cache/save/README.md

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GA for granular cache (#1035) * Add example for Haskell Stack * Revert "Add example for Haskell Stack" * Basic implementation * Updated variable name * Adding wrapper class * Changed logs to warnings * added debug logs * experimenting * Test * test * new try * test * Impl separated * Reverted wrapper changes * Added test cases * Some cleanup * Formatted document * Fixed test cases issues * Slight modification for test cases check * Updated new actions' input descriptions * Reverted custom asks implemented and added wrapper * refactor into a generic outputter * Readme draft for new actions * Generated dist * Fixed breaking test case * Removed return type in promise * Removed commented lines * Calling methods from same file * dist * update save as well * fix merge * Changes for beta release * Update dist folder * Fixed formatting * dist * Add support for gzip fallback for restore of old cache on windows * Fixed test cases * Fixed test cases * Added restore only and save only test cases * Updated new actions dist files * Removed comments * Fixed inputs * Renamed variables and added tests * Fixed breaking test case * Fixed review comments and tests * added stateprovider changes * Deleted stateprovider tests until added * Added stateprovider test cases * Fixed breaking test case * Updated outputs of restore action * Changes for beta release * Update dist folder * Add support for gzip fallback for restore of old cache on windows * update for new beta release * Update save/action.yml Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update restore/action.yml Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update restore/action.yml Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update restore/action.yml Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update restore/action.yml Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Added more assertions as values can't be checked * Removed unused code * Merged beta branch and resolved conflicts * Added save readme * Updates to save readme * Renamed output * Added cache hit info in readme * Update restore/README.md Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update restore/README.md Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update restore/README.md Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update save/README.md Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Update save/README.md Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> * Removed verbose statements * Repositioned new actions introduction * Added test case for restore state * Addressed review comments * nit * nit: added language to code blocks * Updated beta version to 3.2.0-beta.1 * Added stateprovider mock implementations * Linting errors fixed * Save-only warning added * Updated return ID to -2 * Removed -2 error code * Removed comment * Updated cache npm lib version * Updated license version * Updated releases.md * Updated readme with the new actions in what's new Co-authored-by: Malo Bourgon <mbourgon@gmail.com> Co-authored-by: Vipul <vsvipul@github.com> Co-authored-by: Bishal Prasad <bishal-pdmsft@github.com> Co-authored-by: Tanuj Kumar Mishra <tanuj077@users.noreply.github.com> Co-authored-by: Sampark Sharma <phantsure@github.com>
2022-12-21 15:08:44 +01:00
# Save action
The save action, as the name suggest, saves a cache. It acts similar to the `cache` action except that it doesn't necessarily first do a restore. This action can provide you a granular control to only save a cache without having to necessarily restore it, or to do a restore anywhere in the workflow job and not only in post phase.
## Inputs
* `key` - 'An explicit key for saving the cache'
* `path` - 'A list of files, directories, and wildcard patterns to cache'
* `upload-chunk-size` - 'The chunk size used to split up large files during upload, in bytes'
## Outputs
This action has no outputs.
## Use cases
### Only save cache
In case you are using separate jobs for generating common artifacts and sharing them across different jobs, this action will help you with your save only needs.
```yaml
steps:
- uses: actions/checkout@v3
- name: Install Dependencies
if: steps.cache.outputs.cache-hit != 'true'
run: /install.sh
- name: Build common artifacts
run: /build.sh
- uses: actions/cache/save@v3
id: cache
with:
path: path/to/dependencies
key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
```
### Re-evaluate cache key while saving
With save action, the key can now be re-evaluated while executing the action. This helps in cases where the lockfiles are generated during the build.
Let's say we have a restore step that computes key at runtime
```yaml
uses: actions/cache/restore@v3
id: restore-cache
with:
key: cache-${{ hashFiles('**/lockfiles') }}
```
Case 1: Where an user would want to reuse the key as it is
```yaml
uses: actions/cache/save@v3
with:
key: steps.restore-cache.output.key
```
Case 2: Where the user would want to re-evaluate the key
```yaml
uses: actions/cache/save@v3
with:
key: npm-cache-${{hashfiles(package-lock.json)}}
```
### Always save cache
There are instances where some flaky test cases would fail the entire workflow and users would get frustrated because the builds would run for hours and the cache couldn't get saved as the workflow failed in between. For such use-cases, users would now have the ability to use `actions/cache/save` action to save the cache by using `if: always()` condition. This way the cache will always be saved if generated, or a warning will be thrown that nothing is found on the cache path. Users can also use the `if` condition to only execute the `actions/cache/save` action depending on the output of the previous steps. This way they get more control on when to save the cache.
```yaml
steps:
- uses: actions/checkout@v3
.
. // restore if need be
.
- name: Build
run: /build.sh
- uses: actions/cache/save@v3
if: always() // or any other condition to invoke the save action
with:
path: path/to/dependencies
key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
```