Force export telemetry before shutting down with Spring Boot autostarter

[jasperkamerling]

Hello,

Is there a way to force export / flush OTLP HTTP telemetry (for example: io.opentelemetry.exporter.otlp.http.logs.OtlpHttpLogRecordExporter)?

I am running a Java Kubernetes job with the opentelemetry-spring-boot-starter that starts up and shutdown a couple second later. The metrics and logs of the application are not exported by the OTLP HTTP exporters because the period has not yet elapsed
This could be fixed by adding a sleep at the end of the job that is longer then the export interval + timeout, but that feels like a nasty solution.

I have already looked at the io.opentelemetry.exporter.otlp.http.logs.OtlpHttpLogRecordExporter#flush function but the exporter is async and the flush doesn't actually force the exporter to flush the in memory telemetry. The shutdown only seems to cancel all running http calls.

After some more digging I found that the AWS Lambda sdk does drain the propagators on shutdown: https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/javaagent-tooling/src/main/java/io/opentelemetry/javaagent/tooling/OpenTelemetryInstaller.java

Is there a reason that this is not just implemented for all agents?

[jasperkamerling]

This does work with the java bytebuddy agent. I will create an issue for this instead.