add observer task block (#1665)

alembic/versions/2025_01_28_0853-3aa0ef96942d_add_block_workflow_run_id_to_workflow_.py

@@ -0,0 +1,41 @@
+"""add block_workflow_run_id to workflow_run_blocks table; add parent_workflow_run_id to workflow_runs table
+
+Revision ID: 3aa0ef96942d
+Revises: 957ad2d1d3f7
+Create Date: 2025-01-28 08:53:06.357361+00:00
+
+"""
+
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = "3aa0ef96942d"
+down_revision: Union[str, None] = "957ad2d1d3f7"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column("workflow_run_blocks", sa.Column("block_workflow_run_id", sa.String(), nullable=True))
+    op.create_foreign_key(None, "workflow_run_blocks", "workflow_runs", ["block_workflow_run_id"], ["workflow_run_id"])
+    op.add_column("workflow_runs", sa.Column("parent_workflow_run_id", sa.String(), nullable=True))
+    op.create_index(
+        op.f("ix_workflow_runs_parent_workflow_run_id"), "workflow_runs", ["parent_workflow_run_id"], unique=False
+    )
+    op.create_foreign_key(None, "workflow_runs", "workflow_runs", ["parent_workflow_run_id"], ["workflow_run_id"])
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(None, "workflow_runs", type_="foreignkey")
+    op.drop_index(op.f("ix_workflow_runs_parent_workflow_run_id"), table_name="workflow_runs")
+    op.drop_column("workflow_runs", "parent_workflow_run_id")
+    op.drop_constraint(None, "workflow_run_blocks", type_="foreignkey")
+    op.drop_column("workflow_run_blocks", "block_workflow_run_id")
+    # ### end Alembic commands ###