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CHANGELOG.md

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Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Guideline to update the version

Increment the:

  • MAJOR version when you make incompatible API/ABI changes,
  • MINOR version when you add functionality in a backwards compatible manner, and
  • PATCH version when you make backwards compatible bug fixes.

[Unreleased]

[1.3.0] 2022-04-11

  • [ETW EXPORTER] ETW provider handle cleanup (#1322)
  • [BUILD] Move public definitions into opentelemetry_api. (#1314)
  • [METRICS] OStream example (#1312)
  • [BUILD] Rename http_client_curl to opentelemetry_http_client_curl (#1301)
  • [METRICS SDK] Add InstrumentationInfo and Resource to the metrics data to be exported. (#1299)
  • [TESTS] Add building test without RTTI (#1294)
  • [METRICS SDK] Implement periodic exporting metric reader (#1286)
  • [SDK] Bugfix: span SetAttribute crash (#1283)
  • [BUG] Remove implicitly deleted default constructor (#1267)
  • [METRICS SDK] Synchronous Metric collection (Delta , Cumulative) (#1265)
  • [METRICS SDK] Metrics exemplar round 1 (#1264)
  • [EXPORTER] Fix: use CURLOPT_TIMEOUT_MS to config OtlpHttpExporter's timeout instead of CURLOPT_TIMEOUT (#1261)
  • [EXPORTER] Jaeger Exporter - Populate Span Links (#1251)
  • [SDK] Reorder the destructor of members in LoggerProvider and TracerProvider (#1245)
  • [METRICS SDK] Enable metric collection from MetricReader (#1241)
  • [METRICS SDK] Asynchronous Aggregation storage (#1232)
  • [METRICS SDK] Synchronous Instruments - Aggregation Storage(s) creation for configured views (#1219)
  • [BUILD] Added s390x arch into CMake build. (#1216)
  • [API] Allow extension of the lifetime of ContextStorage. (#1214)
  • [METRICS SDK] Add Aggregation storage (#1213)
  • [TESTS] Fix ostream_log_test Mac (#1208)
  • [BUILD] Update grpc to v1.43.2 to support VS2022/MSVC 19.30 and bazel 5.0 (#1207)
  • [DOCS] Benchmark documentation (#1205)
  • [DOCS] Fix errors in SDK documentation (#1201)
  • [METRICS EXPORTER] Ostream metric exporter (#1196)
  • [Metrics SDK] Filtering metrics attributes (#1191)
  • [Metrics SDK] Sync and Async Instruments SDK (#1184)
  • [Metrics SDK] Add Aggregation as part of metrics SDK. (#1178)
  • [BUILD] Cmake: thrift requires boost headers, include them as Boost_INCLUDE_DIRS (#1100)

Notes:

#1301 added opentelemetry_ as prefix to http_client_curl library for resolving potential naming conflict, this could break existing cmake build if http_client_curl is listed as explicit dependency in user's cmake file.

[1.2.0] 2022-01-31

  • [CI] Continuous benchmark tests as part of the CI (#1174)
  • [API] Allow to use external abseil for bazel targets (#1172)
  • [EXPORTER] Importing gsl::span if std::span is not available (#1167)
  • [EXPORTER] Synchronized calls to Exporter::Export & Shutdown (#1164)
  • [EXPORTER] OTLP http exporter block thread (#1163)
  • [TESTS] Jaeger: ThriftSender unit test (#1162)
  • [EXPORTER] InMemorySpanExporter shutdown fix (#1161)
  • [EXPORTER] Fix leak in Jaeger exporter (#1160)
  • [TESTS] ZipkinExporter unit-tests (#1155)
  • [SDK] Logger: propagating resources through LoggerProvider (#1154)
  • [SDK] Logger: support for instrumentation library (#1149)
  • [SDK] Add log level for internal log of sdk (#1147)
  • [METRICS] Metrics SDK: View API (#1110)

Notes on experimental features:

#1149 and #1154 from above CHANGELOG introduced API changes which are not backward compatible with previous logs, please update API package to this release if ENABLE_LOGS_PREVIEW is turned on (it is turned off by default).

[1.1.1] 2021-12-20

  • [SDK] Rename OTEL_CPP_GET_ATTR macro, and define it using fully qualified attr function (#1140)
  • [SDK] Default resource attributes and attributes in OTEL_RESOURCE_ATTRIBUTES are missing when using Otlp*LogExporter (#1082)
  • [METRICS] Add Meter and MeterProvider in the SDK (#1078)
  • [EXPORTER] ZipkinExporter shutdown (#1153)
  • [EXPORTER] Jaeger exporter shutdown (#1150)
  • [EXPORTER] Bugfix: jaeger::TUDPTransport::write crash when getaddrinfo returns error (#1116)
  • [EXPORTER] Bugfix: Jaeger exporter: extend supported attributes types (#1106)
  • [EXPORTER] Fix otlp generates null span ids (#1113)
  • [EXPORTER] Jaeger bazel (Linux only) (#1077)
  • [DOCS] Add note on DLL support (#1137)
  • [DOCS] Improve the instructions for Bazel build (#1136)
  • [DOCS] Document dependencies (#1119)
  • [DOCS] Dockerfile for quick demo/troubleshooting purpose (#905)
  • [TESTS] Fix data race in BM_ThreadYieldSpinLockThrashing (#1099)
  • [EXAMPLE] Otlp gRPC log example (#1083)
  • [BUILD] C++20 not Building with VS2019 (#1144)
  • [BUILD] Mark tags to bazel targets(#1075)

[1.1.0] 2021-11-19

  • [BUILD] build release tarball when nlohmann-json not installed (#1074)
  • [SDK] Bugfix: regex is neither working on GCC 4.9.x (#1069)
  • [SDK] Improvement: span_id should not break strict aliasing. (#1068)
  • [EXAMPLE] OTLP HTTP log example (#1062)
  • [SDK] OTLP gRPC log export should fail after shutdown (#1064)
  • [BUILD] Building otlp exporter from the release tarball (#1056)
  • [METRICS] Move old metrics implementation to different directory, and rename targets to _deprecated (#1053)
  • [EXPORTER] Add OTLP/gRPC Log Exporter (#1048)
  • [EXPORTER] Prometheus Exporter (#1031)
  • [EXPORTER] Add OTLP/HTTP Log Exporter (#1030)
  • [SDK] fix: issue 368- consistent namespace scope resolution (#1008)

[1.0.1] 2021-10-21

  • [EXPORTER] Exports span attributes to ETW (#1021)
  • [BUILD] cmake: add FindThrift.cmake find module method for thrift (#1020)
  • [BUILD] Fix nlohmann_json package dependency (#1017)
  • [EXPORTER] Change OTLP/HTTP default port from 4317 to 4318 (#1018)
  • [EXPORTER] ETW Log Exporter (#1006)
  • [API] Adding new Logger:log() method (#1005)
  • [EXPORTER] Remove scheme from OTLP endpoint before passing to gRPC (#988)
  • [BUILD] Update opentelemetry-proto for bazel build to 0.9.0 (#984)
  • [BUILD] Cross compling grpc_cpp_plugin not found bug (#982)
  • [EXPORTER] Support environment variables for both OtlpGrpcExporter and OtlpHttpExporter (#983)
  • [API/SDK] Add schema_url support to both Resource and InstrumentationLibrary (#979)
  • [BUILD] Fix build issue where memcpy was not declared in scope (#985)

[1.0.0] 2021-09-16

API

  • Document DefaultSpan, remove DefaultTracer (#959)
  • Separate baggage<->Context api from Baggage Propagator (#963)
  • Remove unused public API to_span_ptr (#964)
  • 💥 Make span context management public (#967)
  • Support determining parent span from Context while creating new Span (#969)
  • 💥 Traces: Add note on experimental semantic convention implementation, prefix semantics headers with experimental tag (#970)
  • Increment OPENTELEMETRY_ABI_VERSION_NO to 1 (#980)

SDK

  • Clean up GetEnvironmentVariable and remove unused variable under NO_GETENV (#976)
  • 💥 Resources: Add note on experimental semantic convention implementation, prefix semantics headers with experimental tag (#970)

OTLP Exporter

  • 🐛 Ignore status description if status code is not Error (#962)
  • 💥 Make Otlp exporter configuration environment variables specs-compliant (#974)

Zipkin Exporter

  • 🐛 Don't set parentId in case parentId is empty (#943)
  • 🚀 Extend zipkin exporter with ability to provide headers (#951)

DOCS

  • 📖 Add getting-started documentation for SDK: (#942)
  • 📖 Remove unnecessary spaces and spelling of gRPC in README (#965)

BUILD

  • Disable bazel build for gcc 4.8, upgrade versions for grpc(v1.39.1) and bazel(4.2.0), document bazel support (#953)
  • Move CMake config template to cmake folder (#958)
  • Enable CMake to search the new package variable <PackageName>_ROOT (#975)
  • 🐛 Do not override CMAKE_CXX_STANDARD (#977)

🚧 Experiemental Features (Will change in future)

  • Semantic Conventions for traces - As the specs is still experimental, the implementation will change in future.
  • Semantic Convention for resource - As the specs is still experimental, the implementation will change in future.
  • Logs and Metrics API & SDK - These are not compliant, and are behind feature flag. Not recommended to use for now.

[1.0.0-rc4] 2021-08-04

  • [EXPORTER] BREAKING CHANGE Fix default HTTP port for OTLP HTTP Exporter (#939)
  • [API] Fix timeout calculation for Tracer::Flush() and Tracer::Close() (#937)
  • [API] Fix for Stack::Resize that new_capacity is not assigned to capacity_ (#934)
  • [SDK] Fix race condition in circular buffer simulation test (#931)
  • [EXPORTER] Fix error logging in Jaeger Exporter (#930)
  • [BUILD] Use latest grpc version (v1.39.0) for cmake build of otlp exporter (#927)
  • [EXPORTER] Add Jaeger Thrift HTTP exporter (#926)
  • [SDK] Move env-var read logic to common dir, and optional reading of env-var (#924)
  • [EXPORTER] Remove recordable header from CMake install rules for exporters (#923)
  • [EXPORTER] BREAKING CHANGE Rename Recordable to JaegerRecordable in Jaeger exporter (#919)
  • [EXPORTER] BREAKING CHANGE Rename Jaeger exporter target (#918)
  • [EXPORTER] Add Zipkin exporter example (#917)
  • [EXPORTER] Bazel build for Zipkin exorter (#916)
  • [BUILD] Allow to use local GSL (#915)
  • [DOCS] Document vcpkg toolchain configuration (#913)
  • [SDK] Fix for resource deletion after tracer provider shutdown (#911)
  • [BUILD] Add bazel build for grpc example (#910)
  • [EXPORTER] Add resource and instrumentation library support for OStreamSpanExporter (#906)
  • [API] Adding semantic-convention attributes for trace (#868)

[1.0.0-rc3] 2021-07-12

  • [DOCS] Add doxygen reference docs for SDK (#902)
  • [EXPORTER] Jaeger Exporter - Populate resource attributes into process tags in Jaeger (#897)
  • [EXPORTER] Zipkin Exporter - Report Event timestamp into microseconds (#896)
  • [EXPORTER] Jaeger Exporter - Handle span events (#895)
  • [DOCS] Fix API docs for Scope object (#894)
  • [BUILD] Fix Linking error for libcurl on some macOS environments (#893)
  • [API] Context cleanup from Runtime Storage (#885)
  • [DOCS] Document strategy to avoid conflict between two different versions of Abseil (#883)
  • [EXPORTER] ETW Exporter - Document example for ETW Exporter (#882)
  • [SDK] Create Span with Valid spanId and traceId irrespective of Sampling decision (#879)
  • [EXPORTER] Jaeger Exporter - Rename bswap macros to avoid clash on some systems (#876)
  • [API] Add Semantics Conventions attributes for Resources (#872)
  • [BUILD] Use nlohmann-json from submodules if not already installed (#870)

[1.0.0-rc2] 2021-06-18

  • [EXPORTER] Jaeger Exporter - Support for Instrumentation Library (#864)
  • [TESTS] Adding benchmark tests for baggage api (#861)
  • [BUILD] Fix for GCC9/C++20 Support for using STL for modern C++ features (#860)
  • [TESTS] Adding benchmark tests for span create api (#856)
  • [BUILD] Fix for using Abseil library for modern C++ features (#850)
  • [BUILD] Fix issues with win32/x86 compilation (#847)
  • [DOCS] Document OSS dependencies and their licenses (#844)
  • [BUILD] Various fixes to build with Visual Studio 2015 (#840)
  • [INSTRUMENTATION] HTTPClient: Change support for full URL argument (#833)
  • [EXPORTER] Jaeger Exporter - fix endianness of Jaeger IDs for transmission (#832)
  • [INSTRUMENTATION] fix protobuf compilation warning in gRPC example (#830)
  • [EXPORTER] BREAKING CHANGE - Add OTLP/HTTP+JSON Protocol exporter; Rename OtlpExporter to OtlpGrpcExporter (#810)

[1.0.0-rc1] 2021-06-04

  • [BUILD] Enable Jaeger exporter build in Windows (#815)
  • [DOCS] Versioning doc update to clarify release and versioning policy (#811)
  • [LOGS] Move Logging implementation under feature-flag (#807)
  • [BUILD] Filter metric headers files from opentelemetry-api and opentelemetry-sdk targets if metrics feature-flag is disabled (#806)
  • [BUILD] Fix install rule for ostream exporter, Jaeger, ETW, ElasticSearch ([#805](Fix install rule for header files of ostream exporter))
  • [API/SDK] Switch from mpark::variant to absl::variant as default (#771)
  • [API/SDK] Support const char * as acceptable data type for attributes and resources (#771)
  • [EXAMPLE] gRPC instrumentation example with context propagation (#729)

[0.7.0] 2021-05-26

  • [METRICS] Move metrics api/sdk under preview feature flag (#745)
  • [DOCS] Add instructions to build using Bazel (#747)
  • [DOCS] Update copyright headers (#754)
  • [EXPORTER] Populate resource to OTLP proto data (#758)
  • [CI] Add CodeQL security scan CI workflow (#770)
  • [BUILD] Enable building API only CMake Project (#778)
  • [SDK] Fix for sampling of root span (#784)
  • [CI] Add Jaeger exporter to CMake CI build (#786)
  • [API] BREAKING CHANGE - Tracer::WithActiveSpan() to return Scope object intead of unique_ptr (#788)
  • [DOCS] Add docs for nested spans and context propagation in readthedocs (#792)
  • [CI] Output verbose error for failed unit-test in CI (#796)

[0.6.0] 2021-05-11

  • [EXPORTER] Add Jaeger exporter (#534)
  • [SDK] Support multiple processors (#692)
  • [SDK] Add instrumentation library and multiple tracer support (#693)
  • [SDK] Resource integration with Exporters (#706)
  • [EXAMPLE] Enhance existing http example with propagation (#727)

[0.5.0] 2021-04-26

  • [SDK] Support custom span-id and trace-id generator (#681)
  • [SDK] Add SpanContext (and TraceState) to Recordable (#667)
  • [SDK] Global Propagator (#668)
  • [SDK] Create SharedContext for updating span pipeline (#650)
  • [API] Baggage implementation (#676)
  • [API] Move class from opentelemetry::core namespace to opentelemetry::common namespace (#686)

[0.4.0] 2021-04-12

  • [EXPORTER] ETW Exporter enhancements (#519)
  • [EXPORTER] Read Zipkin endpoint from environment variable. (#624)
  • [EXPORTER] Split Zpages webserver hosting from Exporter (#626)
  • [EXPORTER] ETW Exporter Usage Instructions (#628)
  • [INSTRUMENTATION] HTTP Client/Server Instrumentation example (#632)
  • [EXPORTER] Enable tls authentication for otlp grpc exporter ([#635](Enable tls authentication for otlp grpc exporter))
  • [API] Refactoring trace_state to reuse common functionality in baggage (#638)

[0.3.0] 2021-03-19

  • [EXPORTER] Added Zipkin Exporter. (#471)
  • [API] Added Jaeger propagator. (#599)
  • [PROPAGATOR] Added Composite Propagator (#597)
  • [API] Propagate traceflag from parent (#603)
  • [DOCS] Add sphinx support for api doc generation (595)
  • [SDK] Add service.name if missing in Resource (#616)

[0.2.0] 2021-03-02

  • [SDK] Added ForceFlush to TracerProvider. (#588).
  • [SDK] Added Resource API. (#502)
  • [API] Modified TraceState support for w3c trace context as per specs.
  • [SDK] TraceState implementation as per spec (#551)
  • [API] Added B3 Propagator. (#523)
  • [Exporter] Added ETW Exporter. (#376)
  • [CI] Enable cache for Bazel for faster builds. (#505)

[0.0.1] 2020-12-16

Added

  • Trace API and SDK experimental
  • OTLP Exporter

Changed

Removed