opentelemetry-cpp 1.21.0

[BrewTestBot]

Created by brew bump

---

Created with brew bump-formula-pr.

release notes

## v1.21.0 release
Release of:

opentelemetry-api
opentelemetry-sdk
exporter packages

What's Changed

[BUILD] Remove WITH_ABSEIL by @owent in [BUILD] Remove WITH_ABSEIL open-telemetry/opentelemetry-cpp#3318
[INSTALL] add cmake components to the package by @dbarker in [INSTALL] add cmake components to the package open-telemetry/opentelemetry-cpp#3220
[CI] Harden GitHub Actions by @khanhtc1202 in [CI] Harden GitHub Actions open-telemetry/opentelemetry-cpp#3338
[StepSecurity] Harden GibHub Actions, part 2 by @marcalff in [StepSecurity] Harden GibHub Actions, part 2 open-telemetry/opentelemetry-cpp#3340
Bump github/codeql-action from 3.28.12 to 3.28.13 by @dependabot in Bump github/codeql-action from 3.28.12 to 3.28.13 open-telemetry/opentelemetry-cpp#3341
[DEVCONTAINER] expose cmake version setting as docker arg and environment variable by @dbarker in [DEVCONTAINER] expose cmake version setting as docker arg and environment variable open-telemetry/opentelemetry-cpp#3347
[CI] disable bzip2 in conan builds by @dbarker in [CI] disable bzip2 in conan builds open-telemetry/opentelemetry-cpp#3352
[SEMANTIC CONVENTIONS] Upgrade semantic conventions to 1.32.0 by @marcalff in [SEMANTIC CONVENTIONS] Upgrade semantic conventions to 1.32.0 open-telemetry/opentelemetry-cpp#3351
Bump github/codeql-action from 3.28.13 to 3.28.15 by @dependabot in Bump github/codeql-action from 3.28.13 to 3.28.15 open-telemetry/opentelemetry-cpp#3353
[CMAKE] bump cmake minimum required version to 3.14 by @dbarker in [CMAKE] bump cmake minimum required version to 3.14 open-telemetry/opentelemetry-cpp#3349
Bump codecov/codecov-action from 5.4.0 to 5.4.2 by @dependabot in Bump codecov/codecov-action from 5.4.0 to 5.4.2 open-telemetry/opentelemetry-cpp#3362
[DOC] Fix documentation tags in logger API by @zurex in [DOC] Fix documentation tags in logger API open-telemetry/opentelemetry-cpp#3371
[CI] fix artifacts download/upload by @esigo in [CI] fix artifacts download/upload open-telemetry/opentelemetry-cpp#3369
[API] Add Enabled method to Tracer by @psx95 in [API] Add Enabled method to Tracer open-telemetry/opentelemetry-cpp#3357
[BUILD] Fixes warnings of ciso646 in C++17 by @owent in [BUILD] Fixes warnings of ciso646 in C++17 open-telemetry/opentelemetry-cpp#3360
Bump github/codeql-action from 3.28.15 to 3.28.16 by @dependabot in Bump github/codeql-action from 3.28.15 to 3.28.16 open-telemetry/opentelemetry-cpp#3377
Bump step-security/harden-runner from 2.11.1 to 2.12.0 by @dependabot in Bump step-security/harden-runner from 2.11.1 to 2.12.0 open-telemetry/opentelemetry-cpp#3373
Bump docker/build-push-action from 6.15.0 to 6.16.0 by @dependabot in Bump docker/build-push-action from 6.15.0 to 6.16.0 open-telemetry/opentelemetry-cpp#3382
Bump actions/download-artifact from 4.2.1 to 4.3.0 by @dependabot in Bump actions/download-artifact from 4.2.1 to 4.3.0 open-telemetry/opentelemetry-cpp#3381
[CI] Harden Github actions - pinned-dependencies (part -1) by @lalitb in [CI] Harden Github actions - pinned-dependencies (part -1) open-telemetry/opentelemetry-cpp#3380
[StepSecurity] ci: Harden GitHub Actions by @step-security-bot in [StepSecurity] ci: Harden GitHub Actions open-telemetry/opentelemetry-cpp#3378
[SDK] Base2 exponential histogram aggregation by @ethandmd in [SDK] Base2 exponential histogram aggregation open-telemetry/opentelemetry-cpp#3346
[StepSecurity] ci: Harden GitHub Actions by @step-security-bot in [StepSecurity] ci: Harden GitHub Actions open-telemetry/opentelemetry-cpp#3379
[BUILD] Fixes glibc++ 5 checking by @owent in [BUILD] Fixes glibc++ 5 checking open-telemetry/opentelemetry-cpp#3355
[TEST] Add stress test for histogram metric for multiple threads validation by @ThomsonTan in [TEST] Add stress test for histogram metric for multiple threads validation open-telemetry/opentelemetry-cpp#3388
Bump github/codeql-action from 3.28.16 to 3.28.17 by @dependabot in Bump github/codeql-action from 3.28.16 to 3.28.17 open-telemetry/opentelemetry-cpp#3389
[SDK] Optimize PeriodicExportingMetricReader Thread Usage by @ColeVanOphem in [SDK] Optimize PeriodicExportingMetricReader Thread Usage open-telemetry/opentelemetry-cpp#3383
[Metrics SDK] Use nostd::function_ref in AttributesHashMap by @yashykt in [Metrics SDK] Use nostd::function_ref in AttributesHashMap open-telemetry/opentelemetry-cpp#3393
[SDK] support aggregation of identical instruments by @dbarker in [SDK] support aggregation of identical instruments open-telemetry/opentelemetry-cpp#3358
[BUILD] Fixes unused var by @owent in [BUILD] Fixes unused var open-telemetry/opentelemetry-cpp#3397
[INSTALL] Unify cmake install functions and dynamically set component dependencies by @dbarker in [INSTALL] Unify cmake install functions and dynamically set component dependencies open-telemetry/opentelemetry-cpp#3368
[BUILD] Upgrade nlohmann_json to 3.12.0 by @marcalff in [BUILD] Upgrade nlohmann_json to 3.12.0 open-telemetry/opentelemetry-cpp#3406
[BUILD] Upgrade opentelemetry-proto to 1.6.0 by @marcalff in [BUILD] Upgrade opentelemetry-proto to 1.6.0 open-telemetry/opentelemetry-cpp#3407
[CMAKE] add generated protobuf headers to the opentelemetry_proto target by @dbarker in [CMAKE] add generated protobuf headers to the opentelemetry_proto target open-telemetry/opentelemetry-cpp#3400
[MERGE] Fix accidental rollback of nlohmann-json submodule by @dbarker in [MERGE] Fix accidental rollback of nlohmann-json submodule open-telemetry/opentelemetry-cpp#3415
Bump fossas/fossa-action from 1.6.0 to 1.7.0 by @dependabot in Bump fossas/fossa-action from 1.6.0 to 1.7.0 open-telemetry/opentelemetry-cpp#3414
Bump docker/build-push-action from 6.16.0 to 6.17.0 by @dependabot in Bump docker/build-push-action from 6.16.0 to 6.17.0 open-telemetry/opentelemetry-cpp#3420
Bump codecov/codecov-action from 5.4.2 to 5.4.3 by @dependabot in Bump codecov/codecov-action from 5.4.2 to 5.4.3 open-telemetry/opentelemetry-cpp#3419
[SEMANTIC CONVENTIONS] Upgrade semantic conventions to 1.33 by @marcalff in [SEMANTIC CONVENTIONS] Upgrade semantic conventions to 1.33 open-telemetry/opentelemetry-cpp#3416
[DOCS] update the INSTALL guide on cmake components by @dbarker in [DOCS] update the INSTALL guide on cmake components open-telemetry/opentelemetry-cpp#3422
Bump github/codeql-action from 3.28.17 to 3.28.18 by @dependabot in Bump github/codeql-action from 3.28.17 to 3.28.18 open-telemetry/opentelemetry-cpp#3423
[CMAKE] update cmake files in examples directory by @dbarker in [CMAKE] update cmake files in examples directory open-telemetry/opentelemetry-cpp#3421
[SDK] Fix Base2ExponentialHistogramAggregation Merge with empty buckets by @dbarker in [SDK] Fix Base2ExponentialHistogramAggregation Merge with empty buckets open-telemetry/opentelemetry-cpp#3425
[SDK] Fix MetricProducer interface by @yashykt in [SDK] Fix MetricProducer interface open-telemetry/opentelemetry-cpp#3413
[CMAKE] remove global include_directories usage and rely on target properties by @dbarker in [CMAKE] remove global include_directories usage and rely on target properties open-telemetry/opentelemetry-cpp#3426
[BUILD] remove unused WITH_CURL build flag by @marcalff in [BUILD] remove unused WITH_CURL build flag open-telemetry/opentelemetry-cpp#3429
[SEMANTIC CONVENTIONS] Upgrade to semantic conventions 1.34.0 by @marcalff in [SEMANTIC CONVENTIONS] Upgrade to semantic conventions 1.34.0 open-telemetry/opentelemetry-cpp#3428
[EXPORTER] ostream log exporter, fix memory ownership issues by @marcalff in [EXPORTER] ostream log exporter, fix memory ownership issues open-telemetry/opentelemetry-cpp#3417
[TEST] add all components to the cmake fetch content test by @dbarker in [TEST] add all components to the cmake fetch content test open-telemetry/opentelemetry-cpp#3433
[BUILD] Error out when building DLL without MSVC by @ThomsonTan in [BUILD] Error out when building DLL without MSVC open-telemetry/opentelemetry-cpp#3438
[BUILD] Add missing CMake keyword for target_link_libraries by @ThomsonTan in [BUILD] Add missing CMake keyword for target_link_libraries open-telemetry/opentelemetry-cpp#3442
[CMAKE] Remove third-party version mismatch warning by @dbarker in [CMAKE] Remove third-party version mismatch warning open-telemetry/opentelemetry-cpp#3432
Bump docker/build-push-action from 6.17.0 to 6.18.0 by @dependabot in Bump docker/build-push-action from 6.17.0 to 6.18.0 open-telemetry/opentelemetry-cpp#3446
[SEMANTIC CONVENTIONS] Fix comment style to preserve markup by @marcalff in [SEMANTIC CONVENTIONS] Fix comment style to preserve markup open-telemetry/opentelemetry-cpp#3444
[EXPORTER] support unix sockets in grpc client by @ethandmd in [EXPORTER] support unix sockets in grpc client open-telemetry/opentelemetry-cpp#3410
[BUILD] Propagate INTERFACE_COMPILE_DEFINITIONS from API through common_foo_library by @ThomsonTan in [BUILD] Propagate INTERFACE_COMPILE_DEFINITIONS from API through common_foo_library open-telemetry/opentelemetry-cpp#3440
[RELEASE] Release opentelemetry-cpp 1.21.0 by @marcalff in [RELEASE] Release opentelemetry-cpp 1.21.0 open-telemetry/opentelemetry-cpp#3445

New Features


[SDK] Base2 exponential histogram aggregation

#3346

Add base2 exponential histogram aggregation. Includes a new aggregation type,

ostream exporter, and otlp/grpc exporter. Updated histogram aggregation and

benchmark tests.



Important changes


[EXPORTER] ostream log exporter, fixed memory ownership issues

#3417


In the SDK, the following classes implementation has changed:

opentelemetry::sdk::logs::ReadableLogRecord
opentelemetry::sdk::logs::ReadWriteLogRecord



An application implementing a custom log record exporter,

that reuses these classes from the opentelemetry-cpp SDK,

will need code adjustments, in particular for methods:

GetBody()
GetAttributes()



Applications not using these SDK classes directly are not affected.




[BUILD] Remove WITH_ABSEIL

#3318


The build option WITH_ABSEIL is no longer used, and opentelemetry-cpp

will no longer use any release of abseil provided externally,

for its own use.


Instead, opentelemetry-cpp will only use an internal abseil version.


This change resolves long standing binary integrity issues,

that occurred in the past when mixing several versions of abseil

in the build.




Deprecations

This release contains deprecations, see file DEPRECATED.md for details.

New Contributors

@khanhtc1202 made their first contribution in [CI] Harden GitHub Actions open-telemetry/opentelemetry-cpp#3338
@step-security-bot made their first contribution in [StepSecurity] ci: Harden GitHub Actions open-telemetry/opentelemetry-cpp#3378
@ethandmd made their first contribution in [SDK] Base2 exponential histogram aggregation open-telemetry/opentelemetry-cpp#3346
@ColeVanOphem made their first contribution in [SDK] Optimize PeriodicExportingMetricReader Thread Usage open-telemetry/opentelemetry-cpp#3383

Full Changelog: open-telemetry/opentelemetry-cpp@v1.20.0...v1.21.0

View the full release notes at https://github.com/open-telemetry/opentelemetry-cpp/releases/tag/v1.21.0.

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