open-telemetry/opentelemetry-dotnet coreunstable-1.21.0-beta.1

on GitHub

The following changes are from the previous release 1.20.1-beta.1.

• NuGet: OpenTelemetry.Exporter.Prometheus.AspNetCore v1.21.0-beta.1

  • Fixed OpenMetrics scrape responses containing a # UNIT line whose unit is
    not an underscore-separated suffix of the metric family name (for example
    auth.failedlogins with the unit logins), which caused scrapers such as
    Prometheus to reject the whole response. The # UNIT line is now omitted
    for such metrics; exported metric names are unchanged.
    (#7993)

  • Fixed scrapes that negotiate different response formats within the
    ScrapeResponseCacheDurationMilliseconds window each triggering their own
    metrics collection. A collection now also writes the response for other
    formats whose scrapes arrived alongside a previous collection, so scrapes
    that keep arriving together are served from the cache. Fresh cached responses
    remain available while another format is serialized, even if that
    serialization fails.
    (#7994)

  • Fixed array- and map-valued attributes being serialized as the .NET type
    name (e.g. System.Byte[], System.Int32[]) instead of being JSON-encoded
    as per the specification. byte[]-valued attributes are now
    Base64-encoded, and other array- and map-valued attributes are now
    JSON-encoded.
    (#7694)

  • Fixed arrays of string-valued key/value pairs being
    serialized as JSON arrays of strings instead of JSON objects.
    (#7694)

  • Fixed scrape clients which stop reading their response delaying other
    scrapes until ScrapeResponseTimeoutMilliseconds elapses.
    (#8041)

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  • Fixed a scrape response containing the same series (metric name and labels)
    more than once, which causes Prometheus to reject the whole response, such as
    when metric or tag names are the same once escaped, tag names become the same
    when UTF-8 encoded, or the scope information is disabled. Duplicate series are
    now dropped, and a warning event is written.
    A metric which has the name of a sample that is generated for another one
    (for example _sum of a histogram) is now dropped, and a warning event is
    written.
    (#8076)

  • An OutOfMemoryException thrown while converting an attribute value to a
    string is no longer swallowed and the attribute dropped; it now propagates.
    (#7929)

  • Updated OpenTelemetry core component version(s) to 1.21.0.
    (#8119)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Exporter.Prometheus.HttpListener v1.21.0-beta.1

  • Fixed OpenMetrics scrape responses containing a # UNIT line whose unit is
    not an underscore-separated suffix of the metric family name (for example
    auth.failedlogins with the unit logins), which caused scrapers such as
    Prometheus to reject the whole response. The # UNIT line is now omitted
    for such metrics; exported metric names are unchanged.
    (#7993)

  • Fixed scrapes that negotiate different response formats within the
    ScrapeResponseCacheDurationMilliseconds window each triggering their own
    metrics collection. A collection now also writes the response for other
    formats whose scrapes arrived alongside a previous collection, so scrapes
    that keep arriving together are served from the cache. Fresh cached responses
    remain available while another format is serialized, even if that
    serialization fails.
    (#7994)

  • Fixed array- and map-valued attributes being serialized as the .NET type
    name (e.g. System.Byte[], System.Int32[]) instead of being JSON-encoded
    as per the specification. byte[]-valued attributes are now
    Base64-encoded, and other array- and map-valued attributes are now
    JSON-encoded.
    (#7694)

  • Fixed arrays of string-valued key/value pairs being
    serialized as JSON arrays of strings instead of JSON objects.
    (#7694)

  • Fixed scrape clients which stop reading their response delaying other
    scrapes until ScrapeResponseTimeoutMilliseconds elapses.
    (#8041)

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  • Fixed exporter option initialization failing when environment variable access
    is denied.
    (#8070)

  • Fixed a scrape response containing the same series (metric name and labels)
    more than once, which causes Prometheus to reject the whole response, such as
    when metric or tag names are the same once escaped, tag names become the same
    when UTF-8 encoded, or the scope information is disabled. Duplicate series are
    now dropped, and a warning event is written.
    A metric which has the name of a sample that is generated for another one
    (for example _sum of a histogram) is now dropped, and a warning event is
    written.
    (#8076)

  • An OutOfMemoryException thrown while converting an attribute value to a
    string is no longer swallowed and the attribute dropped; it now propagates.
    (#7929)

  • Reduce allocations during Accept header negotiation.
    (#8094)

  • Updated OpenTelemetry core component version(s) to 1.21.0.
    (#8119)

  See CHANGELOG for details.

• NuGet: OpenTelemetry.Shims.OpenTracing v1.21.0-beta.1

  • Breaking Change Dropped support for net8.0 and net9.0.
    (#6899)

  • Add support for .NET 11.0.
    (#6899)

  • Updated OpenTelemetry core component version(s) to 1.21.0.
    (#8119)

  See CHANGELOG for details.