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feat: backport cache read-denied + ACTIONS_CACHE_MODE handling (5.2.0)

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Backport of the read-denied and ACTIONS_CACHE_MODE cache-mode gating from
the ESM v6.2.0 line (#2447) to the CommonJS v5 line, released as 5.2.0.
Mirrors the earlier write-denied backport (#2435, 5.1.0).

- Detect the `cache read denied:` prefix on download failures (v2 twirp
  path and v1 `_apis/artifactcache` path) and surface it as a core.warning
  without failing the run.
- Honor ACTIONS_CACHE_MODE: skip restore when the effective cache-mode does
  not permit reads (none, write-only) and skip save when it does not permit
  writes (none, read), logging a single non-fatal core.info line. Unset or
  unrecognized modes are unchanged.
- Add read-denied and cache-mode tests; bump to 5.2.0 with RELEASES entry.

Co-authored-by: Copilot App <[email protected]>
Copilot-Session: e96deec1-716e-4e14-acdf-a230139420a2
This commit is contained in:
Philip Gai
2026-07-13 15:19:29 -05:00
co-authored by Copilot App
parent c6ca5e729f
commit 3b3db3879e
12 changed files with 401 additions and 12 deletions
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packages/cache/RELEASES.md
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@@ -1,5 +1,10 @@
# @actions/cache Releases
### 5.2.0
- Handle cache read error due to read-only token: detect the `cache read denied:` prefix on cache download failures (both the v2 twirp path and the v1 `_apis/artifactcache` path) and surface it as a `core.warning` (without failing the run).
- Honor the `ACTIONS_CACHE_MODE` environment variable: skip restore when the effective cache-mode does not permit reads (`none`, `write-only`) and skip save when it does not permit writes (`none`, `read`), logging a single non-fatal `core.info` line. When `ACTIONS_CACHE_MODE` is unset or unrecognized, behavior is unchanged.
### 5.1.0
- Handle cache write error due to read-only token: detect the `cache write denied:` prefix on cache reservation failures and surface it as a `core.warning` (without failing the run).