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Add structured error logging to OCI handlers

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Every 500 response in the OCI package silently discarded the actual
error, making production debugging impossible. Add slog.Error before
each 500 response with the error and relevant context (repo, digest,
tag, uuid). Add slog.Info for state-mutating successes (manifest push,
blob upload complete, deletions).

Logger is injected into the OCI Handler via constructor, falling back
to slog.Default() if nil.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kyle Isom
2026-03-26 12:47:44 -07:00
parent 61b8c2fcef
commit ef39152f4e
15 changed files with 86 additions and 39 deletions
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7
internal/oci/blob.go
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@@ -23,12 +23,14 @@ func (h *Handler) handleBlobGet(w http.ResponseWriter, r *http.Request, repo, di
fmt.Sprintf("repository %q not found", repo))
return
}
h.log.Error("blob get: lookup repository", "error", err, "repo", repo)
writeOCIError(w, "UNKNOWN", http.StatusInternalServerError, "internal error")
return
}
exists, err := h.db.BlobExistsInRepo(repoID, digest)
if err != nil {
h.log.Error("blob get: check blob exists in repo", "error", err, "repo", repo, "digest", digest)
writeOCIError(w, "UNKNOWN", http.StatusInternalServerError, "internal error")
return
}
@@ -40,12 +42,14 @@ func (h *Handler) handleBlobGet(w http.ResponseWriter, r *http.Request, repo, di
size, err := h.blobs.Stat(digest)
if err != nil {
h.log.Error("blob get: stat blob in storage", "error", err, "repo", repo, "digest", digest)
writeOCIError(w, "BLOB_UNKNOWN", http.StatusNotFound, "blob not found in storage")
return
}
rc, err := h.blobs.Open(digest)
if err != nil {
h.log.Error("blob get: open blob in storage", "error", err, "repo", repo, "digest", digest)
writeOCIError(w, "UNKNOWN", http.StatusInternalServerError, "internal error")
return
}
@@ -70,12 +74,14 @@ func (h *Handler) handleBlobHead(w http.ResponseWriter, r *http.Request, repo, d
fmt.Sprintf("repository %q not found", repo))
return
}
h.log.Error("blob head: lookup repository", "error", err, "repo", repo)
writeOCIError(w, "UNKNOWN", http.StatusInternalServerError, "internal error")
return
}
exists, err := h.db.BlobExistsInRepo(repoID, digest)
if err != nil {
h.log.Error("blob head: check blob exists in repo", "error", err, "repo", repo, "digest", digest)
writeOCIError(w, "UNKNOWN", http.StatusInternalServerError, "internal error")
return
}
@@ -87,6 +93,7 @@ func (h *Handler) handleBlobHead(w http.ResponseWriter, r *http.Request, repo, d
size, err := h.blobs.Stat(digest)
if err != nil {
h.log.Error("blob head: stat blob in storage", "error", err, "repo", repo, "digest", digest)
writeOCIError(w, "BLOB_UNKNOWN", http.StatusNotFound, "blob not found in storage")
return
}