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feat: add cache-write input for read-only cache mode

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Add a 'cache-write' input (default: true) that controls whether the cache
is saved at the end of the workflow. When set to 'false', the action will
restore cached dependencies but skip saving, providing a read-only cache
mode.

This is useful for preventing cache poisoning attacks from untrusted PR
builds while still benefiting from cached dependencies.
This commit is contained in:
Salman Chishti 2026-03-09 05:35:59 -07:00 • committed by GitHub
parent a309ff8b42
commit 8a88e9f333
3 changed files with 14 additions and 0 deletions
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5
dist/cache-save/index.js vendored
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@ -44170,6 +44170,11 @@ const cache_distributor_1 = __nccwpck_require__(92326);
// https://github.com/actions/cache/pull/1217
async function run(earlyExit) {
try {
const cacheWriteEnabled = core.getInput('cache-write');
if (cacheWriteEnabled === 'false') {
core.info('Cache write is disabled (read-only mode). Skipping cache save.');
return;
}
const cache = core.getInput('cache');
if (cache) {
await saveCache(cache);