tracing-serde

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<a id = "0.2.0-breaking"></a>

Breaking Changes

• Correct SerializeField definition and doc formatting (#3040) SerializeField has gained a generic lifetime parameter.

Fixed

• Implement AsSerde for FieldSet (#2241)
• breaking Correct SerializeField definition and doc formatting (#3040)

Changed

• Bump MSRV to 1.63 ([#2793])

Added

• Make trace and metrics features optional
• ExportResult as specified in the specification
• Add Futures compatibility API
• Added serde serialize support to SpanData
• Separate OpenTelemetry Jaeger crate

Changed

• Rename HttpTraceContextPropagator to TraceContextPropagator
• Rename HttpB3Propagator to B3Propagator
• Switch to Apache 2 license
• Resolve agent addresses to allow non-static IP
• Remove tracer name prefix from span name

Removed

• Remove add_link from spans

This release adds experimental support for recording structured field values using the valuable crate. See this blog post for details on valuable.

Note that valuable support currently requires --cfg tracing_unstable. See the documentation for details.

Added

• valuable: Experimental support for serializing user-defined types using valuable and valuable-serde (#1862)
• Support for serializing f64 values (#1507)

Fixed

• Fixed incorrect size hint in SerializeFieldSet (#1333)
• A number of documentation fixes

Thanks to @akinnane and @maxburke for contributing to this release!

Changed

• Ensure spans are always send and sync
• Allow static lifetimes for span names
• Improve KeyValue ergonomics

Added

• SerdeMapVisitor::finish to complete serializing the visited objects (#892)
• SerdeMapVisitor::take_serializer to return the serializer wrapped by a SerdeMapVisitor (#892)

Added

• Implement global provider

Added

• Made SerdeMapVisitor public (#599)
• Made SerdeStructVisitor public (#599)

Added

• Documentation and API cleanup
• Tracking of active spans via thread local span stack

• Initial release

Initial debug alpha