[RIP-46] Add logging metrics exporter

[ShadowySpirits]

For now, we need an Opentelemetry collector or Prometheus to explore metrics. It's useful to add logging exporter for debugging purposes.

[Bughue]

I would like to give it a try, can you assign this issue to me

[Bughue]

For now, we need an Opentelemetry collector or Prometheus to explore metrics. It's useful to add logging exporter for debugging purposes.

I found that there is already a rocketmq-exporter(https://github.com/apache/rocketmq-exporter), what's the difference?
Do they have different purposes?

[ShadowySpirits]

For now, we need an Opentelemetry collector or Prometheus to explore metrics. It's useful to add logging exporter for debugging purposes.

I found that there is already a rocketmq-exporter(https://github.com/apache/rocketmq-exporter), what's the difference? Do they have different purposes?

This wiki Observability Improvement for RocketMQ can answer your questions.

[Bughue]

Observability Improvement for RocketMQ

Got it~Does this issue include all of the following tasks? Where should I start

We split this proposal into several tasks:
Task1: Define the specification of metric.
Task2: Implement metrics collector and exporter framework in broker and proxy.
Task3: Develop metrics for broker and proxy.
Task4: Backport new metrics to rocketmq-exporter.
Task5: Other ecosystem work, like document, Grafana dashboard template, etc.

[ShadowySpirits]

No, this issue aims to add a log exporter. Currently, we have otlp exporter and Prometheus exporter.

rocketmq/common/src/main/java/org/apache/rocketmq/common/BrokerConfig.java

Lines 346 to 349 in 5744721

	public enum MetricsExporterType {
	DISABLE(0),
	OTLP_GRPC(1),
	PROM(2);

[Bughue]

No, this issue aims to add a log exporter. Currently, we have otlp exporter and Prometheus exporter.

rocketmq/common/src/main/java/org/apache/rocketmq/common/BrokerConfig.java

Lines 346 to 349 in 5744721

	public enum MetricsExporterType {
	DISABLE(0),
	OTLP_GRPC(1),
	PROM(2);

ok~thx

[ShadowySpirits]

Closed as completed via #6234