CODEWITHSUNDEEP
spring-bootspring-integrationmetricsmicroservices
pastafarian
pastafarian

Reputation: 1040

Write out Spring Boot metrics to Stdout or aggregator?

I have a java application written on top of Spring Boot and I can see the metrics being generated through the /metrics management API. I would like to filter the metrics that are being generated (based on metric prefix) and print to stdout OR send the selected metrics to a 3rd party aggregator (not the ones referenced here)

I tried the code suggested by this answer but it didn't result in any metrics being written to the stdout. This is what I added to my Application.java class:

@Bean
@ServiceActivator(inputChannel = "metricsChannel")
    public MessageHandler metricsHandler() {
        return System.out::println;
}

What is the best way to intercept the metrics on a preconfigured cadence so I can process and write them to stdout or publish them to an aggregator?

Thanks.

Upvotes: 2

Views: 1315

Answers (1)

Artem Bilan
Artem Bilan

Reputation: 121272

Looks like it's a bug in the Spring Boot: https://github.com/spring-projects/spring-boot/issues/5517.

We have to declare something like this ourselves as a workaround:

@Bean
public MessageChannel metricsChannel() {
    return new DirectChannel();
}

@Bean
@ExportMetricWriter
public MessageChannelMetricWriter messageChannelMetricWriter() {
    return new MessageChannelMetricWriter(metricsChannel());
}

@Bean
@ServiceActivator(inputChannel = "metricsChannel")
public MessageHandler metricsHandler() {
    return System.out::println;
}

Upvotes: 1

Related Questions