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Deprecate save-always input (#1452)

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The `save-always` input added in v4 is not
working as intended due to
`post-if` expressions not supporting the input
context.
To avoid breaking users who have already added
this input to their workflows, it is being
deprecated now and will be removed
in the next major version (v5).
See https://github.com/actions/cache/issues/1315 for more details.
This commit is contained in:
Josh Gross 2024-10-03 14:37:55 -04:00 committed by GitHub
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1
README.md
View file

@ -17,7 +17,6 @@ See ["Caching dependencies to speed up workflows"](https://docs.github.com/en/ac
### v4
* Updated to node 20
* Added a `save-always` flag to save the cache even if a prior step fails
### v3

8
action.yml
View file

@ -29,7 +29,11 @@ inputs:
save-always:
description: 'Run the post step to save the cache even if another step before fails'
default: 'false'
required: false
required: false
deprecationMessage: |
save-always does not work as intended and will be removed in a future release.
A separate `actions/cache/restore` step should be used instead.
See https://github.com/actions/cache/tree/main/save#always-save-cache for more details.
outputs:
cache-hit:
description: 'A boolean value to indicate an exact match was found for the primary key'
@ -37,7 +41,7 @@ runs:
using: 'node20'
main: 'dist/restore/index.js'
post: 'dist/save/index.js'
post-if: "success() || github.event.inputs.save-always"
post-if: "success()"
branding:
icon: 'archive'
color: 'gray-dark'

19
caching-strategies.md
View file

@ -243,24 +243,7 @@ with:
### Saving cache even if the build fails
There can be cases where a cache should be saved even if the build job fails. For example, a job can fail due to flaky tests but the caches can still be re-used. You can use `actions/cache/save` action to save the cache by using `if: always()` condition.
Similarly, `actions/cache/save` action can be conditionally used based on the output of the previous steps. This way you get more control on when to save the cache.
```yaml
steps:
- uses: actions/checkout@v4
.
. // restore if need be
.
- name: Build
run: /build.sh
- uses: actions/cache/save@v4
if: always() // or any other condition to invoke the save action
with:
path: path/to/dependencies
key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
```
See [Always save cache](./save/README.md#always-save-cache).
### Saving cache once and reusing in multiple workflows

52
save/README.md
View file

@ -70,19 +70,45 @@ with:
### 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 be saved as the workflow failed in between. For such use-cases, users now have the ability to use the `actions/cache/save` action to save the cache by using an `if: always()` condition. This way the cache will always be saved if generated, or a warning will be generated 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 previous steps. This way they get more control of when to save the 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 be saved as the workflow failed in between.
For such use-cases, users now have the ability to use the `actions/cache/save` action to save the cache by using an [`always()`](https://docs.github.com/actions/writing-workflows/choosing-what-your-workflow-does/expressions#always) condition.
This way the cache will always be saved if generated, or a warning will be generated 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 previous steps. This way they get more control of when to save the cache.
To avoid saving a cache that already exists, the `cache-hit` output from a restore step should be checked.
The `cache-primary-key` output from the restore step should also be used to ensure
the cache key does not change during the build if it's calculated based on file contents.
```yaml
steps:
- uses: actions/checkout@v4
.
. // restore if need be
.
- name: Build
run: /build.sh
- uses: actions/cache/save@v4
if: always() // or any other condition to invoke the save action
with:
path: path/to/dependencies
key: ${{ runner.os }}-${{ hashFiles('**/lockfiles') }}
name: Always Caching Primes
on: push
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v4
- name: Restore cached Primes
id: cache-primes-restore
uses: actions/cache/restore@v4
with:
key: ${{ runner.os }}-primes
path: |
path/to/dependencies
some/other/dependencies
# Intermediate workflow steps
- name: Always Save Primes
id: cache-primes-save
if: always() && steps.cache-primes-restore.outputs.cache-hit != 'true'
uses: actions/cache/save@v4
with:
key: ${{ steps.cache-primes-restore.outputs.cache-primary-key }}
path: |
path/to/dependencies
some/other/dependencies
```