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CHANGELOG.md

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Release History

0.5.0 / 2019-10-14

This update brings experimental support for the OpenCensus Stats API. Note that Stats support is currently partial and not well-tested.

Other changes:

  • Attributes in the Trace API can now be floats.

0.4.0 / 2018-10-22

This is an important update that includes a number of fixes and brings the library up to date with the latest OpenCensus specification.

Backward-incompatible changes:

  • Local parent span's sampling decision is propagated to children by default, to match the current sampling spec.
  • It is no longer possible to change a sampling decision after a SpanBuilder has been created, to match the current sampling spec.
  • Renamed MaxQPS sampler to RateLimiting, and modified the implementation to match the current spec.
  • Probability sampler defaults to 1 in 10,000.
  • true or false may be passed as a sampler, as shortcuts for AlwaysSample or NeverSample.
  • Standard samplers are now thread-safe.
  • HTTP status codes are properly translated to OpenCensus status codes, in particular for spans generated by the Faraday and Rack middleware.
  • Faraday and Rack middleware produce attributes matching the OpenCensus HTTP spec instead of the Stackdriver Trace service spec. The Stackdriver exporter now translates these attributes accordingly.
  • Update standard trace context HTTP header to "traceparent" following updated spec.

Other fixes:

  • Allow requiring "opencensus/trace" directly.
  • Return SpanContext objects when block not given.
  • FaradayMiddleware closes span if Faraday raises an exception.

0.3.1 / 2018-04-13

  • Clean unneeded files from the gem

0.3.0 / 2018-03-26

  • SpanContext#build_contained_spans honors sampling bit.
  • Use AlwaysSample as the default sampler.
  • Support the Span.kind field.

0.2.2 / 2018-03-09

  • Railtie now adds the middleware at the end of the stack by default, and provides a config that can customize the position
  • Provided a multi exporter
  • Document exporter interface
  • Fix some broken links in the documentation

0.2.1 / 2018-03-05

  • Clarify Ruby version requirement (2.2+)
  • Fix exceptions in the config library on Ruby 2.2 and 2.3.
  • Automatically require opencensus base library from standard integrations.

0.2.0 / 2018-02-13

  • Span creation sets the "same_process_as_parent_span" field if possible.
  • The "stack_trace_hash_id" field was missing from the interfaces. Fixed.
  • Nullability of a few fields did not match the proto specs. Fixed.
  • Fixed some documentation errors and omissions.

0.1.0 / 2018-01-12

Initial release of the core library, including:

  • Trace interfaces
  • Rack integration
  • Rails integration
  • Faraday integration
  • Logging exporter