ocaml-opentelemetry/CHANGES.md
2023-09-22 20:22:11 +00:00

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## next version
- fix ticker thread shutdown
- migrated to OTEL proto files v1.0
- replace `Thread_local` with `ocaml-ambient-context`, allowing for implicit scope in Lwt/Eio contexts (#34)
- update `ocaml-trace` interface to use the new `trace.0.3`-style API (breaking, see #34)
## 0.5
- new implementation for ocurl backend, using ezcurl and queues
- refactor lwt: Use `try%lwt` over `Lwt.catch`
- add `opentelemetry.trace` (optional, depends on `ocaml-trace`)
## 0.4
- expose `Scope.get_surrounding`
- rehault of GC metrics
- `Trace.with_` now has `force_new_trace_id` param
- use thread-local storage to store global scope
- add `Span_link` module
- add a `Globals.default_span_kind` ref to specify default span kind
- fix(otel-lwt): missing modules now re-exported
- fix(client-ocurl): fix `tick` version used in the absence of bg thread
- drop dep on ocaml-protoc as the generated code is checked-in
- update vendored otel to 0.19
## 0.3
- improve error reporting from ocurl exporter
- improve GC sample collection
- feat(ocurl): simpler, cleaner backend implementation, with graceful exit
- config: make `Config.t` private (breaking)
## 0.2
- require pbrt only, use ocaml-protoc as a lint
- add `Metrics_callbacks` module
- add histogram metrics (untested)
- basic support for logs
- expose `tick` function (useful in the absence of a background thread)
- debug the library is set via `OTEL_OCAML_DEBUG`
- provide conventions for standard metrics
- add runtime attrs to GC stats