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72 lines
2.5 KiB
Markdown
72 lines
2.5 KiB
Markdown
# Check action
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The check action checks if a cache entry exists without actually downloading it.
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## Inputs
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* `path` - A list of files, directories, and wildcard patterns to cache and restore. See [`@actions/glob`](https://github.com/actions/toolkit/tree/main/packages/glob) for supported patterns.
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* `key` - String used while saving cache for restoring the cache
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* `restore-keys` - An ordered list of prefix-matched keys to use for restoring stale cache if no cache hit occurred for key.
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* `fail-on-cache-miss` - Fail the workflow if cache entry is not found. Default: `false`
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## Outputs
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* `cache-hit` - A boolean value to indicate an exact match was found for the key.
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* `cache-primary-key` - Cache primary key passed in the input to use in subsequent steps of the workflow.
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* `cache-matched-key` - Key of the cache that was restored, it could either be the primary key on cache-hit or a partial/complete match of one of the restore keys.
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> **Note**
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`cache-hit` will be set to `true` only when cache hit occurs for the exact `key` match. For a partial key match via `restore-keys` or a cache miss, it will be set to `false`.
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## Use cases
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As this is a newly introduced action to give users more control in their workflows, below are some use cases where one can use this action.
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### Skip downloading cache if entry exists
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Sometimes it's useful to separate build and test jobs. In that case it's not necessary
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to restore the cache in the first job if an entry already exists.
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#### Step 1 - Build artifact only if cache doesn't exist
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```yaml
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build:
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steps:
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- uses: actions/checkout@v3
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- users: actions/cache/check@v3
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id: cache-check
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with:
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path: path/to/dependencies
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key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
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- name: Build
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if: steps.cache-check.outputs.cache-hit != 'true'
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run: /build.sh
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- uses: actions/cache/save@v3
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if: steps.cache-check.outputs.cache-hit != 'true'
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with:
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path: path/to/dependencies
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key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
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```
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#### Step 2 - Restore the built artifact from cache using the same key and path
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```yaml
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test:
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needs: build
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matrix:
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key: [1, 2, 3]
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steps:
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- uses: actions/checkout@v3
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- uses: actions/cache/restore@v3
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with:
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path: path/to/dependencies
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fail-on-cache-miss: true
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key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
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- name: Test
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run: /test.sh -key ${{ matrix.key }}
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```
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