Changes by Version ================== 2.20.1 (2019-11-08) ------------------- Minor patch via https://github.com/jaegertracing/jaeger-client-go/pull/468 - Make `AdaptiveSamplerUpdater` usable with default values; Resolves #467 - Create `OperationNameLateBinding` sampler option and config option - Make `SamplerOptions` var of public type, so that its functions are discoverable via godoc 2.20.0 (2019-11-06) ------------------- ## New Features - Allow all in-process spans of a trace to share sampling state (#443) -- Prithvi Raj Sampling state is shared between all spans of the trace that are still in memory. This allows implementation of delayed sampling decisions (see below). - Support delayed sampling decisions (#449) -- Yuri Shkuro This is a large structural change to how the samplers work. It allows some samplers to be executed multiple times on different span events (like setting a tag) and make a positive sampling decision later in the span life cycle, or even based on children spans. See [README](./README.md#delayed-sampling) for more details. There is a related minor change in behavior of the adaptive (per-operation) sampler, which will no longer re-sample the trace when `span.SetOperation()` is called, i.e. the operation used to make the sampling decision is always the one provided at span creation. - Add experimental tag matching sampler (#452) -- Yuri Shkuro A sampler that can sample a trace based on a certain tag added to the root span or one of its local (in-process) children. The sampler can be used with another experimental `PrioritySampler` that allows multiple samplers to try to make a sampling decision, in a certain priority order. - [log/zap] Report whether a trace was sampled (#445) -- Abhinav Gupta - Allow config.FromEnv() to enrich an existing config object (#436) -- Vineeth Reddy ## Minor patches - Expose Sampler on Tracer and accept sampler options via Configuration (#460) -- Yuri Shkuro - Fix github.com/uber-go/atomic import (#464) -- Yuri Shkuro - Add nodejs to crossdock tests (#441) -- Bhavin Gandhi - Bump Go compiler version to 1.13 (#453) -- Yuri Shkuro 2.19.0 (2019-09-23) ------------------- - Upgrade jaeger-lib to 2.2 and unpin Prom client (#434) -- Yuri Shkuro 2.18.1 (2019-09-16) ------------------- - Remove go.mod / go.sum that interfere with `go get` (#432) 2.18.0 (2019-09-09) ------------------- - Add option "noDebugFlagOnForcedSampling" for tracer initialization [resolves #422] (#423) 2.17.0 (2019-08-30) ------------------- - Add a flag for firehose mode (#419) - Default sampling server URL to agent (#414) - Update default sampling rate when sampling strategy is refreshed (#413) - Support "Self" Span Reference (#411) - Don't complain about blank service name if tracing is Disabled (#410) Yuri - Use IP address from tag if exist (#402) - Expose span data to custom reporters [fixes #394] (#399) - Fix the span allocation in the pool (#381) 2.16.0 (2019-03-24) ------------------- - Add baggage to B3 codec (#319) - Add support for 128bit trace ids to zipkin thrift spans. (#378) - Update zipkin propagation logic to support 128bit traceIDs (#373) - Accept "true" for the x-b3-sampled header (#356) - Allow setting of PoolSpans from Config object (#322) - Make propagators public to allow wrapping (#379) - Change default metric namespace to use relevant separator for the metric backend (#364) - Change metrics prefix to jaeger_tracer and add descriptions (#346) - Bump OpenTracing to ^1.1.x (#383) - Upgrade jaeger-lib to v2.0.0 (#359) - Avoid defer when generating random number (#358) - Use a pool of rand.Source to reduce lock contention when creating span ids (#357) - Make JAEGER_ENDPOINT take priority over JAEGER_AGENT_XXX (#342) 2.15.0 (2018-10-10) ------------------- - Fix FollowsFrom spans ignoring baggage/debug header from dummy parent context (#313) - Make maximum annotation length configurable in tracer options (#318) - Support more environment variables in configuration (#323) - Print error on Sampler Query failure (#328) - Add an HTTPOption to support custom http.RoundTripper (#333) - Return an error when an HTTP error code is seen in zipkin HTTP transport (#331) 2.14.0 (2018-04-30) ------------------- - Support throttling for debug traces (#274) - Remove dependency on Apache Thrift (#303) - Remove dependency on tchannel (#295) (#294) - Test with Go 1.9 (#298) 2.13.0 (2018-04-15) ------------------- - Use value receiver for config.NewTracer() (#283) - Lock span during jaeger thrift conversion (#273) - Fix the RemotelyControlledSampler so that it terminates go-routine on Close() (#260) - Added support for client configuration via env vars (#275) - Allow overriding sampler in the Config (#270) 2.12.0 (2018-03-14) ------------------- - Use lock when retrieving span.Context() (#268) - Add Configuration support for custom Injector and Extractor (#263) 2.11.2 (2018-01-12) ------------------- - Add Gopkg.toml to allow using the lib with `dep` 2.11.1 (2018-01-03) ------------------- - Do not enqueue spans after Reporter is closed (#235, #245) - Change default flush interval to 1sec (#243) 2.11.0 (2017-11-27) ------------------- - Normalize metric names and tags to be compatible with Prometheus (#222) 2.10.0 (2017-11-14) ------------------- - Support custom tracing headers (#176) - Add BaggageRestrictionManager (#178) and RemoteBaggageRestrictionManager (#182) - Do not coerce baggage keys to lower case (#196) - Log span name when span cannot be reported (#198) - Add option to enable gen128Bit for tracer (#193) and allow custom generator for high bits of trace ID (#219) 2.9.0 (2017-07-29) ------------------ - Pin thrift <= 0.10 (#179) - Introduce a parallel interface ContribObserver (#159) 2.8.0 (2017-07-05) ------------------ - Drop `jaeger.` prefix from `jaeger.hostname` process-level tag - Add options to set tracer tags 2.7.0 (2017-06-21) ------------------ - Fix rate limiter balance [#135](https://github.com/uber/jaeger-client-go/pull/135) [#140](https://github.com/uber/jaeger-client-go/pull/140) - Default client to send Jaeger.thrift [#147](https://github.com/uber/jaeger-client-go/pull/147) - Save baggage in span [#153](https://github.com/uber/jaeger-client-go/pull/153) - Move reporter.queueLength to the top of the struct to guarantee 64bit alignment [#158](https://github.com/uber/jaeger-client-go/pull/158) - Support HTTP transport with jaeger.thrift [#161](https://github.com/uber/jaeger-client-go/pull/161) 2.6.0 (2017-03-28) ------------------ - Add config option to initialize RPC Metrics feature 2.5.0 (2017-03-23) ------------------ - Split request latency metric by success/failure [#123](https://github.com/uber/jaeger-client-go/pull/123) - Add mutex to adaptive sampler and fix race condition [#124](https://github.com/uber/jaeger-client-go/pull/124) - Fix rate limiter panic [#125](https://github.com/uber/jaeger-client-go/pull/125) 2.4.0 (2017-03-21) ------------------ - Remove `_ms` suffix from request latency metric name [#121](https://github.com/uber/jaeger-client-go/pull/121) - Rename all metrics to "request" and "http_request" and use tags for other dimensions [#121](https://github.com/uber/jaeger-client-go/pull/121) 2.3.0 (2017-03-20) ------------------ - Make Span type public to allow access to non-std methods for testing [#117](https://github.com/uber/jaeger-client-go/pull/117) - Add a structured way to extract traces for logging with zap [#118](https://github.com/uber/jaeger-client-go/pull/118) 2.2.1 (2017-03-14) ------------------ - Fix panic caused by updating the remote sampler from adaptive sampler to any other sampler type (https://github.com/uber/jaeger-client-go/pull/111) 2.2.0 (2017-03-10) ------------------ - Introduce Observer and SpanObserver (https://github.com/uber/jaeger-client-go/pull/94) - Add RPC metrics emitter as Observer/SpanObserver (https://github.com/uber/jaeger-client-go/pull/103) 2.1.2 (2017-02-27) ------------------- - Fix leaky bucket bug (https://github.com/uber/jaeger-client-go/pull/99) - Fix zap logger Infof (https://github.com/uber/jaeger-client-go/pull/100) - Add tracer initialization godoc examples 2.1.1 (2017-02-21) ------------------- - Fix inefficient usage of zap.Logger 2.1.0 (2017-02-17) ------------------- - Add adapter for zap.Logger (https://github.com/uber-go/zap) - Move logging API to ./log/ package 2.0.0 (2017-02-08) ------------------- - Support Adaptive Sampling - Support 128bit Trace IDs - Change trace/span IDs from uint64 to strong types TraceID and SpanID - Add Zipkin HTTP B3 Propagation format support #72 - Rip out existing metrics and use github.com/uber/jaeger-lib/metrics - Change API for tracer, reporter, sampler initialization 1.6.0 (2016-10-14) ------------------- - Add Zipkin HTTP transport - Support external baggage via jaeger-baggage header - Unpin Thrift version, keep to master 1.5.1 (2016-09-27) ------------------- - Relax dependency on opentracing to ^1 1.5.0 (2016-09-27) ------------------- - Upgrade to opentracing-go 1.0 - Support KV logging for Spans 1.4.0 (2016-09-14) ------------------- - Support debug traces via HTTP header "jaeger-debug-id"