v1.13.0 release

Release of core packages

• opentelemetry-api
• opentelemetry-sdk

and exporter packages:

• opentelemetry-exporter-otlp (gRPC + HTTP/JSON)
• opentelemetry-exporter-prometheus

What's Changed

• [BUILD] Remove WITH_REMOVE_METER_PREVIEW, use WITH_ABI_VERSION_2 instead by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2370
• [SDK] Metrics ObservableRegistry Cleanup by @perhapsmaple in https://github.com/open-telemetry/opentelemetry-cpp/pull/2376
• [BUILD] Make WITH_OTLP_HTTP_SSL_PREVIEW mainstream by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2378
• [SDK] Creating DoubleUpDownCounter with no matching view by @lalitb in https://github.com/open-telemetry/opentelemetry-cpp/pull/2379
• [API] Add InstrumentationScope attributes in TracerProvider::GetTracer() by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2371
• Bump peter-evans/create-or-update-comment from 3.0.2 to 3.1.0 by @dependabot in https://github.com/open-telemetry/opentelemetry-cpp/pull/2381
• [BUILD] DLL export interface for Metrics by @perhapsmaple in https://github.com/open-telemetry/opentelemetry-cpp/pull/2344
• [BUILD] enum CanonicalCode names too generic... conflict with old C defines by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2385
• [BUILD] Fix cpack broken package version by @jafonso in https://github.com/open-telemetry/opentelemetry-cpp/pull/2386
• [API] Add a new AddLink() operation to Span by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2380
• [opentracing-shim] Add check for sampled context by @chusitoo in https://github.com/open-telemetry/opentelemetry-cpp/pull/2390
• [BUILD] Fix exported definitions when building DLL with STL by @perhapsmaple in https://github.com/open-telemetry/opentelemetry-cpp/pull/2387
• [BUILD] Add missing includes to runtime_context_test by @perhapsmaple in https://github.com/open-telemetry/opentelemetry-cpp/pull/2395
• [ADMIN] Add file .github/repository-settings.md by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2392
• [SDK] Fix GetLogger with empty library name by @ThomsonTan in https://github.com/open-telemetry/opentelemetry-cpp/pull/2398
• [TEST] Fix compiling problem and removed -DENABLE_TEST by @owent in https://github.com/open-telemetry/opentelemetry-cpp/pull/2401
• [BUILD] Check windows options are not passed to non-Windows build by @ThomsonTan in https://github.com/open-telemetry/opentelemetry-cpp/pull/2399
• [EXPORTER] Rework OTLP/HTTP and OTLP/GRPC exporter options by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2388
• Bump actions/github-script from 6 to 7 by @dependabot in https://github.com/open-telemetry/opentelemetry-cpp/pull/2403
• [Build] Update vcpkg to latest release by @ThomsonTan in https://github.com/open-telemetry/opentelemetry-cpp/pull/2412
• [SDK] Cardinality limits for metrics streams (Sync Instruments + Delta Temporality) by @lalitb in https://github.com/open-telemetry/opentelemetry-cpp/pull/2255
• [EXPORTER] Prometheus: Add unit to names, convert to word by @esigo in https://github.com/open-telemetry/opentelemetry-cpp/pull/2213
• [Metrics] Make context optional for histogram instruments in Metrics SDK by @ThomsonTan in https://github.com/open-telemetry/opentelemetry-cpp/pull/2416
• [BUILD] Fix references to trace namespace to be fully qualified by @bogdandrutu in https://github.com/open-telemetry/opentelemetry-cpp/pull/2422
• [BUILD] Bump third_party/googletest to same version as bazel by @bogdandrutu in https://github.com/open-telemetry/opentelemetry-cpp/pull/2421
• [BUILD] Remove defining NOMINMAX from api by @ThomsonTan in https://github.com/open-telemetry/opentelemetry-cpp/pull/2420
• [BUILD] 'uint8_t' not declared in this scope with gcc 13.2.1 by @Thomas-Barbier-1A in https://github.com/open-telemetry/opentelemetry-cpp/pull/2423
• [BUILD] Improve the handling of OPENTELEMETRY_HAVE_WORKING_REGEX. by @kylepl in https://github.com/open-telemetry/opentelemetry-cpp/pull/2430
• [SEMANTIC CONVENTIONS] Upgrade to semconv version 1.23.1 by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2428
• [BUILD] Use fully qualified references to trace/common namespace by @bogdandrutu in https://github.com/open-telemetry/opentelemetry-cpp/pull/2424
• [API] Create root span with active span by @lalitb in https://github.com/open-telemetry/opentelemetry-cpp/pull/2427
• [REMOVAL] Remove ZPAGES by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2433
• [RELEASE] Prepare release 1.13.0 by @marcalff in https://github.com/open-telemetry/opentelemetry-cpp/pull/2432

Important changes

• [API] Add InstrumentationScope attributes in TracerProvider::GetTracer() #2371

  • TracerProvider::GetTracer() now accepts InstrumentationScope attributes.
  • Because this is an ABI breaking change, the fix is only available with the CMake option WITH_ABI_VERSION_2=ON.
  • When building with CMake option WITH_ABI_VERSION_1=ON (by default) the ABI is unchanged, and the fix is not available.

• [API] Add a new AddLink() operation to Span #2380

  • New API Span::AddLink() adds a single link to a span.
  • New API Span::AddLinks() adds multiple links to a span.
  • Because this is an ABI breaking change, the fix is only available with the CMake option WITH_ABI_VERSION_2=ON.
  • When building with CMake option WITH_ABI_VERSION_1=ON (by default) the ABI is unchanged, and the fix is not available.

• [BUILD] Make WITH_OTLP_HTTP_SSL_PREVIEW mainstream #2378

  • The experimental CMake option WITH_OTLP_HTTP_SSL_PREVIEW is now promoted to stable. The default is changed to ON.
  • The experimental CMake option WITH_OTLP_HTTP_SSL_TLS_PREVIEW is now promoted to stable. The default is changed to ON.
  • These build options are scheduled to be removed by the next release, building without SSL/TLS will no longer be possible.

• [EXPORTER] Rework OTLP/HTTP and OTLP/GRPC exporter options #2388

  • OtlpGrpcMetricExporterOptions used to honor _TRACES_ environment variables, instead of _METRICS_ environment variables.
  • The implementation of OtlpGrpcMetricExporterOptions is now fixed.
  • Please check configuration variables, to make sure _METRICS_ variables are set as expected.

Breaking changes

• [BUILD] Remove WITH_REMOVE_METER_PREVIEW, use WITH_ABI_VERSION_2 instead #2370

  • The experimental CMake option WITH_REMOVE_METER_PREVIEW is removed, use option WITH_ABI_VERSION_2 instead.

• [BUILD] enum CanonicalCode names too generic... conflict with old C defines #2385

  • Header file opentelemetry/trace/canonical_code.h is unused, and is now removed.
  • This header should not be included directly in an application. If this is the case, please remove any remaining include directives.

• [BUILD] Fix exported definitions when building DLL with STL #2387

  • The MeterSelector, MeterSelectorFactory, InstrumentSelector, and InstrumentSelectorFactory APIs now use const std::string& instead of nostd::string_view for name, version and schema to maintain a single export definition for DLL.

• [EXPORTER] Rework OTLP/HTTP and OTLP/GRPC exporter options #2388

  • OtlpGrpcLogRecordExporter incorrectly used OtlpGrpcExporterOptions, which are options for traces and not logs.
  • This created a bug: the OtlpGrpcLogRecordExporter honors _TRACES_ environment variables, instead of _LOGS_ environment variables.
  • OtlpGrpcLogRecordExporter is changed to use OtlpGrpcLogRecordExporterOptions instead, fixing the bug.
  • User code that initializes the SDK with a GRPC Log exporter, and uses exporter options, should adjust to replace OtlpGrpcExporterOptions with OtlpGrpcLogRecordExporterOptions.
  • Please check configuration variables, to make sure _LOGS_ variables are set as expected.

• [REMOVAL] Remove ZPAGES #2433

  • As announced in release 1.12.0, the deprecated ZPAGES exporter is now removed.

New Contributors

• @perhapsmaple made their first contribution in https://github.com/open-telemetry/opentelemetry-cpp/pull/2376
• @jafonso made their first contribution in https://github.com/open-telemetry/opentelemetry-cpp/pull/2386
• @Thomas-Barbier-1A made their first contribution in https://github.com/open-telemetry/opentelemetry-cpp/pull/2423

Full Changelog: https://github.com/open-telemetry/opentelemetry-cpp/compare/v1.12.0...v1.13.0