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feat(go): expose kafka consumer lag metrics

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lingniu
2026-07-02 19:23:01 +08:00
parent 41ff0bcef4
commit 1f4a23ff69
9 changed files with 63 additions and 3 deletions
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8
go/vehicle-gateway/cmd/history-writer/main.go
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@@ -94,6 +94,7 @@ func processHistoryMessage(ctx context.Context, logger interface {
defer cancel()
addWriterMetric(registry, "vehicle_history_kafka_messages_total", message, "received")
addWriterLagMetric(registry, message)
var env envelope.FrameEnvelope
if err := json.Unmarshal(message.Value, &env); err != nil {
addWriterMetric(registry, "vehicle_history_kafka_messages_total", message, "invalid_json")
@@ -122,6 +123,13 @@ func addWriterMetric(registry *metrics.Registry, name string, message kafka.Mess
registry.IncCounter(name, metrics.Labels{"topic": message.Topic, "status": status})
}
func addWriterLagMetric(registry *metrics.Registry, message kafka.Message) {
if registry == nil {
return
}
registry.SetKafkaLag("vehicle_history_kafka_lag", message.Topic, message.Partition, message.Offset, message.HighWaterMark)
}
type config struct {
KafkaBrokers []string
KafkaTopics []string