[logs] Support OTel Logs Bridge API

[CodeBlanch]

The OpenTelemetry Specification has been updated with some new logging APIs marked stable:

API: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/bridge-api.md SDK: https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/logs/sdk.md

This issue is for tracking the work to implement this in OTel .NET.

Note: This work has been made an experimental feature (see #4735). The APIs will be public in prerelease builds of OpenTelemetry .NET (starting with 1.6.0-alpha.1) but will be internal in stable builds.

• [X] OpenTelemetry.Api updates
  • [X] Initial definition: #4422
  • [X] Drop class InstrumentationScope: #4436
  • [X] LogRecordSeverity enum: #4451
  • [X] Expose implementation publicly: #4552
  • [X] EmitLog API feedback: #4559
• [X] OpenTelemetry.Api.ProviderBuilderExtensions updates (DI surface)
  • [X] Initial definition: #4434
  • [X] Updates for recent changes to tracing & metrics: #4531
  • [X] Expose implementation publicly: #4558
• [X] OpenTelemetry (SDK) updates
  • [X] Define IServiceCollection builder: #4441
  • [X] Define BatchExportLogRecordProcessorOptions: #4446
  • [X] Define sdk builder: #4447
  • [X] Define builder extensions: #4450
  • [X] Define provider extensions: #4480
  • [X] Define LoggerProviderSdk: #4453
  • [X] Define LoggerSdk: #4455
  • [X] LogRecord updates: #4456
    • [X] Unit test: #4462
  • [X] Update BatchExportLogRecordProcessorOptions for spec stable: #4463
  • [X] Define Sdk.CreateLoggerProviderBuilder: #4464
  • [X] Add tests for sdk builder extensions & provider: #4467
  • [X] Update ILoggerProvider to use OTel LoggerProvider: #4473
    • [X] New API surface for passing LoggerProvider to ILogger integration: #5072
      • Proposal 1: #4496
      • Proposal 2: #4501
      • Proposal 3: #4502
      • Proposal 4: #4506
  • [x] Expose implementation publicly: #4568
  • [X] Instrumentation scope version fix: #4635
• [X] OpenTelemetry.Extensions.Hosting updates
  • [X] Define WithLogging: #4483
  • [X] Remove auto-registration of ILogger: #4535
  • [X] Expose implementation publicly: #4735
• [X] OpenTelemetry.Exporter.InMemory updates
  • [X] Add LoggerProviderBuilder registration extension: #4541
  • [X] Expose implementation publicly: #4584
• [X] OpenTelemetry.Exporter.Console updates
  • [X] Add LoggerProviderBuilder registration extension: #4549
  • [X] Updates for LogRecord.Severity & LogRecord.SeverityText: #4568
  • [X] Expose implementation publicly: #4583
• [X] OpenTelemetry.Exporter.OpenTelemetryProtocol.Logs updates
  • [X] Updates for LogRecord.Severity & LogRecord.SeverityText: #4568
  • [X] Add LoggerProviderBuilder registration extension: #5103
  • [X] Add support for Body set directly on LogRecord: #5268
  • [X] Add support for LogRecords without CategoryName set: #5300
• [ ] Before marking stable future open/follow-up items:
  • [ ] LogRecord.Severity nullable: https://github.com/open-telemetry/opentelemetry-dotnet/pull/4456#discussion_r1183013068
  • [ ] Discuss obsoletions:
    • OpenTelemetryLoggerOptions.AddProcessor & OpenTelemetryLoggerOptions.SetResourceBuilder
    • InMemoryExporter, ConsoleExporter, & OtlpExporter OpenTelemetryLoggerOptions registration extensions
  • [X] Remove added InternalsVisibleTo
    • [X] OpenTelemetry.Api: #4552
    • [X] OpenTelemetry.Api.ProviderBuilderExtensions: #4558
    • [X] OpenTelemetry: #4568
  • [ ] Documentation updates
  • [ ] Example updates
  • [ ] Public API review

Relates to #4014

[alrz]

Is there a PR to add .WithLogging(c => c.AddOtlpExporter());? didn't find it in the list.

[cijothomas]

Is there a PR to add .WithLogging(c => c.AddOtlpExporter());? didn't find it in the list.

It is separate from Bridge itself. See https://github.com/open-telemetry/opentelemetry-dotnet/pull/5648