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69 lines
3.2 KiB
Markdown
69 lines
3.2 KiB
Markdown
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# 0. Caching dependencies
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Date: 2022-04-13
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Status: Accepted
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# Context
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`actions/setup-go` is the one of the most popular action related to Golang in GitHub Actions. Many customers use it in conjunction with [actions/cache](https://github.com/actions/cache) to speed up dependency installation process.
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See more examples on proper usage in [actions/cache documentation](https://github.com/actions/cache/blob/main/examples.md#go---modules).
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# Goals & Anti-Goals
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Integration of caching functionality into `actions/setup-go` action will bring the following benefits for action users:
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- Decrease the entry threshold for using the cache for Go dependencies and simplify initial configuration
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- Simplify YAML pipelines because there will be no need for additional steps to enable caching
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- More users will use cache for Go so more customers will have fast builds!
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We don't pursue the goal to provide wide customization of caching in scope of `actions/setup-go` action. The purpose of this integration is covering ~90% of basic use-cases. If user needs flexible customization, we should advice them to use `actions/cache` directly.
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# Decision
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- Add `cache` input parameter to `actions/setup-go`. For now, input will accept the following values:
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- `true` - enable caching for go dependencies
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- `false`- disable caching for go dependencies. This value will be set as default value
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- Cache feature will be disabled by default to make sure that we don't break existing customers. We will consider enabling cache by default in next major releases
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- Action will try to search a go.sum files in the repository and throw error in the scenario that it was not found
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- The hash of found file will be used as cache key (the same approach like [actions/cache](https://github.com/actions/cache/blob/main/examples.md#go---modules) recommends)
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- The following key cache will be used `${{ runner.os }}-go${{ go-version }}-${{ hashFiles('<go.sum-path>') }}`
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- Action will cache global cache from the `go env GOMODCACHE` and `go env GOCACHE` commands.
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- Add a `cache-dependency-path` input parameter to `actions/setup-go`. The new input will accept an array or regex of dependency files. The field will accept a path (relative to the repository root) to dependency files. If the provided path contains wildcards, the action will search all matching files and calculate a common hash like the ${{ hashFiles('**/go.sum') }} YAML construction does.
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# Example of real use-cases
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- With cache
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```yml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '18'
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cache: true
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```
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- With cache-dependency-path
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```yml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '18'
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cache: true
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cache-dependency-path: **/go.sum
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```
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```yml
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steps:
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- uses: actions/checkout@v3
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- uses: actions/setup-go@v3
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with:
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go-version: '18'
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cache: true
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cache-dependency-path: |
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**/go.sum
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**/go.mod
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```
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# Release process
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As soon as functionality is implemented, we will release minor update of action. No need to bump major version since there are no breaking changes for existing users.
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After that, we will update [starter-workflows](https://github.com/actions/starter-workflows/blob/main/ci/go.yml)
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