1.0.0-rc9.2 of non-core

Same bits as previous release (1.0.0-rc9.1), except bumps the requires core package versions to be 1.2.0-rc5

1.2.0-rc5 of Core Components

This is the final RC for 1.2.0 release.
OpenTelemetry

• Removed the Temporality setting on MetricReader and replaced it with
  TemporalityPreference. This is a breaking change.
  TemporalityPreference is used to determine the AggregationTemporality
  used on a per-instrument kind basis. Currently, there are two preferences:

  • Cumulative: Measurements from all instrument kinds are aggregated using
    AggregationTemporality.Cumulative.
  • Delta: Measurements from Counter, ObservableCounter, and Histogram
    instruments are aggregated using AggregationTemporality.Delta. When
    UpDownCounters are supported with
    DiagnosticSource version 7.0 onwards,
    they will be aggregated using AggregationTemporality.Cumulative.
    (#3153)

• Fix issue where ExplicitBucketHistogramConfiguration could be used to
  configure metric streams for instruments that are not histograms. Currently,
  it is not possible to change the aggregation of an instrument with views. This
  may be possible in the future.
  (#3126)

• Conformed to the specification to ensure that each view that an instrument
  matches results in a new metric stream. With this change it is possible for
  views to introduce conflicting metric streams. Any conflicts encountered will
  result in a diagnostic log.
  (#3148)

OpenTelemetry.Api

OpenTelemetry.Exporter.Console

OpenTelemetry.Exporter.InMemory

OpenTelemetry.Exporter.Jaeger

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Updated underlying proto files to
  v0.16.0.
  The LogRecord.Name field was removed. The CategoryName provided
  when calling CreateLogger previously populated this field. For now,
  CategoryName is no longer exported via OTLP. It will be reintroduced
  in the future as an attribute.

OpenTelemetry.Exporter.Prometheus

OpenTelemetry.Exporter.Zipkin

1.0.0-rc9.1 of non-core componets

This is mostly just changing the versioning.

This version is 1.0.0-rc9.1, with next releases taking 1.0.0-rc9.2, 1.0.0-rc9.3 and so on. The previous version 1.0.0-rc10 is invalid, and will be unlisted.
See discussion on this: #2991 (comment)

Changes:
OpenTelemetry.Exporter.OpenTelemetryProtocol.Logs

OpenTelemetry.Exporter.ZPages

OpenTelemetry.Extensions.Hosting

OpenTelemetry.Instrumentation.AspNet

OpenTelemetry.Instrumentation.AspNet.TelemetryHttpModule

OpenTelemetry.Instrumentation.AspNetCore

OpenTelemetry.Instrumentation.GrpcNetClient

OpenTelemetry.Instrumentation.Http

• Updated TracerProviderBuilderExtensions.AddHttpClientInstrumentation to support
  IDeferredTracerProviderBuilder and IOptions<HttpClientInstrumentationOptions>
  (#3051)

OpenTelemetry.Instrumentation.SqlClient

OpenTelemetry.Instrumentation.StackExchangeRedis

OpenTelemetry.Shims.OpenTracing

1.2.0-rc4 of core components

OpenTelemetry

• The PeriodicExportingMetricReader now accepts an
  ExportIntervalMilliseconds of -1 indicating an infinite export interval
  period.
  (#2982)

• Added the PeriodicExportingMetricReaderOptions.ExportTimeoutMilliseconds
  option.
  (#3038)

• Removed MetricReaderType. This enumeration was previously used when
  configuing a metric reader with an exporter to configure whether the export
  cycle would be periodic or manual (i.e., requiring a explicit call to flush
  metrics). This change affects the push-based metric exporters: OTLP, Console,
  and InMemory. For these exporters, a manual export cycle can now be achieved
  by setting PeriodicExportingMetricReaderOptions.ExportIntervalMilliseconds
  to -1.
  (#3038)

• Marked members of the MetricPoint struct which do not mutate state as
  readonly
  (#3065)

• [Bug fix] OpenTelemetryLoggerProvider is now unaffected by changes to
  OpenTelemetryLoggerOptions after the LoggerFactory is built.
  (#3055)

OpenTelemetry.Api

OpenTelemetry.Exporter.Console

• Added StatusCode, StatusDescription support to
  ConsoleActivityExporter.
  (#2929
  #3061)

• AddConsoleExporter extension method by default sets up exporter
  to export metrics every 10 seconds.

OpenTelemetry.Exporter.InMemory

OpenTelemetry.Exporter.Jaeger

• Added support for Activity Status and StatusDescription which were
  added to Activity from System.Diagnostics.DiagnosticSource version 6.0.
  Prior to version 6.0, setting the status of an Activity was provided by the
  .NET OpenTelemetry API via the Activity.SetStatus extension method in the
  OpenTelemetry.Trace namespace. Internally, this extension method added the
  status as tags on the Activity: otel.status_code and otel.status_description.
  Therefore, to maintain backward compatibility, the exporter falls back to using
  these tags to infer status.
  (#3073)

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Added support for Activity Status and StatusDescription which were
  added to Activity from System.Diagnostics.DiagnosticSource version 6.0.
  Prior to version 6.0, setting the status of an Activity was provided by the
  .NET OpenTelemetry API via the Activity.SetStatus extension method in the
  OpenTelemetry.Trace namespace. Internally, this extension method added the
  status as tags on the Activity: otel.status_code and otel.status_description.
  Therefore, to maintain backward compatibility, the exporter falls back to using
  these tags to infer status.
  (#3100)

• Fixed OTLP metric exporter to default to a periodic 60 second export cycle.
  A bug was introduced in #2717 that caused the OTLP metric export to default
  to a manual export cycle (i.e., requiring an explicit flush). A workaround
  for this bug has been provided
  here.
  (#2982)

• Bumped minimum required gRPC version (2.23.0 to 2.44.0).
  Fixes issues building on Apple Silicon (M1).
  (#2963)

• Fixed issue where the configuration of an OTLP exporter could be changed
  after instantiation by altering the original OtlpExporterOptions provided.
  (#3066)

• TraceExporter to stop populating DeprecatedCode in OTLP Status.
  OpenTelemetry.Exporter.Prometheus

OpenTelemetry.Exporter.Zipkin

• Added support for Activity Status and StatusDescription which were
  added to Activity from System.Diagnostics.DiagnosticSource version 6.0.
  Prior to version 6.0, setting the status of an Activity was provided by the
  .NET OpenTelemetry API via the Activity.SetStatus extension method in the
  OpenTelemetry.Trace namespace. Internally, this extension method added the
  status as tags on the Activity: otel.status_code and otel.status_description.
  Therefore, to maintain backward compatibility, the exporter falls back to using
  these tags to infer status.
  (#3003)

1.0.0-rc10 of non-core

Most packages have no change from previous release. Only updates to use the newest API/SDK reference.

OpenTelemetry.Extensions.Hosting

• Fixes an issue where the initialization of some aspects of the SDK can be
  delayed when using the AddOpenTelemetryTracing and
  AddOpenTelemetryMetrics methods. Namely, self-diagnostics and the default
  context propagator responsible for propagating trace context and baggage.
  (#2901)

OpenTelemetry.Instrumentation.AspNet

OpenTelemetry.Instrumentation.AspNet.TelemetryHttpModule

OpenTelemetry.Instrumentation.AspNetCore

OpenTelemetry.Instrumentation.GrpcNetClient

OpenTelemetry.Instrumentation.Http

OpenTelemetry.Instrumentation.SqlClient

OpenTelemetry.Instrumentation.StackExchangeRedis

OpenTelemetry.Shims.OpenTracing

1.2.0-RC3 of core components

OpenTelemetry

• Instantiating multiple metric instruments with the same name and also
  identical in all other respects - same type, description, and unit - result
  in a single metric stream aggregating measurements from all the identical
  instruments.

  Instantiating multiple metric instruments with the same name but differ in
  some respect - different type, description, or unit - will result in a
  separate metric stream for each distinct instrument.

  (#2916)

• The Meter property on OpenTelemetry.Metrics.Metric has been removed.
  It now has MeterName and MeterVersion properties.
  (#2916)

• Added support for implementing custom ResourceDetector.
  (#2949
  #2897)

• Perf improvement for Histogram and HistogramSumCount by implementing lock-free
  updates.
  (#2951
  #2961)

OpenTelemetry.Api

• Improved wildcard support for AddSource, AddMeter to cover ? (which
  matches exactly one character).
  (#2875)

OpenTelemetry.Exporter.Console

• Removes metric related configuration options from ConsoleExporterOptions.
  MetricReaderType, PeriodicExporterMetricReaderOptions, and Temporality
  are now configurable via the MetricReaderOptions.
  (#2929)

OpenTelemetry.Exporter.InMemory

• Adds the ability to configure MetricReaderOptions via the
  AddInMemoryExporter extension method.
  (#2931)

OpenTelemetry.Exporter.Jaeger

• Change supported values for OTEL_EXPORTER_JAEGER_PROTOCOL
  Supported values: udp/thrift.compact and http/thrift.binary defined
  in the specification.
  (#2914)
• Change handling of OTEL_EXPORTER_JAEGER_ENDPOINT to require the path to
  post. Previous versions of this library would append /api/traces to the
  value specified in this variable, but now the application author must do so.
  This change must also be made if you manually configure the
  JaegerExporterOptions class - the Endpoint must now include the path.
  For most environments, this will be /api/traces. The effective default
  is still http://localhost:14268/api/traces. This was done to match
  the clarified specification)
  (#2847)

OpenTelemetry.Exporter.OpenTelemetryProtocol

• LogExporter bug fix to handle null EventName.
  (#2871)

• Fixed the default endpoint for OTLP exporter over HTTP/Protobuf.
  The default value is http://localhost:4318.
  (#2868)

• Removes metric related configuration options from OtlpExporterOptions.
  MetricReaderType, PeriodicExporterMetricReaderOptions, and Temporality
  are now configurable via the MetricReaderOptions.
  (#2717)

• Exporter bug fix to not throw exceptions from Export method.
  (#2915)

• OTLP LogExporter modified to not drop the whole batch if a single log from the
  batch is invalid.
  (#2934)

OpenTelemetry.Exporter.OpenTelemetryProtocol.Logs

OpenTelemetry.Exporter.Prometheus

OpenTelemetry.Exporter.Zipkin

• Modified Export method to catch all exceptions.
  (#2935)

1.0.0-rc9 of Instrumentation libraries and other non-core components

Instrumentation Libraries, OT shim, Hosting packages.
Refer to individual changelog.md files for details.

1.2.0-rc2 of core components

API, SDK, and Exporters.
Refer to individual changelog.md files for details.

1.2.0-rc1 - Core components

OpenTelemetry

• Prevent accessing activity Id before sampler runs in case of legacy
  activities.
  (2659)

• Added ReadOnlyTagCollection and expose Tags on MetricPoint instead of
  Keys+Values
  (#2642)

• Refactored MetricPoint and added public methods: GetBucketCounts,
  GetExplicitBounds, GetHistogramCount, and GetHistogramSum
  (#2657)

• Remove MetricStreamConfiguration.Aggregation, as the feature to customize
  aggregation is not implemented yet.
  (#2660)

• Removed the public property HistogramMeasurements and added a public method
  GetHistogramBuckets instead. Renamed the class HistogramMeasurements to
  HistogramBuckets and added an enumerator of type HistogramBucket for
  enumerating BucketCounts and ExplicitBounds. Removed GetBucketCounts and
  GetExplicitBounds methods from MetricPoint.
  (#2664)

• Refactored temporality setting to align with the latest spec.
  (#2666)

• Removed the public properties LongValue, DoubleValue, in favor of their
  counterpart public methods GetSumLong, GetSumDouble,
  GetGaugeLastValueLong, GetGaugeLastValueDouble.
  (#2667)

• MetricType modified to reserve bits for future types.
  (#2693)

OpenTelemetry.Api

OpenTelemetry.Exporter.Console

• Added configuration options for MetricReaderType to allow for configuring
  the ConsoleMetricExporter to export either manually or periodically.
  (#2648)

OpenTelemetry.Exporter.InMemory

OpenTelemetry.Exporter.Jaeger

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Added configuration options for MetricReaderType to allow for configuring
  the OtlpMetricExporter to export either manually or periodically.
  (#2674)

• The internal log message used when OTLP export client connection failure occurs,
  will now include the endpoint uri as well.
  (#2686)

• Support HttpProtobuf protocol with metrics & added HttpClientFactory
  option
  (#2696)

OpenTelemetry.Exporter.Prometheus

• Bug fix for handling Histogram with empty buckets.
  (#2651)

1.2.0-beta2 of core components

Please note that "1.2.0-beta2.1" is the version of the nugets.

OpenTelemetry

• Renamed HistogramConfiguration to ExplicitBucketHistogramConfiguration
  and changed its member BucketBounds to Boundaries.
  (#2638)

• Metrics with the same name but from different meters are allowed.
  (#2634)

• Metrics SDK will not provide inactive Metrics to delta exporter.
  (#2629)

• Histogram bounds are validated when added to a View.
  (#2573)

• Changed BatchExportActivityProcessorOptions constructor to throw
  FormatException if it fails to parse any of the supported environment
  variables.

• Added BaseExporter.ForceFlush.
  (#2525)

• Exposed public Batch(T[] items, int count) constructor on Batch<T> struct
  (#2542)

• Added wildcard support for AddMeter.
  (#2459)

• Add support for multiple Metric readers
  (#2596)

• Add ability to configure MaxMetricStreams, MaxMetricPointsPerMetricStream
  (#2635)

OpenTelemetry.Api

• Updated System.Diagnostics.DiagnosticSource to version 6.0.0.
  (#2582)

OpenTelemetry.Exporter.Console

OpenTelemetry.Exporter.InMemory

OpenTelemetry.Exporter.Jaeger

• Changed JaegerExporterOptions constructor to throw
  FormatException if it fails to parse any of the supported environment
  variables.

• Added support for sending spans directly to a Jaeger Collector over HTTP
  (#2574)

OpenTelemetry.Exporter.OpenTelemetryProtocol

• Changed OtlpExporterOptions constructor to throw
  FormatException if it fails to parse any of the supported environment
  variables.

• Changed OtlpExporterOptions.MetricExportIntervalMilliseconds to default
  60000 milliseconds.
  (#2641)

OpenTelemetry.Exporter.Prometheus

• Added scrape endpoint response caching feature &
  ScrapeResponseCacheDurationMilliseconds option
  (#2610)

OpenTelemetry.Exporter.Zipkin

• Changed ZipkinExporterOptions constructor to throw
  FormatException if it fails to parse any of the supported environment
  variables.

New Contributors

• @rkbodenner made their first contribution in #2488
• @ndrwrbgs made their first contribution in #2550
• @cartermp made their first contribution in #2603
• @chertby made their first contribution in #2630
• @svetlanabrennan made their first contribution in #2641