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Make asset mime_type immutable after first ingest

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Prevents cross-tenant metadata mutation when multiple references share
the same content-addressed Asset row. mime_type can now only be set when
NULL (first ingest); subsequent attempts to change it are silently ignored.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Luke Mino-Altherr
2026-03-12 15:05:16 -07:00
parent 555ab32814
commit a2cb29fd06
4 changed files with 49 additions and 5 deletions
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4
app/assets/database/queries/asset.py
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@@ -69,7 +69,7 @@ def upsert_asset(
if asset.size_bytes != int(size_bytes) and int(size_bytes) > 0:
asset.size_bytes = int(size_bytes)
changed = True
if mime_type and asset.mime_type != mime_type:
if mime_type and not asset.mime_type:
asset.mime_type = mime_type
changed = True
if changed:
@@ -118,7 +118,7 @@ def update_asset_hash_and_mime(
return False
if asset_hash is not None:
asset.hash = asset_hash
if mime_type is not None:
if mime_type is not None and not asset.mime_type:
asset.mime_type = mime_type
return True