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feat_: add ability to process prometheus metrics in telemetry client
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,123 @@ | ||
| package telemetry | ||
|
|
||
| import ( | ||
| "log" | ||
|
|
||
| "github.com/prometheus/client_golang/prometheus" | ||
| ) | ||
|
|
||
| type MetricType int | ||
|
|
||
| const ( | ||
| _ MetricType = iota | ||
| CounterType | ||
| GaugeType | ||
| ) | ||
|
|
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| type ToTelemetryRequest func(payload MetricPayload) | ||
|
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| type MetricPayload struct { | ||
| Labels map[string]string | ||
| Name string | ||
| Value float64 | ||
| } | ||
|
|
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| type Metric struct { | ||
| typ MetricType | ||
| labels map[string]string | ||
| toTelemetryRequest ToTelemetryRequest | ||
| } | ||
|
|
||
| type PrometheusMetrics struct { | ||
| metrics map[string]Metric | ||
| } | ||
|
|
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| func NewPrometheusMetrics() *PrometheusMetrics { | ||
| return &PrometheusMetrics{ | ||
| metrics: make(map[string]Metric), | ||
| } | ||
| } | ||
|
|
||
| func (pm *PrometheusMetrics) Register(name string, typ MetricType, labels prometheus.Labels, toTelemetryRequest ToTelemetryRequest) { | ||
| pm.metrics[name] = Metric{typ, labels, toTelemetryRequest} | ||
| } | ||
|
|
||
| func (pm *PrometheusMetrics) Snapshot() { | ||
| gatherer := prometheus.DefaultGatherer | ||
| metrics, err := gatherer.Gather() | ||
| if err != nil { | ||
| log.Fatalf("Failed to gather metrics: %v", err) | ||
| } | ||
|
|
||
| for _, mf := range metrics { | ||
| metric, ok := pm.metrics[*mf.Name] | ||
| if !ok { | ||
| continue | ||
| } | ||
| if len(mf.GetMetric()) == 0 { | ||
| continue | ||
| } | ||
|
|
||
| for _, m := range mf.GetMetric() { | ||
| var p MetricPayload | ||
| if metric.labels != nil { | ||
| matchCnt := len(metric.labels) | ||
|
|
||
| for name, value := range metric.labels { | ||
| for _, label := range m.GetLabel() { | ||
| if name == *label.Name && value == *label.Value { | ||
| matchCnt-- | ||
| } | ||
| } | ||
| } | ||
|
|
||
| if matchCnt > 0 { | ||
| continue | ||
| } | ||
| } | ||
|
|
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| labelMap := make(map[string]string) | ||
|
|
||
| for _, l := range m.GetLabel() { | ||
| labelMap[*l.Name] = *l.Value | ||
| } | ||
|
|
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| switch metric.typ { | ||
| case CounterType: | ||
|
|
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| p = MetricPayload{ | ||
| Name: *mf.Name, | ||
| Value: *m.Counter.Value, | ||
| Labels: labelMap, | ||
| } | ||
|
|
||
| /*data, err := json.MarshalIndent(map[string]interface{}{"name": *mf.Name, "value": m.Counter.Value, "labels": m.GetLabel()}, "", " ") | ||
| if err != nil { | ||
| fmt.Println("failed to marshal") | ||
| } | ||
| fmt.Println("Data: ", string(data))*/ | ||
| case GaugeType: | ||
| p = MetricPayload{ | ||
| Name: *mf.Name, | ||
| Value: *m.Gauge.Value, | ||
| Labels: labelMap, | ||
| } | ||
|
|
||
| /*fmt.Println(m.String()) | ||
| data, err := json.MarshalIndent(map[string]interface{}{"name": *mf.Name, "value": m.Gauge.Value}, "", " ") | ||
| if err != nil { | ||
| fmt.Println("failed to marshal") | ||
| } | ||
| fmt.Println("Data: ", string(data))*/ | ||
| } | ||
|
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| metric.toTelemetryRequest(p) | ||
| } | ||
| } | ||
|
|
||
| } | ||
|
|
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| func (pm *PrometheusMetrics) Get(name string) { | ||
|
|
||
| } |
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