coreunstable-1.9.0-alpha.1

• NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.9.0-alpha.1

  • Fixed an issue with corrupted buffers when reading both OpenMetrics and
    plain text formats from Prometheus exporters.
    (#5623)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.Prometheus.HttpListener v1.9.0-alpha.1

  • Fixed an issue with corrupted buffers when reading both OpenMetrics and
    plain text formats from Prometheus exporters.
    (#5623)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Shims.OpenTracing v1.9.0-alpha.1

  No notable changes.

  See CHANGELOG for details.

core-1.9.0-alpha.1

• NuGet: OpenTelemetry v1.9.0-alpha.1

  • Experimental (pre-release builds only): Exposed ExemplarReservoir as a
    public API and added support for setting an ExemplarReservoir factory
    function when configuring a view (applies to individual metrics).
    (#5542)

  • Fixed a race condition for the experimental MetricPoint reclaim scenario
    (enabled via OTEL_DOTNET_EXPERIMENTAL_METRICS_RECLAIM_UNUSED_METRIC_POINTS)
    which could have led to a measurement being dropped.
    (#5546)

  • Experimental (pre-release builds only): Exposed
    FixedSizeExemplarReservoir as a public API to support custom implementations
    of ExemplarReservoir which may be configured using the
    ExemplarReservoirFactory property on the View API.
    (#5558)

  • The experimental APIs previously covered by OTEL1002 (Exemplar,
    ExemplarFilterType, MeterProviderBuilder.SetExemplarFilter,
    ReadOnlyExemplarCollection, ReadOnlyFilteredTagCollection, &
    MetricPoint.TryGetExemplars) will now be part of the public API and
    supported in stable builds.
    (#5607)

  • Fixed the nullable annotations for the SamplingResult constructors
    to allow null being supplied as attributes or traceStateString
    which has always been supported.
    (#5614)

  • The ExemplarFilter used by SDK MeterProviders for histogram metrics can
    now be controlled via the experimental
    OTEL_DOTNET_EXPERIMENTAL_METRICS_EXEMPLAR_FILTER_HISTOGRAMS environment
    variable. The supported values are: always_off, always_on, and
    trace_based.
    (#5611)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Api v1.9.0-alpha.1

  • Breaking change: Fix space character encoding from + to %20
    for baggage item values when propagating baggage as defined in
    W3C Baggage propagation format specification.
    (#5303)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Api.ProviderBuilderExtensions v1.9.0-alpha.1

  No notable changes.

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.Console v1.9.0-alpha.1

  No notable changes.

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.InMemory v1.9.0-alpha.1

  No notable changes.

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.OpenTelemetryProtocol v1.9.0-alpha.1

  • User-Agent header format changed from
    OTel-OTLP-Exporter-Dotnet/{NuGet Package Version}+{Commit Hash}
    to OTel-OTLP-Exporter-Dotnet/{NuGet Package Version}.
    (#5528)

  • Implementation of OTLP
    specification
    for propagating Span and SpanLink flags containing W3C trace flags and
    parent_is_remote information.
    (#5563)

  • Introduced experimental support for automatically retrying export to the otlp
    endpoint by storing the telemetry offline during transient network errors.
    Users can enable this feature by setting the
    OTEL_DOTNET_EXPERIMENTAL_OTLP_RETRY environment variable to disk. The
    default path where the telemetry is stored is obtained by calling
    Path.GetTempPath()
    or can be customized by setting
    OTEL_DOTNET_EXPERIMENTAL_OTLP_DISK_RETRY_DIRECTORY_PATH environment
    variable.
    (#5527)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.Zipkin v1.9.0-alpha.1

  No notable changes.

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Extensions.Hosting v1.9.0-alpha.1

  • Reverted obsoletion of OpenTelemetryBuilder.
    (#5571)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Extensions.Propagators v1.9.0-alpha.1

  No notable changes.

  See CHANGELOG for details.

core-1.8.1

OpenTelemetry

• Fixed an issue in Logging where unwanted objects (processors, exporters, etc.)
  could be created inside delegates automatically executed by the Options API
  during configuration reload.
  (#5514)

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Fix native AoT warnings in OpenTelemetry.Exporter.OpenTelemetryProtocol.
  (#5520)

Instrumentation.Http-1.8.1

OpenTelemetry.Instrumentation.Http

• Breaking Change: Fixed tracing instrumentation so that by default any
  values detected in the query string component of requests are replaced with
  the text Redacted when building the url.full tag. For example,
  ?key1=value1&key2=value2 becomes ?key1=Redacted&key2=Redacted. You can
  disable this redaction by setting the environment variable
  OTEL_DOTNET_EXPERIMENTAL_HTTPCLIENT_DISABLE_URL_QUERY_REDACTION to true.
  (#5532)

Instrumentation.AspNetCore-1.8.1

OpenTelemetry.Instrumentation.AspNetCore

• Breaking Change: Fixed tracing instrumentation so that by default any
  values detected in the query string component of requests are replaced with
  the text Redacted when building the url.query tag. For example,
  ?key1=value1&key2=value2 becomes ?key1=Redacted&key2=Redacted. You can
  disable this redaction by setting the environment variable
  OTEL_DOTNET_EXPERIMENTAL_ASPNETCORE_DISABLE_URL_QUERY_REDACTION to true.
  (#5532)

Instrumentation.Http-1.8.0

OpenTelemetry.Instrumentation.Http

• Fixed an issue for spans when server.port attribute was not set with
  server.address when it has default values (80 for HTTP and
  443 for HTTPS protocol).
  (#5419)

• Fixed an issue where the http.request.method_original attribute was not set
  on activity. Now, when http.request.method is set and the original method
  is converted to its canonical form (e.g., Get is converted to GET),
  the original value Get will be stored in http.request.method_original.
  The attribute is not set on .NET Framework for non canonical form of CONNECT,
  GET, HEAD, PUT, and POST. HTTP Client is converting these values
  to canonical form.
  (#5471)

Instrumentation.AspNetCore-1.8.0

OpenTelemetry.Instrumentation.AspNetCore

• Fixed an issue for spans when server.port attribute was not set with
  server.address when it has default values (80 for HTTP and
  443 for HTTPS protocol).
  (#5419)

• Fixed an issue where the http.request.method_original attribute was not set
  on activity. Now, when http.request.method is set and the original method
  is converted to its canonical form (e.g., Get is converted to GET),
  the original value Get will be stored in http.request.method_original.
  (#5471)

• Fixed the name of spans that have http.request.method attribute set to _OTHER.
  The span name will be set as HTTP {http.route} as per the specification.
  (#5484)

Instrumentation.SqlClient-1.8.0-beta.1

1.8.0-beta.1 of SqlClient instrumentation library

Instrumentation.GrpcNetClient-1.8.0-beta.1

1.8.0-beta.1 of GrpcNetClient instrumentation library

core-1.8.0

If you're interested in knowing all of the changes that went into 1.8.0 release, please go through the release notes of all the previous pre-release versions for 1.8.0:

• https://github.com/open-telemetry/opentelemetry-dotnet/releases/tag/core-1.8.0-beta.1
• https://github.com/open-telemetry/opentelemetry-dotnet/releases/tag/core-1.8.0-rc.1

Changes in 1.8.0:

OpenTelemetry.Exporter.Console

• Added support for ActivitySource.Version property.
  (#5472)

OpenTelemetry.Exporter.OpenTelemetryProtocol

• OtlpExporter will no longer throw an exception (even on .NET Core 3.1)
  when the System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport
AppContext switch is NOT set AND using OtlpExportProtocol.Grpc
  to send to an insecure ("http") endpoint.
  System.Net.Http.SocketsHttpHandler.Http2UnencryptedSupport
  is not required to be set when using .NET 5 or newer.
  (#5486)

• Replaced environment variable
  OTEL_DOTNET_EXPERIMENTAL_OTLP_ENABLE_INMEMORY_RETRY with
  OTEL_DOTNET_EXPERIMENTAL_OTLP_RETRY. OTEL_DOTNET_EXPERIMENTAL_OTLP_RETRY
  when set to in_memory will enable automatic retries in case of transient
  failures during data export to an OTLP endpoint.
  (#5495)