Merge pull request #8 from ClusterCockpit/rename_and_makefile

Rename main Go file and add scripts for system(d) integration

Makefile

@@ -0,0 +1,81 @@
+
+APP = cc-metric-store
+GOSRC_APP        := cc-metric-store.go
+GOSRC_FILES      := api.go \
+		    memstore.go \
+		    archive.go \
+		    debug.go \
+		    float.go \
+		    lineprotocol.go \
+		    selector.go \
+		    stats.go
+
+
+
+BINDIR ?= bin
+
+
+.PHONY: all
+all: $(APP)
+
+$(APP): $(GOSRC)
+	go get
+	go build -o $(APP) $(GOSRC_APP) $(GOSRC_FILES)
+
+install: $(APP)
+	@WORKSPACE=$(PREFIX)
+	@if [ -z "$${WORKSPACE}" ]; then exit 1; fi
+	@mkdir --parents --verbose $${WORKSPACE}/usr/$(BINDIR)
+	@install -Dpm 755 $(APP) $${WORKSPACE}/usr/$(BINDIR)/$(APP)
+	@install -Dpm 600 config.json $${WORKSPACE}/$(APP)/$(APP).conf
+
+.PHONY: clean
+.ONESHELL:
+clean:
+	rm -f $(APP)
+
+.PHONY: fmt
+fmt:
+	go fmt $(GOSRC_APP)
+
+# Examine Go source code and reports suspicious constructs
+.PHONY: vet
+vet:
+	go 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
+	$$(go env GOPATH)/bin/staticcheck ./...
+
+.ONESHELL:
+.PHONY: RPM
+RPM: scripts/cc-metric-collector.spec
+	@WORKSPACE="$${PWD}"
+	@SPECFILE="$${WORKSPACE}/scripts/cc-metric-store.spec"
+	# Setup RPM build tree
+	@eval $$(rpm --eval "ARCH='%{_arch}' RPMDIR='%{_rpmdir}' SOURCEDIR='%{_sourcedir}' SPECDIR='%{_specdir}' SRPMDIR='%{_srcrpmdir}' BUILDDIR='%{_builddir}'")
+	@mkdir --parents --verbose "$${RPMDIR}" "$${SOURCEDIR}" "$${SPECDIR}" "$${SRPMDIR}" "$${BUILDDIR}"
+	# Create source tarball
+	@COMMITISH="HEAD"
+	@VERS=$$(git describe --tags $${COMMITISH})
+	@VERS=$${VERS#v}
+	@VERS=$$(echo $$VERS | sed -e s+'-'+'_'+g)
+	@eval $$(rpmspec --query --queryformat "NAME='%{name}' VERSION='%{version}' RELEASE='%{release}' NVR='%{NVR}' NVRA='%{NVRA}'" --define="VERS $${VERS}" "$${SPECFILE}")
+	@PREFIX="$${NAME}-$${VERSION}"
+	@FORMAT="tar.gz"
+	@SRCFILE="$${SOURCEDIR}/$${PREFIX}.$${FORMAT}"
+	@git archive --verbose --format "$${FORMAT}" --prefix="$${PREFIX}/" --output="$${SRCFILE}" $${COMMITISH}
+	# Build RPM and SRPM
+	@rpmbuild -ba --define="VERS $${VERS}" --rmsource --clean "$${SPECFILE}"
+	# Report RPMs and SRPMs when in GitHub Workflow
+	@if [[ "$${GITHUB_ACTIONS}" == true ]]; then
+	@     RPMFILE="$${RPMDIR}/$${ARCH}/$${NVRA}.rpm"
+	@     SRPMFILE="$${SRPMDIR}/$${NVR}.src.rpm"
+	@     echo "RPM: $${RPMFILE}"
+	@     echo "SRPM: $${SRPMFILE}"
+	@     echo "::set-output name=SRPM::$${SRPMFILE}"
+	@     echo "::set-output name=RPM::$${RPMFILE}"
+	@fi

scripts/cc-metric-store.config

@@ -0,0 +1,17 @@
+CC_USER=clustercockpit
+
+CC_GROUP=clustercockpit
+
+CC_HOME=/tmp
+
+LOG_DIR=/var/log
+
+DATA_DIR=/var/run/cc-metric-store
+
+MAX_OPEN_FILES=10000
+
+CONF_DIR=/etc/cc-metric-store
+
+CONF_FILE=/etc/cc-metric-store/cc-metric-store.json
+
+RESTART_ON_UPGRADE=true

scripts/cc-metric-store.init

@@ -0,0 +1,141 @@
+#! /usr/bin/env bash
+
+# chkconfig: 2345 80 05
+# description: ClusterCockpit metric store
+# processname: cc-metric-store
+# config: /etc/default/cc-metric-store
+# pidfile: /var/run/cc-metric-store.pid
+
+### BEGIN INIT INFO
+# Provides:          cc-metric-store
+# Required-Start:    $all
+# Required-Stop:     $remote_fs $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Short-Description: Start ClusterCockpit metric store at boot time
+### END INIT INFO
+
+
+PATH=/bin:/usr/bin:/sbin:/usr/sbin
+NAME=cc-metric-store
+DESC="ClusterCockpit metric store"
+DEFAULT=/etc/default/${NAME}.json
+
+CC_USER=clustercockpit
+CC_GROUP=clustercockpit
+CONF_DIR=/etc/cc-metric-store
+PID_FILE=/var/run/$NAME.pid
+DAEMON=/usr/sbin/$NAME
+CONF_FILE=${CONF_DIR}/cc-metric-store.json
+
+umask 0027
+
+if [ ! -x $DAEMON ]; then
+  echo "Program not installed or not executable"
+  exit 5
+fi
+
+. /lib/lsb/init-functions
+
+if [ -r /etc/default/rcS ]; then
+	. /etc/default/rcS
+fi
+
+# overwrite settings from default file
+if [ -f "$DEFAULT" ]; then
+	. "$DEFAULT"
+fi
+
+CC_OPTS="--config=${CONF_FILE}"
+
+function checkUser() {
+  if [ `id -u` -ne 0 ]; then
+  	echo "You need root privileges to run this script"
+  	exit 4
+  fi
+}
+
+case "$1" in
+  start)
+  checkUser
+	log_daemon_msg "Starting $DESC"
+
+	pid=`pidofproc -p $PID_FILE $NAME`
+	if [ -n "$pid" ] ; then
+		log_begin_msg "Already running."
+		log_end_msg 0
+		exit 0
+	fi
+
+	# Prepare environment
+	touch "$PID_FILE" && chown "$CC_USER":"$CC_GROUP" "$PID_FILE"
+
+  if [ -n "$MAX_OPEN_FILES" ]; then
+		ulimit -n $MAX_OPEN_FILES
+	fi
+
+	# Start Daemon
+	start-stop-daemon --start -b --chdir "$WORK_DIR" --user "$CC_USER" -c "$CC_USER" --pidfile "$PID_FILE" --exec $DAEMON -- $DAEMON_OPTS
+	return=$?
+	if [ $return -eq 0 ]
+	then
+	  sleep 1
+
+    # check if pid file has been written to
+	  if ! [[ -s $PID_FILE ]]; then
+	    log_end_msg 1
+	    exit 1
+	  fi
+
+		i=0
+		timeout=10
+		# Wait for the process to be properly started before exiting
+		until { cat "$PID_FILE" | xargs kill -0; } >/dev/null 2>&1
+		do
+			sleep 1
+			i=$(($i + 1))
+      if [ $i -gt $timeout ]; then
+			  log_end_msg 1
+			  exit 1
+			fi
+		done
+  fi
+  log_end_msg $return
+	;;
+  stop)
+  checkUser
+	log_daemon_msg "Stopping $DESC"
+
+	if [ -f "$PID_FILE" ]; then
+		start-stop-daemon --stop --pidfile "$PID_FILE" \
+			--user "$CC_USER" \
+			--retry=TERM/20/KILL/5 >/dev/null
+		if [ $? -eq 1 ]; then
+			log_progress_msg "$DESC is not running but pid file exists, cleaning up"
+		elif [ $? -eq 3 ]; then
+			PID="`cat $PID_FILE`"
+			log_failure_msg "Failed to stop $DESC (pid $PID)"
+			exit 1
+		fi
+		rm -f "$PID_FILE"
+	else
+		log_progress_msg "(not running)"
+	fi
+	log_end_msg 0
+	;;
+  status)
+	status_of_proc -p $PID_FILE $NAME $NAME && exit 0 || exit $?
+    ;;
+  restart|force-reload)
+	if [ -f "$PID_FILE" ]; then
+		$0 stop
+		sleep 1
+	fi
+	$0 start
+	;;
+  *)
+	log_success_msg "Usage: $0 {start|stop|restart|force-reload|status}"
+	exit 3
+	;;
+esac
+

scripts/cc-metric-store.spec

@@ -0,0 +1,62 @@
+Name:           cc-metric-store
+Version:        %{VERS}
+Release:        1%{?dist}
+Summary:        In-memory metric database from the ClusterCockpit suite
+
+License:        MIT
+Source0:        %{name}-%{version}.tar.gz
+
+BuildRequires:  go-toolset
+BuildRequires:  systemd-rpm-macros
+
+Provides:       %{name} = %{version}
+
+%description
+In-memory metric database from the ClusterCockpit suite
+
+%global debug_package %{nil}
+
+%prep
+%autosetup
+
+
+%build
+make
+
+
+%install
+# Install cc-metric-store
+make PREFIX=%{buildroot} BINDIR=%%{_sbindir} install
+# Integrate into system
+install -Dpm 0644 scripts/%{name}.service %{buildroot}%{_unitdir}/%{name}.service
+install -Dpm 0600 scripts/%{name}.config %{buildroot}%{_sysconfdir}/default/%{name}
+install -Dpm 0644 scripts/%{name}.sysusers %{buildroot}%{_sysusersdir}/%{name}.conf
+
+
+%check
+# go test should be here... :)
+
+%pre
+%sysusers_create_package scripts/%{name}.sysusers
+
+%post
+%systemd_post %{name}.service
+
+%preun
+%systemd_preun %{name}.service
+
+%files
+# Binary
+%attr(-,clustercockpit,clustercockpit) %{_sbindir}/%{name}
+# Config
+%dir %{_sysconfdir}/%{name}
+%attr(0600,clustercockpit,clustercockpit) %config(noreplace) %{_sysconfdir}/%{name}/%{name}.json
+# Systemd
+%{_unitdir}/%{name}.service
+%{_sysconfdir}/default/%{name}
+%{_sysusersdir}/%{name}.conf
+
+%changelog
+* Mon Mar 07 2022 Thomas Gruber - 0.1
+- Initial metric store implementation
+

scripts/cc-metric-store.sysusers

@@ -0,0 +1,2 @@
+#Type Name           ID GECOS                     Home directory           Shell
+u     clustercockpit -  "User for ClusterCockpit" /run/cc-metric-collector /sbin/nologin