85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
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"""Durable WorkflowRun — resume semantics, step state, idempotency (G-RUN, G-CTX).
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Extends workflow_instances with resume_at, resume_reason, step_state,
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idempotency_key, and lock_owner for durable/resumable workflow execution.
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Revision ID: 0125
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Revises: 0124
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.dialects.postgresql import JSONB, UUID as PGUUID
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revision = "0125"
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down_revision = "0124"
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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# ── Add durable/resumable columns to workflow_instances ──────────────
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op.add_column(
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"workflow_instances",
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sa.Column("resume_at", sa.DateTime(timezone=True), nullable=True),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("resume_reason", sa.String(50), nullable=True),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("step_state", JSONB, nullable=False, server_default="{}"),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("idempotency_key", sa.String(255), nullable=True),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("lock_owner", sa.String(100), nullable=True),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("lock_expires_at", sa.DateTime(timezone=True), nullable=True),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("error_message", sa.Text, nullable=True),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("retry_count", sa.Integer, nullable=False, server_default="0"),
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)
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op.add_column(
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"workflow_instances",
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sa.Column("max_retries", sa.Integer, nullable=False, server_default="3"),
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)
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# Index for finding workflows that need to be resumed
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op.create_index(
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"ix_wf_instances_resume",
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"workflow_instances",
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["tenant_id", "status", "resume_at"],
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)
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# Index for idempotency key lookup
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op.create_index(
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"ix_wf_instances_idempotency",
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"workflow_instances",
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["tenant_id", "idempotency_key"],
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)
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def downgrade() -> None:
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op.drop_index("ix_wf_instances_idempotency", table_name="workflow_instances")
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op.drop_index("ix_wf_instances_resume", table_name="workflow_instances")
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op.drop_column("workflow_instances", "max_retries")
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op.drop_column("workflow_instances", "retry_count")
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op.drop_column("workflow_instances", "error_message")
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op.drop_column("workflow_instances", "lock_expires_at")
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op.drop_column("workflow_instances", "lock_owner")
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op.drop_column("workflow_instances", "idempotency_key")
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op.drop_column("workflow_instances", "step_state")
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op.drop_column("workflow_instances", "resume_reason")
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op.drop_column("workflow_instances", "resume_at")
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