feat: add alembic migrations

alembic/versions/76625596c5c3_expand_dataset_database_for_multi_user.py

@@ -0,0 +1,122 @@
+"""Expand dataset database for multi user
+
+Revision ID: 76625596c5c3
+Revises: 211ab850ef3d
+Create Date: 2025-10-30 12:55:20.239562
+
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = "76625596c5c3"
+down_revision: Union[str, None] = "211ab850ef3d"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def _get_column(inspector, table, name, schema=None):
+    for col in inspector.get_columns(table, schema=schema):
+        if col["name"] == name:
+            return col
+    return None
+
+
+def upgrade() -> None:
+    conn = op.get_bind()
+    insp = sa.inspect(conn)
+
+    data = sa.table(
+        "dataset_database",
+        sa.Column("dataset_id", sa.UUID, primary_key=True, index=True),  # Critical for SQLite
+        sa.Column("owner_id", sa.UUID, index=True),
+        sa.Column("vector_database_name", sa.String(), unique=True, nullable=False),
+        sa.Column("graph_database_name", sa.String(), unique=True, nullable=False),
+        sa.Column("vector_database_provider", sa.String(), unique=False, nullable=False),
+        sa.Column("graph_database_provider", sa.String(), unique=False, nullable=False),
+        sa.Column("vector_database_url", sa.String(), unique=False, nullable=True),
+        sa.Column("graph_database_url", sa.String(), unique=False, nullable=True),
+        sa.Column("vector_database_key", sa.String(), unique=False, nullable=True),
+        sa.Column("graph_database_key", sa.String(), unique=False, nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True)),
+        sa.Column("updated_at", sa.DateTime(timezone=True)),
+    )
+
+    vector_database_provider_column = _get_column(
+        insp, "dataset_database", "vector_database_provider"
+    )
+    if not vector_database_provider_column:
+        op.add_column(
+            "dataset_database",
+            sa.Column("vector_database_provider", sa.String(), unique=False, nullable=False),
+        )
+        if op.get_context().dialect.name == "sqlite":
+            with op.batch_alter_table("dataset_database") as batch_op:
+                batch_op.execute(
+                    data.update().values(
+                        vector_database_provider="lancedb",
+                    )
+                )
+        else:
+            conn = op.get_bind()
+            conn.execute(data.update().values(vector_database_provider="lancedb"))
+
+    graph_database_provider_column = _get_column(
+        insp, "dataset_database", "graph_database_provider"
+    )
+    if not graph_database_provider_column:
+        op.add_column(
+            "dataset_database",
+            sa.Column("graph_database_provider", sa.String(), unique=False, nullable=False),
+        )
+        if op.get_context().dialect.name == "sqlite":
+            with op.batch_alter_table("dataset_database") as batch_op:
+                batch_op.execute(
+                    data.update().values(
+                        graph_database_provider="kuzu",
+                    )
+                )
+        else:
+            conn = op.get_bind()
+            conn.execute(data.update().values(graph_database_provider="kuzu"))
+
+    vector_database_url_column = _get_column(insp, "dataset_database", "vector_database_url")
+    if not vector_database_url_column:
+        op.add_column(
+            "dataset_database",
+            sa.Column("vector_database_url", sa.String(), unique=False, nullable=True),
+        )
+
+    graph_database_url_column = _get_column(insp, "dataset_database", "graph_database_url")
+    if not graph_database_url_column:
+        op.add_column(
+            "dataset_database",
+            sa.Column("graph_database_url", sa.String(), unique=False, nullable=True),
+        )
+
+    vector_database_key_column = _get_column(insp, "dataset_database", "vector_database_key")
+    if not vector_database_key_column:
+        op.add_column(
+            "dataset_database",
+            sa.Column("vector_database_key", sa.String(), unique=False, nullable=True),
+        )
+
+    graph_database_key_column = _get_column(insp, "dataset_database", "graph_database_key")
+    if not graph_database_key_column:
+        op.add_column(
+            "dataset_database",
+            sa.Column("graph_database_key", sa.String(), unique=False, nullable=True),
+        )
+
+
+def downgrade() -> None:
+    op.drop_column("dataset_database", "vector_database_provider")
+    op.drop_column("dataset_database", "graph_database_provider")
+    op.drop_column("dataset_database", "vector_database_url")
+    op.drop_column("dataset_database", "graph_database_url")
+    op.drop_column("dataset_database", "vector_database_key")
+    op.drop_column("dataset_database", "graph_database_key")