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70 lines
2.0 KiB
Python
70 lines
2.0 KiB
Python
import os
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from logging.config import fileConfig
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from urllib.parse import unquote
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from sqlalchemy import create_engine, pool
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from sqlalchemy.engine.url import make_url
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from alembic import context
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from src.models import Base
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# Alembic Config object
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config = context.config
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# Override sqlalchemy.url from environment if set
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database_url = os.environ.get("DATABASE_URL")
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if database_url:
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# Alembic needs the synchronous driver; asyncpg -> psycopg2
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database_url = database_url.replace("postgresql+asyncpg://", "postgresql://")
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# Decode URL-encoded characters (e.g. %40 -> @)
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database_url = unquote(database_url)
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config.set_main_option("sqlalchemy.url", database_url)
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# Set up Python logging from the config file
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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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def run_migrations_offline() -> None:
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"""Run migrations in 'offline' mode."""
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url = config.get_main_option("sqlalchemy.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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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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"""Run migrations in 'online' mode.
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Use create_engine directly to bypass ConfigParser URL parsing
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which mishandles special characters in passwords.
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"""
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url = config.get_main_option("sqlalchemy.url")
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# Ensure dialect is postgresql (not postgres)
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if url.startswith("postgres://"):
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url = "postgresql://" + url[len("postgres://"):]
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connectable = create_engine(url, poolclass=pool.NullPool)
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with connectable.connect() as 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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)
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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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