Using autoconfigure for traces only?

[janhoy]

We only use the sdk for tracing, and have hardcoded OTEL_METRICS_EXPORTER=none and OTEL_LOGS_EXPORTER=none. Was hoping that I would be able to exclude opentelemetry-sdk-logs, opentelemetry-sdk-metrics, okhttp and kotlin* to reduce the weight of my dependencies, but appears that the autoconfigure extension actively uses classes that require these runtime?

I use

OpenTelemetrySdk otelSdk = AutoConfiguredOpenTelemetrySdk.initialize().getOpenTelemetrySdk();

I was hoping that OTEL_METRICS_EXPORTER=none would skip configuring metrics exporting alltogether. I also tried builder() to look for a way to disable through SDK instead of env.var, but found none.

What are my options, other than skipping autoconfigure and building my own code for the same, only for traces?

[janhoy]

Seems related to #2940 which is marked as fixed.

Here is my stack trace snippet when excluding the mentioned libs:

          => java.lang.NoClassDefFoundError: io/opentelemetry/api/logs/LoggerProvider
	at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.builder(AutoConfiguredOpenTelemetrySdk.java:39)
java.lang.NoClassDefFoundError: io/opentelemetry/api/logs/LoggerProvider
	at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.builder(AutoConfiguredOpenTelemetrySdk.java:39) ~[opentelemetry-sdk-extension-autoconfigure-1.21.0-alpha.jar:1.21.0-alpha]
	at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.initialize(AutoConfiguredOpenTelemetrySdk.java:31) ~[opentelemetry-sdk-extension-autoconfigure-1.21.0-alpha.jar:1.21.0-alpha]
	at org.apache.solr.opentelemetry.OtelTracerConfigurator.getTracer(OtelTracerConfigurator.java:70) ~[main/:?]

If I add an explicit dep on io.opentelemetry:opentelemetry-api-logs then I get

          => java.lang.NoClassDefFoundError: io/opentelemetry/sdk/metrics/SdkMeterProviderBuilder
	at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdkBuilder.<init>(AutoConfiguredOpenTelemetrySdkBuilder.java:67)
java.lang.NoClassDefFoundError: io/opentelemetry/sdk/metrics/SdkMeterProviderBuilder
	at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdkBuilder.<init>(AutoConfiguredOpenTelemetrySdkBuilder.java:67) ~[opentelemetry-sdk-extension-autoconfigure-1.21.0-alpha.jar:1.21.0-alpha]
	at io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk.builder(AutoConfiguredOpenTelemetrySdk.java:39) ~[opentelemetry-sdk-extension-autoconfigure-1.21.0-alpha.jar:1.21.0-alpha]

[jack-berg]

The autoconfigure code is pretty tightly intertwined with opentelemetry-sdk-logs, opentelemetry-sdk-metrics, and opentelemetry-sdk-traces. It would be quite tricky (and maybe impossible - idk, would need to think about different options for a while) to decouple those dependencies so that opentelemetry-sdk-logs and opentelemetry-sdk-metrics could be excluded. You shouldn't have to take dependencies on okhttp or kotlin* though - those are dependencies or exporters, which are opt in.