chore: prepare next release

[opentelemetrybot]

1.29.0

💥 Breaking Change

• feat(sdk-metrics): Add support for aggregation cardinality limit with a default limit of 2000. This limit can be customized via views #5182

0.56.0

💥 Breaking Change

• feat(otlp-exporter-base)!: collapse base classes into one #5031 @pichlermarc
  • OTLPExporterNodeBase has been removed in favor of a platform-agnostic implementation (OTLPExporterBase)
  • OTLPExporterBrowserBase has been removed in favor of a platform-agnostic implementation (OTLPExporterBase)
  • ExportServiceError was intended for internal use and has been dropped from exports
  • validateAndNormalizeHeaders was intended for internal use and has been dropped from exports
  • OTLPExporterBase all properties are now private, the constructor now takes an IOTLPExportDelegate, the type parameter for config type has been dropped.
    • This type is scheduled for removal in a future version of this package, please treat all exporters as SpanExporter, PushMetricExporter or LogRecordExporter, based on their respective type.
• feat(otlp-grpc-exporter-base)!: collapse base classes into one #5031 @pichlermarc
  • OTLPGRPCExporterNodeBase has been removed in favor of a platform-agnostic implementation (OTLPExporterBase from @opentelemetry/otlp-exporter-base)
• feat(otlp-transformer)!: accept ResourceMetrics in serializers instead of ResourceMetrics[]
  • (user-facing): ProtobufMetricsSerializer now only accepts ResourceMetrics instead of ResourceMetrics[] to align with PushMetricExporter requirements
  • (user-facing): JsonMetricsSerializer now only accepts ResourceMetrics instead of ResourceMetrics[] to align with PushMetricExporter requirements

🚀 (Enhancement)

• feat(otlp-exporter-base): handle OTLP partial success #5183 @pichlermarc
• feat(otlp-exporter-base): internally accept a http header provider function only #5179 @pichlermarc
• refactor(otlp-exporter-base): don't create blob before sending xhr #5193 @pichlermarc
  • improves compatibility with some unsupported runtimes
• feat(otlp-exporter-base): add http response body to exporter error #5204 @pichlermarc

🐛 (Bug Fix)

• fix(otlp-exporter-*): de-confuse Nuxt build tooling by not using 'export *' in comments #5227 @pichlermarc

🏠 (Internal)

• chore(otlp-exporter-*-grpc): clean up tests #5196 @pichlermarc
• chore(otlp-exporter-*-http): clean up tests #5196 @pichlermarc
• chore(otlp-exporter-*-proto): clean up tests #5196 @pichlermarc

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.59%. Comparing base (b0f73ea) to head (d303248).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5232      +/-   ##
==========================================
- Coverage   94.60%   94.59%   -0.02%     
==========================================
  Files         315      315              
  Lines        8012     8012              
  Branches     1617     1617              
==========================================
- Hits         7580     7579       -1     
- Misses        432      433       +1     

see 1 file with indirect coverage changes

[pichlermarc]

open-telemetry/opentelemetry-js-contrib#2572 is a release blocker - we cannot run the full test suite over at the contrib repo without it being resolved.

Edit: open-telemetry/opentelemetry-js-contrib#2579 will unblock this.
Edit 2: open-telemetry/opentelemetry-js-contrib#2579 was merged, we can go ahead.