Initial curated RAGcore source from c16667f0c9397e2bfc8dd0255b114fba23c8d05e

alembic/versions/0011_index_operations.py

@@ -0,0 +1,72 @@
+"""Create the distributed alias-lock and compensating-rollback saga log."""
+
+from __future__ import annotations
+
+import sqlalchemy as sa
+from alembic import op
+
+revision = "0011_index_operations"
+down_revision = "0010_citations"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.execute(sa.text("CREATE SCHEMA IF NOT EXISTS indexes"))
+    op.create_table(
+        "index_build_operations",
+        sa.Column("id", sa.Uuid(), primary_key=True),
+        sa.Column("alias_name", sa.String(128), nullable=False),
+        sa.Column("operation", sa.String(32), nullable=False),
+        sa.Column("status", sa.String(32), nullable=False),
+        sa.Column("owner_token", sa.String(64), nullable=False),
+        sa.Column("collection_name", sa.String(128), nullable=False),
+        sa.Column("previous_collection", sa.String(128), nullable=True),
+        sa.Column(
+            "steps",
+            sa.JSON(),
+            nullable=False,
+            server_default=sa.text("'[]'"),
+        ),
+        sa.Column("started_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("lease_until", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("finished_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("error_code", sa.String(128), nullable=True),
+        sa.Column(
+            "error_details",
+            sa.JSON(),
+            nullable=False,
+            server_default=sa.text("'{}'"),
+        ),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
+        schema="indexes",
+    )
+    op.create_index(
+        "ux_indexes_operations_active_alias",
+        "index_build_operations",
+        ["alias_name"],
+        unique=True,
+        schema="indexes",
+        postgresql_where=sa.text("status = 'in_progress'"),
+    )
+    op.create_index(
+        "ix_indexes_operations_alias_started",
+        "index_build_operations",
+        ["alias_name", "started_at"],
+        schema="indexes",
+    )
+
+
+def downgrade() -> None:
+    op.drop_index(
+        "ix_indexes_operations_alias_started",
+        table_name="index_build_operations",
+        schema="indexes",
+    )
+    op.drop_index(
+        "ux_indexes_operations_active_alias",
+        table_name="index_build_operations",
+        schema="indexes",
+    )
+    op.drop_table("index_build_operations", schema="indexes")
+    op.execute(sa.text("DROP SCHEMA IF EXISTS indexes"))