ClusterCockpit/cc-metric-collector
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Add error handling

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This commit is contained in:
Holger Obermaier 2022-02-04 16:11:56 +01:00
parent 76b69c59b4
commit f719f1915c
1 changed files with 53 additions and 18 deletions
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59
collectors/loadavgMetric.go
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@ -2,14 +2,25 @@ package collectors
import ( import (
"encoding/json" "encoding/json"
"fmt"
"io/ioutil" "io/ioutil"
"strconv" "strconv"
"strings" "strings"
"time" "time"
cclog "github.com/ClusterCockpit/cc-metric-collector/internal/ccLogger"
lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric" lp "github.com/ClusterCockpit/cc-metric-collector/internal/ccMetric"
) )
const LOADAVGFILE = `/proc/loadavg` //
// LoadavgCollector collects:
// * load average of last 1, 5 & 15 minutes
// * number of processes currently runnable
// * total number of processes in system
//
// See: https://www.kernel.org/doc/html/latest/filesystems/proc.html
//
const LOADAVGFILE = "/proc/loadavg"
type LoadavgCollectorConfig struct { type LoadavgCollectorConfig struct {
ExcludeMetrics []string `json:"exclude_metrics,omitempty"` ExcludeMetrics []string `json:"exclude_metrics,omitempty"`
@ -32,10 +43,17 @@ func (m *LoadavgCollector) Init(config json.RawMessage) error {
return err return err
} }
} }
m.meta = map[string]string{"source": m.name, "group": "LOAD"} m.meta = map[string]string{
"source": m.name,
"group": "LOAD"}
m.tags = map[string]string{"type": "node"} m.tags = map[string]string{"type": "node"}
m.load_matches = []string{"load_one", "load_five", "load_fifteen"} m.load_matches = []string{
m.proc_matches = []string{"proc_run", "proc_total"} "load_one",
"load_five",
"load_fifteen"}
m.proc_matches = []string{
"proc_run",
"proc_total"}
m.init = true m.init = true
return nil return nil
} }
@ -45,33 +63,50 @@ func (m *LoadavgCollector) Read(interval time.Duration, output chan lp.CCMetric)
if !m.init { if !m.init {
return return
} }
buffer, err := ioutil.ReadFile(string(LOADAVGFILE)) buffer, err := ioutil.ReadFile(LOADAVGFILE)
if err != nil { if err != nil {
if err != nil {
cclog.ComponentError(
m.name,
fmt.Sprintf("Read(): Failed to read file '%s': %v", LOADAVGFILE, err))
}
return return
} }
now := time.Now()
// Load metrics
ls := strings.Split(string(buffer), ` `) ls := strings.Split(string(buffer), ` `)
for i, name := range m.load_matches { for i, name := range m.load_matches {
x, err := strconv.ParseFloat(ls[i], 64) x, err := strconv.ParseFloat(ls[i], 64)
if err == nil { if err != nil {
cclog.ComponentError(
m.name,
fmt.Sprintf("Read(): Failed to convert '%s' to float64: %v", ls[i], err))
continue
}
_, skip = stringArrayContains(m.config.ExcludeMetrics, name) _, skip = stringArrayContains(m.config.ExcludeMetrics, name)
y, err := lp.New(name, m.tags, m.meta, map[string]interface{}{"value": float64(x)}, time.Now()) y, err := lp.New(name, m.tags, m.meta, map[string]interface{}{"value": x}, now)
if err == nil && !skip { if err == nil && !skip {
output <- y output <- y
} }
} }
}
// Process metrics
lv := strings.Split(ls[3], `/`) lv := strings.Split(ls[3], `/`)
for i, name := range m.proc_matches { for i, name := range m.proc_matches {
x, err := strconv.ParseFloat(lv[i], 64) x, err := strconv.ParseFloat(lv[i], 64)
if err == nil { if err != nil {
cclog.ComponentError(
m.name,
fmt.Sprintf("Read(): Failed to convert '%s' to float64: %v", lv[i], err))
continue
}
_, skip = stringArrayContains(m.config.ExcludeMetrics, name) _, skip = stringArrayContains(m.config.ExcludeMetrics, name)
y, err := lp.New(name, m.tags, m.meta, map[string]interface{}{"value": float64(x)}, time.Now()) y, err := lp.New(name, m.tags, m.meta, map[string]interface{}{"value": x}, now)
if err == nil && !skip { if err == nil && !skip {
output <- y output <- y
} }
}
} }
} }