v2.1.21 - Trace Helpers and Scala Future Chaining Deprecation

New Features

• We got a new Kamon.span function that simplifies creating Spans and automatically handle Scala Futures and CompletionStage instances, ensuring that Spans will only be finished after the async computation is done. Contributed by @ivantopo via #1033.

Deprecations

• We deprecated the Future Chaining instrumentation introduced with Kamon 2.x. There is more info at #1021. Contributed by @ivantopo via #1034.

v2.1.20 Bug fix release

• kamon-redis: Fix #1027 by changing instrumentation so it does not use Jedis classes during loading, which leads to failures when Jedis is not on the classpath. Contributed by @SimunKaracic and @ivantopo via #1028 .

v2.1.19 Support for Jedis Redis client

⚠️ 🚨 Jump straight to Kamon 2.1.20! This version has a bug when Jedis is not on the classpath!

• kamon-core: Introduce span reporting delay, allowing users to keep Spans in memory for a period of time. Contributed by @ivantopo via #1026
• kamon-akka-http: Fix #1014. Contributed by @SimunKaracic via #1018
• kamon-sqlite: Fix #1008, and update sqlite version. Contributed by @SimunKaracic and @dpsoft via #1023
• kamon-redis: New module, adding tracing for the popular Jedis library. Contributed by @SimunKaracic via #1022

v2.1.18 Maintenance release

• kamon-prometheus: It's now possible to generate gauge metrics from distribution based metrics. Contributed by @pnerg via #1011
• kamon-core: Add filtering to context tag propagation. Contributed by @pnerg via #1015
• kamon-status-page: Fix status page indicator. Contributed by @the-overengineer via #999.
• kamon-system-metrics: Fix typos in metric description. Contributed via #1007 by @moznion
• kamon-core: Added resetDistribution method to RangleSampler. Contributed by @SimunKaracic via #1017
• kamon-mongo: Update to driver version 4.x. If you're using kamon-mongo (instead of the kamon-bundle), beware. That package now supports only the 4.x.x versions of mongo drivers. For older version of drivers, please use kamon-mongo-legacy. Contributed by @SimunKaracic via #1001
• kamon-mongo-legacy: new instrumentation module for older versions of mongo drivers.
  https://github.com/kamon-io/Kamon/tree/master/instrumentation/kamon-mongo-legacy
  Contributed by @SimunKaracic via #1001
• kamon-core: Added flag to disable starting new spans in client instrumentation when there is no current span. Contributed by @SimunKaracic via #1006

v2.1.17 - Support for Tapir with Akka HTTP Backend

New Instrumentation

• kamon-tapir: The new Tapir instrumentation can use Tapir's Endpoint definition to give a proper operation name to Spans created by the Akka HTTP Server instrumentation. Contributed by @SimunKaracic via #1000.

v2.1.16 - Sending Kamon Traces to OpenTelemetry

• kamon-system-metrics: Update oshi dependecy to latest version. Fixed #981
• kamon-opentelemetry: New reporter contributed by @pnerg via #977 🎉. Supports exporting traces according to OTLP.
• kamon-core: various fixes to the new w3c context propagation. Closed #986 and #985 via #987 and #988. Contributed by @pnerg.
• kamon-status-page: fixed scroll offset and guidance for users with invalid API key. Contributed by @the-overengineer via #976 and #969
• kamon-newrelic: update dependencies, fixing #995 in the process.

v2.1.15 - Maintenance release

• kamon-apm-reporter: Add "agent" to ProtoBuf message "NodeIdentity". Contributed by @dsrkoc via #980
• kamon-core: Fix invalid SpanID with W3C propagation #975. Contirbuted by @duxet via #978

v2.1.14 - Maintenance release

Various fixes and initial W3C TraceContext support

• kamon-core: add new implementation of context storage that allows 'Scope' to be closed from a different thread. Contributed by @jatcwang via #961
• kamon-core: add W3C TraceContext propagation. Contributed by @duxet via #949
• kamon-play: allow defining custom router name generators. Contributed by @yarosman via #926
• kamon-prometheus: PushGateway reporter is now initialized with 5 year stale period. Contributed by @asutalo via #822
• kamon-newrelic: update dependencies, fixing #964. Contributed by @SimunKaracic via #966
• kamon-apm-reporter: read kamon agent identifier from settings. Contributed by @dsrkoc via #971
• kamon-logback: force logback instrumentation to be loaded first. Contributed by @SimunKaracic via #970
• kamon-akka: capture all router metrics by default. Contributed by @SimunKaracic via #972
• miscellaneous: update kanela version to 1.0.9. Contributed by @SimunKaracic via #970

v2.1.13 - Introducing beta Spring MVC and WebClient support

Introducing beta Spring MVC and WebClient support

• kamon-spring: added new instrumentation for Spring MVC and WebClient. Please try it out and report any issues! Contributed by @SimunKaracic via #948
• kamon-kafka: handle case where consumer has no group.id set. Contributed by @mladens via #947
• kamon-datadog: fix failing test case. Contributed by @benwaffle via #943
• kamon-akka-http: fix comments in reference.conf. Contributed by @benwaffle via #942
• kamon-logback: stop logging empty values. Fixes #918. Contributed by @SimunKaracic via #960
• kamon-akka: revert passivate tracking, fixing #944. Contributed by @SimunKaracic via #959
• kamon-elasticsearch: update test dependency, fixing failing test on github. Contributed by @hughsimpson via #952
• kamon-jaeger: convert and send kamon links to Jaeger. Contributed by @hughsimpson via #952
• kamon-core: redesign the kamon status page. Contributed by @the-overengineer via #953
• kamon-cassandra: add tracing support for driver version 4.x, fixing #798. Contributed by @ivantopo via #954

v2.1.12 - Maintenance release

Maintenance release with various bugfixes

• kamon-prometheus: Add new setting "kamon.prometheus.embedded-server.metrics-path" which default to "/metrics", to keep backwards compatibility with previous Kamon versions. Contributed via #938 by @SimunKaracic
• kamon-akka-http: Wrap VersionFiltering in try-catch, so we don't crash when there's no akka-http on the classpath. Contributed via #939 by @SimunKaracic