86 lines
2.6 KiB
Python
86 lines
2.6 KiB
Python
from __future__ import annotations
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import os
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from logging.config import fileConfig
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from alembic import context
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from sqlalchemy import engine_from_config, pool, text
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from iaai_sync_service.models import Base
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config = context.config
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if config.config_file_name is not None:
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fileConfig(config.config_file_name)
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target_metadata = Base.metadata
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SYNC_VERSION_TABLE = "iaai_sync_alembic_version"
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LEGACY_VERSION_TABLE = "alembic_version"
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SYNC_REVISIONS = {
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"0001_ensure_sync_schema",
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"0002_extend_origin_enum_for_iaai",
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"0003_create_iaai_source_tables",
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}
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def _normalize_database_url(url: str) -> str:
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normalized = url.strip()
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if normalized.startswith("jdbc:"):
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normalized = normalized[len("jdbc:") :]
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if normalized.startswith("postgres://"):
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normalized = "postgresql+psycopg://" + normalized[len("postgres://") :]
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elif normalized.startswith("postgresql://"):
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normalized = "postgresql+psycopg://" + normalized[len("postgresql://") :]
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return normalized
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def _database_url() -> str:
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raw_url = os.getenv("DATABASE_URL", config.get_main_option("sqlalchemy.url"))
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return _normalize_database_url(raw_url)
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def _select_version_table(connection) -> str: # noqa: ANN001
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inspector = connection.dialect
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if inspector.has_table(connection, SYNC_VERSION_TABLE):
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return SYNC_VERSION_TABLE
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if inspector.has_table(connection, LEGACY_VERSION_TABLE):
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version_num = connection.execute(text(f"SELECT version_num FROM {LEGACY_VERSION_TABLE} LIMIT 1")).scalar()
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if version_num in SYNC_REVISIONS:
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return LEGACY_VERSION_TABLE
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return SYNC_VERSION_TABLE
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def run_migrations_offline() -> None:
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url = _database_url()
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context.configure(
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url=url,
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target_metadata=target_metadata,
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version_table=SYNC_VERSION_TABLE,
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literal_binds=True,
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dialect_opts={"paramstyle": "named"},
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)
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online() -> None:
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configuration = config.get_section(config.config_ini_section) or {}
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configuration["sqlalchemy.url"] = _database_url()
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connectable = engine_from_config(configuration, prefix="sqlalchemy.", poolclass=pool.NullPool)
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with connectable.connect() as connection:
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version_table = _select_version_table(connection)
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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version_table=version_table,
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)
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with context.begin_transaction():
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context.run_migrations()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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