dbdf04c089
<!-- .github/pull_request_template.md --> ## Description Data model migration for new release ## DCO Affirmation I affirm that all code in every commit of this pull request conforms to the terms of the Topoteretes Developer Certificate of Origin.
140 lines
5.3 KiB
Python
140 lines
5.3 KiB
Python
"""Expand data model info
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Revision ID: e4ebee1091e7
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Revises: ab7e313804ae
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Create Date: 2025-07-24 13:21:30.738486
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.dialects import postgresql
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# revision identifiers, used by Alembic.
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revision: str = "e4ebee1091e7"
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down_revision: Union[str, None] = "ab7e313804ae"
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def _get_column(inspector, table, name, schema=None):
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for col in inspector.get_columns(table, schema=schema):
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if col["name"] == name:
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return col
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return None
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def _index_exists(inspector, table, name, schema=None):
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return any(ix["name"] == name for ix in inspector.get_indexes(table, schema=schema))
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def upgrade() -> None:
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TABLES_TO_DROP = [
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"file_metadata",
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"_dlt_loads",
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"_dlt_version",
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"_dlt_pipeline_state",
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]
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conn = op.get_bind()
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insp = sa.inspect(conn)
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existing = set(insp.get_table_names())
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for tbl in TABLES_TO_DROP:
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if tbl in existing:
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op.drop_table(tbl)
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DATA_TABLE = "data"
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DATA_TENANT_COL = "tenant_id"
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DATA_SIZE_COL = "data_size"
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DATA_TENANT_IDX = "ix_data_tenant_id"
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# --- tenant_id ---
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col = _get_column(insp, DATA_TABLE, DATA_TENANT_COL)
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if col is None:
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op.add_column(
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DATA_TABLE,
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sa.Column(DATA_TENANT_COL, postgresql.UUID(as_uuid=True), nullable=True),
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)
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else:
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# Column exists – fix nullability if needed
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if col.get("nullable", True) is False:
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op.alter_column(
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DATA_TABLE,
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DATA_TENANT_COL,
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existing_type=postgresql.UUID(as_uuid=True),
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nullable=True,
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)
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# --- data_size ---
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col = _get_column(insp, DATA_TABLE, DATA_SIZE_COL)
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if col is None:
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op.add_column(DATA_TABLE, sa.Column(DATA_SIZE_COL, sa.Integer(), nullable=True))
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else:
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# If you also need to change nullability for data_size, do it here
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if col.get("nullable", True) is False:
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op.alter_column(
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DATA_TABLE,
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DATA_SIZE_COL,
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existing_type=sa.Integer(),
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nullable=True,
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)
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# --- index on tenant_id ---
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if not _index_exists(insp, DATA_TABLE, DATA_TENANT_IDX):
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op.create_index(DATA_TENANT_IDX, DATA_TABLE, [DATA_TENANT_COL], unique=False)
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def downgrade() -> None:
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op.drop_index(op.f("ix_data_tenant_id"), table_name="data")
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op.drop_column("data", "data_size")
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op.drop_column("data", "tenant_id")
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op.create_table(
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"_dlt_pipeline_state",
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sa.Column("version", sa.BIGINT(), autoincrement=False, nullable=False),
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sa.Column("engine_version", sa.BIGINT(), autoincrement=False, nullable=False),
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sa.Column("pipeline_name", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column("state", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column(
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"created_at", postgresql.TIMESTAMP(timezone=True), autoincrement=False, nullable=False
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),
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sa.Column("version_hash", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("_dlt_load_id", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column("_dlt_id", sa.VARCHAR(length=128), autoincrement=False, nullable=False),
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)
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op.create_table(
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"_dlt_version",
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sa.Column("version", sa.BIGINT(), autoincrement=False, nullable=False),
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sa.Column("engine_version", sa.BIGINT(), autoincrement=False, nullable=False),
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sa.Column(
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"inserted_at", postgresql.TIMESTAMP(timezone=True), autoincrement=False, nullable=False
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),
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sa.Column("schema_name", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column("version_hash", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column("schema", sa.TEXT(), autoincrement=False, nullable=False),
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)
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op.create_table(
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"_dlt_loads",
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sa.Column("load_id", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column("schema_name", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("status", sa.BIGINT(), autoincrement=False, nullable=False),
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sa.Column(
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"inserted_at", postgresql.TIMESTAMP(timezone=True), autoincrement=False, nullable=False
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),
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sa.Column("schema_version_hash", sa.TEXT(), autoincrement=False, nullable=True),
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)
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op.create_table(
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"file_metadata",
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sa.Column("id", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column("name", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("file_path", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("extension", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("mime_type", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("content_hash", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("owner_id", sa.TEXT(), autoincrement=False, nullable=True),
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sa.Column("_dlt_load_id", sa.TEXT(), autoincrement=False, nullable=False),
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sa.Column("_dlt_id", sa.VARCHAR(length=128), autoincrement=False, nullable=False),
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sa.Column("node_set", sa.TEXT(), autoincrement=False, nullable=True),
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)
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