cc-metric-collector/collectors/nfsMetric.go

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Modularize the whole thing (#16) * Use channels, add a metric router, split up configuration and use extended version of Influx line protocol internally * Use central timer for collectors and router. Add expressions to router * Add expression to router config * Update entry points * Start with README * Update README for CCMetric * Formatting * Update README.md * Add README for MultiChanTicker * Add README for MultiChanTicker * Update README.md * Add README to metric router * Update main README * Remove SinkEntity type * Update README for sinks * Update go files * Update README for receivers * Update collectors README * Update collectors README * Use seperate page per collector * Fix for tempstat page * Add docs for customcmd collector * Add docs for ipmistat collector * Add docs for topprocs collector * Update customCmdMetric.md * Use seconds when calculating LIKWID metrics * Add IB metrics ib_recv_pkts and ib_xmit_pkts * Drop domain part of host name * Updated to latest stable version of likwid * Define source code dependencies in Makefile * Add GPFS / IBM Spectrum Scale collector * Add vet and staticcheck make targets * Add vet and staticcheck make targets * Avoid go vet warning: struct field tag `json:"..., omitempty"` not compatible with reflect.StructTag.Get: suspicious space in struct tag value struct field tag `json:"...", omitempty` not compatible with reflect.StructTag.Get: key:"value" pairs not separated by spaces * Add sample collector to README.md * Add CPU frequency collector * Avoid staticcheck warning: redundant return statement * Avoid staticcheck warning: unnecessary assignment to the blank identifier * Simplified code * Add CPUFreqCollectorCpuinfo a metric collector to measure the current frequency of the CPUs as obtained from /proc/cpuinfo Only measure on the first hyperthread * Add collector for NFS clients * Move publication of metrics into Flush() for NatsSink * Update GitHub actions * Refactoring * Avoid vet warning: Println arg list ends with redundant newline * Avoid vet warning struct field commands has json tag but is not exported * Avoid vet warning: return copies lock value. * Corrected typo * Refactoring * Add go sources in internal/... * Bad separator in Makefile * Fix Infiniband collector Co-authored-by: Holger Obermaier <40787752+ho-ob@users.noreply.github.com>
2022-01-25 15:37:43 +01:00
package collectors
import (
"encoding/json"
"fmt"
"log"
// "os"
"os/exec"
"strconv"
"strings"
"time"
lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
)
type NfsCollectorData struct {
current int64
last int64
}
type NfsCollector struct {
metricCollector
tags map[string]string
config struct {
Nfsutils string `json:"nfsutils"`
ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
}
data map[string]map[string]NfsCollectorData
}
func (m *NfsCollector) initStats() error {
cmd := exec.Command(m.config.Nfsutils, "-l")
cmd.Wait()
buffer, err := cmd.Output()
if err == nil {
for _, line := range strings.Split(string(buffer), "\n") {
lf := strings.Fields(line)
if len(lf) != 5 {
continue
}
if _, exist := m.data[lf[1]]; !exist {
m.data[lf[1]] = make(map[string]NfsCollectorData)
}
name := strings.Trim(lf[3], ":")
if _, exist := m.data[lf[1]][name]; !exist {
value, err := strconv.ParseInt(lf[4], 0, 64)
if err == nil {
x := m.data[lf[1]][name]
x.current = value
x.last = 0
m.data[lf[1]][name] = x
}
}
}
}
return err
}
func (m *NfsCollector) updateStats() error {
cmd := exec.Command(m.config.Nfsutils, "-l")
cmd.Wait()
buffer, err := cmd.Output()
if err == nil {
for _, line := range strings.Split(string(buffer), "\n") {
lf := strings.Fields(line)
if len(lf) != 5 {
continue
}
if _, exist := m.data[lf[1]]; !exist {
m.data[lf[1]] = make(map[string]NfsCollectorData)
}
name := strings.Trim(lf[3], ":")
if _, exist := m.data[lf[1]][name]; exist {
value, err := strconv.ParseInt(lf[4], 0, 64)
if err == nil {
x := m.data[lf[1]][name]
x.last = x.current
x.current = value
m.data[lf[1]][name] = x
}
}
}
}
return err
}
func (m *NfsCollector) Init(config json.RawMessage) error {
var err error
m.name = "NfsCollector"
m.setup()
// Set default mmpmon binary
m.config.Nfsutils = "/usr/sbin/nfsstat"
// Read JSON configuration
if len(config) > 0 {
err = json.Unmarshal(config, &m.config)
if err != nil {
log.Print(err.Error())
return err
}
}
m.meta = map[string]string{
"source": m.name,
"group": "NFS",
}
m.tags = map[string]string{
"type": "node",
}
// Check if mmpmon is in executable search path
_, err = exec.LookPath(m.config.Nfsutils)
if err != nil {
return fmt.Errorf("NfsCollector.Init(): Failed to find nfsstat binary '%s': %v", m.config.Nfsutils, err)
}
m.data = make(map[string]map[string]NfsCollectorData)
m.initStats()
m.init = true
return nil
}
func (m *NfsCollector) Read(interval time.Duration, output chan lp.CCMetric) {
if !m.init {
return
}
timestamp := time.Now()
m.updateStats()
for version, metrics := range m.data {
for name, data := range metrics {
if _, skip := stringArrayContains(m.config.ExcludeMetrics, name); skip {
continue
}
value := data.current - data.last
y, err := lp.New(fmt.Sprintf("nfs_%s", name), m.tags, m.meta, map[string]interface{}{"value": value}, timestamp)
if err == nil {
y.AddMeta("version", version)
output <- y
}
}
}
}
func (m *NfsCollector) Close() {
m.init = false
}