Fixed

• [breaking] avoid deadlock when entering a span (#251)

Other

• Upgrade to OpenTelemetry 0.32, see upstream changelog for details (#258)
• mimimize package size (#252)

Added

• allow OpenTelemetry context access with SpanRef (#234)
• add event-counting filtering layer for spans (#228)
• publicly export SetParentError

Fixed

• fix panic in multithreaded follows-from

Other

• Remove unwanted dependency on opentelemetry sdk crate (#241)
• update README.md links to use the latest version (#239)
• remove thiserror and unused dependencies (#238)

Added

• Add configuration for including target in spans (#222)

Changed

• OpenTelemetry context activation (#202)
  • Trace ID and span ID can be obtained from OtelData via dedicated functions. Note that these
    will be available only if the context has already been built. (#233)
• Correctly track entered and exited state for timings (#212)
• Slightly improve error message on version mismatch (#211)
• Remove Lazy for thread_local static (#215)
• Update description of special fields and semantic conventions

Breaking Changes

• The attributes code.filepath, code.lineno, and code.namespace have been renamed to
  code.file.path, and code.line.number, and code.module.name, to align with the opentelemetry
  semantic conventions for code. (#225)
• Upgrade from opentelemetry to 0.31.0. Refer to the upstream
  changelog
  for more information. (#230)
• Hold onto MetricsProvider in MetricsLayer (#224)
• The attribute otel.status_message was changed to otel.status_description to align with the
  opentelemetry semantic conventions for code. (#209)
• Remove the metrics_gauge_unstable feature.

Breaking Changes

• Upgrade from opentelemetry 0.29.0 to 0.30.0. Refer to the upstream
  changelog
  for more information.

Added

• Add OpenTelemetrySpanExt::add_event and OpenTelemetrySpanExt::add_event_with_timestamp
  functions to allow adding OpenTelemetry events directly to a tracing::Span, enabling the use of dynamic attribute keys
  and custom event timestamps.

Breaking Changes

• Upgrade from opentelemetry 0.29.0 to 0.30.0. Refer to the upstream changelog for more information.

Added

• Add OpenTelemetrySpanExt::add_event and OpenTelemetrySpanExt::add_event_with_timestamp functions to allow adding OpenTelemetry events directly to a tracing::Span, enabling the use of dynamic attribute keys and custom event timestamps.

What's Changed

• doc: tracked inactivity default by @aimericsr in #195
• chore: update from opentelemetry-sdk 0.28.0 to 0.29.0 by @alessandrobologna in #196
• chore: prepare for release 0.30.0 by @tisonkun in #197

Breaking Changes

• Upgrade from opentelemetry 0.28.0 to 0.29.0. Refer to the upstream changelog for more information.

What's Changed

• Fix the example installing OpenTelemetryLayer into a global subscriber by @mzabaluev in #175
• Update dependencies by @djc in #187
• Use renamed WASI target by @djc in #189
• use the tracing event name as the otel event name by @zzlk in #188
• Update opentelemetry to 0.28 by @cschramm in #193

What's Changed

• Reduce locking in the implementation of Layer::on_close by @mzabaluev in #173
• adding support for setting the status of the span through SpanExt by @webfinesse in #176
• Add level metadata to spans by @mTsBucy1 in #182
• chore: update opentelemetry dependencies to 0.27.0 by @MathiasPius in #184

Breaking Changes

• Upgrade to opentelemetry 0.26. Refer to the upstream
  changelog
  for more information.

Breaking Changes

• Upgrade to opentelemetry 0.26. Refer to the upstream changelog for more information.

What's Changed

• Upgrade to opentelemetry 0.25 by @ymgyt in #164

Breaking Changes

• Upgrade to opentelemetry 0.25. Refer to the upstream changelog for more information.

What's Changed

• chore: fix on_close() comment by @Oliboy50 in #148
• Invalidate sample decision on set parent fix #150 by @rohitmittapalli in #153
• Upgrade to opentelemetry 0.24 by @djc in #155

Breaking Changes

• Upgrade to opentelemetry 0.24. Refer to the upstream changelog for more information.

Fixed

• Invalidate sample decision on set parent (#153)
• chore: fix on_close() comment (#148)

Breaking Changes

• Upgrade to opentelemetry 0.23. Refer to the upstream changelog for more information.

Added

• Added gauge metrics (#129)

Fixed

• Fixed compilation on WASI targets (#147)
• Set span end time when it exists (#124)

Breaking Changes

• Upgrade to opentelemetry 0.22. Refer to the upstream changelog for more information. In particular, i64 histograms will silently downgrade to key/value exports.

Breaking Changes

• Upgrade to v0.21.0 of opentelemetry For list of breaking changes in OpenTelemetry, see the v0.21.0 changelog.
• Update MSRV to require Rust 1.65+, as opentelemetry requires it now. (#68)

Fixed

• WASM Support (#57)
• Fix potential deadlock (#59)

Thanks to @jesseditson, @AsmPrgmC3, and @rthomas for contributing to this release!

ab9415a

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Verified Learn about vigilant mode .

API

Added

#1410 Add experimental synchronous gauge. This is behind the feature flag, and can be enabled by enabling the feature otel_unstable for opentelemetry crate.

#1410 Guidelines to add new unstable/experimental features.

Changed

• Modified AnyValue.Map to be backed by HashMap instead of custom OrderMap, which internally used IndexMap. There was no requirement to maintain the order of entries, so moving from IndexMap to HashMap offers slight performance gains, and avoids IndexMap dependency. This affects body and attributes of LogRecord. #1353

• Add TextMapCompositePropagator #1373

• Turned off events for NoopLogger to save on operations #1455

Removed

• Removed OrderMap type as there was no requirement to use this over regular HashMap. #1353

• Remove API for Creating Histograms with signed integers. #1371

• Remove global::shutdown_meter_provider, use SdkMeterProvider::shutdown directly instead ( #1412 ).

SDK

Deprecated

• XrayIdGenerator in the opentelemetry-sdk has been deprecated and moved to version 0.10.0 of the opentelemetry-aws crate.

Added

#1410 Add experimental synchronous gauge

#1471 Configure batch log record processor via OTEL_BLRP_* environment variables and via OtlpLogPipeline::with_batch_config

#1503 Make the documentation for In-Memory exporters visible.

#1526 Performance Improvement : Creating Spans and LogRecords are now faster, by avoiding expensive cloning of Resource for every Span/LogRecord.

Changed

Breaking #1313 #1350 Changes how Span links/events are stored to achieve performance gains. See below for details:

Behavior Change : When enforcing max_links_per_span , max_events_per_span from SpanLimits , links/events are kept in the first-come order. The previous "eviction" based approach is no longer performed.

Breaking Change Affecting Exporter authors :

SpanData now stores links as SpanLinks instead of EvictedQueue where SpanLinks is a struct with a Vec of links and dropped_count .

SpanData now stores events as SpanEvents instead of EvictedQueue where SpanEvents is a struct with a Vec of events and dropped_count .

Breaking Remove TextMapCompositePropagator #1373 . Use TextMapCompositePropagator in opentelemetry API.

#1375 Fix metric collections during PeriodicReader shutdown

Breaking #1480 Remove fine grained BatchConfig configurations from BatchLogProcessorBuilder and BatchSpanProcessorBuilder . Use BatchConfigBuilder to construct a BatchConfig instance and pass it using BatchLogProcessorBuilder::with_batch_config or BatchSpanProcessorBuilder::with_batch_config .

Breaking #1480 Remove mutating functions from BatchConfig , use BatchConfigBuilder to construct a BatchConfig instance.

Breaking #1495 Remove Batch LogRecord&Span Processor configuration via non-standard environment variables. Use the following table to migrate from the no longer supported non-standard environment variables to the standard ones.

No longer supported Standard equivalent

OTEL_BLRP_SCHEDULE_DELAY_MILLIS OTEL_BLRP_SCHEDULE_DELAY

OTEL_BLRP_EXPORT_TIMEOUT_MILLIS OTEL_BLRP_EXPORT_TIMEOUT

OTEL_BSP_SCHEDULE_DELAY_MILLIS OTEL_BSP_SCHEDULE_DELAY

OTEL_BSP_EXPORT_TIMEOUT_MILLIS OTEL_BSP_EXPORT_TIMEOUT

Breaking 1455 Make the LoggerProvider Owned

• Logger now takes an Owned Logger instead of a Weak<LoggerProviderInner>

• LoggerProviderInner is no longer pub (crate)

• Logger.provider() now returns &LoggerProvider instead of an Option<LoggerProvider>

1519 Performance improvements when calling Counter::add() and UpDownCounter::add() with an empty set of attributes (e.g. counter.Add(5, &[]) )

Fixed

• #1481 Fix error message caused by race condition when using PeriodicReader

Added

• Ability to produce measurement with attributes (#43)

Breaking Changes

• MetricsLayer is now generic over the its Subscriber impl to support per-layer filtering (#43)

Fixed

• Trace IDs not matching when propagating invalid contexts (#55)

Thanks to @ymgyt and @hdost for contributing to this release!

Added

• Add OpenTelemetrySpanExt::set_attribute function (#34)

Breaking Changes

• Upgrade to v0.20.0 of opentelemetry (#36) For list of breaking changes in OpenTelemetry, see the v0.20.0 changelog.

Thanks to @ymgyt, @mladedav, @shaun-cox, and @Protryon for contributing to this release!

Breaking Changes

• Upgrade to v0.19.0 of opentelemetry (#12) For list of breaking changes in OpenTelemetry, see the v0.19.0 changelog.
• Update MSRV to require Rust 1.60+, as opentelemetry requires it now (#12)

Thanks to @jaysonsantos, @briankung, and @humb1t for contributing to this release!

Breaking Changes

• Upgrade to v0.18.0 of opentelemetry ([#2303]) For list of breaking changes in OpenTelemetry, see the v0.18.0 changelog.

Fixed

• on_event respects event's explicit parent ([#2296])

Thanks to @wprzytula for contributing to this release!

This release adds optional support for recording std::error::Errors using [OpenTelemetry's semantic conventions for exceptions][exn-semconv].

Added

• Layer::with_exception_fields to enable emitting exception.message and exception.backtrace semantic-convention fields when an Error is recorded as a span or event field (#2135)
• Layer::with_exception_field_propagation to enable setting exception.message and exception.backtrace semantic-convention fields on the current span when an event with an Error field is recorded (#2135)

Thanks to @lilymara-onesignal for contributing to this release!

This release adds support for emitting thread names and IDs to OpenTelemetry, as well as recording std::error::Error values in a structured manner with their source chain included. Additionally, this release fixes issues related to event and span source code locations.

Added

• Layer::with_threads to enable recording thread names/IDs according to OpenTelemetry semantic conventions (#2134)
• Error::source chain when recording std::error::Error values (#2122)
• Layer::with_location method (replaces Layer::with_event_location) (#2124)

Changed

• std::error::Error values are now recorded using fmt::Display rather than fmt::Debug (#2122)

Fixed

• Fixed event source code locations overwriting the parent span's source location (#2099)
• Fixed Layer::with_event_location not controlling whether locations are emitted for spans as well as events (#2124)

Deprecated

• Layer::with_event_location: renamed to Layer::with_location, as it now controls both span and event locations (#2124)

Thanks to new contributors @lilymara-onesignal, @hubertbudzynski, and @DevinCarr for contributing to this release!

This release fixes an issue introduced in v0.17.1 where tracing-opentelemetry could not be compiled with default-features = false.

Fixed

• Compilation failure with tracing-log feature disabled (#1949)

Added

• OpenTelemetryLayer can now add detailed location information to forwarded events (defaults to on) (#1911)
• OpenTelemetryLayer::with_event_location to control whether source locations are recorded (#1911)

Changed

• Avoid unnecessary allocations to improve performance when recording events (#1917)

Thanks to @djc for contributing to this release!

Breaking Changes

• Upgrade to v0.17.0 of opentelemetry (#1853) For list of breaking changes in OpenTelemetry, see the v0.17.0 changelog.

Breaking Changes

• Upgrade to v0.17.1 of opentelemetry (#1497) For list of breaking changes in OpenTelemetry, see the v0.17.1 changelog.

Breaking Changes

• Upgrade to v0.15.0 of opentelemetry (#1441) For list of breaking changes in OpenTelemetry, see the v0.14.0 changelog.

Added

• Spans now include Opentelemetry code.namespace, code.filepath, and code.lineno attributes (#1411)

Changed

• Improve performance by pre-allocating attribute Vecs (#1327)

Thanks to @Drevoed, @lilymara-onesignal, and @Folyd for contributing to this release!

Breaking Changes

• Upgrade to v0.14.0 of opentelemetry (#1394) For list of breaking changes in OpenTelemetry, see the v0.14.0 changelog.

Breaking Changes

• Upgrade to v0.13.0 of opentelemetry (#1322) For list of breaking changes in OpenTelemetry, see the v0.13.0 changelog.

Changed

• Improve performance when tracked inactivity is disabled (#1315)

Breaking Changes

• Upgrade to v0.12.0 of opentelemetry (#1200) For list of breaking changes in OpenTelemetry, see the v0.12.0 changelog.

Breaking Changes

• Upgrade to v0.11.0 of opentelemetry (#1161) For list of breaking changes in OpenTelemetry, see the v0.11.0 changelog.
• Update OpenTelemetrySpanExt::set_parent to take a context by value as it is now stored and propagated. (#1161)
• Rename PreSampledTracer::sampled_span_context to PreSampledTracer::sampled_context as it now returns a full otel context. (#1161)

Added

• Track busy/idle timings as attributes via with_tracked_inactivity (#1096)

Breaking Changes

• Upgrade to v0.10.0 of opentelemetry (#1049) For list of breaking changes in OpenTelemetry, see the v0.10.0 changelog.

Added

• Implement additional record types (bool, i64, u64) (#1007)

Breaking changes

• Add PreSampledTracer interface, removes need to specify sampler (#962)

Fixed

• Connect external traces (#956)
• Assign default ids if missing (#1027)

Breaking Changes

• Upgrade to v0.8.0 of opentelemetry (#932) For list of breaking changes in OpenTelemetry, see the v0.8.0 changelog.

Breaking Changes

• Upgrade to v0.7.0 of opentelemetry (#867) For list of breaking changes in OpenTelemetry, see the v0.7.0 changelog.

Added

• Support tracing-log special values (#735)
• Support Span::follows_from creating otel span links (#723)
• Dynamic otel span names via otel.name field (#732)

Breaking Changes

• Upgrade to v0.6.0 of opentelemetry (#745)

Fixed

• Filter out invalid parent contexts when building span contexts (#743)

Added

• tracing_opentelemetry::layer() method to construct a default layer.
• OpenTelemetryLayer::with_sampler method to configure the opentelemetry sampling behavior.
• OpenTelemetryLayer::new method to configure both the tracer and sampler.

Breaking Changes

• OpenTelemetrySpanExt::set_parent now accepts a reference to an extracted parent Context instead of a SpanContext to match propagators.
• OpenTelemetrySpanExt::context now returns a Context instead of a SpanContext to match propagators.
• OpenTelemetryLayer::with_tracer now takes &self as a parameter
• Upgrade to v0.5.0 of opentelemetry.

Fixed

• Fixes bug where child spans were always marked as sampled

Added

• Change span status code to unknown on error event

Added

• Span extension for injecting and extracting opentelemetry span contexts into tracing spans

Removed

• Disabled the metrics feature of the opentelemetry as it is unused.

Changed

• Update tracing-subscriber to 0.2.0 stable
• Update to opentelemetry 0.2.0