fix: don't report upstream-only blobs as locally available in HEAD#32
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davidpoblador merged 1 commit intomainfrom Apr 7, 2026
Merged
fix: don't report upstream-only blobs as locally available in HEAD#32davidpoblador merged 1 commit intomainfrom
davidpoblador merged 1 commit intomainfrom
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Push clients (docker buildx) check HEAD before uploading blobs. When switchyard reported 200 for blobs that only existed upstream, clients skipped the upload, causing sync to fail with missing blobs forever. GET already proxies and caches from upstream for pull clients, so the HEAD fallback was unnecessary. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
head_blobwas falling back to upstream, returning 200 for blobs not stored locally. This caused clients to skip the upload, and sync would fail forever with missing blobs.head_blob. Pull clients are unaffected sinceget_blobalready proxies and caches from upstream.Test plan
test_head_blob_returns_404_when_only_upstream_has_itpassesPUSH_REGISTRY=localhost:5050 just releasefrom bulletin to verify sync completes🤖 Generated with Claude Code