shishengliang/lingniu-vehicle-ingest
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feat(go): expose realtime store latency histogram

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lingniu
2026-07-03 19:05:58 +08:00
parent afb301cb7a
commit 3900144ea4
6 changed files with 28 additions and 8 deletions
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15
go/vehicle-gateway/cmd/realtime-api/main.go
View File

@@ -249,6 +249,8 @@ type storeMetricUpdater struct {
registry *metrics.Registry
}
var realtimeStoreUpdateDurationBucketsMS = []float64{1, 5, 10, 25, 50, 100, 250, 500, 1000, 5000}
func (u storeMetricUpdater) Update(ctx context.Context, env envelope.FrameEnvelope) error {
if u.delegate == nil {
return nil
@@ -261,16 +263,15 @@ func (u storeMetricUpdater) Update(ctx context.Context, env envelope.FrameEnvelo
status = "error"
}
if u.registry != nil {
u.registry.IncCounter("vehicle_realtime_store_updates_total", metrics.Labels{
labels := metrics.Labels{
"store": u.store,
"protocol": string(env.Protocol),
"status": status,
})
u.registry.SetGauge("vehicle_realtime_store_update_duration_ms", metrics.Labels{
"store": u.store,
"protocol": string(env.Protocol),
"status": status,
}, float64(elapsed.Milliseconds()))
}
elapsedMS := float64(elapsed.Milliseconds())
u.registry.IncCounter("vehicle_realtime_store_updates_total", labels)
u.registry.SetGauge("vehicle_realtime_store_update_duration_ms", labels, elapsedMS)
u.registry.ObserveHistogram("vehicle_realtime_store_update_duration_ms_histogram", labels, realtimeStoreUpdateDurationBucketsMS, elapsedMS)
}
return err
}

3
go/vehicle-gateway/cmd/realtime-api/main_test.go
View File

@@ -179,6 +179,9 @@ func TestStoreMetricUpdaterRecordsStoreUpdateResults(t *testing.T) {
for _, want := range []string{
`vehicle_realtime_store_updates_total{protocol="JT808",status="ok",store="redis"} 1`,
`vehicle_realtime_store_update_duration_ms{protocol="JT808",status="ok",store="redis"}`,
`vehicle_realtime_store_update_duration_ms_histogram_bucket{le="+Inf",protocol="JT808",status="ok",store="redis"} 1`,
`vehicle_realtime_store_update_duration_ms_histogram_count{protocol="JT808",status="ok",store="redis"} 1`,
`vehicle_realtime_store_update_duration_ms_histogram_sum{protocol="JT808",status="ok",store="redis"}`,
} {
if !strings.Contains(text, want) {
t.Fatalf("store update metric missing %s:\n%s", want, text)