1.23.0

:rocket: (Enhancement)

• perf(sdk-trace-base): do not allocate arrays if resource has no pending async attributes #4576 @Samuron
• feat(sdk-metrics): added experimental synchronous gauge to SDK #4565 @clintonb
  • this change will become user-facing in an upcoming release

:bug: (Bug Fix)

• fix(sdk-metrics): increase the depth of the output to the console such that objects in the metric are printed fully to the console #4522 @JacksonWeber

1.22.0

:rocket: (Enhancement)

• feat(sdk-metrics): allow single bucket histograms #4456 @pichlermarc
• feat(instrumentation): Make init() method public #4418
• feat(context-zone-peer-dep, context-zone): support zone.js 0.13.x, 0.14.x #4469 @pichlermarc
• chore: Semantic Conventions export individual strings 4185

:bug: (Bug Fix)

• fix(sdk-metrics): handle zero bucket counts in exponential histogram merge #4459 @mwear
• fix(sdk-metrics): ignore NaN value recordings in Histograms #4455 @pichlermarc
  • fixes a bug where recording NaN on a histogram would result in the sum of bucket count values not matching the overall count
• fix(sdk-metrics): allow single bucket histograms #4456 @pichlermarc
  • fixes a bug where Meter.createHistogram() with the advice explicitBucketBoundaries: [] would throw
• fix(context-zone-peer-dep, context-zone): support zone.js 0.13.x, 0.14.x #4469 @pichlermarc
  • fixes a bug where old versions of zone.js affected by https://github.com/angular/angular/issues/53507 would be pulled in

:books: (Refine Doc)

• docs: shorten readme sections #4460 @legendecas

1.21.0

:rocket: (Enhancement)

• feat(sdk-metrics): add constructor option to add metric readers #4427 @pichlermarc
  • deprecates MeterProvider.addMetricReader() please use the constructor option readers instead.

:bug: (Bug Fix)

• fix(sdk-trace-base): ensure attribute value length limit is enforced on span creation #4417 @pichlermarc
• fix(sdk-trace-base): Export processed spans while exporter failed #4287 @Zirak

:house: (Internal)

• chore(opentelemetry-context-zone-peer-dep): support zone.js ^v0.13.0 #4320
• refactor(core): drop unnecessary assignment of HOSTNAME #4421 @pichlermarc
• test(opentelemetry-context-zone-peer-dep): transpile zone.js in tests #4423 @legendecas

1.20.0

:rocket: (Enhancement)

• perf(otlp-transformer): skip unnecessary base64 encode of span contexts #4343 @seemk
• feat(sdk-trace-base): improve log messages when dropping span events #4223 @mkubliniak

1.19.0

:rocket: (Enhancement)

• feat: add node 20 support #4336 @dyladan

:house: (Internal)

• chore: type reference on zone.js #4257 @legendecas
• chore: no need for 'packages' in lerna.json #4264 @trentm
• test: add node 20 to test matrix #4336 @dyladan

:bug: (Bug Fix)

• fix(api-logs): allow for TimeInput type for LogRecord timestamps #4345
• fix(sdk-trace-web): only access location if it is defined #4063
• fix(sdk-trace-base): processor onStart called with a span having empty attributes

1.18.1

:bug: (Bug Fix)

• fix(sdk-metrics): hand-roll MetricAdvice type as older API versions do not include it #4260

1.18.0

:rocket: (Enhancement)

• feat(metrics): prototype experimental advice support #3876 @legendecas

:bug: (Bug Fix)

• fix(core): remove re-export of version.ts #4225 @david-luna

:house: (Internal)

• chore: track package-lock.json #4238 @legendecas
  • Switched to npm workspaces to bootstrap dependencies.

1.17.1

:bug: (Bug Fix)

• fix(sdk-trace-base): BatchSpanProcessor flushes when maxExportBatchSize is reached #3958 @nordfjord
• fix(sdk-metrics): allow instrument names to contain '/' #4155
• fix(sdk-metrics): prevent per-reader storages from keeping unreported accumulations in memory #4163 @pichlermarc
  • fixes a memory leak which occurred when two or more MetricReader instances are registered to a MeterProvider
• fix(sdk-metrics): do not report empty scopes and metrics #4135 @pichlermarc
  • Instruments that were created, but did not have measurements will not be exported anymore
  • Meters (Scopes) that were created, but did not have any instruments with measurements under them will not be exported anymore.
• fix(exporter-zipkin): round duration to the nearest int in annotations to be compliant with zipkin protocol #4167 @FelipeEmerim

:books: (Refine Doc)

• docs(contributing): added guidelines for adding benchmark tests #4169

:house: (Internal)

• test: added a performance benchmark test for span creation #4105
• test: added a workflow to run performance benchmark tests automatically #4144

1.17.0

:bug: (Bug Fix)

• Revert "feat(api): add attributes argument to recordException API #4071"
  • This feature was an unintentional breaking change introduced with API 1.5.0
  • This PR updates all SDK packages to allow API 1.6.0, where this change has been reverted.

1.16.0

:rocket: (Enhancement)

• feat(sdk-metrics): implement MetricProducer specification #4007
• feat: update PeriodicExportingMetricReader and PrometheusExporter to accept optional metric producers #4077 @aabmass

:bug: (Bug Fix)

• fix(exporter-zipkin): rounding duration to the nearest int to be compliant with zipkin protocol #4064 @n0cloud
• fix(sdk-metrics): metric names should be case-insensitive

:books: (Refine Doc)

• docs(guidelines): add dependencies guidelines #4040