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Changelog

All clj-otel-* module versions are released in lockstep to Clojars.

x.y.z versions listed below do not follow semantic versioning. Instead, development proceeds on a linear path where z increases for batches of incremental changes and y increases (with z reset to 0) when milestones are reached.

The changes are marked as follows:

  • [BREAK] is a breaking change in behaviour that requires user action to accommodate for when upgrading from a previous version

  • [ADD] is an addition of a new feature

  • [FIX] is a bug fix

  • [MAINT] is a maintenance change for general improvement and proactive avoidance of potential issues

Until version 1.0.0 there is a greater possibility of breaking changes.

0.x changes

0.2.2 (in progress)

  • [ADD] Opt-in feature bound context, a Clojure dynamic var that overrides the default context or parent parameter value for clj-otel functions. This feature is intended to simplify asynchronous code by eliminating explicit context passing. Existing code that uses the current context or explicit context parameter values is unaffected.

  • [FIX] Convert key names of entries added to OpenTelemetry attributes to snake_case. This applies to resources, spans and metrics.

  • [FIX] Do not transform key names of entries added to OpenTelemetry context or baggage.

  • [ADD] Function set-attribute-name-fn! to override setting of OpenTelemetry attribute key names.

  • [MAINT] Remove Jaeger exporters from examples, since they will be deprecated soon. The Jaeger Collector now accepts OTLP directly. See the Jaeger clients deprecation notice.

  • Bump deps:

    • [MAINT] OpenTelemetry contrib 1.26.0-alpha

    • [MAINT] gRPC 1.55.1

    • [MAINT] Various build deps

0.2.1 (2023-05-08)

  • [FIX] Use . instead of / in namespace qualified attribute names

  • [MAINT] Removed deprecated build dep build-clj

  • Bump deps:

    • [MAINT] OpenTelemetry 1.26.0

    • [MAINT] gRPC 1.54.1

    • [MAINT] Various build deps

0.2.0 (2023-04-10)

  • [ADD] Support for Metrics API

  • [ADD] Implementations of the following HTTP server metrics for use by applications not run with the OpenTelemetry instrumentation agent:

    • http.server.active_requests

    • http.server.duration

    • http.server.request.size

  • [BREAK] The parameters for function add-route-data! have changed, there is a new parameter to specify the HTTP request method.

  • [BREAK] The pattern for using clj-otel middleware and interceptors in applications has been revised. The revised pattern adds new middleware wrap-route, wrap-active-requests and wrap-metrics-by-route and interceptors route-interceptor, active-requests-interceptor and metrics-by-route-interceptors to capture matched routes in HTTP server spans and HTTP server metrics. The pattern also ensures all requests are recorded, including those which do not match any route.

  • [ADD] Module clj-otel-instrumentation-runtime-metrics to provide access to JVM runtime metrics instrumentation for applications not using the OpenTelemetry instrumentation agent.

  • [ADD] Aliases in examples

    • :metrics-* to control export of metrics

    • :logging-* to control application logging

  • Bump deps:

    • [MAINT] OpenTelemetry 1.25.0

      • [BREAK] When using autoconfiguration for a manually instrumented application, include the new JVM option "-Dotel.java.global-autoconfigure.enabled=true" or environment variable setting OTEL_JAVA_GLOBAL_AUTOCONFIGURE_ENABLED=true

      • Methods to statically set the server host name attribute on server spans have been removed, as static data is better represented as an OpenTelemetry resource.

        • [BREAK] The function add-server-name! has been removed.

        • [BREAK] The option :server-name has been removed from the middleware and interceptors for server span support.

      • [BREAK] Module clj-otel-extension-aws renamed to clj-otel-contrib-aws-xray-propagator

      • [BREAK] Module clj-otel-sdk-extension-aws renamed to clj-otel-contrib-aws-resources

      • [BREAK] Module clj-otel-sdk-extension-resources renamed to clj-otel-instrumentation-resources

    • [MAINT] gRPC 1.54.0

    • [MAINT] Various build deps

0.1.5 (2022-09-03)

  • Bump deps:

    • [MAINT] OpenTelemetry 1.17.0

    • [MAINT] gRPC 1.49.0

    • [MAINT] Various build deps

0.1.4 (2022-07-05)

  • [ADD] Support for including source code semantic attributes when creating spans. By default, attributes identifying the namespace, line number and source file path are included in spans created by with-span!, with-span-binding, and async-span.

  • [ADD] Update Pedestal HTTP server span support to always add route data to server spans

  • Bump deps:

    • [MAINT] OpenTelemetry 1.15.0

      • [BREAK] Modules clj-otel-exporter-otlp-* are merged to new module clj-otel-exporter-otlp

    • [MAINT] gRPC 1.47.0

    • [MAINT] Various build deps

0.1.3 (2022-05-22)

  • Bump deps:

    • [MAINT] OpenTelemetry 1.14.0

    • [MAINT] gRPC 1.46.0

    • [MAINT] Various build deps

0.1.2 (2022-04-13)

  • [ADD] Include ExceptionInfo data as attributes in exception span events, by default

  • [FIX] Update examples to use namespaced attributes for spans and events

  • Bump deps:

    • [MAINT] OpenTelemetry 1.13.0

      • [BREAK] The default value for autoconfiguration property otel.metrics.exporter has changed from none to otlp

    • [MAINT] Clojure 1.11.1

    • [MAINT] gRPC 1.45.1

    • [MAINT] Various build deps

0.1.1 (2022-03-13)

  • Bump deps:

    • [MAINT] OpenTelemetry 1.12.0

    • [MAINT] gRPC 1.45.0

    • [MAINT] Various build deps

0.1.0 (2022-02-27)

  • Initial release

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