core-1.4.0-alpha.2

OpenTelemetry

• Added Sdk.CreateLoggerProviderBuilder method and support for dependency
  injection scenarios when configuring OpenTelemetryLoggerProvider
  (#3504)

OpenTelemetry.Api

• Updated to System.Diagnostics.DiagnosticSource preview version 7.0.0.

  With this update, applications targeting .NET 5 and lower will receive a
  warning at build time as described here
  (note: building using older versions of the .NET SDK produces an error at
  build time). This is because .NET 5 reached EOL in May 2022 and .NET
  Core 3.1 reaches EOL in December 2022.

  There is no guarantee that System.Diagnostics.DiagnosticSource will continue
  to work on older versions of .NET. However, the build warning can be
  suppressed by setting the SuppressTfmSupportBuildWarnings MSBuild property.

  This does not affect applications targeting .NET Framework.
  #3539

OpenTelemetry.Exporter.OpenTelemetryProtocol

• When using Attribute
  Limits
  the OTLP exporter will now send "dropped" counts where applicable (ex:
  dropped_attributes_count).
  (#3580)

OpenTelemetry.Exporter.Prometheus.AspNetCore

• Split up Prometheus projects based on its hosting mechanism,
  HttpListener and AspNetCore, into their own projects
  and assemblies.
  (#3430
  #3503
  #3507)

• Added IEndpointRouteBuilder extension methods to help with Prometheus
  middleware configuration on ASP.NET Core
  (#3295)

OpenTelemetry.Exporter.Prometheus.HttpListener

• Split up Prometheus projects based on its hosting mechanism,
  HttpListener and AspNetCore, into their own projects
  and assemblies.
  (#3430
  #3503
  #3507)
• Fixed bug
  #2840 by
  allowing + and * to be used in the URI prefixes (e.g. "http://*:9184").
  (#3521)