gabriel / musehub public
0053_snapshot_manifest_blob_nullable.py python
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sha256:1ccb8409daa5aabe577bd26d11b56ed12f3376d64011d0e75a247e81211a66ee docs(mwp4/phase5): tick Phase 5 checkboxes, close musehub#109 Sonnet 4.6 21 days ago
1 """Make musehub_snapshots.manifest_blob nullable.
2
3 snapshot_id = sha256(sorted manifest entries) — the ID is the proof.
4 Snapshots pushed via the delta-mpack path store manifest_blob=NULL;
5 the manifest can be reconstructed from the delta chain in MinIO.
6
7 Revision ID: 0053
8 Revises: 0052
9 """
10 from __future__ import annotations
11
12 import sqlalchemy as sa
13 from alembic import op
14
15
16 revision: str = "0053"
17 down_revision: str = "0052"
18 branch_labels = None
19 depends_on = None
20
21
22 def upgrade() -> None:
23 op.alter_column(
24 "musehub_snapshots",
25 "manifest_blob",
26 existing_type=sa.LargeBinary(),
27 nullable=True,
28 )
29
30
31 def downgrade() -> None:
32 op.execute(
33 "UPDATE musehub_snapshots SET manifest_blob = '\\x80' WHERE manifest_blob IS NULL"
34 )
35 op.alter_column(
36 "musehub_snapshots",
37 "manifest_blob",
38 existing_type=sa.LargeBinary(),
39 nullable=False,
40 )
File History 2 commits
sha256:1ccb8409daa5aabe577bd26d11b56ed12f3376d64011d0e75a247e81211a66ee docs(mwp4/phase5): tick Phase 5 checkboxes, close musehub#109 Sonnet 4.6 21 days ago
sha256:2c523da45351334b5c4dbefed4dc3dd553b3faa8737a4e6caf301e5dc82141be test(mwp4): Phase 0 RED reproduction tests for RC-4 ordering race Sonnet 4.6 21 days ago