OpenTelemetry - java Instrumentation

This release targets the OpenTelemetry SDK 1.14.0.

Note that all artifacts other than io.opentelemetry.javaagent:opentelemetry-javaagent have the -alpha suffix attached to their version number, reflecting that they are still alpha quality and will continue to have breaking changes. Please see the VERSIONING.md for more details.

Migration notes:

• The opentelemetry-log4j-appender-2.16 artifact has been renamed to opentelemetry-log4j-appender-2.17
• The opentelemetry-log4j-context-data-2.16-autoconfigure artifact has been renamed to opentelemetry-log4j-context-data-2.17-autoconfigure
• Micrometer library instrumentation has been removed as it has been moved to the core repo and is now published under io.opentelemetry:opentelemetry-micrometer1-shim
• The rxjava javaagent instrumentation names for suppression have changed to rxjava
• AgentListener#beforeAgent() has been deprecated, as it is not expect to be needed by extensions authors
• ConfigPropertySource has been deprecated in favor of ConfigCustomizer
• Several changes in the Instrumentation API - RequestMetrics has been renamed to OperationMetrics - RequestListener has been renamed to OperationListener - ErrorCauseExtractor#extractCause() has been renamed to extract() - ContextCustomizer and RequestListener start()/end() methods have been renamed to onStart()/onEnd()
• The opentelemetry-javaagent-instrumentation-api artifact has been merged into the opentelemetry-javaagent-extension-api artifact

🌟 New javaagent instrumentation

• Add jboss-logmanager mdc support (#5842)
• Spring-kafka single record instrumentation (#5904)
• Add metrics instrumentation for grpc (#5923)
• Add vertx-kafka-client instrumentation (#5973, #5982)
• Hide the GC runtime metrics behind an experimental config flag (#5990)
• Add HikariCP connection pool metrics (#6003)

🌟 New library instrumentation

• Add metrics instrumentation for grpc (#5923)
• Add HikariCP library instrumentation (#6023)

📈 Enhancements

• Enable span suppression by SpanKey by default (#5779)
• record exception in dubbo high version (#5892)
• Introduce LocalRootSpan (replacing ServerSpan) (#5896)
• Add javaagent<->application context bridge for HttpRouteHolder (#5838)
• Exclude spring temporary type matching class loader (#5912)
• Load agent classes child first (#5950)
• Avoid looking up annotation types during type matching (#5906)
• Add an SPI for customizing Config just before it's set (#6010)

🛠️ Bug fixes

• Fix duplicate class error on Android build (#5882)
• Avoid npe in netty 4.1 instrumentation (#5902)
• Fix logging exporter autoconfiguration issue (#5928)
• fix NPE for commons-httpclient v3.1 (#5949)
• Exclude duplicate project classes from inst/ (#5957)
• Ignore known problematic jdbc wrappers (#5967)
• Fix default enabled for runtime and oshi metrics (#5989)
• Mitigate against another kafka leak (#6021)

🙇 Thank you

This release was possible thanks to the following contributors who shared their brilliant ideas and awesome pull requests:

@anuraaga @breedx-splk @chenjazz @chronosa @cuichenli @dgradecak @Enkelian @HughPowell @iNikem @IraSkyx @jack-berg @jprinet @kelystor @laurit @mateuszrzeszutek @pkgonan @shreya22-1998 @trask @tydhot @wallezhang