsStorageCollector.Read(): command stderr: \"%s\"\n", string(data))
-			data, _ = ioutil.ReadAll(cmdStdout)
+			data, _ = io.ReadAll(cmdStdout)
 			fmt.Fprintf(os.Stderr, "BeegfsStorageCollector.Read(): command stdout: \"%s\"\n", string(data))
 			return
 		}

collectors/collectorManager.go

@@ -6,9 +6,9 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
-	mct "github.com/ClusterCockpit/cc-metric-collector/internal/multiChanTicker"
+	mct "github.com/ClusterCockpit/cc-metric-collector/pkg/multiChanTicker"
 )
 
 // Map of all available metric collectors
@@ -20,6 +20,7 @@ var AvailableCollectors = map[string]MetricCollector{
 	"netstat":         new(NetstatCollector),
 	"ibstat":          new(InfinibandCollector),
 	"lustrestat":      new(LustreCollector),
+	"lustre_jobstat":  new(LustreJobstatCollector),
 	"cpustat":         new(CpustatCollector),
 	"topprocs":        new(TopProcsCollector),
 	"nvidia":          new(NvidiaCollector),
@@ -36,17 +37,22 @@ var AvailableCollectors = map[string]MetricCollector{
 	"numastats":       new(NUMAStatsCollector),
 	"beegfs_meta":     new(BeegfsMetaCollector),
 	"beegfs_storage":  new(BeegfsStorageCollector),
+	"rocm_smi":        new(RocmSmiCollector),
+	"schedstat":       new(SchedstatCollector),
 }
 
 // Metric collector manager data structure
 type collectorManager struct {
-	collectors []MetricCollector          // List of metric collectors to use
+	collectors   []MetricCollector          // List of metric collectors to read in parallel
+	serial       []MetricCollector          // List of metric collectors to read serially
 	output       chan lp.CCMetric           // Output channels
 	done         chan bool                  // channel to finish / stop metric collector manager
 	ticker       mct.MultiChanTicker        // periodically ticking once each interval
 	duration     time.Duration              // duration (for metrics that measure over a given duration)
 	wg           *sync.WaitGroup            // wait group for all goroutines in cc-metric-collector
 	config       map[string]json.RawMessage // json encoded config for collector manager
+	collector_wg sync.WaitGroup             // internally used wait group for the parallel reading of collector
+	parallel_run bool                       // Flag whether the collectors are currently read in parallel
 }
 
 // Metric collector manager access functions
@@ -66,6 +72,7 @@ type CollectorManager interface {
 // Initialization is done for all configured collectors
 func (cm *collectorManager) Init(ticker mct.MultiChanTicker, duration time.Duration, wg *sync.WaitGroup, collectConfigFile string) error {
 	cm.collectors = make([]MetricCollector, 0)
+	cm.serial = make([]MetricCollector, 0)
 	cm.output = nil
 	cm.done = make(chan bool)
 	cm.wg = wg
@@ -100,7 +107,11 @@ func (cm *collectorManager) Init(ticker mct.MultiChanTicker, duration time.Durat
 			continue
 		}
 		cclog.ComponentDebug("CollectorManager", "ADD COLLECTOR", collector.Name())
+		if collector.Parallel() {
 			cm.collectors = append(cm.collectors, collector)
+		} else {
+			cm.serial = append(cm.serial, collector)
+		}
 	}
 	return nil
 }
@@ -116,6 +127,10 @@ func (cm *collectorManager) Start() {
 		// Collector manager is done
 		done := func() {
 			// close all metric collectors
+			if cm.parallel_run {
+				cm.collector_wg.Wait()
+				cm.parallel_run = false
+			}
 			for _, c := range cm.collectors {
 				c.Close()
 			}
@@ -130,7 +145,26 @@ func (cm *collectorManager) Start() {
 				done()
 				return
 			case t := <-tick:
+				cm.parallel_run = true
 				for _, c := range cm.collectors {
+					// Wait for done signal or execute the collector
+					select {
+					case <-cm.done:
+						done()
+						return
+					default:
+						// Read metrics from collector c via goroutine
+						cclog.ComponentDebug("CollectorManager", c.Name(), t)
+						cm.collector_wg.Add(1)
+						go func(myc MetricCollector) {
+							myc.Read(cm.duration, cm.output)
+							cm.collector_wg.Done()
+						}(c)
+					}
+				}
+				cm.collector_wg.Wait()
+				cm.parallel_run = false
+				for _, c := range cm.serial {
 					// Wait for done signal or execute the collector
 					select {
 					case <-cm.done:

collectors/cpufreqCpuinfoMetric.go

@@ -10,8 +10,8 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 //
@@ -48,6 +48,7 @@ func (m *CPUFreqCpuInfoCollector) Init(config json.RawMessage) error {
 	m.setup()
 
 	m.name = "CPUFreqCpuInfoCollector"
+	m.parallel = true
 	m.meta = map[string]string{
 		"source": m.name,
 		"group":  "CPU",
@@ -150,7 +151,7 @@ func (m *CPUFreqCpuInfoCollector) Init(config json.RawMessage) error {
 		t.numNonHT = numNonHT
 		t.numNonHT_int = numNonHT_int
 		t.tagSet = map[string]string{
-			"type":       "cpu",
+			"type":       "hwthread",
 			"type-id":    t.processor,
 			"package_id": t.physicalPackageID,
 		}

collectors/cpufreqCpuinfoMetric.md

@@ -4,7 +4,7 @@
   "cpufreq_cpuinfo": {}
 ```
 
-The `cpufreq_cpuinfo` collector reads the clock frequency from `/proc/cpuinfo` and outputs a handful **cpu** metrics.
+The `cpufreq_cpuinfo` collector reads the clock frequency from `/proc/cpuinfo` and outputs a handful **hwthread** metrics.
 
 Metrics:
 * `cpufreq`

collectors/cpufreqMetric.go

@@ -3,14 +3,14 @@ package collectors
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	"golang.org/x/sys/unix"
 )
 
@@ -53,6 +53,7 @@ func (m *CPUFreqCollector) Init(config json.RawMessage) error {
 
 	m.name = "CPUFreqCollector"
 	m.setup()
+	m.parallel = true
 	if len(config) > 0 {
 		err := json.Unmarshal(config, &m.config)
 		if err != nil {
@@ -62,7 +63,7 @@ func (m *CPUFreqCollector) Init(config json.RawMessage) error {
 	m.meta = map[string]string{
 		"source": m.name,
 		"group":  "CPU",
-		"unit":   "MHz",
+		"unit":   "Hz",
 	}
 
 	// Loop for all CPU directories
@@ -87,7 +88,7 @@ func (m *CPUFreqCollector) Init(config json.RawMessage) error {
 
 		// Read package ID
 		physicalPackageIDFile := filepath.Join(cpuDir, "topology", "physical_package_id")
-		line, err := ioutil.ReadFile(physicalPackageIDFile)
+		line, err := os.ReadFile(physicalPackageIDFile)
 		if err != nil {
 			return fmt.Errorf("unable to read physical package ID from file '%s': %v", physicalPackageIDFile, err)
 		}
@@ -99,7 +100,7 @@ func (m *CPUFreqCollector) Init(config json.RawMessage) error {
 
 		// Read core ID
 		coreIDFile := filepath.Join(cpuDir, "topology", "core_id")
-		line, err = ioutil.ReadFile(coreIDFile)
+		line, err = os.ReadFile(coreIDFile)
 		if err != nil {
 			return fmt.Errorf("unable to read core ID from file '%s': %v", coreIDFile, err)
 		}
@@ -161,7 +162,7 @@ func (m *CPUFreqCollector) Init(config json.RawMessage) error {
 		t.numNonHT = numNonHT
 		t.numNonHT_int = numNonHT_int
 		t.tagSet = map[string]string{
-			"type":       "cpu",
+			"type":       "hwthread",
 			"type-id":    t.processor,
 			"package_id": t.physicalPackageID,
 		}
@@ -187,7 +188,7 @@ func (m *CPUFreqCollector) Read(interval time.Duration, output chan lp.CCMetric)
 		}
 
 		// Read current frequency
-		line, err := ioutil.ReadFile(t.scalingCurFreqFile)
+		line, err := os.ReadFile(t.scalingCurFreqFile)
 		if err != nil {
 			cclog.ComponentError(
 				m.name,

collectors/cpufreqMetric.md

@@ -5,7 +5,7 @@
   }
 ```
 
-The `cpufreq` collector reads the clock frequency from `/sys/devices/system/cpu/cpu*/cpufreq` and outputs a handful **cpu** metrics.
+The `cpufreq` collector reads the clock frequency from `/sys/devices/system/cpu/cpu*/cpufreq` and outputs a handful **hwthread** metrics.
 
 Metrics:
 * `cpufreq`

collectors/cpustatMetric.go

@@ -9,8 +9,9 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+	sysconf "github.com/tklauser/go-sysconf"
 )
 
 const CPUSTATFILE = `/proc/stat`
@@ -22,14 +23,17 @@ type CpustatCollectorConfig struct {
 type CpustatCollector struct {
 	metricCollector
 	config        CpustatCollectorConfig
+	lastTimestamp time.Time // Store time stamp of last tick to derive values
 	matches       map[string]int
 	cputags       map[string]map[string]string
 	nodetags      map[string]string
+	olddata       map[string]map[string]int64
 }
 
 func (m *CpustatCollector) Init(config json.RawMessage) error {
 	m.name = "CpustatCollector"
 	m.setup()
+	m.parallel = true
 	m.meta = map[string]string{"source": m.name, "group": "CPU", "unit": "Percent"}
 	m.nodetags = map[string]string{"type": "node"}
 	if len(config) > 0 {
@@ -75,36 +79,48 @@ func (m *CpustatCollector) Init(config json.RawMessage) error {
 	// Pre-generate tags for all CPUs
 	num_cpus := 0
 	m.cputags = make(map[string]map[string]string)
+	m.olddata = make(map[string]map[string]int64)
 	scanner := bufio.NewScanner(file)
 	for scanner.Scan() {
 		line := scanner.Text()
 		linefields := strings.Fields(line)
-		if strings.HasPrefix(linefields[0], "cpu") && strings.Compare(linefields[0], "cpu") != 0 {
+		if strings.Compare(linefields[0], "cpu") == 0 {
+			m.olddata["cpu"] = make(map[string]int64)
+			for k, v := range m.matches {
+				m.olddata["cpu"][k], _ = strconv.ParseInt(linefields[v], 0, 64)
+			}
+		} else if strings.HasPrefix(linefields[0], "cpu") && strings.Compare(linefields[0], "cpu") != 0 {
 			cpustr := strings.TrimLeft(linefields[0], "cpu")
 			cpu, _ := strconv.Atoi(cpustr)
-			m.cputags[linefields[0]] = map[string]string{"type": "cpu", "type-id": fmt.Sprintf("%d", cpu)}
+			m.cputags[linefields[0]] = map[string]string{"type": "hwthread", "type-id": fmt.Sprintf("%d", cpu)}
+			m.olddata[linefields[0]] = make(map[string]int64)
+			for k, v := range m.matches {
+				m.olddata[linefields[0]][k], _ = strconv.ParseInt(linefields[v], 0, 64)
+			}
 			num_cpus++
 		}
 	}
+	m.lastTimestamp = time.Now()
 	m.init = true
 	return nil
 }
 
-func (m *CpustatCollector) parseStatLine(linefields []string, tags map[string]string, output chan lp.CCMetric) {
+func (m *CpustatCollector) parseStatLine(linefields []string, tags map[string]string, output chan lp.CCMetric, now time.Time, tsdelta time.Duration) {
 	values := make(map[string]float64)
-	total := 0.0
+	clktck, _ := sysconf.Sysconf(sysconf.SC_CLK_TCK)
 	for match, index := range m.matches {
 		if len(match) > 0 {
 			x, err := strconv.ParseInt(linefields[index], 0, 64)
 			if err == nil {
-				values[match] = float64(x)
+				vdiff := x - m.olddata[linefields[0]][match]
-				total += values[match]
+				m.olddata[linefields[0]][match] = x // Store new value for next run
+				values[match] = float64(vdiff) / float64(tsdelta.Seconds()) / float64(clktck)
 			}
 		}
 	}
-	t := time.Now()
+
 	for name, value := range values {
-		y, err := lp.New(name, tags, m.meta, map[string]interface{}{"value": (value * 100.0) / total}, t)
+		y, err := lp.New(name, tags, m.meta, map[string]interface{}{"value": value * 100}, now)
 		if err == nil {
 			output <- y
 		}
@@ -116,6 +132,9 @@ func (m *CpustatCollector) Read(interval time.Duration, output chan lp.CCMetric)
 		return
 	}
 	num_cpus := 0
+	now := time.Now()
+	tsdelta := now.Sub(m.lastTimestamp)
+
 	file, err := os.Open(string(CPUSTATFILE))
 	if err != nil {
 		cclog.ComponentError(m.name, err.Error())
@@ -127,9 +146,9 @@ func (m *CpustatCollector) Read(interval time.Duration, output chan lp.CCMetric)
 		line := scanner.Text()
 		linefields := strings.Fields(line)
 		if strings.Compare(linefields[0], "cpu") == 0 {
-			m.parseStatLine(linefields, m.nodetags, output)
+			m.parseStatLine(linefields, m.nodetags, output, now, tsdelta)
 		} else if strings.HasPrefix(linefields[0], "cpu") {
-			m.parseStatLine(linefields, m.cputags[linefields[0]], output)
+			m.parseStatLine(linefields, m.cputags[linefields[0]], output, now, tsdelta)
 			num_cpus++
 		}
 	}
@@ -138,11 +157,13 @@ func (m *CpustatCollector) Read(interval time.Duration, output chan lp.CCMetric)
 		m.nodetags,
 		m.meta,
 		map[string]interface{}{"value": int(num_cpus)},
-		time.Now(),
+		now,
 	)
 	if err == nil {
 		output <- num_cpus_metric
 	}
+
+	m.lastTimestamp = now
 }
 
 func (m *CpustatCollector) Close() {

collectors/customCmdMetric.go

@@ -3,13 +3,13 @@ package collectors
 import (
 	"encoding/json"
 	"errors"
-	"io/ioutil"
 	"log"
+	"os"
 	"os/exec"
 	"strings"
 	"time"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	influx "github.com/influxdata/line-protocol"
 )
 
@@ -33,6 +33,7 @@ type CustomCmdCollector struct {
 func (m *CustomCmdCollector) Init(config json.RawMessage) error {
 	var err error
 	m.name = "CustomCmdCollector"
+	m.parallel = true
 	m.meta = map[string]string{"source": m.name, "group": "Custom"}
 	if len(config) > 0 {
 		err = json.Unmarshal(config, &m.config)
@@ -52,7 +53,7 @@ func (m *CustomCmdCollector) Init(config json.RawMessage) error {
 		}
 	}
 	for _, f := range m.config.Files {
-		_, err = ioutil.ReadFile(f)
+		_, err = os.ReadFile(f)
 		if err == nil {
 			m.files = append(m.files, f)
 		} else {
@@ -105,7 +106,7 @@ func (m *CustomCmdCollector) Read(interval time.Duration, output chan lp.CCMetri
 		}
 	}
 	for _, file := range m.files {
-		buffer, err := ioutil.ReadFile(file)
+		buffer, err := os.ReadFile(file)
 		if err != nil {
 			log.Print(err)
 			return

collectors/diskstatMetric.go

@@ -3,14 +3,13 @@ package collectors
 import (
 	"bufio"
 	"encoding/json"
-	"fmt"
 	"os"
 	"strings"
 	"syscall"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 //	"log"
@@ -30,6 +29,7 @@ type DiskstatCollector struct {
 
 func (m *DiskstatCollector) Init(config json.RawMessage) error {
 	m.name = "DiskstatCollector"
+	m.parallel = true
 	m.meta = map[string]string{"source": m.name, "group": "Disk"}
 	m.setup()
 	if len(config) > 0 {
@@ -78,11 +78,17 @@ func (m *DiskstatCollector) Read(interval time.Duration, output chan lp.CCMetric
 			continue
 		}
 		path := strings.Replace(linefields[1], `\040`, " ", -1)
-		stat := syscall.Statfs_t{}
+		stat := syscall.Statfs_t{
+			Blocks: 0,
+			Bsize:  0,
+			Bfree:  0,
+		}
 		err := syscall.Statfs(path, &stat)
 		if err != nil {
-			fmt.Println(err.Error())
+			continue
-			return
+		}
+		if stat.Blocks == 0 || stat.Bsize == 0 {
+			continue
 		}
 		tags := map[string]string{"type": "node", "device": linefields[0]}
 		total := (stat.Blocks * uint64(stat.Bsize)) / uint64(1000000000)
@@ -97,11 +103,13 @@ func (m *DiskstatCollector) Read(interval time.Duration, output chan lp.CCMetric
 			y.AddMeta("unit", "GBytes")
 			output <- y
 		}
+		if total > 0 {
 			perc := (100 * (total - free)) / total
 			if perc > part_max_used {
 				part_max_used = perc
 			}
 		}
+	}
 	y, err := lp.New("part_max_used", map[string]string{"type": "node"}, m.meta, map[string]interface{}{"value": int(part_max_used)}, time.Now())
 	if err == nil {
 		y.AddMeta("unit", "percent")

collectors/gpfsMetric.go

@@ -5,7 +5,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"log"
 	"os/exec"
 	"os/user"
@@ -13,8 +13,8 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const DEFAULT_GPFS_CMD = "mmpmon"
@@ -46,6 +46,7 @@ func (m *GpfsCollector) Init(config json.RawMessage) error {
 	var err error
 	m.name = "GpfsCollector"
 	m.setup()
+	m.parallel = true
 
 	// Set default mmpmon binary
 	m.config.Mmpmon = DEFAULT_GPFS_CMD
@@ -70,6 +71,7 @@ func (m *GpfsCollector) Init(config json.RawMessage) error {
 	for _, fs := range m.config.ExcludeFilesystem {
 		m.skipFS[fs] = struct{}{}
 	}
+	m.lastState = make(map[string]GpfsCollectorLastState)
 
 	// GPFS / IBM Spectrum Scale file system statistics can only be queried by user root
 	user, err := user.Current()
@@ -116,8 +118,8 @@ func (m *GpfsCollector) Read(interval time.Duration, output chan lp.CCMetric) {
 	cmd.Stderr = cmdStderr
 	err := cmd.Run()
 	if err != nil {
-		dataStdErr, _ := ioutil.ReadAll(cmdStderr)
+		dataStdErr, _ := io.ReadAll(cmdStderr)
-		dataStdOut, _ := ioutil.ReadAll(cmdStdout)
+		dataStdOut, _ := io.ReadAll(cmdStdout)
 		cclog.ComponentError(
 			m.name,
 			fmt.Sprintf("Read(): Failed to execute command \"%s\": %v\n", cmd.String(), err),
@@ -162,13 +164,18 @@ func (m *GpfsCollector) Read(interval time.Duration, output chan lp.CCMetric) {
 			continue
 		}
 
+		// Add filesystem tag
 		m.tags["filesystem"] = filesystem
+
+		// Create initial last state
+		if m.config.SendBandwidths {
 			if _, ok := m.lastState[filesystem]; !ok {
 				m.lastState[filesystem] = GpfsCollectorLastState{
 					bytesRead:    -1,
 					bytesWritten: -1,
 				}
 			}
+		}
 
 		// return code
 		rc, err := strconv.Atoi(key_value["_rc_"])

collectors/infinibandMetric.go

@@ -2,11 +2,10 @@ package collectors
 
 import (
 	"fmt"
-	"io/ioutil"
 	"os"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	"golang.org/x/sys/unix"
 
 	"encoding/json"
@@ -18,11 +17,17 @@ import (
 
 const IB_BASEPATH = "/sys/class/infiniband/"
 
+type InfinibandCollectorMetric struct {
+	path  string
+	unit  string
+	scale int64
+}
+
 type InfinibandCollectorInfo struct {
 	LID              string                               // IB local Identifier (LID)
 	device           string                               // IB device
 	port             string                               // IB device port
-	portCounterFiles map[string]string // mapping counter name -> sysfs file
+	portCounterFiles map[string]InfinibandCollectorMetric // mapping counter name -> InfinibandCollectorMetric
 	tagSet           map[string]string                    // corresponding tag list
 	lastState        map[string]int64                     // State from last measurement
 }
@@ -49,6 +54,7 @@ func (m *InfinibandCollector) Init(config json.RawMessage) error {
 	var err error
 	m.name = "InfinibandCollector"
 	m.setup()
+	m.parallel = true
 	m.meta = map[string]string{
 		"source": m.name,
 		"group":  "Network",
@@ -78,7 +84,7 @@ func (m *InfinibandCollector) Init(config json.RawMessage) error {
 	for _, path := range ibDirs {
 
 		// Skip, when no LID is assigned
-		line, err := ioutil.ReadFile(filepath.Join(path, "lid"))
+		line, err := os.ReadFile(filepath.Join(path, "lid"))
 		if err != nil {
 			continue
 		}
@@ -106,16 +112,16 @@ func (m *InfinibandCollector) Init(config json.RawMessage) error {
 
 		// Check access to counter files
 		countersDir := filepath.Join(path, "counters")
-		portCounterFiles := map[string]string{
+		portCounterFiles := map[string]InfinibandCollectorMetric{
-			"ib_recv":      filepath.Join(countersDir, "port_rcv_data"),
+			"ib_recv":      {path: filepath.Join(countersDir, "port_rcv_data"), unit: "bytes", scale: 4},
-			"ib_xmit":      filepath.Join(countersDir, "port_xmit_data"),
+			"ib_xmit":      {path: filepath.Join(countersDir, "port_xmit_data"), unit: "bytes", scale: 4},
-			"ib_recv_pkts": filepath.Join(countersDir, "port_rcv_packets"),
+			"ib_recv_pkts": {path: filepath.Join(countersDir, "port_rcv_packets"), unit: "packets", scale: 1},
-			"ib_xmit_pkts": filepath.Join(countersDir, "port_xmit_packets"),
+			"ib_xmit_pkts": {path: filepath.Join(countersDir, "port_xmit_packets"), unit: "packets", scale: 1},
 		}
-		for _, counterFile := range portCounterFiles {
+		for _, counter := range portCounterFiles {
-			err := unix.Access(counterFile, unix.R_OK)
+			err := unix.Access(counter.path, unix.R_OK)
 			if err != nil {
-				return fmt.Errorf("unable to access %s: %v", counterFile, err)
+				return fmt.Errorf("unable to access %s: %v", counter.path, err)
 			}
 		}
 
@@ -165,14 +171,14 @@ func (m *InfinibandCollector) Read(interval time.Duration, output chan lp.CCMetr
 	m.lastTimestamp = now
 
 	for _, info := range m.info {
-		for counterName, counterFile := range info.portCounterFiles {
+		for counterName, counterDef := range info.portCounterFiles {
 
 			// Read counter file
-			line, err := ioutil.ReadFile(counterFile)
+			line, err := os.ReadFile(counterDef.path)
 			if err != nil {
 				cclog.ComponentError(
 					m.name,
-					fmt.Sprintf("Read(): Failed to read from file '%s': %v", counterFile, err))
+					fmt.Sprintf("Read(): Failed to read from file '%s': %v", counterDef.path, err))
 				continue
 			}
 			data := strings.TrimSpace(string(line))
@@ -185,10 +191,13 @@ func (m *InfinibandCollector) Read(interval time.Duration, output chan lp.CCMetr
 					fmt.Sprintf("Read(): Failed to convert Infininiband metrice %s='%s' to int64: %v", counterName, data, err))
 				continue
 			}
+			// Scale raw value
+			v *= counterDef.scale
 
 			// Send absolut values
 			if m.config.SendAbsoluteValues {
 				if y, err := lp.New(counterName, info.tagSet, m.meta, map[string]interface{}{"value": v}, now); err == nil {
+					y.AddMeta("unit", counterDef.unit)
 					output <- y
 				}
 			}
@@ -198,6 +207,7 @@ func (m *InfinibandCollector) Read(interval time.Duration, output chan lp.CCMetr
 				if info.lastState[counterName] >= 0 {
 					rate := float64((v - info.lastState[counterName])) / timeDiff
 					if y, err := lp.New(counterName+"_bw", info.tagSet, m.meta, map[string]interface{}{"value": rate}, now); err == nil {
+						y.AddMeta("unit", counterDef.unit+"/sec")
 						output <- y
 					}
 				}

collectors/iostatMetric.go

@@ -4,8 +4,8 @@ import (
 	"bufio"
 	"os"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 
 	//	"log"
 	"encoding/json"
@@ -37,6 +37,7 @@ type IOstatCollector struct {
 func (m *IOstatCollector) Init(config json.RawMessage) error {
 	var err error
 	m.name = "IOstatCollector"
+	m.parallel = true
 	m.meta = map[string]string{"source": m.name, "group": "Disk"}
 	m.setup()
 	if len(config) > 0 {

collectors/ipmiMetric.go

@@ -10,7 +10,7 @@ import (
 	"strings"
 	"time"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const IPMITOOL_PATH = `ipmitool`
@@ -34,6 +34,7 @@ type IpmiCollector struct {
 func (m *IpmiCollector) Init(config json.RawMessage) error {
 	m.name = "IpmiCollector"
 	m.setup()
+	m.parallel = true
 	m.meta = map[string]string{"source": m.name, "group": "IPMI"}
 	m.config.IpmitoolPath = string(IPMITOOL_PATH)
 	m.config.IpmisensorsPath = string(IPMISENSORS_PATH)

collectors/likwidMetric.go

@@ -12,18 +12,21 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
 	"math"
 	"os"
+	"os/signal"
+	"sort"
 	"strconv"
 	"strings"
+	"sync"
+	"syscall"
 	"time"
 	"unsafe"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
-	topo "github.com/ClusterCockpit/cc-metric-collector/internal/ccTopology"
 	agg "github.com/ClusterCockpit/cc-metric-collector/internal/metricAggregator"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+	topo "github.com/ClusterCockpit/cc-metric-collector/pkg/ccTopology"
 	"github.com/NVIDIA/go-nvml/pkg/dl"
 )
 
@@ -46,6 +49,16 @@ type LikwidCollectorEventsetConfig struct {
 	Metrics []LikwidCollectorMetricConfig `json:"metrics"`
 }
 
+type LikwidEventsetConfig struct {
+	internal int
+	gid      C.int
+	eorder   []*C.char
+	estr     *C.char
+	go_estr  string
+	results  map[int]map[string]interface{}
+	metrics  map[int]map[string]float64
+}
+
 type LikwidCollectorConfig struct {
 	Eventsets      []LikwidCollectorEventsetConfig `json:"eventsets"`
 	Metrics        []LikwidCollectorMetricConfig   `json:"globalmetrics,omitempty"`
@@ -64,11 +77,12 @@ type LikwidCollector struct {
 	metrics      map[C.int]map[string]int
 	groups       []C.int
 	config       LikwidCollectorConfig
-	results   map[int]map[int]map[string]interface{}
-	mresults  map[int]map[int]map[string]float64
 	gmresults    map[int]map[string]float64
 	basefreq     float64
 	running      bool
+	initialized  bool
+	likwidGroups map[C.int]LikwidEventsetConfig
+	lock         sync.Mutex
 }
 
 type LikwidMetric struct {
@@ -86,28 +100,86 @@ func eventsToEventStr(events map[string]string) string {
 	return strings.Join(elist, ",")
 }
 
+func genLikwidEventSet(input LikwidCollectorEventsetConfig) LikwidEventsetConfig {
+	tmplist := make([]string, 0)
+	clist := make([]string, 0)
+	for k := range input.Events {
+		clist = append(clist, k)
+	}
+	sort.Strings(clist)
+	elist := make([]*C.char, 0)
+	for _, k := range clist {
+		v := input.Events[k]
+		tmplist = append(tmplist, fmt.Sprintf("%s:%s", v, k))
+		c_counter := C.CString(k)
+		elist = append(elist, c_counter)
+	}
+	estr := strings.Join(tmplist, ",")
+	res := make(map[int]map[string]interface{})
+	met := make(map[int]map[string]float64)
+	for _, i := range topo.CpuList() {
+		res[i] = make(map[string]interface{})
+		for k := range input.Events {
+			res[i][k] = 0.0
+		}
+		met[i] = make(map[string]float64)
+		for _, v := range input.Metrics {
+			res[i][v.Name] = 0.0
+		}
+	}
+	return LikwidEventsetConfig{
+		gid:     -1,
+		eorder:  elist,
+		estr:    C.CString(estr),
+		go_estr: estr,
+		results: res,
+		metrics: met,
+	}
+}
+
+func testLikwidMetricFormula(formula string, params []string) bool {
+	myparams := make(map[string]interface{})
+	for _, p := range params {
+		myparams[p] = float64(1.0)
+	}
+	_, err := agg.EvalFloat64Condition(formula, myparams)
+	return err == nil
+}
+
 func getBaseFreq() float64 {
+	files := []string{
+		"/sys/devices/system/cpu/cpu0/cpufreq/bios_limit",
+		"/sys/devices/system/cpu/cpu0/cpufreq/base_frequency",
+	}
 	var freq float64 = math.NaN()
-	C.power_init(0)
+	for _, f := range files {
-	info := C.get_powerInfo()
+		buffer, err := os.ReadFile(f)
-	if float64(info.baseFrequency) != 0 {
-		freq = float64(info.baseFrequency) * 1e6
-	} else {
-		buffer, err := ioutil.ReadFile("/sys/devices/system/cpu/cpu0/cpufreq/bios_limit")
 		if err == nil {
 			data := strings.Replace(string(buffer), "\n", "", -1)
 			x, err := strconv.ParseInt(data, 0, 64)
 			if err == nil {
-				freq = float64(x) * 1e6
+				freq = float64(x)
+				break
 			}
 		}
 	}
-	return freq
+
+	if math.IsNaN(freq) {
+		C.power_init(0)
+		info := C.get_powerInfo()
+		if float64(info.baseFrequency) != 0 {
+			freq = float64(info.baseFrequency)
+		}
+		C.power_finalize()
+	}
+	return freq * 1e3
 }
 
 func (m *LikwidCollector) Init(config json.RawMessage) error {
-	var ret C.int
 	m.name = "LikwidCollector"
+	m.parallel = false
+	m.initialized = false
+	m.running = false
 	m.config.AccessMode = LIKWID_DEF_ACCESSMODE
 	m.config.LibraryPath = LIKWID_LIB_NAME
 	if len(config) > 0 {
@@ -131,181 +203,145 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
 	}
 	m.setup()
 
-	m.meta = map[string]string{"source": m.name, "group": "PerfCounter"}
+	m.meta = map[string]string{"group": "PerfCounter"}
 	cclog.ComponentDebug(m.name, "Get cpulist and init maps and lists")
-	cpulist := topo.CpuList()
+	cpulist := topo.HwthreadList()
 	m.cpulist = make([]C.int, len(cpulist))
 	m.cpu2tid = make(map[int]int)
 	for i, c := range cpulist {
 		m.cpulist[i] = C.int(c)
 		m.cpu2tid[c] = i
 	}
-	m.sock2tid = make(map[int]int)
+
-	tmp := make([]C.int, 1)
+	m.likwidGroups = make(map[C.int]LikwidEventsetConfig)
-	for _, sid := range topo.SocketList() {
+
-		cstr := C.CString(fmt.Sprintf("S%d:0", sid))
+	// m.results = make(map[int]map[int]map[string]interface{})
-		ret = C.cpustr_to_cpulist(cstr, &tmp[0], 1)
+	// m.mresults = make(map[int]map[int]map[string]float64)
-		if ret > 0 {
-			m.sock2tid[sid] = m.cpu2tid[int(tmp[0])]
-		}
-		C.free(unsafe.Pointer(cstr))
-	}
-	m.results = make(map[int]map[int]map[string]interface{})
-	m.mresults = make(map[int]map[int]map[string]float64)
 	m.gmresults = make(map[int]map[string]float64)
-	cclog.ComponentDebug(m.name, "initialize LIKWID topology")
+	for _, tid := range m.cpu2tid {
-	ret = C.topology_init()
+		m.gmresults[tid] = make(map[string]float64)
-	if ret != 0 {
-		err := errors.New("failed to initialize LIKWID topology")
-		cclog.ComponentError(m.name, err.Error())
-		return err
-	}
-
-	switch m.config.AccessMode {
-	case "direct":
-		C.HPMmode(0)
-	case "accessdaemon":
-		if len(m.config.DaemonPath) > 0 {
-			p := os.Getenv("PATH")
-			os.Setenv("PATH", m.config.DaemonPath+":"+p)
-		}
-		C.HPMmode(1)
-	}
-
-	cclog.ComponentDebug(m.name, "initialize LIKWID perfmon module")
-	ret = C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
-	if ret != 0 {
-		C.topology_finalize()
-		err := errors.New("failed to initialize LIKWID topology")
-		cclog.ComponentError(m.name, err.Error())
-		return err
 	}
 
 	// This is for the global metrics computation test
-	globalParams := make(map[string]interface{})
+	totalMetrics := 0
-	globalParams["time"] = float64(1.0)
-	globalParams["inverseClock"] = float64(1.0)
-	// While adding the events, we test the metrics whether they can be computed at all
-	for i, evset := range m.config.Eventsets {
-		var gid C.int
-		var cstr *C.char
-		if len(evset.Events) > 0 {
-			estr := eventsToEventStr(evset.Events)
 	// Generate parameter list for the metric computing test
-			params := make(map[string]interface{})
+	params := make([]string, 0)
-			params["time"] = float64(1.0)
+	params = append(params, "time", "inverseClock")
-			params["inverseClock"] = float64(1.0)
+	// Generate parameter list for the global metric computing test
+	globalParams := make([]string, 0)
+	globalParams = append(globalParams, "time", "inverseClock")
+	// We test the eventset metrics whether they can be computed at all
+	for _, evset := range m.config.Eventsets {
+		if len(evset.Events) > 0 {
+			params = params[:2]
 			for counter := range evset.Events {
-				params[counter] = float64(1.0)
+				params = append(params, counter)
 			}
 			for _, metric := range evset.Metrics {
 				// Try to evaluate the metric
-				_, err := agg.EvalFloat64Condition(metric.Calc, params)
+				if testLikwidMetricFormula(metric.Calc, params) {
-				if err != nil {
+					// Add the computable metric to the parameter list for the global metrics
-					cclog.ComponentError(m.name, "Calculation for metric", metric.Name, "failed:", err.Error())
+					globalParams = append(globalParams, metric.Name)
-					continue
+					totalMetrics++
-				}
+				} else {
-				// If the metric is not in the parameter list for the global metrics, add it
+					metric.Calc = ""
-				if _, ok := globalParams[metric.Name]; !ok {
-					globalParams[metric.Name] = float64(1.0)
 				}
 			}
-			// Now we add the list of events to likwid
-			cstr = C.CString(estr)
-			gid = C.perfmon_addEventSet(cstr)
 		} else {
 			cclog.ComponentError(m.name, "Invalid Likwid eventset config, no events given")
 			continue
 		}
-		if gid >= 0 {
-			m.groups = append(m.groups, gid)
-		}
-		C.free(unsafe.Pointer(cstr))
-		m.results[i] = make(map[int]map[string]interface{})
-		m.mresults[i] = make(map[int]map[string]float64)
-		for tid := range m.cpulist {
-			m.results[i][tid] = make(map[string]interface{})
-			m.mresults[i][tid] = make(map[string]float64)
-			if i == 0 {
-				m.gmresults[tid] = make(map[string]float64)
-			}
-		}
 	}
 	for _, metric := range m.config.Metrics {
 		// Try to evaluate the global metric
-		_, err := agg.EvalFloat64Condition(metric.Calc, globalParams)
+		if !testLikwidMetricFormula(metric.Calc, globalParams) {
-		if err != nil {
+			cclog.ComponentError(m.name, "Calculation for metric", metric.Name, "failed")
-			cclog.ComponentError(m.name, "Calculation for metric", metric.Name, "failed:", err.Error())
+			metric.Calc = ""
-			continue
+		} else {
+			totalMetrics++
 		}
 	}
 
 	// If no event set could be added, shut down LikwidCollector
-	if len(m.groups) == 0 {
+	if totalMetrics == 0 {
-		C.perfmon_finalize()
+		err := errors.New("no LIKWID eventset or metric usable")
-		C.topology_finalize()
-		err := errors.New("no LIKWID performance group initialized")
 		cclog.ComponentError(m.name, err.Error())
 		return err
 	}
-	m.basefreq = getBaseFreq()
-	cclog.ComponentDebug(m.name, "BaseFreq", m.basefreq)
 	m.init = true
 	return nil
 }
 
 // take a measurement for 'interval' seconds of event set index 'group'
-func (m *LikwidCollector) takeMeasurement(group int, interval time.Duration) error {
+func (m *LikwidCollector) takeMeasurement(evset LikwidEventsetConfig, interval time.Duration) (bool, error) {
 	var ret C.int
-	gid := m.groups[group]
+	m.lock.Lock()
-	ret = C.perfmon_setupCounters(gid)
+	if m.initialized {
+		ret = C.perfmon_setupCounters(evset.gid)
 		if ret != 0 {
-		gctr := C.GoString(C.perfmon_getGroupName(gid))
+			var err error = nil
-		err := fmt.Errorf("failed to setup performance group %d (%s)", gid, gctr)
+			var skip bool = false
-		return err
+			if ret == -37 {
+				skip = true
+			} else {
+				err = fmt.Errorf("failed to setup performance group %d", evset.gid)
+			}
+			m.lock.Unlock()
+			return skip, err
 		}
 		ret = C.perfmon_startCounters()
 		if ret != 0 {
-		gctr := C.GoString(C.perfmon_getGroupName(gid))
+			var err error = nil
-		err := fmt.Errorf("failed to start performance group %d (%s)", gid, gctr)
+			var skip bool = false
-		return err
+			if ret == -37 {
+				skip = true
+			} else {
+				err = fmt.Errorf("failed to setup performance group %d", evset.gid)
+			}
+			m.lock.Unlock()
+			return skip, err
 		}
 		m.running = true
 		time.Sleep(interval)
 		m.running = false
 		ret = C.perfmon_stopCounters()
 		if ret != 0 {
-		gctr := C.GoString(C.perfmon_getGroupName(gid))
+			var err error = nil
-		err := fmt.Errorf("failed to stop performance group %d (%s)", gid, gctr)
+			var skip bool = false
-		return err
+			if ret == -37 {
+				skip = true
+			} else {
+				err = fmt.Errorf("failed to setup performance group %d", evset.gid)
 			}
-	return nil
+			m.lock.Unlock()
+			return skip, err
+		}
+	}
+	m.lock.Unlock()
+	return false, nil
 }
 
 // Get all measurement results for an event set, derive the metric values out of the measurement results and send it
-func (m *LikwidCollector) calcEventsetMetrics(group int, interval time.Duration, output chan lp.CCMetric) error {
+func (m *LikwidCollector) calcEventsetMetrics(evset LikwidEventsetConfig, interval time.Duration, output chan lp.CCMetric) error {
-	var eidx C.int
-	evset := m.config.Eventsets[group]
-	gid := m.groups[group]
 	invClock := float64(1.0 / m.basefreq)
 
 	// Go over events and get the results
-	for eidx = 0; int(eidx) < len(evset.Events); eidx++ {
+	for eidx, counter := range evset.eorder {
-		ctr := C.perfmon_getCounterName(gid, eidx)
+		gctr := C.GoString(counter)
-		gctr := C.GoString(ctr)
-
 		for _, tid := range m.cpu2tid {
-			if tid >= 0 {
+			res := C.perfmon_getLastResult(evset.gid, C.int(eidx), C.int(tid))
-				m.results[group][tid]["time"] = interval.Seconds()
+			fres := float64(res)
-				m.results[group][tid]["inverseClock"] = invClock
+			if m.config.InvalidToZero && (math.IsNaN(fres) || math.IsInf(fres, 0)) {
-				res := C.perfmon_getLastResult(gid, eidx, C.int(tid))
+				fres = 0.0
-				m.results[group][tid][gctr] = float64(res)
 			}
+			evset.results[tid][gctr] = fres
+			evset.results[tid]["time"] = interval.Seconds()
+			evset.results[tid]["inverseClock"] = invClock
 		}
 	}
 
 	// Go over the event set metrics, derive the value out of the event:counter values and send it
-	for _, metric := range evset.Metrics {
+	for _, metric := range m.config.Eventsets[evset.internal].Metrics {
 		// The metric scope is determined in the Init() function
 		// Get the map scope-id -> tids
 		scopemap := m.cpu2tid
@@ -313,19 +349,16 @@ func (m *LikwidCollector) calcEventsetMetrics(group int, interval time.Duration,
 			scopemap = m.sock2tid
 		}
 		for domain, tid := range scopemap {
-			if tid >= 0 {
+			if tid >= 0 && len(metric.Calc) > 0 {
-				value, err := agg.EvalFloat64Condition(metric.Calc, m.results[group][tid])
+				value, err := agg.EvalFloat64Condition(metric.Calc, evset.results[tid])
 				if err != nil {
 					cclog.ComponentError(m.name, "Calculation for metric", metric.Name, "failed:", err.Error())
-					continue
-				}
-				m.mresults[group][tid][metric.Name] = value
-				if m.config.InvalidToZero && math.IsNaN(value) {
 					value = 0.0
 				}
-				if m.config.InvalidToZero && math.IsInf(value, 0) {
+				if m.config.InvalidToZero && (math.IsNaN(value) || math.IsInf(value, 0)) {
 					value = 0.0
 				}
+				evset.metrics[tid][metric.Name] = value
 				// Now we have the result, send it with the proper tags
 				if !math.IsNaN(value) {
 					if metric.Publish {
@@ -360,8 +393,8 @@ func (m *LikwidCollector) calcGlobalMetrics(interval time.Duration, output chan
 			if tid >= 0 {
 				// Here we generate parameter list
 				params := make(map[string]interface{})
-				for j := range m.groups {
+				for _, evset := range m.likwidGroups {
-					for mname, mres := range m.mresults[j][tid] {
+					for mname, mres := range evset.metrics[tid] {
 						params[mname] = mres
 					}
 				}
@@ -369,15 +402,12 @@ func (m *LikwidCollector) calcGlobalMetrics(interval time.Duration, output chan
 				value, err := agg.EvalFloat64Condition(metric.Calc, params)
 				if err != nil {
 					cclog.ComponentError(m.name, "Calculation for metric", metric.Name, "failed:", err.Error())
-					continue
+					value = 0.0
+				}
+				if m.config.InvalidToZero && (math.IsNaN(value) || math.IsInf(value, 0)) {
+					value = 0.0
 				}
 				m.gmresults[tid][metric.Name] = value
-				if m.config.InvalidToZero && math.IsNaN(value) {
-					value = 0.0
-				}
-				if m.config.InvalidToZero && math.IsInf(value, 0) {
-					value = 0.0
-				}
 				// Now we have the result, send it with the proper tags
 				if !math.IsNaN(value) {
 					if metric.Publish {
@@ -401,38 +431,163 @@ func (m *LikwidCollector) calcGlobalMetrics(interval time.Duration, output chan
 	return nil
 }
 
+func (m *LikwidCollector) LateInit() error {
+	var ret C.int
+	if m.initialized {
+		return nil
+	}
+	switch m.config.AccessMode {
+	case "direct":
+		C.HPMmode(0)
+	case "accessdaemon":
+		if len(m.config.DaemonPath) > 0 {
+			p := os.Getenv("PATH")
+			os.Setenv("PATH", m.config.DaemonPath+":"+p)
+		}
+		C.HPMmode(1)
+	}
+	cclog.ComponentDebug(m.name, "initialize LIKWID topology")
+	ret = C.topology_init()
+	if ret != 0 {
+		err := errors.New("failed to initialize LIKWID topology")
+		cclog.ComponentError(m.name, err.Error())
+		return err
+	}
+
+	m.sock2tid = make(map[int]int)
+	tmp := make([]C.int, 1)
+	for _, sid := range topo.SocketList() {
+		cstr := C.CString(fmt.Sprintf("S%d:0", sid))
+		ret = C.cpustr_to_cpulist(cstr, &tmp[0], 1)
+		if ret > 0 {
+			m.sock2tid[sid] = m.cpu2tid[int(tmp[0])]
+		}
+		C.free(unsafe.Pointer(cstr))
+	}
+
+	m.basefreq = getBaseFreq()
+	cclog.ComponentDebug(m.name, "BaseFreq", m.basefreq)
+
+	cclog.ComponentDebug(m.name, "initialize LIKWID perfmon module")
+	ret = C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
+	if ret != 0 {
+		var err error = nil
+		C.topology_finalize()
+		if ret != -22 {
+			err = errors.New("failed to initialize LIKWID perfmon")
+			cclog.ComponentError(m.name, err.Error())
+		} else {
+			err = errors.New("access to LIKWID perfmon locked")
+		}
+		return err
+	}
+
+	// While adding the events, we test the metrics whether they can be computed at all
+	for i, evset := range m.config.Eventsets {
+		var gid C.int
+		if len(evset.Events) > 0 {
+			skip := false
+			likwidGroup := genLikwidEventSet(evset)
+			for _, g := range m.likwidGroups {
+				if likwidGroup.go_estr == g.go_estr {
+					skip = true
+					break
+				}
+			}
+			if skip {
+				continue
+			}
+			// Now we add the list of events to likwid
+			gid = C.perfmon_addEventSet(likwidGroup.estr)
+			if gid >= 0 {
+				likwidGroup.gid = gid
+				likwidGroup.internal = i
+				m.likwidGroups[gid] = likwidGroup
+			}
+		} else {
+			cclog.ComponentError(m.name, "Invalid Likwid eventset config, no events given")
+			continue
+		}
+
+	}
+
+	// If no event set could be added, shut down LikwidCollector
+	if len(m.likwidGroups) == 0 {
+		C.perfmon_finalize()
+		C.topology_finalize()
+		err := errors.New("no LIKWID performance group initialized")
+		cclog.ComponentError(m.name, err.Error())
+		return err
+	}
+	sigchan := make(chan os.Signal, 1)
+	signal.Notify(sigchan, syscall.SIGCHLD)
+	signal.Notify(sigchan, os.Interrupt)
+	go func() {
+		<-sigchan
+
+		signal.Stop(sigchan)
+		m.initialized = false
+	}()
+	m.initialized = true
+	return nil
+}
+
 // main read function taking multiple measurement rounds, each 'interval' seconds long
 func (m *LikwidCollector) Read(interval time.Duration, output chan lp.CCMetric) {
+	var skip bool = false
+	var err error
 	if !m.init {
 		return
 	}
 
-	for i := range m.groups {
+	if !m.initialized {
+		m.lock.Lock()
+		err = m.LateInit()
+		if err != nil {
+			m.lock.Unlock()
+			return
+		}
+		m.initialized = true
+		m.lock.Unlock()
+	}
+
+	if m.initialized && !skip {
+		for _, evset := range m.likwidGroups {
+			if !skip {
 				// measure event set 'i' for 'interval' seconds
-		err := m.takeMeasurement(i, interval)
+				skip, err = m.takeMeasurement(evset, interval)
 				if err != nil {
 					cclog.ComponentError(m.name, err.Error())
 					return
 				}
-		// read measurements and derive event set metrics
-		m.calcEventsetMetrics(i, interval, output)
 			}
+
+			if !skip {
+				// read measurements and derive event set metrics
+				m.calcEventsetMetrics(evset, interval, output)
+			}
+		}
+		if !skip {
 			// use the event set metrics to derive the global metrics
 			m.calcGlobalMetrics(interval, output)
+		}
+	}
 }
 
 func (m *LikwidCollector) Close() {
 	if m.init {
-		cclog.ComponentDebug(m.name, "Closing ...")
 		m.init = false
-		if m.running {
+		cclog.ComponentDebug(m.name, "Closing ...")
-			cclog.ComponentDebug(m.name, "Stopping counters")
+		m.lock.Lock()
-			C.perfmon_stopCounters()
+		if m.initialized {
-		}
 			cclog.ComponentDebug(m.name, "Finalize LIKWID perfmon module")
 			C.perfmon_finalize()
+			m.initialized = false
+		}
+		m.lock.Unlock()
 		cclog.ComponentDebug(m.name, "Finalize LIKWID topology module")
 		C.topology_finalize()
+
 		cclog.ComponentDebug(m.name, "Closing done")
 	}
 }

collectors/likwidMetric.md

@@ -3,32 +3,66 @@
 
 The `likwid` collector is probably the most complicated collector. The LIKWID library is included as static library with *direct* access mode. The *direct* access mode is suitable if the daemon is executed by a root user. The static library does not contain the performance groups, so all information needs to be provided in the configuration.
 
-The `likwid` configuration consists of two parts, the "eventsets" and "globalmetrics":
+```json
-- An event set list itself has two parts, the "events" and a set of derivable "metrics". Each of the "events" is a counter:event pair in LIKWID's syntax. The "metrics" are a list of formulas to derive the metric value from the measurements of the "events". Each metric has a name, the formula, a scope and a publish flag. Counter names can be used like variables in the formulas, so `PMC0+PMC1` sums the measurements for the both events configured in the counters `PMC0` and `PMC1`. The scope tells the Collector whether it is a metric for each hardware thread (`cpu`) or each CPU socket (`socket`). You may specify a unit for the metric with `unit`. The last one is the publishing flag. It tells the collector whether a metric should be sent to the router.
+  "likwid": {
-- The global metrics are metrics which require data from all event set measurements to be derived. The inputs are the metrics in the event sets. Similar to the metrics in the event sets, the global metrics are defined by a name, a formula, a scope and a publish flag. See event set metrics for details. The only difference is that there is no access to the raw event measurements anymore but only to the metrics. So, the idea is to derive a metric in the "eventsets" section and reuse it in the "globalmetrics" part. If you need a metric only for deriving the global metrics, disable forwarding of the event set metrics (`publish=false`). **Be aware** that the combination might be misleading because the "behavior" of a metric changes over time and the multiple measurements might count different computing phases. Similar to the metrics in the eventset, you can specify a metric unit with the `unit` field.
+    "force_overwrite" : false,
+    "invalid_to_zero" : false,
+    "liblikwid_path" : "/path/to/liblikwid.so",
+    "accessdaemon_path" : "/folder/that/contains/likwid-accessD",
+    "access_mode" : "direct or accessdaemon or perf_event",
+    "eventsets": [
+      {
+        "events" : {
+          "COUNTER0": "EVENT0",
+          "COUNTER1": "EVENT1",
+        },
+        "metrics" : [
+          {
+            "name": "sum_01",
+            "calc": "COUNTER0 + COUNTER1",
+            "publish": false,
+            "unit": "myunit",
+            "type": "hwthread"
+          }
+        ]
+      }
+    ]
+    "globalmetrics" : [
+      {
+        "name": "global_sum",
+        "calc": "sum_01",
+        "publish": true,
+        "unit": "myunit",
+        "type": "hwthread"
+      }
+    ]
+  }
+```
+
+The `likwid` configuration consists of two parts, the `eventsets` and `globalmetrics`:
+- An event set list itself has two parts, the `events` and a set of derivable `metrics`. Each of the `events` is a `counter:event` pair in LIKWID's syntax. The `metrics` are a list of formulas to derive the metric value from the measurements of the `events`' values. Each metric has a name, the formula, a type and a publish flag. There is an optional `unit` field. Counter names can be used like variables in the formulas, so `PMC0+PMC1` sums the measurements for the both events configured in the counters `PMC0` and `PMC1`. You can optionally use `time` for the measurement time and `inverseClock` for `1.0/baseCpuFrequency`. The type tells the LikwidCollector whether it is a metric for each hardware thread (`cpu`) or each CPU socket (`socket`). You may specify a unit for the metric with `unit`. The last one is the publishing flag. It tells the LikwidCollector whether a metric should be sent to the router or is only used internally to compute a global metric.
+- The `globalmetrics` are metrics which require data from multiple event set measurements to be derived. The inputs are the metrics in the event sets. Similar to the metrics in the event sets, the global metrics are defined by a name, a formula, a scope and a publish flag. See event set metrics for details. The only difference is that there is no access to the raw event measurements anymore but only to the metrics. Also `time` and `inverseClock` cannot be used anymore. So, the idea is to derive a metric in the `eventsets` section and reuse it in the `globalmetrics` part. If you need a metric only for deriving the global metrics, disable forwarding of the event set metrics (`"publish": false`). **Be aware** that the combination might be misleading because the "behavior" of a metric changes over time and the multiple measurements might count different computing phases. Similar to the metrics in the eventset, you can specify a metric unit with the `unit` field.
 
 Additional options:
-- `access_mode` : Method to use for hardware performance monitoring (`direct` access as root user, `accessdaemon` for the daemon mode)
-- `accessdaemon_path`: Folder with the access daemon `likwid-accessD`, commonly `$LIKWID_INSTALL_LOC/sbin`
 - `force_overwrite`: Same as setting `LIKWID_FORCE=1`. In case counters are already in-use, LIKWID overwrites their configuration to do its measurements
-- `invalid_to_zero`: In some cases, the calculations result in `NaN` or `Inf`. With this option, all `NaN` and `Inf` values are replaces with `0.0`.
+- `invalid_to_zero`: In some cases, the calculations result in `NaN` or `Inf`. With this option, all `NaN` and `Inf` values are replaces with `0.0`. See below in [seperate section](./likwidMetric.md#invalid_to_zero-option)
-- `access_mode`: Specify LIKWID access mode: `direct` for direct register access as root user or `accessdaemon`
+- `access_mode`: Specify LIKWID access mode: `direct` for direct register access as root user or `accessdaemon`. The access mode `perf_event` is current untested.
-- `accessdaemon_path`: Folder of the accessDaemon `likwid-accessD`
+- `accessdaemon_path`: Folder of the accessDaemon `likwid-accessD` (like `/usr/local/sbin`)
-- `liblikwid_path`: Location of `liblikwid.so`
+- `liblikwid_path`: Location of `liblikwid.so` including file name like `/usr/local/lib/liblikwid.so`
 
 ### Available metric scopes
 
-Hardware performance counters are scattered all over the system nowadays. A counter coveres a specific part of the system. While there are hardware thread specific counter for CPU cycles, instructions and so on, some others are specific for a whole CPU socket/package. To address that, the collector provides the specification of a 'scope' for each metric.
+Hardware performance counters are scattered all over the system nowadays. A counter coveres a specific part of the system. While there are hardware thread specific counter for CPU cycles, instructions and so on, some others are specific for a whole CPU socket/package. To address that, the LikwidCollector provides the specification of a `type` for each metric.
 
-- `cpu` : One metric per CPU hardware thread with the tags `"type" : "cpu"` and `"type-id" : "$cpu_id"`
+- `hwthread` : One metric per CPU hardware thread with the tags `"type" : "hwthread"` and `"type-id" : "$hwthread_id"`
 - `socket` : One metric per CPU socket/package with the tags `"type" : "socket"` and `"type-id" : "$socket_id"`
 
-**Note:** You cannot specify `socket` scope for a metric that is measured at `cpu` scope, so some kind of expert knowledge or lookup work in the [Likwid Wiki](https://github.com/RRZE-HPC/likwid/wiki) is required. Get the scope of each counter from the *Architecture* pages and as soon as one counter in a metric is socket-specific, the whole metric is socket-specific.
+**Note:** You cannot specify `socket` scope for a metric that is measured at `hwthread` scope, so some kind of expert knowledge or lookup work in the [Likwid Wiki](https://github.com/RRZE-HPC/likwid/wiki) is required. Get the scope of each counter from the *Architecture* pages and as soon as one counter in a metric is socket-specific, the whole metric is socket-specific.
 
 As a guideline:
-- All counters `FIXCx`, `PMCy` and `TMAz` have the scope `cpu`
+- All counters `FIXCx`, `PMCy` and `TMAz` have the scope `hwthread`
 - All counters names containing `BOX` have the scope `socket`
-- All `PWRx` counters have scope `socket`, except `"PWR1" : "RAPL_CORE_ENERGY"` has `cpu` scope
+- All `PWRx` counters have scope `socket`, except `"PWR1" : "RAPL_CORE_ENERGY"` has `hwthread` scope
 - All `DFCx` counters have scope `socket`
 
 ### Help with the configuration
@@ -50,6 +84,7 @@ $ scripts/likwid_perfgroup_to_cc_config.py ICX MEM_DP
 {
   "events": {
     "FIXC0": "INSTR_RETIRED_ANY",
+    "FIXC1": "CPU_CLK_UNHALTED_CORE",
     "..." : "..."
   },
   "metrics" : [
@@ -58,7 +93,7 @@ $ scripts/likwid_perfgroup_to_cc_config.py ICX MEM_DP
       "name": "Runtime (RDTSC) [s]",
       "publish": true,
       "unit": "seconds"
-      "scope": "cpu"
+      "scope": "hwthread"
     },
     {
       "..." : "..."
@@ -75,21 +110,28 @@ LIKWID checks the file `/var/run/likwid.lock` before performing any interfering
 
 Before (SLURM prolog, ...)
 ```
-$ chwon $JOBUSER /var/run/likwid.lock
+$ chown $JOBUSER /var/run/likwid.lock
 ```
 
 After (SLURM epilog, ...)
 ```
-$ chwon $CCUSER /var/run/likwid.lock
+$ chown $CCUSER /var/run/likwid.lock
 ```
 
+### `invalid_to_zero` option
+In some cases LIKWID returns `0.0` for some events that are further used in processing and maybe used as divisor in a calculation. After evaluation of a metric, the result might be `NaN` or `+-Inf`. These resulting metrics are commonly not created and forwarded to the router because the [InfluxDB line protocol](https://docs.influxdata.com/influxdb/cloud/reference/syntax/line-protocol/#float) does not support these special floating-point values. If you want to have them sent, this option forces these metric values to be `0.0` instead.
+
+One might think this does not happen often but often used metrics in the world of performance engineering like Instructions-per-Cycle (IPC) or more frequently the actual CPU clock are derived with events like `CPU_CLK_UNHALTED_CORE` (Intel) which do not increment in halted state (as the name implies). In there are different power management systems in a chip which can cause a hardware thread to go in such a state. Moreover, if no cycles are executed by the core, also many other events are not incremented as well (like `INSTR_RETIRED_ANY` for retired instructions and part of IPC).
+
+
 ### Example configuration
 
+#### AMD Zen3
 
 ```json
   "likwid": {
     "force_overwrite" : false,
-    "nan_to_zero" : false,
+    "invalid_to_zero" : false,
     "eventsets": [
       {
         "events": {
@@ -108,20 +150,20 @@ $ chwon $CCUSER /var/run/likwid.lock
           {
             "name": "ipc",
             "calc": "PMC0/PMC1",
-            "type": "cpu",
+            "type": "hwthread",
             "publish": true
           },
           {
             "name": "flops_any",
             "calc": "0.000001*PMC2/time",
             "unit": "MFlops/s",
-            "type": "cpu",
+            "type": "hwthread",
             "publish": true
           },
           {
             "name": "clock",
             "calc": "0.000001*(FIXC1/FIXC2)/inverseClock",
-            "type": "cpu",
+            "type": "hwthread",
             "unit": "MHz",
             "publish": true
           },
@@ -182,7 +224,7 @@ $ chwon $CCUSER /var/run/likwid.lock
 
 ### How to get the eventsets and metrics from LIKWID
 
-The `likwid` collector reads hardware performance counters at a **cpu** and **socket** level. The configuration looks quite complicated but it is basically copy&paste from [LIKWID's performance groups](https://github.com/RRZE-HPC/likwid/tree/master/groups). The collector made multiple iterations and tried to use the performance groups but it lacked flexibility. The current way of configuration provides most flexibility.
+The `likwid` collector reads hardware performance counters at a **hwthread** and **socket** level. The configuration looks quite complicated but it is basically copy&paste from [LIKWID's performance groups](https://github.com/RRZE-HPC/likwid/tree/master/groups). The collector made multiple iterations and tried to use the performance groups but it lacked flexibility. The current way of configuration provides most flexibility.
 
 The logic is as following: There are multiple eventsets, each consisting of a list of counters+events and a list of metrics. If you compare a common performance group with the example setting above, there is not much difference:
 ```
@@ -203,7 +245,7 @@ METRICS                          ->   "metrics": [
 IPC   PMC0/PMC1                  ->     {
                                  ->       "name" : "IPC",
                                  ->       "calc" : "PMC0/PMC1",
-                                 ->       "scope": "cpu",
+                                 ->       "scope": "hwthread",
                                  ->       "publish": true
                                  ->     }
                                  ->   ]

collectors/loadavgMetric.go

@@ -3,13 +3,13 @@ package collectors
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"strconv"
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 //
@@ -36,6 +36,7 @@ type LoadavgCollector struct {
 
 func (m *LoadavgCollector) Init(config json.RawMessage) error {
 	m.name = "LoadavgCollector"
+	m.parallel = true
 	m.setup()
 	if len(config) > 0 {
 		err := json.Unmarshal(config, &m.config)
@@ -71,7 +72,7 @@ func (m *LoadavgCollector) Read(interval time.Duration, output chan lp.CCMetric)
 	if !m.init {
 		return
 	}
-	buffer, err := ioutil.ReadFile(LOADAVGFILE)
+	buffer, err := os.ReadFile(LOADAVGFILE)
 	if err != nil {
 		if err != nil {
 			cclog.ComponentError(

collectors/lustreJobstatMetric.go

@@ -0,0 +1,270 @@
+package collectors
+
+import (
+	"encoding/json"
+	"errors"
+	"os/exec"
+	"regexp"
+	"strings"
+	"time"
+
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+)
+
+type LustreJobstatCollectorConfig struct {
+	LCtlCommand        string   `json:"lctl_command,omitempty"`
+	ExcludeMetrics     []string `json:"exclude_metrics,omitempty"`
+	Sudo               bool     `json:"use_sudo,omitempty"`
+	SendAbsoluteValues bool     `json:"send_abs_values,omitempty"`
+	SendDerivedValues  bool     `json:"send_derived_values,omitempty"`
+	SendDiffValues     bool     `json:"send_diff_values,omitempty"`
+	JobRegex           string   `json:"jobid_regex,omitempty"`
+}
+
+type LustreJobstatCollector struct {
+	metricCollector
+	tags          map[string]string
+	config        LustreJobstatCollectorConfig
+	lctl          string
+	sudoCmd       string
+	lastTimestamp time.Time                // Store time stamp of last tick to derive bandwidths
+	definitions   []LustreMetricDefinition // Combined list without excluded metrics
+	//stats             map[string]map[string]int64 // Data for last value per device and metric
+	lastMdtData       *map[string]map[string]LustreMetricData
+	lastObdfilterData *map[string]map[string]LustreMetricData
+	jobidRegex        *regexp.Regexp
+}
+
+var defaultJobidRegex = `^(?P<jobid>[\d\w\.]+)$`
+
+var LustreMetricJobstatsDefinition = []LustreMetricDefinition{
+	{
+		name:       "lustre_job_read_samples",
+		lineprefix: "read",
+		offsetname: "samples",
+		unit:       "requests",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_job_read_min_bytes",
+		lineprefix: "read_bytes",
+		offsetname: "min",
+		unit:       "bytes",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_job_read_max_bytes",
+		lineprefix: "read_bytes",
+		offsetname: "max",
+		unit:       "bytes",
+		calc:       "none",
+	},
+}
+
+func (m *LustreJobstatCollector) executeLustreCommand(option string) []string {
+	return executeLustreCommand(m.sudoCmd, m.lctl, LCTL_OPTION, option, m.config.Sudo)
+}
+
+func (m *LustreJobstatCollector) Init(config json.RawMessage) error {
+	var err error
+	m.name = "LustreJobstatCollector"
+	m.parallel = true
+	m.config.JobRegex = defaultJobidRegex
+	m.config.SendAbsoluteValues = true
+	if len(config) > 0 {
+		err = json.Unmarshal(config, &m.config)
+		if err != nil {
+			return err
+		}
+	}
+	m.setup()
+	m.tags = map[string]string{"type": "jobid"}
+	m.meta = map[string]string{"source": m.name, "group": "Lustre", "scope": "job"}
+
+	// Lustre file system statistics can only be queried by user root
+	// or with password-less sudo
+	// if !m.config.Sudo {
+	// 	user, err := user.Current()
+	// 	if err != nil {
+	// 		cclog.ComponentError(m.name, "Failed to get current user:", err.Error())
+	// 		return err
+	// 	}
+	// 	if user.Uid != "0" {
+	// 		cclog.ComponentError(m.name, "Lustre file system statistics can only be queried by user root")
+	// 		return err
+	// 	}
+	// } else {
+	// 	p, err := exec.LookPath("sudo")
+	// 	if err != nil {
+	// 		cclog.ComponentError(m.name, "Cannot find 'sudo'")
+	// 		return err
+	// 	}
+	// 	m.sudoCmd = p
+	// }
+
+	p, err := exec.LookPath(m.config.LCtlCommand)
+	if err != nil {
+		p, err = exec.LookPath(LCTL_CMD)
+		if err != nil {
+			return err
+		}
+	}
+	m.lctl = p
+
+	m.definitions = make([]LustreMetricDefinition, 0)
+	if m.config.SendAbsoluteValues {
+		for _, def := range LustreMetricJobstatsDefinition {
+			if _, skip := stringArrayContains(m.config.ExcludeMetrics, def.name); !skip {
+				m.definitions = append(m.definitions, def)
+			}
+		}
+	}
+
+	if len(m.definitions) == 0 {
+		return errors.New("no metrics to collect")
+	}
+
+	x := make(map[string]map[string]LustreMetricData)
+	m.lastMdtData = &x
+	x = make(map[string]map[string]LustreMetricData)
+	m.lastObdfilterData = &x
+
+	if len(m.config.JobRegex) > 0 {
+		jregex := strings.ReplaceAll(m.config.JobRegex, "%", "\\")
+		r, err := regexp.Compile(jregex)
+		if err == nil {
+			m.jobidRegex = r
+		} else {
+			cclog.ComponentError(m.name, "Cannot compile jobid regex")
+			return err
+		}
+	}
+
+	m.lastTimestamp = time.Now()
+	m.init = true
+	return nil
+}
+
+func (m *LustreJobstatCollector) Read(interval time.Duration, output chan lp.CCMetric) {
+	if !m.init {
+		return
+	}
+
+	getValue := func(data map[string]map[string]LustreMetricData, device string, jobid string, operation string, field string) int64 {
+		var value int64 = -1
+		if ddata, ok := data[device]; ok {
+			if jdata, ok := ddata[jobid]; ok {
+				if opdata, ok := jdata.op_data[operation]; ok {
+					if v, ok := opdata[field]; ok {
+						value = v
+					}
+				}
+			}
+		}
+		return value
+	}
+
+	jobIdToTags := func(jobregex *regexp.Regexp, job string) map[string]string {
+		tags := make(map[string]string)
+		groups := jobregex.SubexpNames()
+		for _, match := range jobregex.FindAllStringSubmatch(job, -1) {
+			for groupIdx, group := range match {
+				if len(groups[groupIdx]) > 0 {
+					tags[groups[groupIdx]] = group
+				}
+			}
+		}
+		return tags
+	}
+
+	generateMetric := func(definition LustreMetricDefinition, data map[string]map[string]LustreMetricData, last map[string]map[string]LustreMetricData, now time.Time) {
+		tdiff := now.Sub(m.lastTimestamp)
+		for dev, ddata := range data {
+			for jobid, jdata := range ddata {
+				jobtags := jobIdToTags(m.jobidRegex, jobid)
+				if _, ok := jobtags["jobid"]; !ok {
+					continue
+				}
+				cur := getValue(data, dev, jobid, definition.lineprefix, definition.offsetname)
+				old := getValue(last, dev, jobid, definition.lineprefix, definition.offsetname)
+				var x interface{} = -1
+				var valid = false
+				switch definition.calc {
+				case "none":
+					x = cur
+					valid = true
+				case "difference":
+					if len(last) > 0 {
+						if old >= 0 {
+							x = cur - old
+							valid = true
+						}
+					}
+				case "derivative":
+					if len(last) > 0 {
+						if old >= 0 {
+							x = float64(cur-old) / tdiff.Seconds()
+							valid = true
+						}
+					}
+				}
+				if valid {
+					y, err := lp.New(definition.name, m.tags, m.meta, map[string]interface{}{"value": x}, now)
+					if err == nil {
+						y.AddTag("stype", "device")
+						y.AddTag("stype-id", dev)
+						if j, ok := jobtags["jobid"]; ok {
+							y.AddTag("type-id", j)
+						} else {
+							y.AddTag("type-id", jobid)
+						}
+						for k, v := range jobtags {
+							switch k {
+							case "jobid":
+							case "hostname":
+								y.AddTag("hostname", v)
+							default:
+								y.AddMeta(k, v)
+							}
+						}
+						if len(definition.unit) > 0 {
+							y.AddMeta("unit", definition.unit)
+						} else {
+							if unit, ok := jdata.op_units[definition.lineprefix]; ok {
+								y.AddMeta("unit", unit)
+							}
+						}
+						output <- y
+					}
+				}
+			}
+		}
+	}
+
+	now := time.Now()
+
+	mdt_lines := m.executeLustreCommand("mdt.*.job_stats")
+	if len(mdt_lines) > 0 {
+		mdt_data := readCommandOutput(mdt_lines)
+		for _, def := range m.definitions {
+			generateMetric(def, mdt_data, *m.lastMdtData, now)
+		}
+		m.lastMdtData = &mdt_data
+	}
+
+	obdfilter_lines := m.executeLustreCommand("obdfilter.*.job_stats")
+	if len(obdfilter_lines) > 0 {
+		obdfilter_data := readCommandOutput(obdfilter_lines)
+		for _, def := range m.definitions {
+			generateMetric(def, obdfilter_data, *m.lastObdfilterData, now)
+		}
+		m.lastObdfilterData = &obdfilter_data
+	}
+
+	m.lastTimestamp = now
+}
+
+func (m *LustreJobstatCollector) Close() {
+	m.init = false
+}

collectors/lustreJobstatMetric.md

@@ -0,0 +1,35 @@
+
+## `lustre_jobstat` collector
+
+**Note**: This collector is meant to run on the Lustre servers, **not** the clients
+
+The Lustre filesystem provides a feature (`job_stats`) to group processes on client side with an identifier string (like a compute job with its jobid) and retrieve the file system operation counts on the server side. Check the section [How to configure `job_stats`]() for more information.
+
+### Configuration
+
+```json
+  "lustre_jobstat_": {
+    "lctl_command": "/path/to/lctl",
+    "use_sudo": false,
+    "exclude_metrics": [
+      "setattr",
+      "getattr"
+    ],
+    "send_abs_values" : true,
+    
+    "jobid_regex" : "^(?P<jobid>[%d%w%.]+)$"
+  }
+```
+
+The `lustre_jobstat` collector uses the `lctl` application with the `get_param` option to get all `mdt.*.job_stats` and `obdfilter.*.job_stats` metrics. These metrics are only available for root users. If password-less sudo is configured, you can enable `sudo` in the configuration. In the `exclude_metrics` list, some metrics can be excluded to reduce network traffic and storage. With the `send_abs_values` flag, the collector sends absolute values for the configured metrics. The `jobid_regex` can be used to split the Lustre `job_stats` identifier into multiple parts. Since JSON cannot handle strings like `\d`, use `%` instead of `\`.
+
+Metrics:
+- `lustre_job_read_samples` (unit: `requests`)
+- `lustre_job_read_min_bytes` (unit: `bytes`)
+- `lustre_job_read_max_bytes` (unit: `bytes`)
+
+The collector adds the tags: `type=jobid,typeid=<jobid_from_regex>,stype=device,stype=<device_name_from_output>`.
+
+The collector adds the mega information: `unit=<unit>,scope=job`
+
+### How to configure `job_stats`

collectors/lustreMetric.go

@@ -10,14 +10,10 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
-const LUSTRE_SYSFS = `/sys/fs/lustre`
-const LCTL_CMD = `lctl`
-const LCTL_OPTION = `get_param`
-
 type LustreCollectorConfig struct {
 	LCtlCommand        string   `json:"lctl_command,omitempty"`
 	ExcludeMetrics     []string `json:"exclude_metrics,omitempty"`
@@ -27,14 +23,6 @@ type LustreCollectorConfig struct {
 	SendDiffValues     bool     `json:"send_diff_values,omitempty"`
 }
 
-type LustreMetricDefinition struct {
-	name       string
-	lineprefix string
-	lineoffset int
-	unit       string
-	calc       string
-}
-
 type LustreCollector struct {
 	metricCollector
 	tags          map[string]string
@@ -46,17 +34,209 @@ type LustreCollector struct {
 	stats         map[string]map[string]int64 // Data for last value per device and metric
 }
 
+var LustreAbsMetrics = []LustreMetricDefinition{
+	{
+		name:       "lustre_read_requests",
+		lineprefix: "read_bytes",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "requests",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_write_requests",
+		lineprefix: "write_bytes",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "requests",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_read_bytes",
+		lineprefix: "read_bytes",
+		lineoffset: 6,
+		offsetname: "sum",
+		unit:       "bytes",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_write_bytes",
+		lineprefix: "write_bytes",
+		lineoffset: 6,
+		offsetname: "sum",
+		unit:       "bytes",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_open",
+		lineprefix: "open",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_close",
+		lineprefix: "close",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_setattr",
+		lineprefix: "setattr",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_getattr",
+		lineprefix: "getattr",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_statfs",
+		lineprefix: "statfs",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "none",
+	},
+	{
+		name:       "lustre_inode_permission",
+		lineprefix: "inode_permission",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "none",
+	},
+}
+
+var LustreDiffMetrics = []LustreMetricDefinition{
+	{
+		name:       "lustre_read_requests_diff",
+		lineprefix: "read_bytes",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "requests",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_write_requests_diff",
+		lineprefix: "write_bytes",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "requests",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_read_bytes_diff",
+		lineprefix: "read_bytes",
+		lineoffset: 6,
+		offsetname: "sum",
+		unit:       "bytes",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_write_bytes_diff",
+		lineprefix: "write_bytes",
+		lineoffset: 6,
+		offsetname: "sum",
+		unit:       "bytes",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_open_diff",
+		lineprefix: "open",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_close_diff",
+		lineprefix: "close",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_setattr_diff",
+		lineprefix: "setattr",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_getattr_diff",
+		lineprefix: "getattr",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_statfs_diff",
+		lineprefix: "statfs",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "difference",
+	},
+	{
+		name:       "lustre_inode_permission_diff",
+		lineprefix: "inode_permission",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "",
+		calc:       "difference",
+	},
+}
+
+var LustreDeriveMetrics = []LustreMetricDefinition{
+	{
+		name:       "lustre_read_requests_rate",
+		lineprefix: "read_bytes",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "requests/sec",
+		calc:       "derivative",
+	},
+	{
+		name:       "lustre_write_requests_rate",
+		lineprefix: "write_bytes",
+		lineoffset: 1,
+		offsetname: "samples",
+		unit:       "requests/sec",
+		calc:       "derivative",
+	},
+	{
+		name:       "lustre_read_bw",
+		lineprefix: "read_bytes",
+		lineoffset: 6,
+		offsetname: "sum",
+		unit:       "bytes/sec",
+		calc:       "derivative",
+	},
+	{
+		name:       "lustre_write_bw",
+		lineprefix: "write_bytes",
+		lineoffset: 6,
+		offsetname: "sum",
+		unit:       "bytes/sec",
+		calc:       "derivative",
+	},
+}
+
 func (m *LustreCollector) getDeviceDataCommand(device string) []string {
-	var command *exec.Cmd
+	return executeLustreCommand(m.sudoCmd, m.lctl, LCTL_OPTION, fmt.Sprintf("llite.%s.stats", device), m.config.Sudo)
-	statsfile := fmt.Sprintf("llite.%s.stats", device)
-	if m.config.Sudo {
-		command = exec.Command(m.sudoCmd, m.lctl, LCTL_OPTION, statsfile)
-	} else {
-		command = exec.Command(m.lctl, LCTL_OPTION, statsfile)
-	}
-	command.Wait()
-	stdout, _ := command.Output()
-	return strings.Split(string(stdout), "\n")
 }
 
 func (m *LustreCollector) getDevices() []string {
@@ -108,186 +288,10 @@ func getMetricData(lines []string, prefix string, offset int) (int64, error) {
 // 	return strings.Split(string(buffer), "\n")
 // }
 
-var LustreAbsMetrics = []LustreMetricDefinition{
-	{
-		name:       "lustre_read_requests",
-		lineprefix: "read_bytes",
-		lineoffset: 1,
-		unit:       "requests",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_write_requests",
-		lineprefix: "write_bytes",
-		lineoffset: 1,
-		unit:       "requests",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_read_bytes",
-		lineprefix: "read_bytes",
-		lineoffset: 6,
-		unit:       "bytes",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_write_bytes",
-		lineprefix: "write_bytes",
-		lineoffset: 6,
-		unit:       "bytes",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_open",
-		lineprefix: "open",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_close",
-		lineprefix: "close",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_setattr",
-		lineprefix: "setattr",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_getattr",
-		lineprefix: "getattr",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_statfs",
-		lineprefix: "statfs",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "none",
-	},
-	{
-		name:       "lustre_inode_permission",
-		lineprefix: "inode_permission",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "none",
-	},
-}
-
-var LustreDiffMetrics = []LustreMetricDefinition{
-	{
-		name:       "lustre_read_requests_diff",
-		lineprefix: "read_bytes",
-		lineoffset: 1,
-		unit:       "requests",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_write_requests_diff",
-		lineprefix: "write_bytes",
-		lineoffset: 1,
-		unit:       "requests",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_read_bytes_diff",
-		lineprefix: "read_bytes",
-		lineoffset: 6,
-		unit:       "bytes",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_write_bytes_diff",
-		lineprefix: "write_bytes",
-		lineoffset: 6,
-		unit:       "bytes",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_open_diff",
-		lineprefix: "open",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_close_diff",
-		lineprefix: "close",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_setattr_diff",
-		lineprefix: "setattr",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_getattr_diff",
-		lineprefix: "getattr",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_statfs_diff",
-		lineprefix: "statfs",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "difference",
-	},
-	{
-		name:       "lustre_inode_permission_diff",
-		lineprefix: "inode_permission",
-		lineoffset: 1,
-		unit:       "",
-		calc:       "difference",
-	},
-}
-
-var LustreDeriveMetrics = []LustreMetricDefinition{
-	{
-		name:       "lustre_read_requests_rate",
-		lineprefix: "read_bytes",
-		lineoffset: 1,
-		unit:       "requests/sec",
-		calc:       "derivative",
-	},
-	{
-		name:       "lustre_write_requests_rate",
-		lineprefix: "write_bytes",
-		lineoffset: 1,
-		unit:       "requests/sec",
-		calc:       "derivative",
-	},
-	{
-		name:       "lustre_read_bw",
-		lineprefix: "read_bytes",
-		lineoffset: 6,
-		unit:       "bytes/sec",
-		calc:       "derivative",
-	},
-	{
-		name:       "lustre_write_bw",
-		lineprefix: "write_bytes",
-		lineoffset: 6,
-		unit:       "bytes/sec",
-		calc:       "derivative",
-	},
-}
-
 func (m *LustreCollector) Init(config json.RawMessage) error {
 	var err error
 	m.name = "LustreCollector"
+	m.parallel = true
 	if len(config) > 0 {
 		err = json.Unmarshal(config, &m.config)
 		if err != nil {
@@ -296,7 +300,7 @@ func (m *LustreCollector) Init(config json.RawMessage) error {
 	}
 	m.setup()
 	m.tags = map[string]string{"type": "node"}
-	m.meta = map[string]string{"source": m.name, "group": "Lustre"}
+	m.meta = map[string]string{"source": m.name, "group": "Lustre", "scope": "node"}
 
 	// Lustre file system statistics can only be queried by user root
 	// or with password-less sudo

collectors/lustreMetricCommon.go

@@ -0,0 +1,190 @@
+package collectors
+
+import (
+	"fmt"
+	"os/exec"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+const LUSTRE_SYSFS = `/sys/fs/lustre`
+const LCTL_CMD = `lctl`
+const LCTL_OPTION = `get_param`
+
+type LustreMetricDefinition struct {
+	name       string
+	lineprefix string
+	lineoffset int
+	offsetname string
+	unit       string
+	calc       string
+}
+
+type LustreMetricData struct {
+	sample_time       int64
+	start_time        int64
+	elapsed_time      int64
+	op_data           map[string]map[string]int64
+	op_units          map[string]string
+	sample_time_unit  string
+	start_time_unit   string
+	elapsed_time_unit string
+}
+
+var devicePattern = regexp.MustCompile(`^[\w\d\-_]+\.([\w\d\-_]+)\.[\w\d\-_]+=$`)
+var jobPattern = regexp.MustCompile(`^-\s*job_id:\s*([\w\d\-_\.:]+)$`)
+var snapshotPattern = regexp.MustCompile(`^\s*snapshot_time\s*:\s*([\d\.]+)\s*([\w\d\-_\.]*)$`)
+var startPattern = regexp.MustCompile(`^\s*start_time\s*:\s*([\d\.]+)\s*([\w\d\-_\.]*)$`)
+var elapsedPattern = regexp.MustCompile(`^\s*elapsed_time\s*:\s*([\d\.]+)\s*([\w\d\-_\.]*)$`)
+var linePattern = regexp.MustCompile(`^\s*([\w\d\-_\.]+):\s*\{\s*samples:\s*([\d\.]+),\s*unit:\s*([\w\d\-_\.]+),\s*min:\s*([\d\.]+),\s*max:\s*([\d\.]+),\s*sum:\s*([\d\.]+),\s*sumsq:\s*([\d\.]+)\s*\}`)
+
+func executeLustreCommand(sudo, lctl, option, search string, use_sudo bool) []string {
+	var command *exec.Cmd
+	if use_sudo {
+		command = exec.Command(sudo, lctl, option, search)
+	} else {
+		command = exec.Command(lctl, option, search)
+	}
+	command.Wait()
+	stdout, _ := command.Output()
+	return strings.Split(string(stdout), "\n")
+}
+
+func splitTree(lines []string, splitRegex *regexp.Regexp) map[string][]string {
+	entries := make(map[string][]string)
+	ent_lines := make([]int, 0)
+	for i, l := range lines {
+		m := splitRegex.FindStringSubmatch(l)
+		if len(m) == 2 {
+			ent_lines = append(ent_lines, i)
+		}
+	}
+	if len(ent_lines) > 0 {
+		for i, idx := range ent_lines[:len(ent_lines)-1] {
+			m := splitRegex.FindStringSubmatch(lines[idx])
+			entries[m[1]] = lines[idx+1 : ent_lines[i+1]]
+		}
+		last := ent_lines[len(ent_lines)-1]
+		m := splitRegex.FindStringSubmatch(lines[last])
+		entries[m[1]] = lines[last:]
+	}
+	return entries
+}
+
+func readDevices(lines []string) map[string][]string {
+	return splitTree(lines, devicePattern)
+}
+
+func readJobs(lines []string) map[string][]string {
+	return splitTree(lines, jobPattern)
+}
+
+func readJobdata(lines []string) LustreMetricData {
+
+	jobdata := LustreMetricData{
+		op_data:           make(map[string]map[string]int64),
+		op_units:          make(map[string]string),
+		sample_time:       0,
+		sample_time_unit:  "nsec",
+		start_time:        0,
+		start_time_unit:   "nsec",
+		elapsed_time:      0,
+		elapsed_time_unit: "nsec",
+	}
+	parseTime := func(value, unit string) int64 {
+		var t int64 = 0
+		if len(unit) == 0 {
+			unit = "secs"
+		}
+		values := strings.Split(value, ".")
+		units := strings.Split(unit, ".")
+		if len(values) != len(units) {
+			fmt.Printf("Invalid time specification '%s' and '%s'\n", value, unit)
+		}
+		for i, v := range values {
+			if len(units) > i {
+				s, err := strconv.ParseInt(v, 10, 64)
+				if err == nil {
+					switch units[i] {
+					case "secs":
+						t += s * 1e9
+					case "msecs":
+						t += s * 1e6
+					case "usecs":
+						t += s * 1e3
+					case "nsecs":
+						t += s
+					}
+				}
+			}
+		}
+		return t
+	}
+	parseNumber := func(value string) int64 {
+		s, err := strconv.ParseInt(value, 10, 64)
+		if err == nil {
+			return s
+		}
+		return 0
+	}
+	for _, l := range lines {
+		if jobdata.sample_time == 0 {
+			m := snapshotPattern.FindStringSubmatch(l)
+			if len(m) == 3 {
+				if len(m[2]) > 0 {
+					jobdata.sample_time = parseTime(m[1], m[2])
+				} else {
+					jobdata.sample_time = parseTime(m[1], "secs")
+				}
+			}
+		}
+
+		if jobdata.start_time == 0 {
+			m := startPattern.FindStringSubmatch(l)
+			if len(m) == 3 {
+				if len(m[2]) > 0 {
+					jobdata.start_time = parseTime(m[1], m[2])
+				} else {
+					jobdata.start_time = parseTime(m[1], "secs")
+				}
+			}
+		}
+		if jobdata.elapsed_time == 0 {
+			m := elapsedPattern.FindStringSubmatch(l)
+			if len(m) == 3 {
+				if len(m[2]) > 0 {
+					jobdata.elapsed_time = parseTime(m[1], m[2])
+				} else {
+					jobdata.elapsed_time = parseTime(m[1], "secs")
+				}
+			}
+		}
+		m := linePattern.FindStringSubmatch(l)
+		if len(m) == 8 {
+			jobdata.op_units[m[1]] = m[3]
+			jobdata.op_data[m[1]] = map[string]int64{
+				"samples": parseNumber(m[2]),
+				"min":     parseNumber(m[4]),
+				"max":     parseNumber(m[5]),
+				"sum":     parseNumber(m[6]),
+				"sumsq":   parseNumber(m[7]),
+			}
+		}
+	}
+	return jobdata
+}
+
+func readCommandOutput(lines []string) map[string]map[string]LustreMetricData {
+	var data map[string]map[string]LustreMetricData = make(map[string]map[string]LustreMetricData)
+	devs := readDevices(lines)
+	for d, ddata := range devs {
+		data[d] = make(map[string]LustreMetricData)
+		jobs := readJobs(ddata)
+		for j, jdata := range jobs {
+			x := readJobdata(jdata)
+			data[d][j] = x
+		}
+	}
+	return data
+}

collectors/memstatMetric.go

@@ -12,8 +12,8 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const MEMSTATFILE = "/proc/meminfo"
@@ -40,8 +40,13 @@ type MemstatCollector struct {
 	sendMemUsed bool
 }
 
-func getStats(filename string) map[string]float64 {
+type MemstatStats struct {
-	stats := make(map[string]float64)
+	value float64
+	unit  string
+}
+
+func getStats(filename string) map[string]MemstatStats {
+	stats := make(map[string]MemstatStats)
 	file, err := os.Open(filename)
 	if err != nil {
 		cclog.Error(err.Error())
@@ -55,12 +60,19 @@ func getStats(filename string) map[string]float64 {
 		if len(linefields) == 3 {
 			v, err := strconv.ParseFloat(linefields[1], 64)
 			if err == nil {
-				stats[strings.Trim(linefields[0], ":")] = v
+				stats[strings.Trim(linefields[0], ":")] = MemstatStats{
+					value: v,
+					unit:  linefields[2],
+				}
 			}
 		} else if len(linefields) == 5 {
 			v, err := strconv.ParseFloat(linefields[3], 64)
 			if err == nil {
-				stats[strings.Trim(linefields[0], ":")] = v
+				cclog.ComponentDebug("getStats", strings.Trim(linefields[2], ":"), v, linefields[4])
+				stats[strings.Trim(linefields[2], ":")] = MemstatStats{
+					value: v,
+					unit:  linefields[4],
+				}
 			}
 		}
 	}
@@ -70,6 +82,7 @@ func getStats(filename string) map[string]float64 {
 func (m *MemstatCollector) Init(config json.RawMessage) error {
 	var err error
 	m.name = "MemstatCollector"
+	m.parallel = true
 	m.config.NodeStats = true
 	m.config.NumaStats = false
 	if len(config) > 0 {
@@ -78,7 +91,7 @@ func (m *MemstatCollector) Init(config json.RawMessage) error {
 			return err
 		}
 	}
-	m.meta = map[string]string{"source": m.name, "group": "Memory", "unit": "GByte"}
+	m.meta = map[string]string{"source": m.name, "group": "Memory"}
 	m.stats = make(map[string]int64)
 	m.matches = make(map[string]string)
 	m.tags = map[string]string{"type": "node"}
@@ -151,30 +164,55 @@ func (m *MemstatCollector) Read(interval time.Duration, output chan lp.CCMetric)
 		return
 	}
 
-	sendStats := func(stats map[string]float64, tags map[string]string) {
+	sendStats := func(stats map[string]MemstatStats, tags map[string]string) {
 		for match, name := range m.matches {
 			var value float64 = 0
+			var unit string = ""
 			if v, ok := stats[match]; ok {
-				value = v
+				value = v.value
+				if len(v.unit) > 0 {
+					unit = v.unit
 				}
-			y, err := lp.New(name, tags, m.meta, map[string]interface{}{"value": value * 1e-6}, time.Now())
+			}
+
+			y, err := lp.New(name, tags, m.meta, map[string]interface{}{"value": value}, time.Now())
 			if err == nil {
+				if len(unit) > 0 {
+					y.AddMeta("unit", unit)
+				}
 				output <- y
 			}
 		}
 		if m.sendMemUsed {
 			memUsed := 0.0
+			unit := ""
 			if totalVal, total := stats["MemTotal"]; total {
 				if freeVal, free := stats["MemFree"]; free {
+					memUsed = totalVal.value - freeVal.value
+					if len(totalVal.unit) > 0 {
+						unit = totalVal.unit
+					} else if len(freeVal.unit) > 0 {
+						unit = freeVal.unit
+					}
 					if bufVal, buffers := stats["Buffers"]; buffers {
+						memUsed -= bufVal.value
+						if len(bufVal.unit) > 0 && len(unit) == 0 {
+							unit = bufVal.unit
+						}
 						if cacheVal, cached := stats["Cached"]; cached {
-							memUsed = totalVal - (freeVal + bufVal + cacheVal)
+							memUsed -= cacheVal.value
+							if len(cacheVal.unit) > 0 && len(unit) == 0 {
+								unit = cacheVal.unit
 							}
 						}
 					}
 				}
-			y, err := lp.New("mem_used", tags, m.meta, map[string]interface{}{"value": memUsed * 1e-6}, time.Now())
+			}
+			y, err := lp.New("mem_used", tags, m.meta, map[string]interface{}{"value": memUsed}, time.Now())
 			if err == nil {
+				if len(unit) > 0 {
+					y.AddMeta("unit", unit)
+				}
 				output <- y
 			}
 		}

collectors/metricCollector.go

@@ -3,19 +3,16 @@ package collectors
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
-	"log"
-	"strconv"
-	"strings"
 	"time"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 type MetricCollector interface {
 	Name() string                      // Name of the metric collector
 	Init(config json.RawMessage) error // Initialize metric collector
 	Initialized() bool                 // Is metric collector initialized?
+	Parallel() bool
 	Read(duration time.Duration, output chan lp.CCMetric) // Read metrics from metric collector
 	Close()                                               // Close / finish metric collector
 }
@@ -23,6 +20,7 @@ type MetricCollector interface {
 type metricCollector struct {
 	name     string            // name of the metric
 	init     bool              // is metric collector initialized?
+	parallel bool              // can the metric collector be executed in parallel with others
 	meta     map[string]string // static meta data tags
 }
 
@@ -31,6 +29,11 @@ func (c *metricCollector) Name() string {
 	return c.name
 }
 
+// Name returns the name of the metric collector
+func (c *metricCollector) Parallel() bool {
+	return c.parallel
+}
+
 // Setup is for future use
 func (c *metricCollector) setup() error {
 	return nil
@@ -65,58 +68,6 @@ func stringArrayContains(array []string, str string) (int, bool) {
 	return -1, false
 }
 
-// SocketList returns the list of physical sockets as read from /proc/cpuinfo
-func SocketList() []int {
-	buffer, err := ioutil.ReadFile("/proc/cpuinfo")
-	if err != nil {
-		log.Print(err)
-		return nil
-	}
-	ll := strings.Split(string(buffer), "\n")
-	var packs []int
-	for _, line := range ll {
-		if strings.HasPrefix(line, "physical id") {
-			lv := strings.Fields(line)
-			id, err := strconv.ParseInt(lv[3], 10, 32)
-			if err != nil {
-				log.Print(err)
-				return packs
-			}
-			_, found := intArrayContains(packs, int(id))
-			if !found {
-				packs = append(packs, int(id))
-			}
-		}
-	}
-	return packs
-}
-
-// CpuList returns the list of physical CPUs (in contrast to logical CPUs) as read from /proc/cpuinfo
-func CpuList() []int {
-	buffer, err := ioutil.ReadFile("/proc/cpuinfo")
-	if err != nil {
-		log.Print(err)
-		return nil
-	}
-	ll := strings.Split(string(buffer), "\n")
-	var cpulist []int
-	for _, line := range ll {
-		if strings.HasPrefix(line, "processor") {
-			lv := strings.Fields(line)
-			id, err := strconv.ParseInt(lv[2], 10, 32)
-			if err != nil {
-				log.Print(err)
-				return cpulist
-			}
-			_, found := intArrayContains(cpulist, int(id))
-			if !found {
-				cpulist = append(cpulist, int(id))
-			}
-		}
-	}
-	return cpulist
-}
-
 // RemoveFromStringList removes the string r from the array of strings s
 // If r is not contained in the array an error is returned
 func RemoveFromStringList(s []string, r string) ([]string, error) {

collectors/netstatMetric.go

@@ -9,8 +9,8 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const NETSTATFILE = "/proc/net/dev"
@@ -39,6 +39,7 @@ type NetstatCollector struct {
 
 func (m *NetstatCollector) Init(config json.RawMessage) error {
 	m.name = "NetstatCollector"
+	m.parallel = true
 	m.setup()
 	m.lastTimestamp = time.Now()
 

collectors/nfsMetric.go

@@ -11,7 +11,7 @@ import (
 	"strings"
 	"time"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 // First part contains the code for the general NfsCollector.
@@ -36,7 +36,7 @@ type nfsCollector struct {
 }
 
 func (m *nfsCollector) initStats() error {
-	cmd := exec.Command(m.config.Nfsstats, `-l`)
+	cmd := exec.Command(m.config.Nfsstats, `-l`, `--all`)
 	cmd.Wait()
 	buffer, err := cmd.Output()
 	if err == nil {
@@ -52,7 +52,7 @@ func (m *nfsCollector) initStats() error {
 					if err == nil {
 						x := m.data[name]
 						x.current = value
-						x.last = 0
+						x.last = value
 						m.data[name] = x
 					}
 				}
@@ -63,7 +63,7 @@ func (m *nfsCollector) initStats() error {
 }
 
 func (m *nfsCollector) updateStats() error {
-	cmd := exec.Command(m.config.Nfsstats, `-l`)
+	cmd := exec.Command(m.config.Nfsstats, `-l`, `--all`)
 	cmd.Wait()
 	buffer, err := cmd.Output()
 	if err == nil {
@@ -114,6 +114,7 @@ func (m *nfsCollector) MainInit(config json.RawMessage) error {
 	m.data = make(map[string]NfsCollectorData)
 	m.initStats()
 	m.init = true
+	m.parallel = true
 	return nil
 }
 

collectors/numastatsMetric.go

@@ -10,8 +10,8 @@ import (
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 //
@@ -54,6 +54,7 @@ func (m *NUMAStatsCollector) Init(config json.RawMessage) error {
 	}
 
 	m.name = "NUMAStatsCollector"
+	m.parallel = true
 	m.setup()
 	m.meta = map[string]string{
 		"source": m.name,

collectors/nvidiaMetric.md

@@ -3,38 +3,74 @@
 
 ```json
   "nvidia": {
-    "exclude_devices" : [
+    "exclude_devices": [
-      "0","1"
+      "0","1", "0000000:ff:01.0"
     ],
     "exclude_metrics": [
-      "nv_fb_memory",
+      "nv_fb_mem_used",
       "nv_fan"
-    ]
+    ],
+    "process_mig_devices": false,
+    "use_pci_info_as_type_id": true,
+    "add_pci_info_tag": false,
+    "add_uuid_meta": false,
+    "add_board_number_meta": false,
+    "add_serial_meta": false,
+    "use_uuid_for_mig_device": false,
+    "use_slice_for_mig_device": false
   }
 ```
 
+The `nvidia` collector can be configured to leave out specific devices with the `exclude_devices` option. It takes IDs as supplied to the NVML with `nvmlDeviceGetHandleByIndex()` or the PCI address in NVML format (`%08X:%02X:%02X.0`). Metrics (listed below) that should not be sent to the MetricRouter can be excluded with the `exclude_metrics` option. Commonly only the physical GPUs are monitored. If MIG devices should be analyzed as well, set `process_mig_devices` (adds `stype=mig,stype-id=<mig_index>`). With the options `use_uuid_for_mig_device` and `use_slice_for_mig_device`, the `<mig_index>` can be replaced with the UUID (e.g. `MIG-6a9f7cc8-6d5b-5ce0-92de-750edc4d8849`) or the MIG slice name (e.g. `1g.5gb`).
+
+The metrics sent by the `nvidia` collector use `accelerator` as `type` tag. For the `type-id`, it uses the device handle index by default. With the `use_pci_info_as_type_id` option, the PCI ID is used instead. If both values should be added as tags, activate the `add_pci_info_tag` option. It uses the device handle index as `type-id` and adds the PCI ID as separate `pci_identifier` tag.
+
+Optionally, it is possible to add the UUID, the board part number and the serial to the meta informations. They are not sent to the sinks (if not configured otherwise).
+
+
 Metrics:
 * `nv_util`
 * `nv_mem_util`
-* `nv_mem_total`
+* `nv_fb_mem_total`
-* `nv_fb_memory`
+* `nv_fb_mem_used`
+* `nv_bar1_mem_total`
+* `nv_bar1_mem_used`
 * `nv_temp`
 * `nv_fan`
 * `nv_ecc_mode`
 * `nv_perf_state`
-* `nv_power_usage_report`
+* `nv_power_usage`
-* `nv_graphics_clock_report`
+* `nv_graphics_clock`
-* `nv_sm_clock_report`
+* `nv_sm_clock`
-* `nv_mem_clock_report`
+* `nv_mem_clock`
+* `nv_video_clock`
 * `nv_max_graphics_clock`
 * `nv_max_sm_clock`
 * `nv_max_mem_clock`
-* `nv_ecc_db_error`
+* `nv_max_video_clock`
-* `nv_ecc_sb_error`
+* `nv_ecc_uncorrected_error`
-* `nv_power_man_limit`
+* `nv_ecc_corrected_error`
+* `nv_power_max_limit`
 * `nv_encoder_util`
 * `nv_decoder_util`
+* `nv_remapped_rows_corrected`
+* `nv_remapped_rows_uncorrected`
+* `nv_remapped_rows_pending`
+* `nv_remapped_rows_failure`
+* `nv_compute_processes`
+* `nv_graphics_processes`
+* `nv_violation_power`
+* `nv_violation_thermal`
+* `nv_violation_sync_boost`
+* `nv_violation_board_limit`
+* `nv_violation_low_util`
+* `nv_violation_reliability`
+* `nv_violation_below_app_clock`
+* `nv_violation_below_base_clock`
+* `nv_nvlink_crc_flit_errors`
+* `nv_nvlink_crc_errors`
+* `nv_nvlink_ecc_errors`
+* `nv_nvlink_replay_errors`
+* `nv_nvlink_recovery_errors`
 
-It uses a separate `type` in the metrics. The output metric looks like this:
+Some metrics add the additional sub type tag (`stype`) like the `nv_nvlink_*` metrics set `stype=nvlink,stype-id=<link_number>`. 
-`<name>,type=accelerator,type-id=<nvidia-gpu-id> value=<metric value> <timestamp>`
-

collectors/rocmsmiMetric.go

@@ -0,0 +1,319 @@
+package collectors
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"time"
+
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+	"github.com/ClusterCockpit/go-rocm-smi/pkg/rocm_smi"
+)
+
+type RocmSmiCollectorConfig struct {
+	ExcludeMetrics     []string `json:"exclude_metrics,omitempty"`
+	ExcludeDevices     []string `json:"exclude_devices,omitempty"`
+	AddPciInfoTag      bool     `json:"add_pci_info_tag,omitempty"`
+	UsePciInfoAsTypeId bool     `json:"use_pci_info_as_type_id,omitempty"`
+	AddSerialMeta      bool     `json:"add_serial_meta,omitempty"`
+}
+
+type RocmSmiCollectorDevice struct {
+	device         rocm_smi.DeviceHandle
+	index          int
+	tags           map[string]string // default tags
+	meta           map[string]string // default meta information
+	excludeMetrics map[string]bool   // copy of exclude metrics from config
+}
+
+type RocmSmiCollector struct {
+	metricCollector
+	config  RocmSmiCollectorConfig // the configuration structure
+	devices []RocmSmiCollectorDevice
+}
+
+// Functions to implement MetricCollector interface
+// Init(...), Read(...), Close()
+// See: metricCollector.go
+
+// Init initializes the sample collector
+// Called once by the collector manager
+// All tags, meta data tags and metrics that do not change over the runtime should be set here
+func (m *RocmSmiCollector) Init(config json.RawMessage) error {
+	var err error = nil
+	// Always set the name early in Init() to use it in cclog.Component* functions
+	m.name = "RocmSmiCollector"
+	// This is for later use, also call it early
+	m.setup()
+	// Define meta information sent with each metric
+	// (Can also be dynamic or this is the basic set with extension through AddMeta())
+	//m.meta = map[string]string{"source": m.name, "group": "AMD"}
+	// Define tags sent with each metric
+	// The 'type' tag is always needed, it defines the granulatity of the metric
+	// node -> whole system
+	// socket -> CPU socket (requires socket ID as 'type-id' tag)
+	// cpu -> single CPU hardware thread (requires cpu ID as 'type-id' tag)
+	//m.tags = map[string]string{"type": "node"}
+	// Read in the JSON configuration
+	if len(config) > 0 {
+		err = json.Unmarshal(config, &m.config)
+		if err != nil {
+			cclog.ComponentError(m.name, "Error reading config:", err.Error())
+			return err
+		}
+	}
+
+	ret := rocm_smi.Init()
+	if ret != rocm_smi.STATUS_SUCCESS {
+		err = errors.New("failed to initialize ROCm SMI library")
+		cclog.ComponentError(m.name, err.Error())
+		return err
+	}
+
+	numDevs, ret := rocm_smi.NumMonitorDevices()
+	if ret != rocm_smi.STATUS_SUCCESS {
+		err = errors.New("failed to get number of GPUs from ROCm SMI library")
+		cclog.ComponentError(m.name, err.Error())
+		return err
+	}
+
+	exclDev := func(s string) bool {
+		skip_device := false
+		for _, excl := range m.config.ExcludeDevices {
+			if excl == s {
+				skip_device = true
+				break
+			}
+		}
+		return skip_device
+	}
+
+	m.devices = make([]RocmSmiCollectorDevice, 0)
+
+	for i := 0; i < numDevs; i++ {
+		str_i := fmt.Sprintf("%d", i)
+		if exclDev(str_i) {
+			continue
+		}
+		device, ret := rocm_smi.DeviceGetHandleByIndex(i)
+		if ret != rocm_smi.STATUS_SUCCESS {
+			err = fmt.Errorf("failed to get handle for GPU %d", i)
+			cclog.ComponentError(m.name, err.Error())
+			return err
+		}
+
+		pciInfo, ret := rocm_smi.DeviceGetPciInfo(device)
+		if ret != rocm_smi.STATUS_SUCCESS {
+			err = fmt.Errorf("failed to get PCI information for GPU %d", i)
+			cclog.ComponentError(m.name, err.Error())
+			return err
+		}
+
+		pciId := fmt.Sprintf(
+			"%08X:%02X:%02X.%X",
+			pciInfo.Domain,
+			pciInfo.Bus,
+			pciInfo.Device,
+			pciInfo.Function)
+
+		if exclDev(pciId) {
+			continue
+		}
+
+		dev := RocmSmiCollectorDevice{
+			device: device,
+			tags: map[string]string{
+				"type":    "accelerator",
+				"type-id": str_i,
+			},
+			meta: map[string]string{
+				"source": m.name,
+				"group":  "AMD",
+			},
+		}
+		if m.config.UsePciInfoAsTypeId {
+			dev.tags["type-id"] = pciId
+		} else if m.config.AddPciInfoTag {
+			dev.tags["pci_identifier"] = pciId
+		}
+
+		if m.config.AddSerialMeta {
+			serial, ret := rocm_smi.DeviceGetSerialNumber(device)
+			if ret != rocm_smi.STATUS_SUCCESS {
+				cclog.ComponentError(m.name, "Unable to get serial number for device at index", i, ":", rocm_smi.StatusStringNoError(ret))
+			} else {
+				dev.meta["serial"] = serial
+			}
+		}
+		// Add excluded metrics
+		dev.excludeMetrics = map[string]bool{}
+		for _, e := range m.config.ExcludeMetrics {
+			dev.excludeMetrics[e] = true
+		}
+		dev.index = i
+		m.devices = append(m.devices, dev)
+	}
+
+	// Set this flag only if everything is initialized properly, all required files exist, ...
+	m.init = true
+	return err
+}
+
+// Read collects all metrics belonging to the sample collector
+// and sends them through the output channel to the collector manager
+func (m *RocmSmiCollector) Read(interval time.Duration, output chan lp.CCMetric) {
+	// Create a sample metric
+	timestamp := time.Now()
+
+	for _, dev := range m.devices {
+		metrics, ret := rocm_smi.DeviceGetMetrics(dev.device)
+		if ret != rocm_smi.STATUS_SUCCESS {
+			cclog.ComponentError(m.name, "Unable to get metrics for device at index", dev.index, ":", rocm_smi.StatusStringNoError(ret))
+			continue
+		}
+
+		if !dev.excludeMetrics["rocm_gfx_util"] {
+			value := metrics.Average_gfx_activity
+			y, err := lp.New("rocm_gfx_util", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_umc_util"] {
+			value := metrics.Average_umc_activity
+			y, err := lp.New("rocm_umc_util", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_mm_util"] {
+			value := metrics.Average_mm_activity
+			y, err := lp.New("rocm_mm_util", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_avg_power"] {
+			value := metrics.Average_socket_power
+			y, err := lp.New("rocm_avg_power", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_temp_mem"] {
+			value := metrics.Temperature_mem
+			y, err := lp.New("rocm_temp_mem", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_temp_hotspot"] {
+			value := metrics.Temperature_hotspot
+			y, err := lp.New("rocm_temp_hotspot", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_temp_edge"] {
+			value := metrics.Temperature_edge
+			y, err := lp.New("rocm_temp_edge", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_temp_vrgfx"] {
+			value := metrics.Temperature_vrgfx
+			y, err := lp.New("rocm_temp_vrgfx", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_temp_vrsoc"] {
+			value := metrics.Temperature_vrsoc
+			y, err := lp.New("rocm_temp_vrsoc", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_temp_vrmem"] {
+			value := metrics.Temperature_vrmem
+			y, err := lp.New("rocm_temp_vrmem", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_gfx_clock"] {
+			value := metrics.Average_gfxclk_frequency
+			y, err := lp.New("rocm_gfx_clock", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_soc_clock"] {
+			value := metrics.Average_socclk_frequency
+			y, err := lp.New("rocm_soc_clock", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_u_clock"] {
+			value := metrics.Average_uclk_frequency
+			y, err := lp.New("rocm_u_clock", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_v0_clock"] {
+			value := metrics.Average_vclk0_frequency
+			y, err := lp.New("rocm_v0_clock", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_v1_clock"] {
+			value := metrics.Average_vclk1_frequency
+			y, err := lp.New("rocm_v1_clock", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_d0_clock"] {
+			value := metrics.Average_dclk0_frequency
+			y, err := lp.New("rocm_d0_clock", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_d1_clock"] {
+			value := metrics.Average_dclk1_frequency
+			y, err := lp.New("rocm_d1_clock", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+			if err == nil {
+				output <- y
+			}
+		}
+		if !dev.excludeMetrics["rocm_temp_hbm"] {
+			for i := 0; i < rocm_smi.NUM_HBM_INSTANCES; i++ {
+				value := metrics.Temperature_hbm[i]
+				y, err := lp.New("rocm_temp_hbm", dev.tags, dev.meta, map[string]interface{}{"value": value}, timestamp)
+				if err == nil {
+					y.AddTag("stype", "device")
+					y.AddTag("stype-id", fmt.Sprintf("%d", i))
+					output <- y
+				}
+			}
+		}
+	}
+
+}
+
+// Close metric collector: close network connection, close files, close libraries, ...
+// Called once by the collector manager
+func (m *RocmSmiCollector) Close() {
+	// Unset flag
+	ret := rocm_smi.Shutdown()
+	if ret != rocm_smi.STATUS_SUCCESS {
+		cclog.ComponentError(m.name, "Failed to shutdown ROCm SMI library")
+	}
+	m.init = false
+}

collectors/rocmsmiMetric.md

@@ -0,0 +1,47 @@
+
+## `rocm_smi` collector
+
+```json
+  "rocm_smi": {
+    "exclude_devices": [
+      "0","1", "0000000:ff:01.0"
+    ],
+    "exclude_metrics": [
+      "rocm_mm_util",
+      "rocm_temp_vrsoc"
+    ],
+    "use_pci_info_as_type_id": true,
+    "add_pci_info_tag": false,
+    "add_serial_meta": false,
+  }
+```
+
+The `rocm_smi` collector can be configured to leave out specific devices with the `exclude_devices` option. It takes logical IDs in the list of available devices or the PCI address similar to NVML format (`%08X:%02X:%02X.0`). Metrics (listed below) that should not be sent to the MetricRouter can be excluded with the `exclude_metrics` option. 
+
+The metrics sent by the `rocm_smi` collector use `accelerator` as `type` tag. For the `type-id`, it uses the device handle index by default. With the `use_pci_info_as_type_id` option, the PCI ID is used instead. If both values should be added as tags, activate the `add_pci_info_tag` option. It uses the device handle index as `type-id` and adds the PCI ID as separate `pci_identifier` tag.
+
+Optionally, it is possible to add the serial to the meta informations. They are not sent to the sinks (if not configured otherwise).
+
+
+Metrics:
+* `rocm_gfx_util`
+* `rocm_umc_util`
+* `rocm_mm_util`
+* `rocm_avg_power`
+* `rocm_temp_mem`
+* `rocm_temp_hotspot`
+* `rocm_temp_edge`
+* `rocm_temp_vrgfx`
+* `rocm_temp_vrsoc`
+* `rocm_temp_vrmem`
+* `rocm_gfx_clock`
+* `rocm_soc_clock`
+* `rocm_u_clock`
+* `rocm_v0_clock`
+* `rocm_v1_clock`
+* `rocm_d0_clock`
+* `rocm_d1_clock`
+* `rocm_temp_hbm`
+
+
+Some metrics add the additional sub type tag (`stype`) like the `rocm_temp_hbm` metrics set `stype=device,stype-id=<HBM_slice_number>`. 

collectors/sampleMetric.go

@@ -4,8 +4,8 @@ import (
 	"encoding/json"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 // These are the fields we read from the JSON configuration
@@ -35,6 +35,10 @@ func (m *SampleCollector) Init(config json.RawMessage) error {
 	m.name = "InternalCollector"
 	// This is for later use, also call it early
 	m.setup()
+	// Tell whether the collector should be run in parallel with others (reading files, ...)
+	// or it should be run serially, mostly for collectors acutally doing measurements
+	// because they should not measure the execution of the other collectors
+	m.parallel = true
 	// Define meta information sent with each metric
 	// (Can also be dynamic or this is the basic set with extension through AddMeta())
 	m.meta = map[string]string{"source": m.name, "group": "SAMPLE"}
@@ -42,7 +46,12 @@ func (m *SampleCollector) Init(config json.RawMessage) error {
 	// The 'type' tag is always needed, it defines the granulatity of the metric
 	// node -> whole system
 	// socket -> CPU socket (requires socket ID as 'type-id' tag)
-	// cpu -> single CPU hardware thread (requires cpu ID as 'type-id' tag)
+	// die -> CPU die (requires CPU die ID as 'type-id' tag)
+	// memoryDomain -> NUMA domain (requires NUMA domain ID as 'type-id' tag)
+	// llc -> Last level cache (requires last level cache ID as 'type-id' tag)
+	// core -> single CPU core that may consist of multiple hardware threads (SMT) (requires core ID as 'type-id' tag)
+	// hwthtread -> single CPU hardware thread (requires hardware thread ID as 'type-id' tag)
+	// accelerator -> A accelerator device like GPU or FPGA (requires an accelerator ID as 'type-id' tag)
 	m.tags = map[string]string{"type": "node"}
 	// Read in the JSON configuration
 	if len(config) > 0 {

collectors/sampleTimerMetric.go

@@ -5,8 +5,8 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 // These are the fields we read from the JSON configuration

collectors/schedstatMetric.go

@@ -0,0 +1,154 @@
+package collectors
+
+import (
+	"bufio"
+	"encoding/json"
+	"fmt"
+	"math"
+	"os"
+	"strconv"
+	"strings"
+	"time"
+
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+)
+
+const SCHEDSTATFILE = `/proc/schedstat`
+
+// These are the fields we read from the JSON configuration
+type SchedstatCollectorConfig struct {
+	ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
+}
+
+// This contains all variables we need during execution and the variables
+// defined by metricCollector (name, init, ...)
+type SchedstatCollector struct {
+	metricCollector
+	config        SchedstatCollectorConfig     // the configuration structure
+	lastTimestamp time.Time                    // Store time stamp of last tick to derive values
+	meta          map[string]string            // default meta information
+	cputags       map[string]map[string]string // default tags
+	olddata       map[string]map[string]int64  // default tags
+}
+
+// Functions to implement MetricCollector interface
+// Init(...), Read(...), Close()
+// See: metricCollector.go
+
+// Init initializes the sample collector
+// Called once by the collector manager
+// All tags, meta data tags and metrics that do not change over the runtime should be set here
+func (m *SchedstatCollector) Init(config json.RawMessage) error {
+	var err error = nil
+	// Always set the name early in Init() to use it in cclog.Component* functions
+	m.name = "SchedstatCollector"
+	// This is for later use, also call it early
+	m.setup()
+	// Tell whether the collector should be run in parallel with others (reading files, ...)
+	// or it should be run serially, mostly for collectors acutally doing measurements
+	// because they should not measure the execution of the other collectors
+	m.parallel = true
+	// Define meta information sent with each metric
+	// (Can also be dynamic or this is the basic set with extension through AddMeta())
+	m.meta = map[string]string{"source": m.name, "group": "SCHEDSTAT"}
+
+	// Read in the JSON configuration
+	if len(config) > 0 {
+		err = json.Unmarshal(config, &m.config)
+		if err != nil {
+			cclog.ComponentError(m.name, "Error reading config:", err.Error())
+			return err
+		}
+	}
+
+	// Check input file
+	file, err := os.Open(string(SCHEDSTATFILE))
+	if err != nil {
+		cclog.ComponentError(m.name, err.Error())
+	}
+	defer file.Close()
+
+	// Pre-generate tags for all CPUs
+	num_cpus := 0
+	m.cputags = make(map[string]map[string]string)
+	m.olddata = make(map[string]map[string]int64)
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		linefields := strings.Fields(line)
+		if strings.HasPrefix(linefields[0], "cpu") && strings.Compare(linefields[0], "cpu") != 0 {
+			cpustr := strings.TrimLeft(linefields[0], "cpu")
+			cpu, _ := strconv.Atoi(cpustr)
+			running, _ := strconv.ParseInt(linefields[7], 10, 64)
+			waiting, _ := strconv.ParseInt(linefields[8], 10, 64)
+			m.cputags[linefields[0]] = map[string]string{"type": "hwthread", "type-id": fmt.Sprintf("%d", cpu)}
+			m.olddata[linefields[0]] = map[string]int64{"running": running, "waiting": waiting}
+			num_cpus++
+		}
+	}
+
+	// Save current timestamp
+	m.lastTimestamp = time.Now()
+
+	// Set this flag only if everything is initialized properly, all required files exist, ...
+	m.init = true
+	return err
+}
+
+func (m *SchedstatCollector) ParseProcLine(linefields []string, tags map[string]string, output chan lp.CCMetric, now time.Time, tsdelta time.Duration) {
+	running, _ := strconv.ParseInt(linefields[7], 10, 64)
+	waiting, _ := strconv.ParseInt(linefields[8], 10, 64)
+	diff_running := running - m.olddata[linefields[0]]["running"]
+	diff_waiting := waiting - m.olddata[linefields[0]]["waiting"]
+
+	var l_running float64 = float64(diff_running) / tsdelta.Seconds() / (math.Pow(1000, 3))
+	var l_waiting float64 = float64(diff_waiting) / tsdelta.Seconds() / (math.Pow(1000, 3))
+
+	m.olddata[linefields[0]]["running"] = running
+	m.olddata[linefields[0]]["waiting"] = waiting
+	value := l_running + l_waiting
+
+	y, err := lp.New("cpu_load_core", tags, m.meta, map[string]interface{}{"value": value}, now)
+	if err == nil {
+		// Send it to output channel
+		output <- y
+	}
+}
+
+// Read collects all metrics belonging to the sample collector
+// and sends them through the output channel to the collector manager
+func (m *SchedstatCollector) Read(interval time.Duration, output chan lp.CCMetric) {
+	if !m.init {
+		return
+	}
+
+	//timestamps
+	now := time.Now()
+	tsdelta := now.Sub(m.lastTimestamp)
+
+	file, err := os.Open(string(SCHEDSTATFILE))
+	if err != nil {
+		cclog.ComponentError(m.name, err.Error())
+	}
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+	for scanner.Scan() {
+		line := scanner.Text()
+		linefields := strings.Fields(line)
+		if strings.HasPrefix(linefields[0], "cpu") {
+			m.ParseProcLine(linefields, m.cputags[linefields[0]], output, now, tsdelta)
+		}
+	}
+
+	m.lastTimestamp = now
+
+}
+
+// Close metric collector: close network connection, close files, close libraries, ...
+// Called once by the collector manager
+func (m *SchedstatCollector) Close() {
+	// Unset flag
+	m.init = false
+}

collectors/schedstatMetric.md

@@ -0,0 +1,11 @@
+
+## `schedstat` collector
+```json
+  "schedstat": {
+  }
+```
+
+The `schedstat` collector reads data from /proc/schedstat and calculates a load value, separated by hwthread. This might be useful to detect bad cpu pinning on shared nodes etc. 
+
+Metric:
+* `cpu_load_core`

collectors/tempMetric.go

@@ -3,14 +3,14 @@ package collectors
 import (
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 // See: https://www.kernel.org/doc/html/latest/hwmon/sysfs-interface.html
@@ -50,6 +50,7 @@ func (m *TempCollector) Init(config json.RawMessage) error {
 	}
 
 	m.name = "TempCollector"
+	m.parallel = true
 	m.setup()
 	if len(config) > 0 {
 		err := json.Unmarshal(config, &m.config)
@@ -82,14 +83,14 @@ func (m *TempCollector) Init(config json.RawMessage) error {
 
 		// sensor name
 		nameFile := filepath.Join(filepath.Dir(file), "name")
-		name, err := ioutil.ReadFile(nameFile)
+		name, err := os.ReadFile(nameFile)
 		if err == nil {
 			sensor.name = strings.TrimSpace(string(name))
 		}
 
 		// sensor label
 		labelFile := strings.TrimSuffix(file, "_input") + "_label"
-		label, err := ioutil.ReadFile(labelFile)
+		label, err := os.ReadFile(labelFile)
 		if err == nil {
 			sensor.label = strings.TrimSpace(string(label))
 		}
@@ -116,6 +117,10 @@ func (m *TempCollector) Init(config json.RawMessage) error {
 		}
 
 		// Sensor file
+		_, err = os.ReadFile(file)
+		if err != nil {
+			continue
+		}
 		sensor.file = file
 
 		// Sensor tags
@@ -134,7 +139,7 @@ func (m *TempCollector) Init(config json.RawMessage) error {
 		// max temperature
 		if m.config.ReportMaxTemp {
 			maxTempFile := strings.TrimSuffix(file, "_input") + "_max"
-			if buffer, err := ioutil.ReadFile(maxTempFile); err == nil {
+			if buffer, err := os.ReadFile(maxTempFile); err == nil {
 				if x, err := strconv.ParseInt(strings.TrimSpace(string(buffer)), 10, 64); err == nil {
 					sensor.maxTempName = strings.Replace(sensor.metricName, "temp", "max_temp", 1)
 					sensor.maxTemp = x / 1000
@@ -145,7 +150,7 @@ func (m *TempCollector) Init(config json.RawMessage) error {
 		// critical temperature
 		if m.config.ReportCriticalTemp {
 			criticalTempFile := strings.TrimSuffix(file, "_input") + "_crit"
-			if buffer, err := ioutil.ReadFile(criticalTempFile); err == nil {
+			if buffer, err := os.ReadFile(criticalTempFile); err == nil {
 				if x, err := strconv.ParseInt(strings.TrimSpace(string(buffer)), 10, 64); err == nil {
 					sensor.critTempName = strings.Replace(sensor.metricName, "temp", "crit_temp", 1)
 					sensor.critTemp = x / 1000
@@ -170,7 +175,7 @@ func (m *TempCollector) Read(interval time.Duration, output chan lp.CCMetric) {
 
 	for _, sensor := range m.sensors {
 		// Read sensor file
-		buffer, err := ioutil.ReadFile(sensor.file)
+		buffer, err := os.ReadFile(sensor.file)
 		if err != nil {
 			cclog.ComponentError(
 				m.name,

collectors/topprocsMetric.go

@@ -9,7 +9,7 @@ import (
 	"strings"
 	"time"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const MAX_NUM_PROCS = 10
@@ -28,6 +28,7 @@ type TopProcsCollector struct {
 func (m *TopProcsCollector) Init(config json.RawMessage) error {
 	var err error
 	m.name = "TopProcsCollector"
+	m.parallel = true
 	m.tags = map[string]string{"type": "node"}
 	m.meta = map[string]string{"source": m.name, "group": "TopProcs"}
 	if len(config) > 0 {

config.json

@@ -1,8 +1,8 @@
 {
-  "sinks": "sinks.json",
+  "sinks": "./sinks.json",
-  "collectors" : "collectors.json",
+  "collectors" : "./collectors.json",
-  "receivers" : "receivers.json",
+  "receivers" : "./receivers.json",
-  "router" : "router.json",
+  "router" : "./router.json",
-  "interval": 10,
+  "interval": "10s",
-  "duration": 1
+  "duration": "1s"
 }

docs/building.md

@@ -0,0 +1,60 @@
+# Building the cc-metric-collector
+
+In most cases, a simple `make` in the main folder is enough to get a `cc-metric-collector` binary. It is basically a `go build` but some collectors require additional tasks. There is currently no Golang interface to LIKWID, so it uses `cgo` to create bindings but `cgo` requires the LIKWID header files. Therefore, it checks whether LIKWID is installed and if not it downloads LIKWID and copies the headers.
+
+## System integration
+
+The main configuration settings for system integration are pre-defined in `scripts/cc-metric-collector.config`. The file contains the UNIX user and group used for execution, the PID file location and other settings. Adjust it accordingly and copy it to `/etc/default/cc-metric-collector`
+
+```bash
+$ install --mode 644 \
+          --owner $CC_USER \
+          --group $CC_GROUP \
+          scripts/cc-metric-collector.config /etc/default/cc-metric-collector
+$ edit /etc/default/cc-metric-collector
+```
+
+### SysVinit and similar
+
+If you are using a init system based in `/etc/init.d` daemons, you can use the sample `scripts/cc-metric-collector.init`. It reads the basic configuration from `/etc/default/cc-metric-collector`
+
+```bash
+$ install --mode 755 \
+          --owner $CC_USER \
+          --group $CC_GROUP \
+          scripts/cc-metric-collector.init /etc/init.d/cc-metric-collector
+```
+
+### Systemd
+
+If you are using `systemd` as init system, you can use the sample systemd service file `scripts/cc-metric-collector.service`, the configuration file `scripts/cc-metric-collector.config`.
+
+```bash
+$ install --mode 644  \
+          --owner $CC_USER \
+          --group $CC_GROUP \
+           scripts/cc-metric-collector.service /etc/systemd/system/cc-metric-collector.service
+$ systemctl enable cc-metric-collector
+```
+
+## RPM
+
+In order to get a RPM packages for cc-metric-collector, just use:
+
+```bash
+$ make RPM
+```
+
+It uses the RPM SPEC file `scripts/cc-metric-collector.spec` and requires the RPM tools (`rpm` and `rpmspec`) and `git`.
+
+## DEB
+
+In order to get very simple Debian packages for cc-metric-collector, just use:
+
+```bash
+$ make DEB
+```
+
+It uses the DEB control file `scripts/cc-metric-collector.control` and requires `dpkg-deb`, `awk`, `sed` and `git`. It creates only a binary deb package.
+
+_This option is not well tested and therefore experimental_

docs/introduction.md

@@ -0,0 +1,23 @@
+# The ClusterCockpit Project
+
+The ClusterCockpit project is a joined project of computing centers in Europe to set up a cluster monitoring stack for small to mid-sized computing centers under the lead of NHR@FAU.
+
+# The ClusterCockpit Stack
+
+In cluster environment, there are commonly a lot of systems dedicated for computation, backend servers for file systems and frontend servers for the user interaction and cluster control. The ClusterCockpit Stack is mainly used for monitoring the compute systems with some interaction to the frontend servers. It consists of multiple components:
+
+- cc-metric-collector: Monitor resource usage on the compute systems
+- cc-metric-store: In-memory database
+- cc-backend & cc-frontend: The web-based visualizer
+
+# CC Metric Collector
+
+The CC Metric Collector project was started to provide a useful set of metrics for HPC and data science related compute systems. It runs as a system daemon and gathers system data periodically to forward the metrics to one or more databases. One of the provided backends can be used for the cc-metric-store but many others exist like InfluxDB time-series databases, the Ganglia Monitoring System or the Prometheus Monitoring System.
+
+The data is gathered by so-called "Collectors", forwarded to an internal router for on-the-fly manipulation (tagging, aggregation, ...) which pushes the metrics to the different metric writers called "Sinks". There is a forth component, the "Receivers", which receive data through some networking system like a HTTP server at any time.
+
+# CC Metric Store
+The CC Metric Store is a data management system with short-term in-memory and long-term file-base metric storage.
+
+# CC Backend and CC Frontend
+The CC Backend and Frontend form together the web interface for ClusterCockpit.

go.mod

@@ -1,19 +1,40 @@
 module github.com/ClusterCockpit/cc-metric-collector
 
-go 1.16
+go 1.18
 
 require (
-	github.com/NVIDIA/go-nvml v0.11.1-0
+	github.com/ClusterCockpit/cc-units v0.3.0
-	github.com/influxdata/influxdb-client-go/v2 v2.7.0
+	github.com/ClusterCockpit/go-rocm-smi v0.3.0
+	github.com/NVIDIA/go-nvml v0.11.6-0
+	github.com/PaesslerAG/gval v1.2.0
+	github.com/gorilla/mux v1.8.0
+	github.com/influxdata/influxdb-client-go/v2 v2.9.1
 	github.com/influxdata/line-protocol v0.0.0-20210922203350-b1ad95c89adf
-	github.com/nats-io/nats.go v1.13.1-0.20211122170419-d7c1d78a50fc
+	github.com/nats-io/nats.go v1.16.0
-	golang.org/x/sys v0.0.0-20220114195835-da31bd327af9
+	github.com/prometheus/client_golang v1.12.2
-	gopkg.in/Knetic/govaluate.v2 v2.3.0
+	github.com/stmcginnis/gofish v0.13.0
+	github.com/tklauser/go-sysconf v0.3.10
+	golang.org/x/sys v0.0.0-20220712014510-0a85c31ab51e
 )
 
 require (
-	github.com/PaesslerAG/gval v1.1.2
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/deepmap/oapi-codegen v1.11.0 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/nats-io/nats-server/v2 v2.7.0 // indirect
+	github.com/google/uuid v1.3.0 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/nats-io/nats-server/v2 v2.8.4 // indirect
+	github.com/nats-io/nkeys v0.3.0 // indirect
+	github.com/nats-io/nuid v1.0.1 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/shopspring/decimal v1.3.1 // indirect
+	github.com/tklauser/numcpus v0.4.0 // indirect
+	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d // indirect
+	golang.org/x/net v0.0.0-20220708220712-1185a9018129 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
 )

go.sum

@@ -1,145 +1,624 @@
-github.com/NVIDIA/go-nvml v0.11.1-0 h1:XHSz3zZKC4NCP2ja1rI7++DXFhA+uDhdYa3MykCTGHY=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/NVIDIA/go-nvml v0.11.1-0/go.mod h1:hy7HYeQy335x6nEss0Ne3PYqleRa6Ct+VKD9RQ4nyFs=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/PaesslerAG/gval v1.1.2 h1:EROKxV4/fAKWb0Qoj7NOxmHZA7gcpjOV9XgiRZMRCUU=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-github.com/PaesslerAG/gval v1.1.2/go.mod h1:Fa8gfkCmUsELXgayr8sfL/sw+VzCVoa03dcOcR/if2w=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
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+cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
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-github.com/deepmap/oapi-codegen v1.8.2 h1:SegyeYGcdi0jLLrpbCMoJxnUUn8GBXHsvr4rbzjuhfU=
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-github.com/getkin/kin-openapi v0.61.0/go.mod h1:7Yn5whZr5kJi6t+kShccXS8ae1APpYTW6yheSwk8Yi4=
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internal/ccMetric/README.md

@@ -1,32 +0,0 @@
-# ClusterCockpit metrics
-
-As described in the [ClusterCockpit specifications](https://github.com/ClusterCockpit/cc-specifications), the whole ClusterCockpit stack uses metrics in the InfluxDB line protocol format. This is also the input and output format for the ClusterCockpit Metric Collector but internally it uses an extended format while processing, named CCMetric.
-
-It is basically a copy of the [InfluxDB line protocol](https://github.com/influxdata/line-protocol) `MutableMetric` interface with one extension. Besides the tags and fields, it contains a list of meta information (re-using the `Tag` structure of the original protocol):
-
-```golang
-type ccMetric struct {
-    name   string            // same as
-    tags   []*influx.Tag     // original
-    fields []*influx.Field   // Influx
-    tm     time.Time         // line-protocol
-    meta   []*influx.Tag
-}
-
-type CCMetric interface {
-    influx.MutableMetric        // the same functions as defined by influx.MutableMetric
-    RemoveTag(key string)       // this is not published by the original influx.MutableMetric
-    Meta() map[string]string
-    MetaList() []*inlux.Tag
-    AddMeta(key, value string)
-    HasMeta(key string) bool
-    GetMeta(key string) (string, bool)
-    RemoveMeta(key string)
-}
-```
-
-The `CCMetric` interface provides the same functions as the `MutableMetric` like `{Add, Remove, Has}{Tag, Field}` and additionally provides `{Add, Remove, Has}Meta`.
-
-The InfluxDB protocol creates a new metric with `influx.New(name, tags, fields, time)` while CCMetric uses `ccMetric.New(name, tags, meta, fields, time)` where `tags` and `meta` are both of type `map[string]string`.
-
-You can copy a CCMetric with `FromMetric(other CCMetric) CCMetric`. If you get an `influx.Metric` from a function, like the line protocol parser, you can use `FromInfluxMetric(other influx.Metric) CCMetric` to get a CCMetric out of it (see `NatsReceiver` for an example).

internal/metricAggregator/metricAggregator.go

@@ -9,10 +9,10 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
-	topo "github.com/ClusterCockpit/cc-metric-collector/internal/ccTopology"
+	topo "github.com/ClusterCockpit/cc-metric-collector/pkg/ccTopology"
 
 	"github.com/PaesslerAG/gval"
 )

internal/metricAggregator/metricAggregatorFunctions.go

@@ -8,8 +8,8 @@ import (
 	"sort"
 	"strings"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	topo "github.com/ClusterCockpit/cc-metric-collector/internal/ccTopology"
+	topo "github.com/ClusterCockpit/cc-metric-collector/pkg/ccTopology"
 )
 
 /*
@@ -246,7 +246,7 @@ func matchfunc(args ...interface{}) (interface{}, error) {
 func getCpuCoreFunc(args ...interface{}) (interface{}, error) {
 	switch cpuid := args[0].(type) {
 	case int:
-		return topo.GetCpuCore(cpuid), nil
+		return topo.GetHwthreadCore(cpuid), nil
 	}
 	return -1, errors.New("function 'getCpuCore' accepts only an 'int' cpuid")
 }
@@ -255,7 +255,7 @@ func getCpuCoreFunc(args ...interface{}) (interface{}, error) {
 func getCpuSocketFunc(args ...interface{}) (interface{}, error) {
 	switch cpuid := args[0].(type) {
 	case int:
-		return topo.GetCpuSocket(cpuid), nil
+		return topo.GetHwthreadSocket(cpuid), nil
 	}
 	return -1, errors.New("function 'getCpuCore' accepts only an 'int' cpuid")
 }
@@ -264,7 +264,7 @@ func getCpuSocketFunc(args ...interface{}) (interface{}, error) {
 func getCpuNumaDomainFunc(args ...interface{}) (interface{}, error) {
 	switch cpuid := args[0].(type) {
 	case int:
-		return topo.GetCpuNumaDomain(cpuid), nil
+		return topo.GetHwthreadNumaDomain(cpuid), nil
 	}
 	return -1, errors.New("function 'getCpuNuma' accepts only an 'int' cpuid")
 }
@@ -273,7 +273,7 @@ func getCpuNumaDomainFunc(args ...interface{}) (interface{}, error) {
 func getCpuDieFunc(args ...interface{}) (interface{}, error) {
 	switch cpuid := args[0].(type) {
 	case int:
-		return topo.GetCpuDie(cpuid), nil
+		return topo.GetHwthreadDie(cpuid), nil
 	}
 	return -1, errors.New("function 'getCpuDie' accepts only an 'int' cpuid")
 }
@@ -336,7 +336,7 @@ func getCpuListOfDieFunc(args ...interface{}) (interface{}, error) {
 
 // wrapper function to get a list of all cpuids of the node
 func getCpuListOfNode(args ...interface{}) (interface{}, error) {
-	return topo.CpuList(), nil
+	return topo.HwthreadList(), nil
 }
 
 // helper function to get the cpuid list for a CCMetric type tag set (type and type-id)
@@ -348,14 +348,14 @@ func getCpuListOfType(args ...interface{}) (interface{}, error) {
 	case string:
 		switch typ {
 		case "node":
-			return topo.CpuList(), nil
+			return topo.HwthreadList(), nil
 		case "socket":
 			return getCpuListOfSocketFunc(args[1])
 		case "numadomain":
 			return getCpuListOfNumaDomainFunc(args[1])
 		case "core":
 			return getCpuListOfCoreFunc(args[1])
-		case "cpu":
+		case "hwthread":
 			var cpu int
 
 			switch id := args[1].(type) {

internal/metricRouter/README.md

@@ -8,6 +8,8 @@ The CCMetric router sits in between the collectors and the sinks and can be used
 {
     "num_cache_intervals" : 1,
     "interval_timestamp" : true,
+    "hostname_tag" : "hostname",
+    "max_forward" : 50,
     "add_tags" : [
         {
             "key" : "cluster",
@@ -50,11 +52,30 @@ The CCMetric router sits in between the collectors and the sinks and can be used
     ],
     "rename_metrics" : {
         "metric_12345" : "mymetric"
+    },
+    "normalize_units" : true,
+    "change_unit_prefix" : {
+      "mem_used" : "G",
+      "mem_total" : "G"
     }
 }
 ```
 
 There are three main options `add_tags`, `delete_tags` and `interval_timestamp`. `add_tags` and `delete_tags` are lists consisting of dicts with `key`, `value` and `if`. The `value` can be omitted in the `delete_tags` part as it only uses the `key` for removal. The `interval_timestamp` setting means that a unique timestamp is applied to all metrics traversing the router during an interval.
+
+# Processing order in the router
+
+- Add the `hostname_tag` tag (if sent by collectors or cache)
+- If `interval_timestamp == true`, change time of metrics
+- Check if metric should be dropped (`drop_metrics` and `drop_metrics_if`)
+- Add tags from `add_tags`
+- Delete tags from `del_tags`
+- Rename metric based on `rename_metrics` and store old name as `oldname` in meta information
+- Add tags from `add_tags` (if you used the new name in the `if` condition)
+- Delete tags from `del_tags` (if you used the new name in the `if` condition)
+- Send to sinks
+- Move to cache (if `num_cache_intervals > 0`)
+
 # The `interval_timestamp` option
 
 The collectors' `Read()` functions are not called simultaneously and therefore the metrics gathered in an interval can have different timestamps. If you want to avoid that and have a common timestamp (the beginning of the interval), set this option to `true` and the MetricRouter sets the time.
@@ -65,6 +86,14 @@ If the MetricRouter should buffer metrics of intervals in a MetricCache, this op
 
 A `num_cache_intervals > 0` is required to use the `interval_aggregates` option.
 
+# The `hostname_tag` option
+
+By default, the router tags metrics with the hostname for all locally created metrics. The default tag name is `hostname`, but it can be changed if your organization wants anything else
+
+# The `max_forward` option
+
+Every time the router receives a metric through any of the channels, it tries to directly read up to `max_forward` metrics from the same channel. This was done as the router thread would go to sleep and wake up with every arriving metric. The default are `50` metrics at once and `max_forward` needs to greater than `1`.
+
 # The `rename_metrics` option
 
 In the ClusterCockpit world we specified a set of standard metrics. Since some collectors determine the metric names based on files, execuables and libraries, they might change from system to system (or installation to installtion, OS to OS, ...). In order to get the common names, you can rename incoming metrics before sending them to the sink. If the metric name matches the `oldname`, it is changed to `newname`
@@ -168,6 +197,14 @@ This option takes a list of evaluable conditions and performs them one after the
 ```
 The first line is comparable with the example in `drop_metrics`, it drops all metrics starting with `drop_metric_` and ending with a number. The second line drops all metrics of the first hardware thread (**not** recommended)
 
+# Manipulating the metric units
+
+## The `normalize_units` option
+The cc-metric-collector tries to read the data from the system as it is reported. If available, it tries to read the metric unit from the system as well (e.g. from `/proc/meminfo`). The problem is that, depending on the source, the metric units are named differently. Just think about `byte`, `Byte`, `B`, `bytes`, ...
+The [cc-units](https://github.com/ClusterCockpit/cc-units) package provides us a normalization option to use the same metric unit name for all metrics. It this option is set to true, all `unit` meta tags are normalized.
+
+## The `change_unit_prefix` section
+It is often the case that metrics are reported by the system using a rather outdated unit prefix (like `/proc/meminfo` still uses kByte despite current memory sizes are in the GByte range). If you want to change the prefix of a unit, you can do that with the help of [cc-units](https://github.com/ClusterCockpit/cc-units). The setting works on the metric name and requires the new prefix for the metric. The cc-units package determines the scaling factor.
 
 # Aggregate metric values of the current interval with the `interval_aggregates` option
 
@@ -215,3 +252,22 @@ Use cases for `interval_aggregates`:
     }
   }
 ```
+
+# Order of operations
+
+The router performs the above mentioned options in a specific order. In order to get the logic you want for a specific metric, it is crucial to know the processing order:
+
+- Add the `hostname` tag (c)
+- Manipulate the timestamp to the interval timestamp (c,r)
+- Drop metrics based on `drop_metrics` and `drop_metrics_if` (c,r)
+- Add tags based on `add_tags` (c,r)
+- Delete tags based on `del_tags` (c,r)
+- Rename metric based on `rename_metric` (c,r)
+  - Add tags based on `add_tags` to still work if the configuration uses the new name (c,r) 
+  - Delete tags based on `del_tags` to still work if the configuration uses the new name (c,r)
+- Normalize units when `normalize_units` is set (c,r)
+- Convert unit prefix based on `change_unit_prefix` (c,r)
+
+Legend:
+- 'c' if metric is coming from a collector
+- 'r' if metric is coming from a receiver

internal/metricRouter/metricCache.go

@@ -4,11 +4,11 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
 	agg "github.com/ClusterCockpit/cc-metric-collector/internal/metricAggregator"
-	mct "github.com/ClusterCockpit/cc-metric-collector/internal/multiChanTicker"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+	mct "github.com/ClusterCockpit/cc-metric-collector/pkg/multiChanTicker"
 )
 
 type metricCachePeriod struct {

internal/metricRouter/metricRouter.go

@@ -7,11 +7,12 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	agg "github.com/ClusterCockpit/cc-metric-collector/internal/metricAggregator"
-	mct "github.com/ClusterCockpit/cc-metric-collector/internal/multiChanTicker"
+	mct "github.com/ClusterCockpit/cc-metric-collector/pkg/multiChanTicker"
+	units "github.com/ClusterCockpit/cc-units"
 )
 
 const ROUTER_MAX_FORWARD = 50
@@ -35,6 +36,8 @@ type metricRouterConfig struct {
 	IntervalStamp     bool                                 `json:"interval_timestamp"`  // Update timestamp periodically by ticker each interval?
 	NumCacheIntervals int                                  `json:"num_cache_intervals"` // Number of intervals of cached metrics for evaluation
 	MaxForward        int                                  `json:"max_forward"`         // Number of maximal forwarded metrics at one select
+	NormalizeUnits    bool                                 `json:"normalize_units"`     // Check unit meta flag and normalize it using cc-units
+	ChangeUnitPrefix  map[string]string                    `json:"change_unit_prefix"`  // Add prefix that should be applied to the metrics
 	dropMetrics       map[string]bool                      // Internal map for O(1) lookup
 }
 
@@ -48,7 +51,6 @@ type metricRouter struct {
 	done        chan bool           // channel to finish / stop metric router
 	wg          *sync.WaitGroup     // wait group for all goroutines in cc-metric-collector
 	timestamp   time.Time           // timestamp periodically updated by ticker each interval
-	timerdone   chan bool           // channel to finish / stop timestamp updater
 	ticker      mct.MultiChanTicker // periodically ticking once each interval
 	config      metricRouterConfig  // json encoded config for metric router
 	cache       MetricCache         // pointer to MetricCache
@@ -103,7 +105,10 @@ func (r *metricRouter) Init(ticker mct.MultiChanTicker, wg *sync.WaitGroup, rout
 		cclog.ComponentError("MetricRouter", err.Error())
 		return err
 	}
+	r.maxForward = 1
+	if r.config.MaxForward > r.maxForward {
 		r.maxForward = r.config.MaxForward
+	}
 	if r.config.NumCacheIntervals > 0 {
 		r.cache, err = NewCache(r.cache_input, r.ticker, &r.cachewg, r.config.NumCacheIntervals)
 		if err != nil {
@@ -121,29 +126,6 @@ func (r *metricRouter) Init(ticker mct.MultiChanTicker, wg *sync.WaitGroup, rout
 	return nil
 }
 
-// StartTimer starts a timer which updates timestamp periodically
-func (r *metricRouter) StartTimer() {
-	m := make(chan time.Time)
-	r.ticker.AddChannel(m)
-	r.timerdone = make(chan bool)
-
-	r.wg.Add(1)
-	go func() {
-		defer r.wg.Done()
-		for {
-			select {
-			case <-r.timerdone:
-				close(r.timerdone)
-				cclog.ComponentDebug("MetricRouter", "TIMER DONE")
-				return
-			case t := <-m:
-				r.timestamp = t
-			}
-		}
-	}()
-	cclog.ComponentDebug("MetricRouter", "TIMER START")
-}
-
 func getParamMap(point lp.CCMetric) map[string]interface{} {
 	params := make(map[string]interface{})
 	params["metric"] = point
@@ -228,12 +210,45 @@ func (r *metricRouter) dropMetric(point lp.CCMetric) bool {
 	return false
 }
 
+func (r *metricRouter) prepareUnit(point lp.CCMetric) bool {
+	if r.config.NormalizeUnits {
+		if in_unit, ok := point.GetMeta("unit"); ok {
+			u := units.NewUnit(in_unit)
+			if u.Valid() {
+				point.AddMeta("unit", u.Short())
+			}
+		}
+	}
+	if newP, ok := r.config.ChangeUnitPrefix[point.Name()]; ok {
+
+		newPrefix := units.NewPrefix(newP)
+
+		if in_unit, ok := point.GetMeta("unit"); ok && newPrefix != units.InvalidPrefix {
+			u := units.NewUnit(in_unit)
+			if u.Valid() {
+				cclog.ComponentDebug("MetricRouter", "Change prefix to", newP, "for metric", point.Name())
+				conv, out_unit := units.GetUnitPrefixFactor(u, newPrefix)
+				if conv != nil && out_unit.Valid() {
+					if val, ok := point.GetField("value"); ok {
+						point.AddField("value", conv(val))
+						point.AddMeta("unit", out_unit.Short())
+					}
+				}
+			}
+
+		}
+	}
+
+	return true
+}
+
 // Start starts the metric router
 func (r *metricRouter) Start() {
 	// start timer if configured
 	r.timestamp = time.Now()
+	timeChan := make(chan time.Time)
 	if r.config.IntervalStamp {
-		r.StartTimer()
+		r.ticker.AddChannel(timeChan)
 	}
 
 	// Router manager is done
@@ -252,9 +267,11 @@ func (r *metricRouter) Start() {
 		if new, ok := r.config.RenameMetrics[name]; ok {
 			point.SetName(new)
 			point.AddMeta("oldname", name)
-		}
 			r.DoAddTags(point)
 			r.DoDelTags(point)
+		}
+
+		r.prepareUnit(point)
 
 		for _, o := range r.outputs {
 			o <- point
@@ -264,7 +281,9 @@ func (r *metricRouter) Start() {
 	// Foward message received from collector channel
 	coll_forward := func(p lp.CCMetric) {
 		// receive from metric collector
+		if !p.HasTag(r.config.HostnameTagName) {
 			p.AddTag(r.config.HostnameTagName, r.hostname)
+		}
 		if r.config.IntervalStamp {
 			p.SetTime(r.timestamp)
 		}
@@ -293,7 +312,9 @@ func (r *metricRouter) Start() {
 	cache_forward := func(p lp.CCMetric) {
 		// receive from metric collector
 		if !r.dropMetric(p) {
+			if !p.HasTag(r.config.HostnameTagName) {
 				p.AddTag(r.config.HostnameTagName, r.hostname)
+			}
 			forward(p)
 		}
 	}
@@ -313,6 +334,10 @@ func (r *metricRouter) Start() {
 				done()
 				return
 
+			case timestamp := <-timeChan:
+				r.timestamp = timestamp
+				cclog.ComponentDebug("MetricRouter", "Update timestamp", r.timestamp.UnixNano())
+
 			case p := <-r.coll_input:
 				coll_forward(p)
 				for i := 0; len(r.coll_input) > 0 && i < (r.maxForward-1); i++ {
@@ -358,14 +383,6 @@ func (r *metricRouter) Close() {
 	// wait for close of channel r.done
 	<-r.done
 
-	// stop timer
-	if r.config.IntervalStamp {
-		cclog.ComponentDebug("MetricRouter", "TIMER CLOSE")
-		r.timerdone <- true
-		// wait for close of channel r.timerdone
-		<-r.timerdone
-	}
-
 	// stop metric cache
 	if r.config.NumCacheIntervals > 0 {
 		cclog.ComponentDebug("MetricRouter", "CACHE CLOSE")

pkg/ccMetric/README.md

@@ -0,0 +1,57 @@
+# ClusterCockpit metrics
+
+As described in the [ClusterCockpit specifications](https://github.com/ClusterCockpit/cc-specifications), the whole ClusterCockpit stack uses metrics in the InfluxDB line protocol format. This is also the input and output format for the ClusterCockpit Metric Collector but internally it uses an extended format while processing, named CCMetric.
+
+It is basically a copy of the [InfluxDB line protocol](https://github.com/influxdata/line-protocol) `MutableMetric` interface with one extension. Besides the tags and fields, it contains a list of meta information (re-using the `Tag` structure of the original protocol):
+
+```golang
+type ccMetric struct {
+    name   string                 // Measurement name
+    meta   map[string]string      // map of meta data tags
+    tags   map[string]string      // map of of tags
+    fields map[string]interface{} // map of of fields
+    tm     time.Time              // timestamp
+}
+
+type CCMetric interface {
+    ToPoint(metaAsTags map[string]bool) *write.Point  // Generate influxDB point for data type ccMetric
+    ToLineProtocol(metaAsTags map[string]bool) string // Generate influxDB line protocol for data type ccMetric
+    String() string                                   // Return line-protocol like string
+
+    Name() string        // Get metric name
+    SetName(name string) // Set metric name
+
+    Time() time.Time     // Get timestamp
+    SetTime(t time.Time) // Set timestamp
+
+    Tags() map[string]string                   // Map of tags
+    AddTag(key, value string)                  // Add a tag
+    GetTag(key string) (value string, ok bool) // Get a tag by its key
+    HasTag(key string) (ok bool)               // Check if a tag key is present
+    RemoveTag(key string)                      // Remove a tag by its key
+
+    Meta() map[string]string                    // Map of meta data tags
+    AddMeta(key, value string)                  // Add a meta data tag
+    GetMeta(key string) (value string, ok bool) // Get a meta data tab addressed by its key
+    HasMeta(key string) (ok bool)               // Check if a meta data key is present
+    RemoveMeta(key string)                      // Remove a meta data tag by its key
+
+    Fields() map[string]interface{}                   // Map of fields
+    AddField(key string, value interface{})           // Add a field
+    GetField(key string) (value interface{}, ok bool) // Get a field addressed by its key
+    HasField(key string) (ok bool)                    // Check if a field key is present
+    RemoveField(key string)                           // Remove a field addressed by its key
+}
+
+func New(name string, tags map[string]string, meta map[string]string, fields map[string]interface{}, tm time.Time) (CCMetric, error)
+func FromMetric(other CCMetric) CCMetric
+func FromInfluxMetric(other lp.Metric) CCMetric
+```
+
+The `CCMetric` interface provides the same functions as the `MutableMetric` like `{Add, Get, Remove, Has}{Tag, Field}` and additionally provides `{Add, Get, Remove, Has}Meta`.
+
+The InfluxDB protocol creates a new metric with `influx.New(name, tags, fields, time)` while CCMetric uses `ccMetric.New(name, tags, meta, fields, time)` where `tags` and `meta` are both of type `map[string]string`.
+
+You can copy a CCMetric with `FromMetric(other CCMetric) CCMetric`. If you get an `influx.Metric` from a function, like the line protocol parser, you can use `FromInfluxMetric(other influx.Metric) CCMetric` to get a CCMetric out of it (see `NatsReceiver` for an example).
+
+Although the [cc-specifications](https://github.com/ClusterCockpit/cc-specifications/blob/master/interfaces/lineprotocol/README.md) defines that there is only a `value` field for the metric value, the CCMetric still can have multiple values similar to the InfluxDB line protocol.

pkg/ccMetric/ccMetric.go

@@ -50,6 +50,7 @@ type CCMetric interface {
 	GetField(key string) (value interface{}, ok bool) // Get a field addressed by its key
 	HasField(key string) (ok bool)                    // Check if a field key is present
 	RemoveField(key string)                           // Remove a field addressed by its key
+	String() string                                   // Return line-protocol like string
 }
 
 // String implements the stringer interface for data type ccMetric
@@ -217,23 +218,26 @@ func New(
 }
 
 // FromMetric copies the metric <other>
-func FromMetric(other ccMetric) CCMetric {
+func FromMetric(other CCMetric) CCMetric {
+	otags := other.Tags()
+	ometa := other.Meta()
+	ofields := other.Fields()
 	m := &ccMetric{
 		name:   other.Name(),
-		tags:   make(map[string]string, len(other.tags)),
+		tags:   make(map[string]string, len(otags)),
-		meta:   make(map[string]string, len(other.meta)),
+		meta:   make(map[string]string, len(ometa)),
-		fields: make(map[string]interface{}, len(other.fields)),
+		fields: make(map[string]interface{}, len(ofields)),
 		tm:     other.Time(),
 	}
 
 	// deep copy tags, meta data tags and fields
-	for key, value := range other.tags {
+	for key, value := range otags {
 		m.tags[key] = value
 	}
-	for key, value := range other.meta {
+	for key, value := range ometa {
 		m.meta[key] = value
 	}
-	for key, value := range other.fields {
+	for key, value := range ofields {
 		m.fields[key] = value
 	}
 	return m

pkg/ccTopology/ccTopology.go

@@ -10,7 +10,7 @@ import (
 	"strconv"
 	"strings"
 
-	cclogger "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclogger "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
 )
 
 const SYSFS_NUMABASE = `/sys/devices/system/node`
@@ -29,6 +29,7 @@ func intArrayContains(array []int, str int) (int, bool) {
 	return -1, false
 }
 
+// Used internally for sysfs file reads
 func fileToInt(path string) int {
 	buffer, err := ioutil.ReadFile(path)
 	if err != nil {
@@ -47,6 +48,7 @@ func fileToInt(path string) int {
 	return int(id)
 }
 
+// Get list of CPU socket IDs
 func SocketList() []int {
 	buffer, err := ioutil.ReadFile(string(PROCFS_CPUINFO))
 	if err != nil {
@@ -54,7 +56,7 @@ func SocketList() []int {
 		return nil
 	}
 	ll := strings.Split(string(buffer), "\n")
-	var packs []int
+	packs := make([]int, 0)
 	for _, line := range ll {
 		if strings.HasPrefix(line, "physical id") {
 			lv := strings.Fields(line)
@@ -72,7 +74,8 @@ func SocketList() []int {
 	return packs
 }
 
-func CpuList() []int {
+// Get list of hardware thread IDs in the order of listing in /proc/cpuinfo
+func HwthreadList() []int {
 	buffer, err := ioutil.ReadFile(string(PROCFS_CPUINFO))
 	if err != nil {
 		log.Print(err)
@@ -97,6 +100,13 @@ func CpuList() []int {
 	return cpulist
 }
 
+// Get list of hardware thread IDs in the order of listing in /proc/cpuinfo
+// Deprecated! Use HwthreadList()
+func CpuList() []int {
+	return HwthreadList()
+}
+
+// Get list of CPU core IDs in the order of listing in /proc/cpuinfo
 func CoreList() []int {
 	buffer, err := ioutil.ReadFile(string(PROCFS_CPUINFO))
 	if err != nil {
@@ -122,6 +132,7 @@ func CoreList() []int {
 	return corelist
 }
 
+// Get list of NUMA node IDs
 func NumaNodeList() []int {
 	numaList := make([]int, 0)
 	globPath := filepath.Join(string(SYSFS_NUMABASE), "node*")
@@ -156,8 +167,9 @@ func NumaNodeList() []int {
 	return numaList
 }
 
+// Get list of CPU die IDs
 func DieList() []int {
-	cpulist := CpuList()
+	cpulist := HwthreadList()
 	dielist := make([]int, 0)
 	for _, c := range cpulist {
 		diepath := filepath.Join(string(SYSFS_CPUBASE), fmt.Sprintf("cpu%d", c), "topology/die_id")
@@ -169,10 +181,33 @@ func DieList() []int {
 			}
 		}
 	}
+	if len(dielist) > 0 {
 		return dielist
+	}
+	return SocketList()
 }
 
-type CpuEntry struct {
+// Get list of specified type using the naming format inside ClusterCockpit
+func GetTypeList(topology_type string) []int {
+	switch topology_type {
+	case "node":
+		return []int{0}
+	case "socket":
+		return SocketList()
+	case "die":
+		return DieList()
+	case "memoryDomain":
+		return NumaNodeList()
+	case "core":
+		return CoreList()
+	case "hwthread":
+		return HwthreadList()
+	}
+	return []int{}
+}
+
+// Structure holding all information about a hardware thread
+type HwthreadEntry struct {
 	Cpuid      int
 	SMT        int
 	Core       int
@@ -181,25 +216,25 @@ type CpuEntry struct {
 	Die        int
 }
 
-func CpuData() []CpuEntry {
+func CpuData() []HwthreadEntry {
 
-	fileToInt := func(path string) int {
+	// fileToInt := func(path string) int {
-		buffer, err := ioutil.ReadFile(path)
+	// 	buffer, err := ioutil.ReadFile(path)
-		if err != nil {
+	// 	if err != nil {
-			log.Print(err)
+	// 		log.Print(err)
-			//cclogger.ComponentError("ccTopology", "Reading", path, ":", err.Error())
+	// 		//cclogger.ComponentError("ccTopology", "Reading", path, ":", err.Error())
-			return -1
+	// 		return -1
-		}
+	// 	}
-		sbuffer := strings.Replace(string(buffer), "\n", "", -1)
+	// 	sbuffer := strings.Replace(string(buffer), "\n", "", -1)
-		var id int64
+	// 	var id int64
-		//_, err = fmt.Scanf("%d", sbuffer, &id)
+	// 	//_, err = fmt.Scanf("%d", sbuffer, &id)
-		id, err = strconv.ParseInt(sbuffer, 10, 32)
+	// 	id, err = strconv.ParseInt(sbuffer, 10, 32)
-		if err != nil {
+	// 	if err != nil {
-			cclogger.ComponentError("ccTopology", "Parsing", path, ":", sbuffer, err.Error())
+	// 		cclogger.ComponentError("ccTopology", "Parsing", path, ":", sbuffer, err.Error())
-			return -1
+	// 		return -1
-		}
+	// 	}
-		return int(id)
+	// 	return int(id)
-	}
+	// }
 	getCore := func(basepath string) int {
 		return fileToInt(fmt.Sprintf("%s/core_id", basepath))
 	}
@@ -257,11 +292,11 @@ func CpuData() []CpuEntry {
 		return 0
 	}
 
-	clist := make([]CpuEntry, 0)
+	clist := make([]HwthreadEntry, 0)
-	for _, c := range CpuList() {
+	for _, c := range HwthreadList() {
-		clist = append(clist, CpuEntry{Cpuid: c})
+		clist = append(clist, HwthreadEntry{Cpuid: c})
 	}
-	for _, centry := range clist {
+	for i, centry := range clist {
 		centry.Socket = -1
 		centry.Numadomain = -1
 		centry.Die = -1
@@ -289,10 +324,13 @@ func CpuData() []CpuEntry {
 		// Lookup NUMA domain id
 		centry.Numadomain = getNumaDomain(base)
 
+		// Update values in output list
+		clist[i] = centry
 	}
 	return clist
 }
 
+// Structure holding basic information about a CPU
 type CpuInformation struct {
 	NumHWthreads   int
 	SMTWidth       int
@@ -302,6 +340,7 @@ type CpuInformation struct {
 	NumNumaDomains int
 }
 
+// Get basic information about the CPU
 func CpuInfo() CpuInformation {
 	var c CpuInformation
 
@@ -337,7 +376,8 @@ func CpuInfo() CpuInformation {
 	return c
 }
 
-func GetCpuSocket(cpuid int) int {
+// Get the CPU socket ID for a given hardware thread ID
+func GetHwthreadSocket(cpuid int) int {
 	cdata := CpuData()
 	for _, d := range cdata {
 		if d.Cpuid == cpuid {
@@ -347,7 +387,8 @@ func GetCpuSocket(cpuid int) int {
 	return -1
 }
 
-func GetCpuNumaDomain(cpuid int) int {
+// Get the NUMA node ID for a given hardware thread ID
+func GetHwthreadNumaDomain(cpuid int) int {
 	cdata := CpuData()
 	for _, d := range cdata {
 		if d.Cpuid == cpuid {
@@ -357,7 +398,8 @@ func GetCpuNumaDomain(cpuid int) int {
 	return -1
 }
 
-func GetCpuDie(cpuid int) int {
+// Get the CPU die ID for a given hardware thread ID
+func GetHwthreadDie(cpuid int) int {
 	cdata := CpuData()
 	for _, d := range cdata {
 		if d.Cpuid == cpuid {
@@ -367,7 +409,8 @@ func GetCpuDie(cpuid int) int {
 	return -1
 }
 
-func GetCpuCore(cpuid int) int {
+// Get the CPU core ID for a given hardware thread ID
+func GetHwthreadCore(cpuid int) int {
 	cdata := CpuData()
 	for _, d := range cdata {
 		if d.Cpuid == cpuid {
@@ -377,7 +420,8 @@ func GetCpuCore(cpuid int) int {
 	return -1
 }
 
-func GetSocketCpus(socket int) []int {
+// Get the all hardware thread ID associated with a CPU socket
+func GetSocketHwthreads(socket int) []int {
 	all := CpuData()
 	cpulist := make([]int, 0)
 	for _, d := range all {
@@ -388,7 +432,8 @@ func GetSocketCpus(socket int) []int {
 	return cpulist
 }
 
-func GetNumaDomainCpus(domain int) []int {
+// Get the all hardware thread ID associated with a NUMA node
+func GetNumaDomainHwthreads(domain int) []int {
 	all := CpuData()
 	cpulist := make([]int, 0)
 	for _, d := range all {
@@ -399,7 +444,8 @@ func GetNumaDomainCpus(domain int) []int {
 	return cpulist
 }
 
-func GetDieCpus(die int) []int {
+// Get the all hardware thread ID associated with a CPU die
+func GetDieHwthreads(die int) []int {
 	all := CpuData()
 	cpulist := make([]int, 0)
 	for _, d := range all {
@@ -410,7 +456,8 @@ func GetDieCpus(die int) []int {
 	return cpulist
 }
 
-func GetCoreCpus(core int) []int {
+// Get the all hardware thread ID associated with a CPU core
+func GetCoreHwthreads(core int) []int {
 	all := CpuData()
 	cpulist := make([]int, 0)
 	for _, d := range all {

pkg/multiChanTicker/multiChanTicker.go

@@ -3,7 +3,7 @@ package multiChanTicker
 import (
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
 )
 
 type multiChanTicker struct {

receivers.json

@@ -4,5 +4,22 @@
         "address": "nats://my-url",
         "port" : "4222",
         "database": "testcluster"
+    },
+    "redfish_recv": {
+        "type": "redfish",
+        "client_config": [
+            {
+                "hostname": "my-host-1",
+                "username": "username-1",
+                "password": "password-1",
+                "endpoint": "https://my-endpoint-1"
+            },
+            {
+                "hostname": "my-host-2",
+                "username": "username-2",
+                "password": "password-2",
+                "endpoint": "https://my-endpoint-2"
+            }
+        ]
     }
 }

receivers/httpReceiver.go

@@ -5,13 +5,13 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"strings"
 	"sync"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	"github.com/gorilla/mux"
 	influx "github.com/influxdata/line-protocol"
 )
@@ -84,7 +84,7 @@ func (r *HttpReceiver) ServerHttp(w http.ResponseWriter, req *http.Request) {
 		return
 	}
 
-	body, err := ioutil.ReadAll(req.Body)
+	body, err := io.ReadAll(req.Body)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return

receivers/metricReceiver.go

@@ -1,7 +1,7 @@
 package receivers
 
 import (
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 type defaultReceiverConfig struct {

receivers/natsReceiver.go

@@ -6,8 +6,8 @@ import (
 	"fmt"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	influx "github.com/influxdata/line-protocol"
 	nats "github.com/nats-io/nats.go"
 )

receivers/prometheusReceiver.go

@@ -12,8 +12,8 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 type PrometheusReceiverConfig struct {

receivers/receiveManager.go

@@ -5,19 +5,18 @@ import (
 	"os"
 	"sync"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 var AvailableReceivers = map[string]func(name string, config json.RawMessage) (Receiver, error){
 	"nats":    NewNatsReceiver,
+	"redfish": NewRedfishReceiver,
 }
 
 type receiveManager struct {
 	inputs []Receiver
 	output chan lp.CCMetric
-	done   chan bool
-	wg     *sync.WaitGroup
 	config []json.RawMessage
 }
 
@@ -33,8 +32,6 @@ func (rm *receiveManager) Init(wg *sync.WaitGroup, receiverConfigFile string) er
 	// Initialize struct fields
 	rm.inputs = make([]Receiver, 0)
 	rm.output = nil
-	rm.done = make(chan bool)
-	rm.wg = wg
 	rm.config = make([]json.RawMessage, 0)
 
 	configFile, err := os.Open(receiverConfigFile)
@@ -58,7 +55,7 @@ func (rm *receiveManager) Init(wg *sync.WaitGroup, receiverConfigFile string) er
 }
 
 func (rm *receiveManager) Start() {
-	rm.wg.Add(1)
+	cclog.ComponentDebug("ReceiveManager", "START")
 
 	for _, r := range rm.inputs {
 		cclog.ComponentDebug("ReceiveManager", "START", r.Name())
@@ -97,16 +94,19 @@ func (rm *receiveManager) AddOutput(output chan lp.CCMetric) {
 }
 
 func (rm *receiveManager) Close() {
+	cclog.ComponentDebug("ReceiveManager", "CLOSE")
+
+	// Close all receivers
 	for _, r := range rm.inputs {
 		cclog.ComponentDebug("ReceiveManager", "CLOSE", r.Name())
 		r.Close()
 	}
-	rm.wg.Done()
+
-	cclog.ComponentDebug("ReceiveManager", "CLOSE")
+	cclog.ComponentDebug("ReceiveManager", "DONE")
 }
 
 func New(wg *sync.WaitGroup, receiverConfigFile string) (ReceiveManager, error) {
-	r := &receiveManager{}
+	r := new(receiveManager)
 	err := r.Init(wg, receiverConfigFile)
 	if err != nil {
 		return nil, err

receivers/redfishReceiver.go

@@ -0,0 +1,822 @@
+package receivers
+
+import (
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
+
+	// See: https://pkg.go.dev/github.com/stmcginnis/gofish
+	"github.com/stmcginnis/gofish"
+	"github.com/stmcginnis/gofish/common"
+	"github.com/stmcginnis/gofish/redfish"
+)
+
+type RedfishReceiverClientConfig struct {
+
+	// Hostname the redfish service belongs to
+	Hostname string
+
+	// is metric excluded globally or per client
+	isExcluded map[string](bool)
+
+	doPowerMetric      bool
+	doProcessorMetrics bool
+	doThermalMetrics   bool
+
+	skipProcessorMetricsURL map[string]bool
+
+	gofish gofish.ClientConfig
+}
+
+// RedfishReceiver configuration:
+type RedfishReceiver struct {
+	receiver
+
+	config struct {
+		fanout      int
+		Interval    time.Duration
+		HttpTimeout time.Duration
+
+		// Client config for each redfish service
+		ClientConfigs []RedfishReceiverClientConfig
+	}
+
+	done chan bool      // channel to finish / stop redfish receiver
+	wg   sync.WaitGroup // wait group for redfish receiver
+}
+
+// readThermalMetrics reads thermal metrics from a redfish device
+func (r *RedfishReceiver) readThermalMetrics(
+	clientConfig *RedfishReceiverClientConfig,
+	chassis *redfish.Chassis) error {
+
+	// Get thermal information for each chassis
+	thermal, err := chassis.Thermal()
+	if err != nil {
+		return fmt.Errorf("readMetrics: chassis.Thermal() failed: %v", err)
+	}
+
+	// Skip empty thermal information
+	if thermal == nil {
+		return nil
+	}
+
+	timestamp := time.Now()
+
+	for _, temperature := range thermal.Temperatures {
+
+		// Skip, when temperature metric is excluded
+		if clientConfig.isExcluded["temperature"] {
+			break
+		}
+
+		// Skip all temperatures which are not in enabled state
+		if temperature.Status.State != "" && temperature.Status.State != common.EnabledState {
+			continue
+		}
+
+		tags := map[string]string{
+			"hostname": clientConfig.Hostname,
+			"type":     "node",
+			// ChassisType shall indicate the physical form factor for the type of chassis
+			"chassis_typ": string(chassis.ChassisType),
+			// Chassis name
+			"chassis_name": chassis.Name,
+			// ID uniquely identifies the resource
+			"temperature_id": temperature.ID,
+			// MemberID shall uniquely identify the member within the collection. For
+			// services supporting Redfish v1.6 or higher, this value shall be the
+			// zero-based array index.
+			"temperature_member_id": temperature.MemberID,
+			// PhysicalContext shall be a description of the affected device or region
+			// within the chassis to which this temperature measurement applies
+			"temperature_physical_context": string(temperature.PhysicalContext),
+			// Name
+			"temperature_name": temperature.Name,
+		}
+
+		// Delete empty tags
+		for key, value := range tags {
+			if value == "" {
+				delete(tags, key)
+			}
+		}
+
+		// Set meta data tags
+		meta := map[string]string{
+			"source": r.name,
+			"group":  "Temperature",
+			"unit":   "degC",
+		}
+
+		// ReadingCelsius shall be the current value of the temperature sensor's reading.
+		value := temperature.ReadingCelsius
+
+		y, err := lp.New("temperature", tags, meta,
+			map[string]interface{}{
+				"value": value,
+			},
+			timestamp)
+		if err == nil {
+			r.sink <- y
+		}
+	}
+
+	for _, fan := range thermal.Fans {
+		// Skip, when fan_speed metric is excluded
+		if clientConfig.isExcluded["fan_speed"] {
+			break
+		}
+
+		// Skip all fans which are not in enabled state
+		if fan.Status.State != common.EnabledState {
+			continue
+		}
+
+		tags := map[string]string{
+			"hostname": clientConfig.Hostname,
+			"type":     "node",
+			// ChassisType shall indicate the physical form factor for the type of chassis
+			"chassis_typ": string(chassis.ChassisType),
+			// Chassis name
+			"chassis_name": chassis.Name,
+			// ID uniquely identifies the resource
+			"fan_id": fan.ID,
+			// MemberID shall uniquely identify the member within the collection. For
+			// services supporting Redfish v1.6 or higher, this value shall be the
+			// zero-based array index.
+			"fan_member_id": fan.MemberID,
+			// PhysicalContext shall be a description of the affected device or region
+			// within the chassis to which this fan is associated
+			"fan_physical_context": string(fan.PhysicalContext),
+			// Name
+			"fan_name": fan.Name,
+		}
+
+		// Delete empty tags
+		for key, value := range tags {
+			if value == "" {
+				delete(tags, key)
+			}
+		}
+
+		// Set meta data tags
+		meta := map[string]string{
+			"source": r.name,
+			"group":  "FanSpeed",
+			"unit":   string(fan.ReadingUnits),
+		}
+
+		// Reading shall be the current value of the fan sensor's reading
+		value := fan.Reading
+
+		y, err := lp.New("fan_speed", tags, meta,
+			map[string]interface{}{
+				"value": value,
+			},
+			timestamp)
+		if err == nil {
+			r.sink <- y
+		}
+	}
+
+	return nil
+}
+
+// readPowerMetrics reads power metrics from a redfish device
+func (r *RedfishReceiver) readPowerMetrics(
+	clientConfig *RedfishReceiverClientConfig,
+	chassis *redfish.Chassis) error {
+
+	// Get power information for each chassis
+	power, err := chassis.Power()
+	if err != nil {
+		return fmt.Errorf("readMetrics: chassis.Power() failed: %v", err)
+	}
+
+	// Skip empty power information
+	if power == nil {
+		return nil
+	}
+
+	timestamp := time.Now()
+
+	// Read min, max and average consumed watts for each power control
+	for _, pc := range power.PowerControl {
+
+		// Skip all power controls which are not in enabled state
+		if pc.Status.State != "" && pc.Status.State != common.EnabledState {
+			continue
+		}
+
+		// Map of collected metrics
+		metrics := make(map[string]float32)
+
+		// PowerConsumedWatts shall represent the actual power being consumed (in
+		// Watts) by the chassis
+		if !clientConfig.isExcluded["consumed_watts"] {
+			metrics["consumed_watts"] = pc.PowerConsumedWatts
+		}
+		// AverageConsumedWatts shall represent the
+		// average power level that occurred averaged over the last IntervalInMin
+		// minutes.
+		if !clientConfig.isExcluded["average_consumed_watts"] {
+			metrics["average_consumed_watts"] = pc.PowerMetrics.AverageConsumedWatts
+		}
+		// MinConsumedWatts shall represent the
+		// minimum power level in watts that occurred within the last
+		// IntervalInMin minutes.
+		if !clientConfig.isExcluded["min_consumed_watts"] {
+			metrics["min_consumed_watts"] = pc.PowerMetrics.MinConsumedWatts
+		}
+		// MaxConsumedWatts shall represent the
+		// maximum power level in watts that occurred within the last
+		// IntervalInMin minutes
+		if !clientConfig.isExcluded["max_consumed_watts"] {
+			metrics["max_consumed_watts"] = pc.PowerMetrics.MaxConsumedWatts
+		}
+		// IntervalInMin shall represent the time interval (or window), in minutes,
+		// in which the PowerMetrics properties are measured over.
+		// Should be an integer, but some Dell implementations return as a float
+		intervalInMin :=
+			strconv.FormatFloat(
+				float64(pc.PowerMetrics.IntervalInMin), 'f', -1, 32)
+
+		// Set tags
+		tags := map[string]string{
+			"hostname": clientConfig.Hostname,
+			"type":     "node",
+			// ChassisType shall indicate the physical form factor for the type of chassis
+			"chassis_typ": string(chassis.ChassisType),
+			// Chassis name
+			"chassis_name": chassis.Name,
+			// ID uniquely identifies the resource
+			"power_control_id": pc.ID,
+			// MemberID shall uniquely identify the member within the collection. For
+			// services supporting Redfish v1.6 or higher, this value shall be the
+			// zero-based array index.
+			"power_control_member_id": pc.MemberID,
+			// PhysicalContext shall be a description of the affected device(s) or region
+			// within the chassis to which this power control applies.
+			"power_control_physical_context": string(pc.PhysicalContext),
+			// Name
+			"power_control_name": pc.Name,
+		}
+
+		// Delete empty tags
+		for key, value := range tags {
+			if value == "" {
+				delete(tags, key)
+			}
+		}
+
+		// Set meta data tags
+		meta := map[string]string{
+			"source":              r.name,
+			"group":               "Energy",
+			"interval_in_minutes": intervalInMin,
+			"unit":                "watts",
+		}
+
+		// Delete empty meta data tags
+		for key, value := range meta {
+			if value == "" {
+				delete(meta, key)
+			}
+		}
+
+		for name, value := range metrics {
+
+			y, err := lp.New(name, tags, meta,
+				map[string]interface{}{
+					"value": value,
+				},
+				timestamp)
+			if err == nil {
+				r.sink <- y
+			}
+		}
+	}
+
+	return nil
+}
+
+// readProcessorMetrics reads processor metrics from a redfish device
+// See: https://redfish.dmtf.org/schemas/v1/ProcessorMetrics.json
+func (r *RedfishReceiver) readProcessorMetrics(
+	clientConfig *RedfishReceiverClientConfig,
+	processor *redfish.Processor) error {
+
+	timestamp := time.Now()
+
+	// URL to processor metrics
+	URL := processor.ODataID + "/ProcessorMetrics"
+
+	// Skip previously detected non existing URLs
+	if clientConfig.skipProcessorMetricsURL[URL] {
+		return nil
+	}
+
+	resp, err := processor.Client.Get(URL)
+	if err != nil {
+		// Skip non existing URLs
+		if statusCode := err.(*common.Error).HTTPReturnedStatusCode; statusCode == http.StatusNotFound {
+			clientConfig.skipProcessorMetricsURL[URL] = true
+			return nil
+		}
+
+		return fmt.Errorf("processor.Client.Get(%v) failed: %+w", URL, err)
+	}
+
+	var processorMetrics struct {
+		common.Entity
+		ODataType   string `json:"@odata.type"`
+		ODataEtag   string `json:"@odata.etag"`
+		Description string `json:"Description"`
+		// This property shall contain the power, in watts, that the processor has consumed.
+		ConsumedPowerWatt float32 `json:"ConsumedPowerWatt"`
+		// This property shall contain the temperature, in Celsius, of the processor.
+		TemperatureCelsius float32 `json:"TemperatureCelsius"`
+	}
+	err = json.NewDecoder(resp.Body).Decode(&processorMetrics)
+	if err != nil {
+		return fmt.Errorf("unable to decode JSON for processor metrics: %+w", err)
+	}
+	processorMetrics.SetClient(processor.Client)
+
+	// Set tags
+	tags := map[string]string{
+		"hostname": clientConfig.Hostname,
+		"type":     "socket",
+		// ProcessorType shall contain the string which identifies the type of processor contained in this Socket
+		"processor_typ": string(processor.ProcessorType),
+		// Processor name
+		"processor_name": processor.Name,
+		// ID uniquely identifies the resource
+		"processor_id": processor.ID,
+	}
+
+	// Delete empty tags
+	for key, value := range tags {
+		if value == "" {
+			delete(tags, key)
+		}
+	}
+
+	// Set meta data tags
+	metaPower := map[string]string{
+		"source": r.name,
+		"group":  "Energy",
+		"unit":   "watts",
+	}
+
+	namePower := "consumed_power"
+
+	if !clientConfig.isExcluded[namePower] {
+		y, err := lp.New(namePower, tags, metaPower,
+			map[string]interface{}{
+				"value": processorMetrics.ConsumedPowerWatt,
+			},
+			timestamp)
+		if err == nil {
+			r.sink <- y
+		}
+	}
+	// Set meta data tags
+	metaThermal := map[string]string{
+		"source": r.name,
+		"group":  "Temperature",
+		"unit":   "degC",
+	}
+
+	nameThermal := "temperature"
+
+	if !clientConfig.isExcluded[nameThermal] {
+		y, err := lp.New(nameThermal, tags, metaThermal,
+			map[string]interface{}{
+				"value": processorMetrics.TemperatureCelsius,
+			},
+			timestamp)
+		if err == nil {
+			r.sink <- y
+		}
+	}
+	return nil
+}
+
+// readMetrics reads redfish thermal, power and processor metrics from the redfish device
+// configured in clientConfig
+func (r *RedfishReceiver) readMetrics(clientConfig *RedfishReceiverClientConfig) error {
+
+	// Connect to redfish service
+	c, err := gofish.Connect(clientConfig.gofish)
+	if err != nil {
+		return fmt.Errorf(
+			"readMetrics: gofish.Connect({Username: %v, Endpoint: %v, BasicAuth: %v, HttpTimeout: %v, HttpInsecure: %v}) failed: %v",
+			clientConfig.gofish.Username,
+			clientConfig.gofish.Endpoint,
+			clientConfig.gofish.BasicAuth,
+			clientConfig.gofish.HTTPClient.Timeout,
+			clientConfig.gofish.HTTPClient.Transport.(*http.Transport).TLSClientConfig.InsecureSkipVerify,
+			err)
+	}
+	defer c.Logout()
+
+	// Create a session, when required
+	if _, err = c.GetSession(); err != nil {
+		c, err = c.CloneWithSession()
+		if err != nil {
+			return fmt.Errorf("readMetrics: Failed to create a session: %+w", err)
+		}
+	}
+
+	// Get all chassis managed by this service
+	isChassisListRequired :=
+		clientConfig.doThermalMetrics ||
+			clientConfig.doPowerMetric
+	var chassisList []*redfish.Chassis
+	if isChassisListRequired {
+		chassisList, err = c.Service.Chassis()
+		if err != nil {
+			return fmt.Errorf("readMetrics: c.Service.Chassis() failed: %v", err)
+		}
+	}
+
+	// Get all computer systems managed by this service
+	isComputerSystemListRequired := clientConfig.doProcessorMetrics
+	var computerSystemList []*redfish.ComputerSystem
+	if isComputerSystemListRequired {
+		computerSystemList, err = c.Service.Systems()
+		if err != nil {
+			return fmt.Errorf("readMetrics: c.Service.Systems() failed: %v", err)
+		}
+	}
+
+	// read thermal metrics
+	if clientConfig.doThermalMetrics {
+		for _, chassis := range chassisList {
+			err := r.readThermalMetrics(clientConfig, chassis)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	// read power metrics
+	if clientConfig.doPowerMetric {
+		for _, chassis := range chassisList {
+			err = r.readPowerMetrics(clientConfig, chassis)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	// read processor metrics
+	if clientConfig.doProcessorMetrics {
+		// loop for all computer systems
+		for _, system := range computerSystemList {
+
+			// loop for all processors
+			processors, err := system.Processors()
+			if err != nil {
+				return fmt.Errorf("readMetrics: system.Processors() failed: %v", err)
+			}
+			for _, processor := range processors {
+				err := r.readProcessorMetrics(clientConfig, processor)
+				if err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+// doReadMetrics reads metrics from all configure redfish devices.
+// To compensate latencies of the Redfish devices a fanout is used.
+func (r *RedfishReceiver) doReadMetric() {
+
+	// Create wait group and input channel for workers
+	var workerWaitGroup sync.WaitGroup
+	workerInput := make(chan *RedfishReceiverClientConfig, r.config.fanout)
+
+	// Create worker go routines
+	for i := 0; i < r.config.fanout; i++ {
+		// Increment worker wait group counter
+		workerWaitGroup.Add(1)
+		go func() {
+			// Decrement worker wait group counter
+			defer workerWaitGroup.Done()
+
+			// Read power metrics for each client config
+			for clientConfig := range workerInput {
+				err := r.readMetrics(clientConfig)
+				if err != nil {
+					cclog.ComponentError(r.name, err)
+				}
+			}
+		}()
+	}
+
+	// Distribute client configs to workers
+	for i := range r.config.ClientConfigs {
+
+		// Check done channel status
+		select {
+		case workerInput <- &r.config.ClientConfigs[i]:
+		case <-r.done:
+			// process done event
+			// Stop workers, clear channel and wait for all workers to finish
+			close(workerInput)
+			for range workerInput {
+			}
+			workerWaitGroup.Wait()
+			return
+		}
+	}
+
+	// Stop workers and wait for all workers to finish
+	close(workerInput)
+	workerWaitGroup.Wait()
+}
+
+// Start starts the redfish receiver
+func (r *RedfishReceiver) Start() {
+	cclog.ComponentDebug(r.name, "START")
+
+	// Start redfish receiver
+	r.wg.Add(1)
+	go func() {
+		defer r.wg.Done()
+
+		// Create ticker
+		ticker := time.NewTicker(r.config.Interval)
+		defer ticker.Stop()
+
+		for {
+			r.doReadMetric()
+
+			select {
+			case tickerTime := <-ticker.C:
+				// Check if we missed the ticker event
+				if since := time.Since(tickerTime); since > 5*time.Second {
+					cclog.ComponentInfo(r.name, "Missed ticker event for more then", since)
+				}
+
+				// process ticker event -> continue
+				continue
+			case <-r.done:
+				// process done event
+				return
+			}
+		}
+	}()
+
+	cclog.ComponentDebug(r.name, "STARTED")
+}
+
+// Close closes the redfish receiver
+func (r *RedfishReceiver) Close() {
+	cclog.ComponentDebug(r.name, "CLOSE")
+
+	// Send the signal and wait
+	close(r.done)
+	r.wg.Wait()
+
+	cclog.ComponentDebug(r.name, "DONE")
+}
+
+// NewRedfishReceiver creates a new instance of the redfish receiver
+// Initialize the receiver by giving it a name and reading in the config JSON
+func NewRedfishReceiver(name string, config json.RawMessage) (Receiver, error) {
+	r := new(RedfishReceiver)
+
+	// Config options from config file
+	configJSON := struct {
+		Type string `json:"type"`
+
+		// Maximum number of simultaneous redfish connections (default: 64)
+		Fanout int `json:"fanout,omitempty"`
+		// How often the redfish power metrics should be read and send to the sink (default: 30 s)
+		IntervalString string `json:"interval,omitempty"`
+
+		// Control whether a client verifies the server's certificate
+		// (default: true == do not verify server's certificate)
+		HttpInsecure bool `json:"http_insecure,omitempty"`
+		// Time limit for requests made by this HTTP client (default: 10 s)
+		HttpTimeoutString string `json:"http_timeout,omitempty"`
+
+		// Default client username, password and endpoint
+		Username *string `json:"username"` // User name to authenticate with
+		Password *string `json:"password"` // Password to use for authentication
+		Endpoint *string `json:"endpoint"` // URL of the redfish service
+
+		// Globally disable collection of power, processor or thermal metrics
+		DisablePowerMetrics     bool `json:"disable_power_metrics"`
+		DisableProcessorMetrics bool `json:"disable_processor_metrics"`
+		DisableThermalMetrics   bool `json:"disable_thermal_metrics"`
+
+		// Globally excluded metrics
+		ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
+
+		ClientConfigs []struct {
+			HostList []string `json:"host_list"` // List of hosts with the same client configuration
+			Username *string  `json:"username"`  // User name to authenticate with
+			Password *string  `json:"password"`  // Password to use for authentication
+			Endpoint *string  `json:"endpoint"`  // URL of the redfish service
+
+			// Per client disable collection of power,processor or thermal metrics
+			DisablePowerMetrics     bool `json:"disable_power_metrics"`
+			DisableProcessorMetrics bool `json:"disable_processor_metrics"`
+			DisableThermalMetrics   bool `json:"disable_thermal_metrics"`
+
+			// Per client excluded metrics
+			ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
+		} `json:"client_config"`
+	}{
+		// Set defaults values
+		// Allow overwriting these defaults by reading config JSON
+		Fanout:            64,
+		IntervalString:    "30s",
+		HttpTimeoutString: "10s",
+		HttpInsecure:      true,
+	}
+
+	// Set name
+	r.name = fmt.Sprintf("RedfishReceiver(%s)", name)
+
+	// Create done channel
+	r.done = make(chan bool)
+
+	// Read the redfish receiver specific JSON config
+	if len(config) > 0 {
+		err := json.Unmarshal(config, &configJSON)
+		if err != nil {
+			cclog.ComponentError(r.name, "Error reading config:", err.Error())
+			return nil, err
+		}
+	}
+
+	// Convert interval string representation to duration
+	var err error
+	r.config.Interval, err = time.ParseDuration(configJSON.IntervalString)
+	if err != nil {
+		err := fmt.Errorf(
+			"Failed to parse duration string interval='%s': %w",
+			configJSON.IntervalString,
+			err,
+		)
+		cclog.Error(r.name, err)
+		return nil, err
+	}
+
+	// HTTP timeout duration
+	r.config.HttpTimeout, err = time.ParseDuration(configJSON.HttpTimeoutString)
+	if err != nil {
+		err := fmt.Errorf(
+			"Failed to parse duration string http_timeout='%s': %w",
+			configJSON.HttpTimeoutString,
+			err,
+		)
+		cclog.Error(r.name, err)
+		return nil, err
+	}
+
+	// Create new http client
+	customTransport := http.DefaultTransport.(*http.Transport).Clone()
+	customTransport.TLSClientConfig = &tls.Config{
+		InsecureSkipVerify: configJSON.HttpInsecure,
+	}
+	httpClient := &http.Client{
+		Timeout:   r.config.HttpTimeout,
+		Transport: customTransport,
+	}
+
+	// Initialize client configurations
+	r.config.ClientConfigs = make([]RedfishReceiverClientConfig, 0)
+
+	// Create client config from JSON config
+	for i := range configJSON.ClientConfigs {
+
+		clientConfigJSON := &configJSON.ClientConfigs[i]
+
+		var endpoint_pattern string
+		if clientConfigJSON.Endpoint != nil {
+			endpoint_pattern = *clientConfigJSON.Endpoint
+		} else if configJSON.Endpoint != nil {
+			endpoint_pattern = *configJSON.Endpoint
+		} else {
+			err := fmt.Errorf("client config number %v requires endpoint", i)
+			cclog.ComponentError(r.name, err)
+			return nil, err
+		}
+
+		var username string
+		if clientConfigJSON.Username != nil {
+			username = *clientConfigJSON.Username
+		} else if configJSON.Username != nil {
+			username = *configJSON.Username
+		} else {
+			err := fmt.Errorf("client config number %v requires username", i)
+			cclog.ComponentError(r.name, err)
+			return nil, err
+		}
+
+		var password string
+		if clientConfigJSON.Password != nil {
+			password = *clientConfigJSON.Password
+		} else if configJSON.Password != nil {
+			password = *configJSON.Password
+		} else {
+			err := fmt.Errorf("client config number %v requires password", i)
+			cclog.ComponentError(r.name, err)
+			return nil, err
+		}
+
+		// Which metrics should be collected
+		doPowerMetric :=
+			!(configJSON.DisablePowerMetrics ||
+				clientConfigJSON.DisablePowerMetrics)
+		doProcessorMetrics :=
+			!(configJSON.DisableProcessorMetrics ||
+				clientConfigJSON.DisableProcessorMetrics)
+		doThermalMetrics :=
+			!(configJSON.DisableThermalMetrics ||
+				clientConfigJSON.DisableThermalMetrics)
+
+		// Is metrics excluded globally or per client
+		isExcluded := make(map[string]bool)
+		for _, key := range clientConfigJSON.ExcludeMetrics {
+			isExcluded[key] = true
+		}
+		for _, key := range configJSON.ExcludeMetrics {
+			isExcluded[key] = true
+		}
+
+		for _, host := range clientConfigJSON.HostList {
+
+			// Endpoint of the redfish service
+			endpoint := strings.Replace(endpoint_pattern, "%h", host, -1)
+
+			r.config.ClientConfigs = append(
+				r.config.ClientConfigs,
+				RedfishReceiverClientConfig{
+					Hostname:                host,
+					isExcluded:              isExcluded,
+					doPowerMetric:           doPowerMetric,
+					doProcessorMetrics:      doProcessorMetrics,
+					doThermalMetrics:        doThermalMetrics,
+					skipProcessorMetricsURL: make(map[string]bool),
+					gofish: gofish.ClientConfig{
+						Username:   username,
+						Password:   password,
+						Endpoint:   endpoint,
+						HTTPClient: httpClient,
+					},
+				})
+		}
+
+	}
+
+	// Compute parallel fanout to use
+	numClients := len(r.config.ClientConfigs)
+	r.config.fanout = configJSON.Fanout
+	if numClients < r.config.fanout {
+		r.config.fanout = numClients
+	}
+
+	if numClients == 0 {
+		err := fmt.Errorf("at least one client config is required")
+		cclog.ComponentError(r.name, err)
+		return nil, err
+	}
+
+	// Check for duplicate client configurations
+	isDuplicate := make(map[string]bool)
+	for i := range r.config.ClientConfigs {
+		host := r.config.ClientConfigs[i].Hostname
+		if isDuplicate[host] {
+			err := fmt.Errorf("Found duplicate client config for host %s", host)
+			cclog.ComponentError(r.name, err)
+			return nil, err
+		}
+		isDuplicate[host] = true
+	}
+
+	// Give some basic info about redfish receiver status
+	cclog.ComponentInfo(r.name, "Monitoring", numClients, "clients")
+	cclog.ComponentInfo(r.name, "Monitoring interval:", r.config.Interval)
+	cclog.ComponentInfo(r.name, "Monitoring parallel fanout:", r.config.fanout)
+
+	return r, nil
+}

receivers/redfishReceiver.md

@@ -0,0 +1,54 @@
+## Redfish receiver
+
+The Redfish receiver uses the [Redfish (specification)](https://www.dmtf.org/standards/redfish) to query thermal and power metrics. Thermal metrics may include various fan speeds and temperatures. Power metrics may include the current power consumption of various hardware components. It may also include the minimum, maximum and average power consumption of these components in a given time interval. The receiver will poll each configured redfish device once in a given interval. Multiple devices can be accessed in parallel to increase throughput.
+
+### Configuration structure
+
+```json
+{
+    "<redfish receiver name>": {
+        "type": "redfish",
+        "username": "<user A>",
+        "password": "<password A>",
+        "endpoint": "https://%h-bmc",
+        "exclude_metrics": [ "min_consumed_watts" ],
+        "client_config": [
+            {
+                "host_list": [ "<host 1>", "<host 2>" ]
+            },
+            {
+                "host_list": [ "<host 3>", "<host 4>" ]
+                "disable_power_metrics": true
+            },
+            {
+                "host_list": [ "<host 5>" ],
+                "username": "<user B>",
+                "password": "<password B>",
+                "endpoint": "https://%h-BMC",
+                "disable_thermal_metrics": true
+            }
+        ]
+    }
+}
+```
+
+Global settings:
+
+- `fanout`: Maximum number of simultaneous redfish connections (default: 64)
+- `interval`: How often the redfish power metrics should be read and send to the sink (default: 30 s)
+- `http_insecure`: Control whether a client verifies the server's certificate (default: true == do not verify server's certificate)
+- `http_timeout`: Time limit for requests made by this HTTP client (default: 10 s)
+
+Global and per redfish device settings (per redfish device settings overwrite the global settings):
+
+- `disable_power_metrics`: disable collection of power metrics
+- `disable_processor_metrics`: disable collection of processor metrics
+- `disable_thermal_metrics`: disable collection of thermal metrics
+- `exclude_metrics`: list of excluded metrics
+- `username`: User name to authenticate with
+- `password`: Password to use for authentication
+- `endpoint`: URL of the redfish service (placeholder `%h` gets replaced by the hostname)
+
+Per redfish device settings:
+
+- `host_list`: List of hosts with the same client configuration

receivers/sampleReceiver.go

@@ -4,7 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
 )
 
 // SampleReceiver configuration: receiver type, listen address, port
@@ -36,16 +36,26 @@ func (r *SampleReceiver) Start() {
 
 	// or use own go routine but always make sure it exits
 	// as soon as it gets the signal of the r.done channel
+	//
+	// r.done = make(chan bool)
 	// r.wg.Add(1)
 	// go func() {
+	//      defer r.wg.Done()
+	//
+	//      // Create ticker
+	//      ticker := time.NewTicker(30 * time.Second)
+	//      defer ticker.Stop()
+	//
 	//      for {
+	//          readMetric()
 	//          select {
+	//          case <-ticker.C:
+	//              // process ticker event -> continue
+	//              continue
 	//          case <-r.done:
-	// 			r.wg.Done()
 	//              return
 	//          }
 	//      }
-	// 	r.wg.Done()
 	// }()
 }
 

scripts/cc-metric-collector.config

@@ -6,7 +6,7 @@ CC_HOME=/tmp
 
 LOG_DIR=/var/log
 
-DATA_DIR=/var/lib/grafana
+DATA_DIR=/var/lib/cc-metric-collector
 
 MAX_OPEN_FILES=10000
 
@@ -15,3 +15,9 @@ CONF_DIR=/etc/cc-metric-collector
 CONF_FILE=/etc/cc-metric-collector/cc-metric-collector.json
 
 RESTART_ON_UPGRADE=true
+
+# Golang runtime debugging. (see: https://pkg.go.dev/runtime)
+# GODEBUG=gctrace=1
+
+# Golang garbage collection target percentage
+# GOGC=100

scripts/cc-metric-collector.deb.rules

@@ -0,0 +1,16 @@
+
+#!/usr/bin/make -f
+# You must remove unused comment lines for the released package.
+#export DH_VERBOSE = 1
+#export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+#export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
+#export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
+
+%:
+        dh $@
+
+override_dh_auto_build:
+        make
+
+override_dh_auto_install:
+        make PREFIX=/usr install

scripts/cc-metric-collector.init

@@ -19,7 +19,7 @@
 PATH=/bin:/usr/bin:/sbin:/usr/sbin
 NAME=cc-metric-collector
 DESC="ClusterCockpit metric collector"
-DEFAULT=/etc/default/${NAME}.json
+DEFAULT=/etc/default/${NAME}
 
 CC_USER=clustercockpit
 CC_GROUP=clustercockpit
@@ -75,7 +75,7 @@ case "$1" in
 	fi
 
 	# Start Daemon
-	start-stop-daemon --start -b --chdir "$WORK_DIR" --user "$CC_USER" -c "$CC_USER" --pidfile "$PID_FILE" --exec $DAEMON -- $DAEMON_OPTS
+	start-stop-daemon --start -b --chdir "$WORK_DIR" --user "$CC_USER" -c "$CC_USER" --pidfile "$PID_FILE" --exec $DAEMON -- $CC_OPTS
 	return=$?
 	if [ $return -eq 0 ]
 	then

scripts/likwid_perfgroup_to_cc_config.py

@@ -39,7 +39,7 @@ def group_to_json(groupfile):
             llist = re.split("\s+", line)
             calc = llist[-1]
             metric = " ".join(llist[:-1])
-            scope = "cpu"
+            scope = "hwthread"
             if "BOX" in calc:
                 scope = "socket"
             if "PWR" in calc:

sinks.json

@@ -1,6 +1,8 @@
 {
-  "mystdout" : {
+  "mystdout": {
-    "type" : "stdout",
+    "type": "stdout",
-    "meta_as_tags" : true
+    "meta_as_tags": [
+      "unit"
+    ]
   }
 }

sinks/gangliaCommon.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"strings"
 
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 func GangliaMetricName(point lp.CCMetric) string {

sinks/gangliaSink.go

@@ -9,8 +9,8 @@ import (
 	//	"time"
 	"os/exec"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const GMETRIC_EXEC = `gmetric`

sinks/httpSink.go

@@ -9,8 +9,8 @@ import (
 	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	influx "github.com/influxdata/line-protocol"
 )
 
@@ -19,9 +19,9 @@ type HttpSinkConfig struct {
 	URL             string `json:"url,omitempty"`
 	JWT             string `json:"jwt,omitempty"`
 	Timeout         string `json:"timeout,omitempty"`
-	MaxIdleConns    int    `json:"max_idle_connections,omitempty"`
 	IdleConnTimeout string `json:"idle_connection_timeout,omitempty"`
 	FlushDelay      string `json:"flush_delay,omitempty"`
+	MaxRetries      int    `json:"max_retries,omitempty"`
 }
 
 type HttpSink struct {
@@ -32,58 +32,58 @@ type HttpSink struct {
 	buffer          *bytes.Buffer
 	flushTimer      *time.Timer
 	config          HttpSinkConfig
-	maxIdleConns    int
 	idleConnTimeout time.Duration
 	timeout         time.Duration
 	flushDelay      time.Duration
 }
 
 func (s *HttpSink) Write(m lp.CCMetric) error {
-	if s.buffer.Len() == 0 && s.flushDelay != 0 {
-		// This is the first write since the last flush, start the flushTimer!
-		if s.flushTimer != nil && s.flushTimer.Stop() {
-			cclog.ComponentDebug("HttpSink", "unexpected: the flushTimer was already running?")
-		}
-
-		// Run a batched flush for all lines that have arrived in the last second
-		s.flushTimer = time.AfterFunc(s.flushDelay, func() {
-			if err := s.Flush(); err != nil {
-				cclog.ComponentError("HttpSink", "flush failed:", err.Error())
-			}
-		})
-	}
-
 	p := m.ToPoint(s.meta_as_tags)
-
 	s.lock.Lock()
+	firstWriteOfBatch := s.buffer.Len() == 0
 	_, err := s.encoder.Encode(p)
-	s.lock.Unlock() // defer does not work here as Flush() takes the lock as well
+	s.lock.Unlock()
-
 	if err != nil {
+		cclog.ComponentError(s.name, "encoding failed:", err.Error())
 		return err
 	}
 
-	// Flush synchronously if "flush_delay" is zero
 	if s.flushDelay == 0 {
 		return s.Flush()
 	}
 
-	return err
+	if firstWriteOfBatch {
+		if s.flushTimer == nil {
+			s.flushTimer = time.AfterFunc(s.flushDelay, func() {
+				if err := s.Flush(); err != nil {
+					cclog.ComponentError(s.name, "flush failed:", err.Error())
+				}
+			})
+		} else {
+			s.flushTimer.Reset(s.flushDelay)
+		}
+	}
+
+	return nil
 }
 
 func (s *HttpSink) Flush() error {
-	// buffer is read by client.Do, prevent concurrent modifications
+	// Own lock for as short as possible: the time it takes to copy the buffer.
 	s.lock.Lock()
-	defer s.lock.Unlock()
+	buf := make([]byte, s.buffer.Len())
-
+	copy(buf, s.buffer.Bytes())
-	// Do not flush empty buffer
+	s.buffer.Reset()
-	if s.buffer.Len() == 0 {
+	s.lock.Unlock()
+	if len(buf) == 0 {
 		return nil
 	}
 
+	var res *http.Response
+	for i := 0; i < s.config.MaxRetries; i++ {
 		// Create new request to send buffer
-	req, err := http.NewRequest(http.MethodPost, s.config.URL, s.buffer)
+		req, err := http.NewRequest(http.MethodPost, s.config.URL, bytes.NewReader(buf))
 		if err != nil {
+			cclog.ComponentError(s.name, "failed to create request:", err.Error())
 			return err
 		}
 
@@ -92,20 +92,27 @@ func (s *HttpSink) Flush() error {
 			req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", s.config.JWT))
 		}
 
-	// Send
+		// Do request
-	res, err := s.client.Do(req)
+		res, err = s.client.Do(req)
-
-	// Clear buffer
-	s.buffer.Reset()
-
-	// Handle transport/tcp errors
 		if err != nil {
-		return err
+			cclog.ComponentError(s.name, "transport/tcp error:", err.Error())
+			// Wait between retries
+			time.Sleep(time.Duration(i+1) * (time.Second / 2))
+			continue
+		}
+
+		break
+	}
+
+	if res == nil {
+		return errors.New("flush failed due to repeated errors")
 	}
 
 	// Handle application errors
 	if res.StatusCode != http.StatusOK {
-		return errors.New(res.Status)
+		err := errors.New(res.Status)
+		cclog.ComponentError(s.name, "application error:", err.Error())
+		return err
 	}
 
 	return nil
@@ -114,7 +121,7 @@ func (s *HttpSink) Flush() error {
 func (s *HttpSink) Close() {
 	s.flushTimer.Stop()
 	if err := s.Flush(); err != nil {
-		cclog.ComponentError("HttpSink", "flush failed:", err.Error())
+		cclog.ComponentError(s.name, "flush failed:", err.Error())
 	}
 	s.client.CloseIdleConnections()
 }
@@ -123,10 +130,10 @@ func NewHttpSink(name string, config json.RawMessage) (Sink, error) {
 	s := new(HttpSink)
 	// Set default values
 	s.name = fmt.Sprintf("HttpSink(%s)", name)
-	s.config.MaxIdleConns = 10
+	s.config.IdleConnTimeout = "120s" // should be larger than the measurement interval.
-	s.config.IdleConnTimeout = "5s"
 	s.config.Timeout = "5s"
-	s.config.FlushDelay = "1s"
+	s.config.FlushDelay = "5s"
+	s.config.MaxRetries = 3
 
 	// Read config
 	if len(config) > 0 {
@@ -138,9 +145,6 @@ func NewHttpSink(name string, config json.RawMessage) (Sink, error) {
 	if len(s.config.URL) == 0 {
 		return nil, errors.New("`url` config option is required for HTTP sink")
 	}
-	if s.config.MaxIdleConns > 0 {
-		s.maxIdleConns = s.config.MaxIdleConns
-	}
 	if len(s.config.IdleConnTimeout) > 0 {
 		t, err := time.ParseDuration(s.config.IdleConnTimeout)
 		if err == nil {
@@ -165,7 +169,7 @@ func NewHttpSink(name string, config json.RawMessage) (Sink, error) {
 		s.meta_as_tags[k] = true
 	}
 	tr := &http.Transport{
-		MaxIdleConns:    s.maxIdleConns,
+		MaxIdleConns:    1, // We will only ever talk to one host.
 		IdleConnTimeout: s.idleConnTimeout,
 	}
 	s.client = &http.Client{Transport: tr, Timeout: s.timeout}

sinks/influxAsyncSink.go

@@ -6,12 +6,14 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"strings"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	influxdb2 "github.com/influxdata/influxdb-client-go/v2"
 	influxdb2Api "github.com/influxdata/influxdb-client-go/v2/api"
+	influxdb2ApiHttp "github.com/influxdata/influxdb-client-go/v2/api/http"
 )
 
 type InfluxAsyncSinkConfig struct {
@@ -23,15 +25,16 @@ type InfluxAsyncSinkConfig struct {
 	Password     string `json:"password,omitempty"`
 	Organization string `json:"organization,omitempty"`
 	SSL          bool   `json:"ssl,omitempty"`
-	RetentionPol string `json:"retention_policy,omitempty"`
 	// Maximum number of points sent to server in single request. Default 5000
 	BatchSize uint `json:"batch_size,omitempty"`
 	// Interval, in ms, in which is buffer flushed if it has not been already written (by reaching batch size) . Default 1000ms
 	FlushInterval         uint   `json:"flush_interval,omitempty"`
-	InfluxRetryInterval   string `json:"retry_interval"`
+	InfluxRetryInterval   string `json:"retry_interval,omitempty"`
-	InfluxExponentialBase uint   `json:"retry_exponential_base"`
+	InfluxExponentialBase uint   `json:"retry_exponential_base,omitempty"`
-	InfluxMaxRetries      uint   `json:"max_retries"`
+	InfluxMaxRetries      uint   `json:"max_retries,omitempty"`
-	InfluxMaxRetryTime    string `json:"max_retry_time"`
+	InfluxMaxRetryTime    string `json:"max_retry_time,omitempty"`
+	CustomFlushInterval   string `json:"custom_flush_interval,omitempty"`
+	MaxRetryAttempts      uint   `json:"max_retry_attempts,omitempty"`
 }
 
 type InfluxAsyncSink struct {
@@ -42,6 +45,8 @@ type InfluxAsyncSink struct {
 	config              InfluxAsyncSinkConfig
 	influxRetryInterval uint
 	influxMaxRetryTime  uint
+	customFlushInterval time.Duration
+	flushTimer          *time.Timer
 }
 
 func (s *InfluxAsyncSink) connect() error {
@@ -60,20 +65,34 @@ func (s *InfluxAsyncSink) connect() error {
 	cclog.ComponentDebug(s.name, "Using URI", uri, "Org", s.config.Organization, "Bucket", s.config.Database)
 	clientOptions := influxdb2.DefaultOptions()
 	if s.config.BatchSize != 0 {
+		cclog.ComponentDebug(s.name, "Batch size", s.config.BatchSize)
 		clientOptions.SetBatchSize(s.config.BatchSize)
 	}
 	if s.config.FlushInterval != 0 {
+		cclog.ComponentDebug(s.name, "Flush interval", s.config.FlushInterval)
 		clientOptions.SetFlushInterval(s.config.FlushInterval)
 	}
+	if s.influxRetryInterval != 0 {
+		cclog.ComponentDebug(s.name, "MaxRetryInterval", s.influxRetryInterval)
+		clientOptions.SetMaxRetryInterval(s.influxRetryInterval)
+	}
+	if s.influxMaxRetryTime != 0 {
+		cclog.ComponentDebug(s.name, "MaxRetryTime", s.influxMaxRetryTime)
+		clientOptions.SetMaxRetryTime(s.influxMaxRetryTime)
+	}
+	if s.config.InfluxExponentialBase != 0 {
+		cclog.ComponentDebug(s.name, "Exponential Base", s.config.InfluxExponentialBase)
+		clientOptions.SetExponentialBase(s.config.InfluxExponentialBase)
+	}
+	if s.config.InfluxMaxRetries != 0 {
+		cclog.ComponentDebug(s.name, "Max Retries", s.config.InfluxMaxRetries)
+		clientOptions.SetMaxRetries(s.config.InfluxMaxRetries)
+	}
 	clientOptions.SetTLSConfig(
 		&tls.Config{
 			InsecureSkipVerify: true,
 		},
-	)
+	).SetPrecision(time.Second)
-	clientOptions.SetMaxRetryInterval(s.influxRetryInterval)
-	clientOptions.SetMaxRetryTime(s.influxMaxRetryTime)
-	clientOptions.SetExponentialBase(s.config.InfluxExponentialBase)
-	clientOptions.SetMaxRetries(s.config.InfluxMaxRetries)
 
 	s.client = influxdb2.NewClientWithOptions(uri, auth, clientOptions)
 	s.writeApi = s.client.WriteAPI(s.config.Organization, s.config.Database)
@@ -84,10 +103,23 @@ func (s *InfluxAsyncSink) connect() error {
 	if !ok {
 		return fmt.Errorf("connection to %s not healthy", uri)
 	}
+	s.writeApi.SetWriteFailedCallback(func(batch string, err influxdb2ApiHttp.Error, retryAttempts uint) bool {
+		mlist := strings.Split(batch, "\n")
+		cclog.ComponentError(s.name, fmt.Sprintf("Failed to write batch with %d metrics %d times (max: %d): %s", len(mlist), retryAttempts, s.config.MaxRetryAttempts, err.Error()))
+		return retryAttempts <= s.config.MaxRetryAttempts
+	})
 	return nil
 }
 
 func (s *InfluxAsyncSink) Write(m lp.CCMetric) error {
+	if s.customFlushInterval != 0 && s.flushTimer == nil {
+		// Run a batched flush for all lines that have arrived in the defined interval
+		s.flushTimer = time.AfterFunc(s.customFlushInterval, func() {
+			if err := s.Flush(); err != nil {
+				cclog.ComponentError(s.name, "flush failed:", err.Error())
+			}
+		})
+	}
 	s.writeApi.WritePoint(
 		m.ToPoint(s.meta_as_tags),
 	)
@@ -95,7 +127,11 @@ func (s *InfluxAsyncSink) Write(m lp.CCMetric) error {
 }
 
 func (s *InfluxAsyncSink) Flush() error {
+	cclog.ComponentDebug(s.name, "Flushing")
 	s.writeApi.Flush()
+	if s.customFlushInterval != 0 && s.flushTimer != nil {
+		s.flushTimer = nil
+	}
 	return nil
 }
 
@@ -110,13 +146,17 @@ func NewInfluxAsyncSink(name string, config json.RawMessage) (Sink, error) {
 	s.name = fmt.Sprintf("InfluxSink(%s)", name)
 
 	// Set default for maximum number of points sent to server in single request.
-	s.config.BatchSize = 100
+	s.config.BatchSize = 0
-	s.influxRetryInterval = uint(time.Duration(1) * time.Second)
+	s.influxRetryInterval = 0
-	s.config.InfluxRetryInterval = "1s"
+	//s.config.InfluxRetryInterval = "1s"
-	s.influxMaxRetryTime = uint(7 * time.Duration(24) * time.Hour)
+	s.influxMaxRetryTime = 0
-	s.config.InfluxMaxRetryTime = "168h"
+	//s.config.InfluxMaxRetryTime = "168h"
-	s.config.InfluxMaxRetries = 20
+	s.config.InfluxMaxRetries = 0
-	s.config.InfluxExponentialBase = 2
+	s.config.InfluxExponentialBase = 0
+	s.config.FlushInterval = 0
+	s.config.CustomFlushInterval = ""
+	s.customFlushInterval = time.Duration(0)
+	s.config.MaxRetryAttempts = 1
 
 	// Default retry intervals (in seconds)
 	// 1 2
@@ -145,12 +185,17 @@ func NewInfluxAsyncSink(name string, config json.RawMessage) (Sink, error) {
 			return nil, err
 		}
 	}
-	if len(s.config.Host) == 0 ||
+	if len(s.config.Port) == 0 {
-		len(s.config.Port) == 0 ||
+		return nil, errors.New("Missing port configuration required by InfluxSink")
-		len(s.config.Database) == 0 ||
+	}
-		len(s.config.Organization) == 0 ||
+	if len(s.config.Database) == 0 {
-		len(s.config.Password) == 0 {
+		return nil, errors.New("Missing database configuration required by InfluxSink")
-		return nil, errors.New("not all configuration variables set required by InfluxAsyncSink")
+	}
+	if len(s.config.Organization) == 0 {
+		return nil, errors.New("Missing organization configuration required by InfluxSink")
+	}
+	if len(s.config.Password) == 0 {
+		return nil, errors.New("Missing password configuration required by InfluxSink")
 	}
 	// Create lookup map to use meta infos as tags in the output metric
 	s.meta_as_tags = make(map[string]bool)
@@ -168,6 +213,15 @@ func NewInfluxAsyncSink(name string, config json.RawMessage) (Sink, error) {
 	s.influxRetryInterval = toUint(s.config.InfluxRetryInterval, s.influxRetryInterval)
 	s.influxMaxRetryTime = toUint(s.config.InfluxMaxRetryTime, s.influxMaxRetryTime)
 
+	// Use a own timer for calling Flush()
+	if len(s.config.CustomFlushInterval) > 0 {
+		t, err := time.ParseDuration(s.config.CustomFlushInterval)
+		if err != nil {
+			return nil, fmt.Errorf("invalid duration in 'custom_flush_interval': %v", err)
+		}
+		s.customFlushInterval = t
+	}
+
 	// Connect to InfluxDB server
 	if err := s.connect(); err != nil {
 		return nil, fmt.Errorf("unable to connect: %v", err)

sinks/influxSink.go

@@ -6,15 +6,21 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	influxdb2 "github.com/influxdata/influxdb-client-go/v2"
 	influxdb2Api "github.com/influxdata/influxdb-client-go/v2/api"
+	"github.com/influxdata/influxdb-client-go/v2/api/write"
 )
 
-type InfluxSinkConfig struct {
+type InfluxSink struct {
+	sink
+	client   influxdb2.Client
+	writeApi influxdb2Api.WriteAPIBlocking
+	config   struct {
 		defaultSinkConfig
 		Host         string `json:"host,omitempty"`
 		Port         string `json:"port,omitempty"`
@@ -23,52 +29,69 @@ type InfluxSinkConfig struct {
 		Password     string `json:"password,omitempty"`
 		Organization string `json:"organization,omitempty"`
 		SSL          bool   `json:"ssl,omitempty"`
-	RetentionPol          string `json:"retention_policy,omitempty"`
+		// Maximum number of points sent to server in single request.
-	InfluxRetryInterval   string `json:"retry_interval"`
+		// Default: 1000
-	InfluxExponentialBase uint   `json:"retry_exponential_base"`
+		BatchSize int `json:"batch_size,omitempty"`
-	InfluxMaxRetries      uint   `json:"max_retries"`
+		// Time interval for delayed sending of metrics.
-	InfluxMaxRetryTime    string `json:"max_retry_time"`
+		// If the buffers are already filled before the end of this interval,
-	//InfluxMaxRetryDelay  string `json:"max_retry_delay"` // It is mentioned in the docs but there is no way to set it
+		// the metrics are sent without further delay.
-}
+		// Default: 1s
-
+		FlushInterval string `json:"flush_delay,omitempty"`
-type InfluxSink struct {
+		// Number of metrics that are dropped when buffer is full
-	sink
+		// Default: 100
-	client              influxdb2.Client
+		DropRate int `json:"drop_rate,omitempty"`
-	writeApi            influxdb2Api.WriteAPIBlocking
+	}
-	config              InfluxSinkConfig
+	batch           []*write.Point
-	influxRetryInterval uint
+	flushTimer      *time.Timer
-	influxMaxRetryTime  uint
+	flushDelay      time.Duration
-	//influxMaxRetryDelay uint
+	batchMutex      sync.Mutex // Flush() runs in another goroutine, so this lock has to protect the buffer
+	flushTimerMutex sync.Mutex // Ensure only one flush timer is running
 }
 
+// connect connects to the InfluxDB server
 func (s *InfluxSink) connect() error {
-	var auth string
+
+	// URI options:
+	// * http://host:port
+	// * https://host:port
 	var uri string
 	if s.config.SSL {
 		uri = fmt.Sprintf("https://%s:%s", s.config.Host, s.config.Port)
 	} else {
 		uri = fmt.Sprintf("http://%s:%s", s.config.Host, s.config.Port)
 	}
+
+	// Authentication options:
+	// * token
+	// * username:password
+	var auth string
 	if len(s.config.User) == 0 {
 		auth = s.config.Password
 	} else {
 		auth = fmt.Sprintf("%s:%s", s.config.User, s.config.Password)
 	}
-	cclog.ComponentDebug(s.name, "Using URI", uri, "Org", s.config.Organization, "Bucket", s.config.Database)
+	cclog.ComponentDebug(s.name,
+		"Using URI='"+uri+"'",
+		"Org='"+s.config.Organization+"'",
+		"Bucket='"+s.config.Database+"'")
+
+	// Set influxDB client options
 	clientOptions := influxdb2.DefaultOptions()
+
+	// Do not check InfluxDB certificate
 	clientOptions.SetTLSConfig(
 		&tls.Config{
 			InsecureSkipVerify: true,
 		},
 	)
 
-	clientOptions.SetMaxRetryInterval(s.influxRetryInterval)
+	clientOptions.SetPrecision(time.Second)
-	clientOptions.SetMaxRetryTime(s.influxMaxRetryTime)
-	clientOptions.SetExponentialBase(s.config.InfluxExponentialBase)
-	clientOptions.SetMaxRetries(s.config.InfluxMaxRetries)
 
+	// Create new writeAPI
 	s.client = influxdb2.NewClientWithOptions(uri, auth, clientOptions)
 	s.writeApi = s.client.WriteAPIBlocking(s.config.Organization, s.config.Database)
+
+	// Check InfluxDB server accessibility
 	ok, err := s.client.Ping(context.Background())
 	if err != nil {
 		return err
@@ -80,65 +103,163 @@ func (s *InfluxSink) connect() error {
 }
 
 func (s *InfluxSink) Write(m lp.CCMetric) error {
-	err :=
+
-		s.writeApi.WritePoint(
+	if s.flushDelay != 0 && s.flushTimerMutex.TryLock() {
-			context.Background(),
+		// Run a batched flush for all metrics that arrived in the last flush delay interval
-			m.ToPoint(s.meta_as_tags),
+		cclog.ComponentDebug(s.name, "Starting new flush timer")
-		)
+		s.flushTimer = time.AfterFunc(
-	return err
+			s.flushDelay,
+			func() {
+				defer s.flushTimerMutex.Unlock()
+				cclog.ComponentDebug(s.name, "Starting flush in flush timer")
+				if err := s.Flush(); err != nil {
+					cclog.ComponentError(s.name, "Flush timer: flush failed:", err)
+				}
+			})
+	}
+
+	// Lock access to batch slice
+	s.batchMutex.Lock()
+
+	// batch slice full, dropping oldest metric(s)
+	// e.g. when previous flushes failed and batch slice was not cleared
+	if len(s.batch) == s.config.BatchSize {
+		newSize := s.config.BatchSize - s.config.DropRate
+
+		for i := 0; i < newSize; i++ {
+			s.batch[i] = s.batch[i+s.config.DropRate]
+		}
+		for i := newSize; i < s.config.BatchSize; i++ {
+			s.batch[i] = nil
+		}
+		s.batch = s.batch[:newSize]
+		cclog.ComponentError(s.name, "Batch slice full, dropping", s.config.DropRate, "oldest metric(s)")
+	}
+
+	// Append metric to batch slice
+	p := m.ToPoint(s.meta_as_tags)
+	s.batch = append(s.batch, p)
+
+	// Flush synchronously if "flush_delay" is zero
+	// or
+	// Flush if batch size is reached
+	if s.flushDelay == 0 ||
+		len(s.batch) == s.config.BatchSize {
+		// Unlock access to batch slice
+		s.batchMutex.Unlock()
+		return s.Flush()
+	}
+
+	// Unlock access to batch slice
+	s.batchMutex.Unlock()
+	return nil
 }
 
+// Flush sends all metrics buffered in batch slice to InfluxDB server
 func (s *InfluxSink) Flush() error {
+	cclog.ComponentDebug(s.name, "Flushing")
+
+	// Lock access to batch slice
+	s.batchMutex.Lock()
+	defer s.batchMutex.Unlock()
+
+	// Nothing to do, batch slice is empty
+	if len(s.batch) == 0 {
+		return nil
+	}
+
+	// Send metrics from batch slice
+	err := s.writeApi.WritePoint(context.Background(), s.batch...)
+	if err != nil {
+		cclog.ComponentError(s.name, "Flush(): Flush of", len(s.batch), "metrics failed:", err)
+		return err
+	}
+
+	// Clear batch slice
+	for i := range s.batch {
+		s.batch[i] = nil
+	}
+	s.batch = s.batch[:0]
+
 	return nil
 }
 
 func (s *InfluxSink) Close() {
 	cclog.ComponentDebug(s.name, "Closing InfluxDB connection")
+	s.flushTimer.Stop()
+	s.Flush()
+	if err := s.Flush(); err != nil {
+		cclog.ComponentError(s.name, "Close(): Flush failed:", err)
+	}
 	s.client.Close()
 }
 
+// NewInfluxSink create a new InfluxDB sink
 func NewInfluxSink(name string, config json.RawMessage) (Sink, error) {
 	s := new(InfluxSink)
 	s.name = fmt.Sprintf("InfluxSink(%s)", name)
+
+	// Set config default values
+	s.config.BatchSize = 1000
+	s.config.FlushInterval = "1s"
+	s.config.DropRate = 100
+
+	// Read config
 	if len(config) > 0 {
 		err := json.Unmarshal(config, &s.config)
 		if err != nil {
-			return nil, err
+			return s, err
 		}
 	}
-	s.influxRetryInterval = uint(time.Duration(1) * time.Second)
-	s.config.InfluxRetryInterval = "1s"
-	s.influxMaxRetryTime = uint(7 * time.Duration(24) * time.Hour)
-	s.config.InfluxMaxRetryTime = "168h"
-	s.config.InfluxMaxRetries = 20
-	s.config.InfluxExponentialBase = 2
 
-	if len(s.config.Host) == 0 ||
+	if len(s.config.Host) == 0 {
-		len(s.config.Port) == 0 ||
+		return s, errors.New("Missing host configuration required by InfluxSink")
-		len(s.config.Database) == 0 ||
-		len(s.config.Organization) == 0 ||
-		len(s.config.Password) == 0 {
-		return nil, errors.New("not all configuration variables set required by InfluxSink")
 	}
+	if len(s.config.Port) == 0 {
+		return s, errors.New("Missing port configuration required by InfluxSink")
+	}
+	if len(s.config.Database) == 0 {
+		return s, errors.New("Missing database configuration required by InfluxSink")
+	}
+	if len(s.config.Organization) == 0 {
+		return s, errors.New("Missing organization configuration required by InfluxSink")
+	}
+	if len(s.config.Password) == 0 {
+		return s, errors.New("Missing password configuration required by InfluxSink")
+	}
+
 	// Create lookup map to use meta infos as tags in the output metric
 	s.meta_as_tags = make(map[string]bool)
 	for _, k := range s.config.MetaAsTags {
 		s.meta_as_tags[k] = true
 	}
 
-	toUint := func(duration string, def uint) uint {
+	// Configure flush delay duration
-		t, err := time.ParseDuration(duration)
+	if len(s.config.FlushInterval) > 0 {
+		t, err := time.ParseDuration(s.config.FlushInterval)
 		if err == nil {
-			return uint(t.Milliseconds())
+			s.flushDelay = t
 		}
-		return def
 	}
-	s.influxRetryInterval = toUint(s.config.InfluxRetryInterval, s.influxRetryInterval)
+
-	s.influxMaxRetryTime = toUint(s.config.InfluxMaxRetryTime, s.influxMaxRetryTime)
+	if !(s.config.BatchSize > 0) {
+		return s, fmt.Errorf("batch_size=%d in InfluxDB config must be > 0", s.config.BatchSize)
+	}
+	if !(s.config.DropRate > 0) {
+		return s, fmt.Errorf("drop_rate=%d in InfluxDB config must be > 0", s.config.DropRate)
+	}
+	if !(s.config.BatchSize > s.config.DropRate) {
+		return s, fmt.Errorf(
+			"batch_size=%d must be greater then drop_rate=%d in InfluxDB config",
+			s.config.BatchSize, s.config.DropRate)
+	}
+
+	// allocate batch slice
+	s.batch = make([]*write.Point, 0, s.config.BatchSize)
 
 	// Connect to InfluxDB server
 	if err := s.connect(); err != nil {
-		return nil, fmt.Errorf("unable to connect: %v", err)
+		return s, fmt.Errorf("unable to connect: %v", err)
 	}
 	return s, nil
 }

sinks/influxSink.md

@@ -17,10 +17,8 @@ The `influxdb` sink uses the official [InfluxDB golang client](https://pkg.go.de
     "password" : "examplepw",
     "organization": "myorg",
     "ssl": true,
-    "retry_interval" : "1s",
+    "flush_delay" : "1s",
-    "retry_exponential_base" : 2,
+    "batch_size" : 100
-    "max_retries": 20,
-    "max_retry_time" : "168h"
   }
 }
 ```
@@ -34,9 +32,6 @@ The `influxdb` sink uses the official [InfluxDB golang client](https://pkg.go.de
 - `password`: Password for basic authentification
 - `organization`: Organization in the InfluxDB
 - `ssl`: Use SSL connection
-- `retry_interval`: Base retry interval for failed write requests, default 1s
+- `flush_delay`: Group metrics coming in to a single batch
-- `retry_exponential_base`: The retry interval is exponentially increased with this base, default 2
+- `batch_size`: Maximal batch size
-- `max_retries`: Maximal number of retry attempts
-- `max_retry_time`: Maximal time to retry failed writes, default 168h (one week)
 
-For information about the calculation of the retry interval settings, see [offical influxdb-client-go documentation](https://github.com/influxdata/influxdb-client-go#handling-of-failed-async-writes)

sinks/libgangliaSink.go

@@ -71,8 +71,8 @@ import (
 	"fmt"
 	"unsafe"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	"github.com/NVIDIA/go-nvml/pkg/dl"
 )
 

sinks/metricSink.go

@@ -1,7 +1,7 @@
 package sinks
 
 import (
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 type defaultSinkConfig struct {

sinks/natsSink.go

@@ -5,10 +5,11 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"sync"
 	"time"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	influx "github.com/influxdata/line-protocol"
 	nats "github.com/nats-io/nats.go"
 )
@@ -17,9 +18,10 @@ type NatsSinkConfig struct {
 	defaultSinkConfig
 	Host       string `json:"host,omitempty"`
 	Port       string `json:"port,omitempty"`
-	Database string `json:"database,omitempty"`
+	Subject    string `json:"subject,omitempty"`
 	User       string `json:"user,omitempty"`
 	Password   string `json:"password,omitempty"`
+	FlushDelay string `json:"flush_delay,omitempty"`
 }
 
 type NatsSink struct {
@@ -28,6 +30,10 @@ type NatsSink struct {
 	encoder *influx.Encoder
 	buffer  *bytes.Buffer
 	config  NatsSinkConfig
+
+	lock       sync.Mutex
+	flushDelay time.Duration
+	flushTimer *time.Timer
 }
 
 func (s *NatsSink) connect() error {
@@ -54,37 +60,53 @@ func (s *NatsSink) connect() error {
 }
 
 func (s *NatsSink) Write(m lp.CCMetric) error {
-	if s.client != nil {
+	s.lock.Lock()
 	_, err := s.encoder.Encode(m.ToPoint(s.meta_as_tags))
+	s.lock.Unlock()
 	if err != nil {
 		cclog.ComponentError(s.name, "Write:", err.Error())
 		return err
 	}
+
+	if s.flushDelay == 0 {
+		s.Flush()
+	} else if s.flushTimer == nil {
+		s.flushTimer = time.AfterFunc(s.flushDelay, func() {
+			s.Flush()
+		})
+	} else {
+		s.flushTimer.Reset(s.flushDelay)
 	}
+
 	return nil
 }
 
 func (s *NatsSink) Flush() error {
-	if s.client != nil {
+	s.lock.Lock()
-		if err := s.client.Publish(s.config.Database, s.buffer.Bytes()); err != nil {
+	buf := append([]byte{}, s.buffer.Bytes()...) // copy bytes
+	s.buffer.Reset()
+	s.lock.Unlock()
+
+	if len(buf) == 0 {
+		return nil
+	}
+
+	if err := s.client.Publish(s.config.Subject, buf); err != nil {
 		cclog.ComponentError(s.name, "Flush:", err.Error())
 		return err
 	}
-		s.buffer.Reset()
-	}
 	return nil
 }
 
 func (s *NatsSink) Close() {
-	if s.client != nil {
 	cclog.ComponentDebug(s.name, "Close")
 	s.client.Close()
-	}
 }
 
 func NewNatsSink(name string, config json.RawMessage) (Sink, error) {
 	s := new(NatsSink)
 	s.name = fmt.Sprintf("NatsSink(%s)", name)
+	s.flushDelay = 10 * time.Second
 	if len(config) > 0 {
 		err := json.Unmarshal(config, &s.config)
 		if err != nil {
@@ -94,7 +116,7 @@ func NewNatsSink(name string, config json.RawMessage) (Sink, error) {
 	}
 	if len(s.config.Host) == 0 ||
 		len(s.config.Port) == 0 ||
-		len(s.config.Database) == 0 {
+		len(s.config.Subject) == 0 {
 		return nil, errors.New("not all configuration variables set required by NatsSink")
 	}
 	// Create lookup map to use meta infos as tags in the output metric
@@ -112,5 +134,15 @@ func NewNatsSink(name string, config json.RawMessage) (Sink, error) {
 	if err := s.connect(); err != nil {
 		return nil, fmt.Errorf("unable to connect: %v", err)
 	}
+
+	s.flushTimer = nil
+	if len(s.config.FlushDelay) != 0 {
+		var err error
+		s.flushDelay, err = time.ParseDuration(s.config.FlushDelay)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	return s, nil
 }

sinks/prometheusSink.go

@@ -9,8 +9,8 @@ import (
 	"strings"
 	"sync"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 	"github.com/gorilla/mux"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"

sinks/sampleSink.go

@@ -5,8 +5,8 @@ import (
 	"fmt"
 	"log"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 type SampleSinkConfig struct {

sinks/sinkManager.go

@@ -6,8 +6,8 @@ import (
 	"os"
 	"sync"
 
-	cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
+	cclog "github.com/ClusterCockpit/cc-metric-collector/pkg/ccLogger"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 const SINK_MAX_FORWARD = 50
@@ -76,11 +76,17 @@ func (sm *sinkManager) Init(wg *sync.WaitGroup, sinkConfigFile string) error {
 	for name, raw := range rawConfigs {
 		err = sm.AddOutput(name, raw)
 		if err != nil {
-			cclog.ComponentError("SinkManager", err.Error())
+			cclog.ComponentError("SinkManager", err)
 			continue
 		}
 	}
 
+	// Check that at least one sink is running
+	if !(len(sm.sinks) > 0) {
+		cclog.ComponentError("SinkManager", "Found no usable sinks")
+		return fmt.Errorf("Found no usable sinks")
+	}
+
 	return nil
 }
 

sinks/stdoutSink.go

@@ -7,7 +7,7 @@ import (
 	"strings"
 
 	//	"time"
-	lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
+	lp "github.com/ClusterCockpit/cc-metric-collector/pkg/ccMetric"
 )
 
 type StdoutSink struct {