v1.4.0 and v0.28.0

What's Changed

• Allow users to override useragent by @dashpole in #322
• Address a bunch of small TODOs by @dashpole in #314
• Update release.go for latest release by @dashpole in #321
• Rename files to be easier to understand, and add comment by @dashpole in #327
• Fix formatting of summary quantile labels to match prometheus by @dashpole in #325
• Update opentelemetry collector dependency, and switch away from deprecated functions. by @dashpole in #328
• Sanitize label keys for metric descriptors by @dashpole in #331
• Add attribute mapping function by @dashpole in #324
• Normalize sums prior to exporting them by @dashpole in #323
• Do not use IsZero on timestamps obtained from pdata by @dashpole in #336
• Send summary counts as doubles instead of integers by @dashpole in #338
• Drop data points with no value set by @dashpole in #339
• Handle NaN sums in histograms and exponential histograms by @dashpole in #340
• Fix typos around integration tests by @damemi in #345
• Update fixtures based on upstream changes to the prometheus receiver by @dashpole in #346
• feat(propagator): create a new one-way propagator by @muncus in #343
• Demonstrate that integration tests aren't catching failures by @dashpole in #349
• Update dependencies by @dashpole in #347
• Address remaining nits from #347 by @dashpole in #351
• Prepare for releasing v1.4.0 and v0.28.0 by @dashpole in #353

New Contributors

• @muncus made their first contribution in #343

Full Changelog: v1.3.0...v1.4.0

v1.3.0

Stable modules (exporter/trace) released at v1.3.0
Unstable modules (everything else) released at v0.26.0

Includes the new exporter/collector module.

v1.0.0

prepare for releasing 1.0.0 and 0.24.0 (#213)

* prepare for releasing 1.0.0 and 0.24.0

v0.22.0 and v1.0.0-RC2

Breaking changes

• Simplify exporter creation functions (#193, #194).

Before	After
tp, shutdown, err := exporter.InstallNewPipeline( exporterOpts, sdkOpts..., ) // handle error defer shutdown()	exporter, err := exporter.New(exporterOpts) // handle error tp := sdktrace.NewTracerProvider( sdktrace.WithBatcher(exporter), sdkOpts..., ) defer tp.Shutdown(context.Background()) otel.SetTracerProvider(tp)
tp, shutdown, err := exporter.NewExportPipeline( exporterOpts, sdkOpts..., ) // handle error defer shutdown()	exporter, err := exporter.New(exporterOpts) // handle error tp := sdktrace.NewTracerProvider( sdktrace.WithBatcher(exporter), sdkOpts..., ) defer tp.Shutdown(context.Background())

• Remove ExportCustomSpans and associated interface which were introduced in -RC1 (#187).
• Un-export string constants from OTel semantic conventions (#192).
• Remove DisplayNameFormatter and DefaultTraceAttributes from trace exporter options (#188, #191)
• Use OTel ErrorHandler for handling errors (#196).

Enhancements

• Update to OTel-go v1.0.0-RC2 + v0.22.0 (#199) and other miscellaneous dependencies (#197).
• Remove unused Location field from trace options (#195).

v0.21.0 and v1.0.0-RC1

Breaking changes

• Trace exporter now expects instances of the ReadOnlySpan interface rather than the SpanContext struct.

New features

Implemented in #173, thanks to contributor @0xc0d!

• Trace exporter is compatible with v1.0.0-RC1 of opentelemetry-go stable components
• Metric exporter is compatible with v0.21.0 of opentelemetry-go unstable components

Additional details on the mix of version numbers

Enhancements

• Map OTel span kind to Cloud Trace (#179, #180)
• Map OTel span links to Cloud Trace (#176, #178)
• Add end-to-end tests (#177)

v0.20.1

Bug fixes

• Don't export empty time series (#171, thanks @ryanlaycock)

v0.20.0

New features

• Compatible with version v0.20.0 of opentelemetry-go

Enhancements

• Add ability to set default trace attributes (#160, h/t to contributor @filip-ph-johansson)
• Improve documentation and examples (#161, #162)
• Remove unused code (#163)

v0.19.0

New features

• When exported to Google Cloud Trace, spans are named <name> instead of Span.<kind>.<name>, which aligns with exporters in other languages (#109, #151, #155)
• Compatible with version 0.19.0 of opentelemetry-go (#158)

v0.18.0

New features

• Compatible with version v0.18.0 of opentelemetry-go

v0.17.0

Breaking changes

• Remove exporter-side bundling of traces and remove unused configuration parameters (#149, fixes #100). To recover the performance benefits of bundling, please use a BatchSpanProcessor.

New features

• Set User-Agent header correctly on requests to GCP APIs (#148)
• Compatible with v0.17.0 of opentelemetry-go (#144, #145)

Bugfixes

• Map OTel span status codes correctly to Google Cloud Trace API status codes (#150, fixes #143)

Miscellaneous

• Better verification of example code stored outside this repo (#140)
• Better verification of copyright headers (#139)