OCB init by dmathieu · Pull Request #14530 · open-telemetry/opentelemetry-collector

dmathieu · 2026-02-04T14:28:39Z

This introduces a new ocb init command which is meant to setup a new custom collector repository.

The intent for this new subcommand at the moment is to be rather simple.
We discussed the potential of making it more powerful with things such as --from-config that would initialize the manifest from an existing collector config.
In order to keep things reviewable, we'll do this in iterations.

codecov · 2026-02-04T14:38:49Z

Codecov Report

❌ Patch coverage is 63.29114% with 29 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.76%. Comparing base (5e3bf40) to head (158e808).
⚠️ Report is 14 commits behind head on main.

Files with missing lines	Patch %	Lines
cmd/builder/internal/command_init.go	59.15%	15 Missing and 14 partials ⚠️

❌ Your patch status has failed because the patch coverage (63.29%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #14530      +/-   ##
==========================================
- Coverage   91.83%   91.76%   -0.07%     
==========================================
  Files         677      678       +1     
  Lines       42719    42817      +98     
==========================================
+ Hits        39230    39292      +62     
- Misses       2432     2452      +20     
- Partials     1057     1073      +16

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ArthurSens

That's a decent start :)

As inspiration, Kubebuilder's Makefile provides a good example of a good developer experience.

Co-authored-by: Arthur Silva Sens <arthursens2005@gmail.com>

codspeed-hq · 2026-02-05T09:38:50Z

CodSpeed Performance Report

Merging this PR will improve performance by 38.72%

_{Comparing dmathieu:ocb-init (158e808) with main (81bc641)}

⚠️

Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

Summary

⚡ 3 improved benchmarks
✅ 58 untouched benchmarks
⏩ 20 skipped benchmarks¹

Performance Changes

	Benchmark	`BASE`	`HEAD`	Efficiency
⚡	`BenchmarkMetricsMarshalJSON`	5.5 µs	3.9 µs	+38.72%
⚡	`BenchmarkLogsMarshalJSON`	3.8 µs	3 µs	+28.48%
⚡	`BenchmarkTracesMarshalJSON`	6 µs	4.6 µs	+28.89%

20 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

ArthurSens

Not sure where you wanna go before calling this PR complete. I'm super happy to see this getting merged and we iterate together over time :)

ArthurSens · 2026-02-05T17:24:26Z

Some future work I'd love to see here is adding commands like

ocb create receiver <name> --signals=metrics,traces,logs,profiles
ocb create processor <name> --signals=metrics,traces,logs,profiles
ocb create extension <name> --signals=metrics,traces,logs,profiles
ocb create exporter <name> --signals=metrics,traces,logs,profiles

that would generate the scaffolding for a new component with all the necessary initial files and go structure, like factories, empty config struct, metadata.yaml, etc etc :)

CI, renovate config and all the goodness we use to maintain our own repositories would be good additions too

dmathieu · 2026-02-05T17:27:55Z

The only thing I still want to add is a README.md.

Co-authored-by: Arthur Silva Sens <arthursens2005@gmail.com>

dmathieu · 2026-02-06T09:04:44Z

cc @mx-psi @jpkrohling this is the ocb init command we discussed on monday.

ArthurSens

By the way, happy to be code owner and help evolve and maintain ocb :)

In case the current code owners would be ok with it of course

dmathieu · 2026-02-06T10:21:00Z

I'd be happy to be added as codeowner as well.

Co-authored-by: Pablo Baeyens <pbaeyens31+github@gmail.com>

mx-psi · 2026-02-06T12:18:47Z

Can you file a separate PR to be added as codeowners @ArthurSens @dmathieu ?

mx-psi · 2026-02-06T12:19:31Z

Will merge this on Monday unless there are further comments

florianl

I love this approach making it easier to adapt OCB 🚀

@ArthurSens

This follows #14530 cc @ArthurSens

@ArthurSens

This follows open-telemetry/opentelemetry-collector#14530 cc @ArthurSens

…ocessortest to v0.147.0 (#38) This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [go.opentelemetry.io/collector/processor/processortest](https://github.com/open-telemetry/opentelemetry-collector) | `v0.144.0` → `v0.147.0` | ![age](https://developer.mend.io/api/mc/badges/age/go/go.opentelemetry.io%2fcollector%2fprocessor%2fprocessortest/v0.147.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/go.opentelemetry.io%2fcollector%2fprocessor%2fprocessortest/v0.144.0/v0.147.0?slim=true) | --- ### Release Notes <details> <summary>open-telemetry/opentelemetry-collector (go.opentelemetry.io/collector/processor/processortest)</summary> ### [`v0.147.0`](https://github.com/open-telemetry/opentelemetry-collector/blob/HEAD/CHANGELOG.md#v1530v01470) [Compare Source](open-telemetry/opentelemetry-collector@v0.146.1...v0.147.0) ##### 💡 Enhancements 💡 - `exporter/debug`: Output bucket counts for exponential histogram data points in normal verbosity. ([#10463](open-telemetry/opentelemetry-collector#10463)) - `pkg/exporterhelper`: Add `metadata_keys` configuration to `sending_queue.batch.partition` to partition batches by client metadata ([#14139](open-telemetry/opentelemetry-collector#14139)) The `metadata_keys` configuration option is now available in the `sending_queue.batch.partition` section for all exporters. When specified, batches are partitioned based on the values of the listed metadata keys, allowing separate batching per metadata partition. This feature is automatically configured when using `exporterhelper.WithQueue()`. ##### 🧰 Bug fixes 🧰 - `cmd/builder`: Fix duplicate error output when CLI command execution fails in the builder tool. ([#14436](open-telemetry/opentelemetry-collector#14436)) - `cmd/mdatagen`: Fix duplicate error output when CLI command execution fails in the mdatagen tool. ([#14436](open-telemetry/opentelemetry-collector#14436)) - `cmd/mdatagen`: Fix semconv URL validation for metrics with underscores in their names ([#14583](open-telemetry/opentelemetry-collector#14583)) Metrics like `system.disk.io_time` now correctly validate against semantic convention URLs containing underscores in the anchor tag. - `extension/memory_limiter`: Use ChainUnaryInterceptor instead of UnaryInterceptor to allow multiple interceptors. ([#14634](open-telemetry/opentelemetry-collector#14634)) If multiple extensions that use the UnaryInterceptor are set the binary panics at start time. - `extension/memory_limiter`: Add support for streaming services. ([#14634](open-telemetry/opentelemetry-collector#14634)) - `pkg/config/configmiddleware`: Add context.Context to HTTP middleware interface constructors. ([#14523](open-telemetry/opentelemetry-collector#14523)) This is a breaking API change for components that implement or use extensionmiddleware. - `pkg/confmap`: Fix another issue where configs could fail to decode when using interpolated values in string fields. ([#14034](open-telemetry/opentelemetry-collector#14034)) For example, a resource attribute can be set via an environment variable to a string that is parseable as a number, e.g. `1234`. (A similar bug was fixed in a previous release: that one was triggered when the field was nested in a struct, whereas this one is triggered when the field internally has type "pointer to string" rather than "string".) - `pkg/otelcol`: The featuregate subcommand now rejects extra positional arguments instead of silently ignoring them. ([#14554](open-telemetry/opentelemetry-collector#14554)) - `pkg/queuebatch`: Fix data race in partition\_batcher where resetTimer() was called outside mutex, causing concurrent timer.Reset() calls and unpredictable batch flush timing under load. ([#14491](open-telemetry/opentelemetry-collector#14491)) - `pkg/scraperhelper`: Log scrapers now emit log-appropriate receiver telemetry ([#14654](open-telemetry/opentelemetry-collector#14654)) Log scrapers previously emitted the same receiver telemetry as metric scrapers, such as the otelcol\_receiver\_accepted\_metric\_points metric (instead of otelcol\_receiver\_accepted\_log\_records), or spans named receiver/myreceiver/MetricsReceived (instead of receiver/myreceiver/LogsReceived). This did not affect scraper-specific spans and metrics. - `processor/batch`: Fixes a bug where the batch processor would not copy `SchemaUrl` metadata from resource and scope containers during partial batch splits. ([#12279](open-telemetry/opentelemetry-collector#12279), [#14620](open-telemetry/opentelemetry-collector#14620))  ### [`v0.146.1`](https://github.com/open-telemetry/opentelemetry-collector/blob/HEAD/CHANGELOG.md#v1520v01461) [Compare Source](open-telemetry/opentelemetry-collector@v0.146.0...v0.146.1)  ### [`v0.146.0`](https://github.com/open-telemetry/opentelemetry-collector/blob/HEAD/CHANGELOG.md#v01460) [Compare Source](open-telemetry/opentelemetry-collector@v0.145.0...v0.146.0) ##### 🛑 Breaking changes 🛑 - `all`: Increase minimum Go version to 1.25 ([#14567](open-telemetry/opentelemetry-collector#14567)) ##### 🚩 Deprecations 🚩 - `pdata/pprofile`: Declare removed aggregation elements as deprecated. ([#14528](open-telemetry/opentelemetry-collector#14528)) ##### 💡 Enhancements 💡 - `all`: Add detailed failure attributes to exporter send\_failed metrics at detailed telemetry level. ([#13956](open-telemetry/opentelemetry-collector#13956)) The `otelcol_exporter_send_failed_{spans,metric_points,log_records}` metrics now include failure attributes when telemetry level is Detailed: `error.type` (OpenTelemetry semantic convention describing the error class) and `error.permanent` (indicates if error is permanent/non-retryable). The `error.type` attribute captures gRPC status codes (e.g., "Unavailable", "ResourceExhausted"), standard Go context errors (e.g., "canceled", "deadline\_exceeded"), and collector-specific errors (e.g., "shutdown"). This enables better alerting and debugging by providing standardized error classification. - `cmd/builder`: Introduce new experimental `init` subcommand ([#14530](open-telemetry/opentelemetry-collector#14530)) The new `init` subcommand initializes a new custom collector - `cmd/builder`: Add "telemetry" field to allow configuring telemetry providers ([#14575](open-telemetry/opentelemetry-collector#14575)) Most users should not need to use this, this field should only be set if you intend to provide your own OpenTelemetry SDK. - `cmd/mdatagen`: Introduce additional metadata (the version since the deprecation started, and the deprecation reason) for deprecated metrics. ([#14113](open-telemetry/opentelemetry-collector#14113)) - `cmd/mdatagen`: Add optional `relationships` field to entity schema in metadata.yaml ([#14284](open-telemetry/opentelemetry-collector#14284)) - `exporter/debug`: Add `output_paths` configuration option to control output destination when `use_internal_logger` is false. ([#10472](open-telemetry/opentelemetry-collector#10472)) When `use_internal_logger` is set to `false`, the debug exporter now supports configuring the output destination via the `output_paths` option. This allows users to send debug exporter output to `stdout`, `stderr`, or a file path. The default value is `["stdout"]` to maintain backward compatibility. - `pkg/confmap`: Add experimental `ToStringMapRaw` function to decode `confmap.Conf` into a string map without losing internal types ([#14480](open-telemetry/opentelemetry-collector#14480)) This method exposes the internal structure of a `confmap.Conf` which may change at any time without prior notice ##### 🧰 Bug fixes 🧰 - `cmd/mdatagen`: Reset aggDataPoints during metric init to avoid index out of range panic across emit cycles when reaggregation is enabled. ([#14569](open-telemetry/opentelemetry-collector#14569)) - `cmd/mdatagen`: Fix panic when mdatagen is run without arguments. ([#14506](open-telemetry/opentelemetry-collector#14506)) - `pdata/pprofile`: Fix off-by-one issue in dictionary lookups. ([#14534](open-telemetry/opentelemetry-collector#14534)) - `pkg/config/confighttp`: Fix high cardinality span name from request method from confighttp server internal telemetry ([#14516](open-telemetry/opentelemetry-collector#14516)) Follow spec to bound request method cardinality. - `pkg/otelcol`: Ignore component aliases in the `otelcol components` command ([#14492](open-telemetry/opentelemetry-collector#14492)) - `pkg/otelcol`: Order providers and converters in alphabetical order in the `components` subcommand. ([#14476](open-telemetry/opentelemetry-collector#14476))  ### [`v0.145.0`](https://github.com/open-telemetry/opentelemetry-collector/blob/HEAD/CHANGELOG.md#v1510v01450) [Compare Source](open-telemetry/opentelemetry-collector@v0.144.0...v0.145.0) ##### 💡 Enhancements 💡 - `pkg/scraperhelper`: ScraperID has been added to the logs for metrics, logs, and profiles ([#14461](open-telemetry/opentelemetry-collector#14461)) ##### 🧰 Bug fixes 🧰 - `exporter/otlp_grpc`: Fix the OTLP exporter balancer to use round\_robin by default, as intended. ([#14090](open-telemetry/opentelemetry-collector#14090)) - `pkg/config/configoptional`: Fix `Unmarshal` methods not being called when config is wrapped inside `Optional` ([#14500](open-telemetry/opentelemetry-collector#14500)) This bug notably manifested in the fact that the `sending_queue::batch::sizer` config for exporters stopped defaulting to `sending_queue::sizer`, which sometimes caused the wrong units to be used when configuring `sending_queue::batch::min_size` and `max_size`. As part of the fix, `xconfmap` exposes a new `xconfmap.WithForceUnmarshaler` option, to be used in the `Unmarshal` methods of wrapper types like `configoptional.Optional` to make sure the `Unmarshal` method of the inner type is called. The default behavior remains that calling `conf.Unmarshal` on the `confmap.Conf` passed as argument to an `Unmarshal` method will skip any top-level `Unmarshal` methods to avoid infinite recursion in standard use cases. - `pkg/confmap`: Fix an issue where configs could fail to decode when using interpolated values in string fields. ([#14413](open-telemetry/opentelemetry-collector#14413)) For example, a header can be set via an environment variable to a string that is parseable as a number, e.g. `1234` - `pkg/service`: Don't error on startup when process metrics are enabled on unsupported OSes (e.g. AIX) ([#14307](open-telemetry/opentelemetry-collector#14307))  </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).  Reviewed-on: https://gitea.t000-n.de/t.behrendt/tracebasedlogsampler/pulls/38 Reviewed-by: t.behrendt <t.behrendt@noreply.localhost> Co-authored-by: Renovate Bot <renovate@t00n.de> Co-committed-by: Renovate Bot <renovate@t00n.de>

add new ocb init command

3f229af

use path.Join to handle windows

d290e2b

dmathieu force-pushed the ocb-init branch from 8b72e43 to d290e2b Compare February 4, 2026 15:08

fix relative path on windows

06f91bb

ArthurSens reviewed Feb 4, 2026

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Comment thread cmd/builder/internal/command_init.go Outdated

dmathieu and others added 4 commits February 5, 2026 09:59

Update cmd/builder/internal/command_init.go

ec3f7fd

Co-authored-by: Arthur Silva Sens <arthursens2005@gmail.com>

initialize go mod

0c1edf5

ignore tmp folder from git

521d409

add makefile and default collector configuration

b9833fa

dmathieu added 6 commits February 5, 2026 10:55

ensure the generated collector can run

78359d3

wait for a minute

4504e4a

add changelog entry

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go up to 2 minutes

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add pr number

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go up to 5 minutes

f25e802

dmathieu force-pushed the ocb-init branch from 08d7e1d to c7a3b2b Compare February 5, 2026 10:50

move the e2e test to test.sh

21e550a

dmathieu force-pushed the ocb-init branch from c7a3b2b to 21e550a Compare February 5, 2026 10:52

dmathieu added 3 commits February 5, 2026 11:54

wait for 5 minutes for init

fe15d21

use compiled versions from the builder config

90be5f5

fix imports order

189489d

ArthurSens approved these changes Feb 5, 2026

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Comment thread cmd/builder/internal/command_init.go

dmathieu and others added 4 commits February 6, 2026 09:35

Update cmd/builder/internal/command_init.go

d4411e7

Co-authored-by: Arthur Silva Sens <arthursens2005@gmail.com>

add readme

40ac96f

use flag to pass path in integration test

e840f1f

properly name init test

6f9a58a

dmathieu marked this pull request as ready for review February 6, 2026 09:04

dmathieu requested a review from a team as a code owner February 6, 2026 09:04

dmathieu requested a review from evan-bradley February 6, 2026 09:04

ArthurSens approved these changes Feb 6, 2026

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mx-psi reviewed Feb 6, 2026

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dmathieu and others added 7 commits February 6, 2026 11:36

Update cmd/builder/internal/init/templates/README.md.tmpl

2dfe3f4

Co-authored-by: Pablo Baeyens <pbaeyens31+github@gmail.com>

Update cmd/builder/internal/init/templates/README.md.tmpl

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Co-authored-by: Pablo Baeyens <pbaeyens31+github@gmail.com>

Update cmd/builder/internal/init/templates/README.md.tmpl

43c7ef6

Co-authored-by: Pablo Baeyens <pbaeyens31+github@gmail.com>

Update cmd/builder/internal/init/templates/README.md.tmpl

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Co-authored-by: Pablo Baeyens <pbaeyens31+github@gmail.com>

Update cmd/builder/internal/init/templates/README.md.tmpl

ec27481

Co-authored-by: Pablo Baeyens <pbaeyens31+github@gmail.com>

add link to writing new components

8e17c3d

singular receiver and exporter

158e808

mx-psi approved these changes Feb 6, 2026

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dmathieu mentioned this pull request Feb 6, 2026

Add Arthur and Damien as ocb code owners #14539

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florianl approved these changes Feb 6, 2026

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github-merge-queue Bot pushed a commit that referenced this pull request Feb 6, 2026

Add Arthur and Damien as ocb code owners (#14539)

a992ec4

This follows #14530 cc @ArthurSens

mx-psi added this pull request to the merge queue Feb 9, 2026

Merged via the queue into open-telemetry:main with commit f5333c7 Feb 9, 2026
62 of 63 checks passed

dmathieu mentioned this pull request Feb 12, 2026

Setup ocb subcommands to create components #14576

Closed

evan-bradley mentioned this pull request Feb 17, 2026

[chore] Prepare release v0.146.0 #14608

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zeekay pushed a commit to hanzoai/telemetry that referenced this pull request Feb 22, 2026

Add Arthur and Damien as ocb code owners (#14539)

247f7e7

This follows open-telemetry/opentelemetry-collector#14530 cc @ArthurSens

ArthurSens mentioned this pull request Mar 4, 2026

[cmd/builder] Git repository bootstrapping #14702

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