133 lines
5.4 KiB
Markdown
133 lines
5.4 KiB
Markdown
# Release Process
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## Semantic Convention Generation
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If a new version of the OpenTelemetry Specification has been released it will be necessary to generate a new
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semantic convention package from the YAML definitions in the specification repository. There is a `semconvgen` utility
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installed by `make tools` that can be used to generate the a package with the name matching the specification
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version number under the `semconv` package. This will ideally be done soon after the specification release is
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tagged. Make sure that the specification repo contains a checkout of the the latest tagged release so that the
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generated files match the released semantic conventions.
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There are currently two categories of semantic conventions that must be generated, `resource` and `trace`.
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```
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.tools/semconvgen -i /path/to/specification/repo/semantic_conventions/resource -t semconv/template.j2
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.tools/semconvgen -i /path/to/specification/repo/semantic_conventions/trace -t semconv/template.j2
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```
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Using default values for all options other than `input` will result in using the `template.j2` template to
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generate `resource.go` and `trace.go` in `/path/to/otelgo/repo/semconv/<version>`.
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There are several ancillary files that are not generated and should be copied into the new package from the
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prior package, with updates made as appropriate to canonical import path statements and constant values.
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These files include:
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* doc.go
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* exception.go
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* http(_test)?.go
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* schema.go
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Uses of the previous schema version in this repository should be updated to use the newly generated version.
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No tooling for this exists at present, so use find/replace in your editor of choice or craft a `grep | sed`
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pipeline if you like living on the edge.
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## Pre-Release
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First, decide which module sets will be released and update their versions
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in `versions.yaml`. Commit this change to a new branch.
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Update go.mod for submodules to depend on the new release which will happen in the next step.
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1. Run the `prerelease` make target. It creates a branch
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`prerelease_<module set>_<new tag>` that will contain all release changes.
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```
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make prerelease MODSET=<module set>
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```
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2. Verify the changes.
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```
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git diff ...prerelease_<module set>_<new tag>
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```
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This should have changed the version for all modules to be `<new tag>`.
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If these changes look correct, merge them into your pre-release branch:
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```go
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git merge prerelease_<module set>_<new tag>
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```
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3. Update the [Changelog](./CHANGELOG.md).
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- Make sure all relevant changes for this release are included and are in language that non-contributors to the project can understand.
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To verify this, you can look directly at the commits since the `<last tag>`.
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```
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git --no-pager log --pretty=oneline "<last tag>..HEAD"
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```
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- Move all the `Unreleased` changes into a new section following the title scheme (`[<new tag>] - <date of release>`).
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- Update all the appropriate links at the bottom.
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4. Push the changes to upstream and create a Pull Request on GitHub.
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Be sure to include the curated changes from the [Changelog](./CHANGELOG.md) in the description.
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## Tag
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Once the Pull Request with all the version changes has been approved and merged it is time to tag the merged commit.
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***IMPORTANT***: It is critical you use the same tag that you used in the Pre-Release step!
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Failure to do so will leave things in a broken state. As long as you do not
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change `versions.yaml` between pre-release and this step, things should be fine.
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***IMPORTANT***: [There is currently no way to remove an incorrectly tagged version of a Go module](https://github.com/golang/go/issues/34189).
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It is critical you make sure the version you push upstream is correct.
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[Failure to do so will lead to minor emergencies and tough to work around](https://github.com/open-telemetry/opentelemetry-go/issues/331).
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1. For each module set that will be released, run the `add-tags` make target
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using the `<commit-hash>` of the commit on the main branch for the merged Pull Request.
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```
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make add-tags MODSET=<module set> COMMIT=<commit hash>
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```
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It should only be necessary to provide an explicit `COMMIT` value if the
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current `HEAD` of your working directory is not the correct commit.
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2. Push tags to the upstream remote (not your fork: `github.com/open-telemetry/opentelemetry-go.git`).
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Make sure you push all sub-modules as well.
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```
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git push upstream <new tag>
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git push upstream <submodules-path/new tag>
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...
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```
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## Release
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Finally create a Release for the new `<new tag>` on GitHub.
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The release body should include all the release notes from the Changelog for this release.
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## Verify Examples
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After releasing verify that examples build outside of the repository.
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```
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./verify_examples.sh
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```
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The script copies examples into a different directory removes any `replace` declarations in `go.mod` and builds them.
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This ensures they build with the published release, not the local copy.
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## Post-Release
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### Contrib Repository
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Once verified be sure to [make a release for the `contrib` repository](https://github.com/open-telemetry/opentelemetry-go-contrib/blob/main/RELEASING.md) that uses this release.
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### Website Documentation
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Update [the documentation](./website_docs) for [the OpenTelemetry website](https://opentelemetry.io/docs/go/).
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Importantly, bump any package versions referenced to be the latest one you just released and ensure all code examples still compile and are accurate.
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