Spring boot 3 support for auto-configure

[swaroopar]

Hello All,

In this documentation page, it mentions to use opentelemetry-spring-boot-starter if we wish to use all features.
But the spring-boot-auto-configure mentions that only spring-boot 2 is supported.

My issue is that i cannot get the logs (using logback) exported.
I used only 'opentelemetry-spring-boot-starter' dependency and the and the solution mentioned in #9819, but still no logs were exported. Only traces and metrics were exported.

<dependency>
            <groupId>io.opentelemetry.instrumentation</groupId>
            <artifactId>opentelemetry-spring-boot-starter</artifactId>
            <version>1.32.0-alpha</version>
        </dependency>

and enviroment variable OTEL_LOGS_EXPORTER=otlp

Could you please let me know if I must explicitly add all dependencies if I wish to use the collector with spring-boot version 3?

Thank you for all the great work.

[laurit]

Environment variables like OTEL_LOGS_EXPORTER only work when opentelemetry is set up via autoconfigure extension https://github.com/open-telemetry/opentelemetry-java/blob/main/sdk-extensions/autoconfigure/README.md Spring boot starter does not do that, but that shouldn't be the issue because it enables the logging by default. You probably need to add OpenTelemetryAppender to your logging configuration, see https://github.com/open-telemetry/opentelemetry-java-instrumentation/blob/main/instrumentation/spring/spring-boot-autoconfigure/src/testLogbackAppender/resources/logback-test.xml

[swaroopar]

@laurit thank you for looking into my issue. I tried your suggestion but the logs are still not reaching the collector.

I made the following changes to maven dependencies and logback config - swaroopar/osc@dc0f223

If I shutdown the collector docker container, I only see warnings for traces and metrics. Nothing for logs.

10:36:55.560 [OkHttp http://localhost:4317/...] ERROR i.o.e.i.grpc.OkHttpGrpcExporter []- Failed to export spans. The request could not be executed. Full error message: closed
10:37:30.518 [OkHttp http://localhost:4317/...] ERROR i.o.e.i.grpc.OkHttpGrpcExporter []- Failed to export metrics. The request could not be executed. Full error message: Failed to connect to localhost/127.0.1.1:4317
1

P.S - could not use the latest version since I have to use same versions of all dependencies. Also the version mentioned in the documentation actually does not exist on maven central - https://opentelemetry.io/docs/instrumentation/java/automatic/spring-boot/#configuration
Updated all required dependencies to the latest version in POM.

Please let me know if i'm still missing something.

[swaroopar]

@laurit after some debugging I saw that only the NoopLogRecordProcessor was getting activated. So added the below dependency and also retained all other otel dependencies with version1.32.0. Now the logger seem to be activated but fails with the below error.

<dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-exporter-otlp-logs</artifactId>
            <version>1.26.0-alpha</version>
        </dependency>

Exception in thread "BatchLogRecordProcessor_WorkerThread-1" java.lang.NoSuchMethodError: 'long io.opentelemetry.sdk.logs.data.LogRecordData.getEpochNanos()'
	at io.opentelemetry.exporter.internal.otlp.logs.LogMarshaler.create(LogMarshaler.java:49)
	at io.opentelemetry.exporter.internal.marshal.MarshalerUtil.groupByResourceAndScope(MarshalerUtil.java:67)
	at io.opentelemetry.exporter.internal.otlp.logs.ResourceLogsMarshaler.groupByResourceAndScope(ResourceLogsMarshaler.java:98)
	at io.opentelemetry.exporter.internal.otlp.logs.ResourceLogsMarshaler.create(ResourceLogsMarshaler.java:38)
	at io.opentelemetry.exporter.internal.otlp.logs.LogsRequestMarshaler.create(LogsRequestMarshaler.java:33)
	at io.opentelemetry.exporter.otlp.logs.OtlpGrpcLogRecordExporter.export(OtlpGrpcLogRecordExporter.java:55)
	at io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor$Worker.exportCurrentBatch(BatchLogRecordProcessor.java:312)
	at io.opentelemetry.sdk.logs.export.BatchLogRecordProcessor$Worker.run(BatchLogRecordProcessor.java:229)
	at java.base/java.lang.Thread.run(Thread.java:1583)

[swaroopar]

Adding this specific dependency is needed for spring-boot in addition to the starter

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>io.opentelemetry</groupId>
            <artifactId>opentelemetry-bom</artifactId>
            <version>1.32.0</version>
            <type>pom</type>
        </dependency>
    </dependencies>
</dependencyManagement>