This release targets the OpenTelemetry SDK 1.45.0.

Note that many artifacts 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

In preparation for stabilizing HTTP library instrumentation soon:

• addAttributeExtractor methods in a few *TelemetryBuilder classes have been deprecated and renamed to addAttributesExtractor (which is how most of them were named already) (#12860)
• setEmitExperimental* methods in *TelemetryBuilder classes have been deprecated and moved to internal/experimental classes, see Javadoc @deprecated for exact relocation (#12847)
• ApacheHttpClient5* classes have been deprecated and renamed to ApacheHttpClient* (#12854)
• RatpackTelemetry* classes have been deprecated and split into RatpackClientTelemetry* and RatpackServerTelemetry* (#12853)
• SpringWebfluxTelemetry* classes have been deprecated and split into SpringWebfluxClientTelemetry* and SpringWebfluxServerTelemetry* (#12852)
• ArmeriaTelemetry* classes have been deprecated and split into ArmeriaClientTelemetry* and ArmeriaServerTelemetry* (#12851)
• *KtorClientTracing* and *KtorServerTracing* have been deprecated and renamed to *KtorClientTelemetry* and *KtorServerTelemetry* (#12855)
• Experimental opt-in attribute spring-webflux.handler.type was removed in favor of standard code.* attributes (#12887)

📈 Enhancements

• Map lettuce 5.1 db.namespace to db.name (unless using experimental database semconv stability opt-in) (#12609)
• Log4j2: add option to fill code attributes (#12592)
• Fill jvm.thread.state attribute for jvm.thread.count metric on jdk8 (#12724)
• Update Spring Scheduling code.* attribute extraction for latest release of Spring Scheduling (#12739)
• Add jctools classes to reflect-config.json for better native image support (#12736)
• Support Pulsar Client send message with transaction (#12731)
• Implement reading of simple key-value Logstash JSON Marker attributes (#12513)
• Add agent instrumentation for Ratpack 1.7+ (#12572)
• Added spring-scheduling.enabled property to spring-configuration-metadata.json (#12791)
• Remove class files from spring-boot-autoconfigure source jar (#12798)
• Updated Camel rules adding route.started, route.added, and thread pools' pool.core_size (#12763)
• Add database client metrics (when using experimental database semconv stability opt-in) (#12806, #12818)
• Add dynamodb instrumenter for aws v1_11 sdk (#12756)
• Remove public suffixes list from the agent (#10763)
• Add an option to disable automatic kafka interceptor configuration in spring starter (#12833)
• Add code attributes to spring webmvc controller spans (#12839)
• Hibernate 6: don't record error on NoResultException (#12879)
• Add support for missing spring list properties (#12819)
• Ktor: support setting custom spanNameExtractor (#12842) (#12850)
• Rename "db.client.connections.usage" to "db.client.connection.count" (when using experimental database semconv stability opt-in) (#12886)
• Support Struts 7.0 (#12935)
• Support latest Ktor release (#12937)

🛠️ Bug fixes

• Logback: don't make MDCPropertyMap of logging event immutable (#12718)
• Avoid exception when redisson address is null (#12883)
• Add close to fix CWE-404 (#12908)

🙇 Thank you

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

@akats7 @andrewj2048 @austinlparker @breedx-splk @coderzc @cuichenli @dao-jun @howan36 @jack-berg @jackshirazi @jaydeluca @jeanbisutti @johnrengelman @JonasKunz @KimDoubleB @kuisathaverat @larryluogit @laurit @LikeTheSalad @luigidemasi @micd @nityanandagohain @oldium @pepeshore @PeterF778 @sam9291 @shalk @SIMULATAN @steverao @SylvainJuge @the-vj @trask @zeitlinger