update release process doc

This commit is contained in:
jregan
2019-10-03 20:27:49 -07:00
committed by Jeffrey Regan
parent c9e7dc3bfa
commit ee72746481

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@@ -4,11 +4,187 @@
[`cloud-build-local`]: https://github.com/GoogleCloudPlatform/cloud-build-local
[Google Cloud Build]: https://cloud.google.com/cloud-build
[semver]: https://semver.org
[Go modules]: https://github.com/golang/go/wiki/Modules
Scripts and configuration files for publishing a
`kustomize` release on the [release page].
This document describes how to perform a [semver] release
of one of the [Go modules] in this repository.
## Build a release locally
These modules release independently.
## Module summaries
[`sigs.k8s.io/kustomize/kustomize`]: #sigsk8siokustomizekustomize
[`sigs.k8s.io/kustomize`]: #sigsk8siokustomize
[`sigs.k8s.io/kustomize/pluginator`]: #sigsk8siokustomizepluginator
[kustomize/v3.2.1]: https://github.com/kubernetes-sigs/kustomize/releases/tag/kustomize%2Fv3.2.1
[pluginator/v1.0.0]: https://github.com/kubernetes-sigs/kustomize/releases/tag/pluginator%2Fv1.0.0
| Module Description | Module Prefix | Tag | Branch Name |
| --- | ------ | --- | --- |
| kustomize executable | [`sigs.k8s.io/kustomize/kustomize`] | _kustomize/v{major}.{minor}.{patch}_ | _release-kustomize-v{major}.{minor}_ |
| kustomize Go API | [`sigs.k8s.io/kustomize`] | _v{major}.{minor}.{patch}_ | _release-api-v{major}.{minor}_ |
| pluginator executable | [`sigs.k8s.io/kustomize/pluginator`] | _pluginator/v{major}.{minor}.{patch}_ | _release-pluginator-v{major}.{minor}_ |
### sigs.k8s.io/kustomize/kustomize
The `kustomize` program, a CLI for performing
k8s-aware structured edits to YAML in k8s resource
files.
#### Packages
There's only one package in this module. It's called `main`,
and it holds the _kustomize_ executable.
#### Release artifacts
Executable files appear for various operating
systems on the [release page]. The tag
appears in the URL, e.g. [kustomize/v3.2.1].
See the [installation instructions](../docs/INSTALL.md)
to perform an install.
### sigs.k8s.io/kustomize
This is the kustomize Go API.
#### Packages
The packages in this module are used by API clients,
like the `kustomize` program itself, and programs
in other repositories, e.g. `kubectl`.
They include methods to read, edit and emit
modified YAML.
Go consumers of this API will have a `go.mod` file
_requiring_ this module at a particular tag, e.g.
```
require sigs.k8s.io/kustomize/v4 v4.0.1
```
#### Release artifacts
Source code tar balls and zip files (no executables)
appear on the [release page].
### sigs.k8s.io/kustomize/pluginator
The `pluginator` program, a code generator that
converts Go plugins to conventional statically
linkable library code.
#### Packages
There's only one package in this module. It's called `main`,
and it holds the _pluginator_ executable.
At the time of writing this binary is only of
interest to someone writing a new builtin
transformer or generator. See the [plugin
documentation](../docs/plugins).
Its dependence on the API is primarily for
plugin-related constants, not logic, and will
only change if there's some change in how
plugins are constructed (presumably
infrequently).
#### Release artifacts
Executables appear on the [release page].
The tag appears in the URL, e.g. [pluginator/v1.0.0].
## Release procedure
At any given moment, the repository's master branch is
passing all its tests and contains code one could release.
### get up to date
```
git fetch upstream
git checkout master
git rebase upstream/master
```
### select a module to release
```
module="api" # The API
module="kustomize" # The kustomize executable
module="pluginator" # The pluginator executable
```
### determine the version
Go's [semver]-compatible version tags take the form `v{major}.{minor}.{patch}`:
| major | minor | patch |
| :---: | :---: | :---: |
| API change | enhancements | bug fixes |
| manual update | OK to auto-update | OK to auto-update |
- If there are only bug fixes or refactors, increment `patch` from whatever it is now.
- If there are new features, increment `minor`.
- If there's an API change (either the Go API or the CLI behavior
with respect to CLI arguments and flags), increment `major`.
```
major=1
minor=2
patch=3
```
### create the release branch
Every module release occurs on it's own git branch.
The branch name doesn't include the patch number,
since the branch accumulates patch releases.
> TODO: define procedure for doing a cherrypick (committing a patch) to a
> release branch that already exists.
```
branch="release-${module}-v${major}.${minor}
git checkout -b $branch
```
### remove API replacements from go.mod
Only do this if releasing one of the executables.
In this repository, an executable in development
on the master branch typically depends on the API
also in development on the master branch. This is
achieved via a `replace` directive in the
executable's `go.mod` file.
A _released_ executable, however, must depend on a
specific release of the API. For this reason,
it's typical, but not required, to release an
executable immediately after releasing the API,
updating the API version that the executable
requires.
```
# Update the following as needed, obviously.
if [ "$module" != "api" ]; then
go mod edit -dropreplace=sigs.k8s.io/kustomize/v3 $module/go.mod
go mod edit -require=sigs.k8s.io/kustomize/v4@v4.0.1 $module/go.mod
git commit -a -m "Drop API module replacement"
fi
```
### optionally build a release locally
Install [`cloud-build-local`], then run
@@ -16,32 +192,29 @@ Install [`cloud-build-local`], then run
./releasing/localbuild.sh
```
## Do a real (cloud) release
This should create release artifacts in a local directory.
### push the release branch
Get on an up-to-date master branch:
```
git fetch upstream
git checkout master
git rebase upstream/master
git push -f upstream $branch
```
### review tags
### optionally review tags
```
git tag -l
git ls-remote --tags upstream
```
### define the new tag
Define the version per [semver] principles; it must start with `v`:
### define the release tag
```
# To push a kustomize binary
version=kustomize/v3.2.1
# To push a pluginator binary - triggers a different script
version=pluginator/v1.0.1
tag="v${major}.v${minor}.${patch}
if [ "$module" != "api" ]; then
# must prefix the tag with submodule name
tag="${module}/${tag}"
fi
```
### if replacing a release...
@@ -51,7 +224,7 @@ Must delete the tag before re-pushing it.
Delete the tag locally:
```
git tag --delete $version
git tag --delete $tag
```
Delete it upstream:
@@ -60,7 +233,7 @@ Delete it upstream:
git remote set-url --push upstream git@github.com:kubernetes-sigs/kustomize.git
# The empty space before the colon effectively means delete the tag.
git push upstream :refs/tags/$version
git push upstream :refs/tags/$tag
# Enable push protection:
git remote set-url --push upstream no_push
@@ -70,23 +243,25 @@ Optionally visit the [release page] and delete
(what has now become) the _draft_ release for that
version.
### tag locally
### tag the local repository
```
git tag -a $version -m "Release $version"
git tag -a $tag -m "Release $tag on branch $branch"
```
### trigger the cloud build
### trigger the cloud build by pushing the tag
Push the tag:
```
git remote set-url --push upstream git@github.com:kubernetes-sigs/kustomize.git
git push upstream $version
git push upstream $tag
git remote set-url --push upstream no_push
```
This triggers a job in [Google Cloud Build] to
put a new release on the [release page].
### Update release notes
### update release notes
Visit the [release page] and edit the release notes as desired.