ClusterCockpit/cc-metric-collector
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Read unit of values from /proc/meminfo (#68)

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Thomas Gruber 2022-03-31 11:56:31 +02:00 committed by GitHub
parent 50479f9325
commit 2a014b6fba
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 42 additions and 10 deletions
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52
collectors/memstatMetric.go
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@ -40,8 +40,13 @@ type MemstatCollector struct {
sendMemUsed bool
}
func getStats(filename string) map[string]float64 {
stats := make(map[string]float64)
type MemstatStats struct {
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 +60,18 @@ 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
stats[strings.Trim(linefields[0], ":")] = MemstatStats{
value: v,
unit: linefields[4],
}
}
}
}
@ -78,7 +89,7 @@ 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 +162,51 @@ 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 {
if bufVal, buffers := stats["Buffers"]; buffers {
if cacheVal, cached := stats["Cached"]; cached {
memUsed = totalVal - (freeVal + bufVal + cacheVal)
memUsed = totalVal.value - (freeVal.value + bufVal.value + cacheVal.value)
if len(totalVal.unit) > 0 {
unit = totalVal.unit
} else if len(freeVal.unit) > 0 {
unit = freeVal.unit
} else if len(bufVal.unit) > 0 {
unit = bufVal.unit
} else if len(cacheVal.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
}
}