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7c65604dad
* Moved migrations/env.py's logging initialization and migration execution into a `__name__ == "__main__"` stanza so it doesn't immediately happen when imported by another module. Signed-off-by: Kevin Morris <kevr@0cost.org>
75 lines
1.9 KiB
Python
75 lines
1.9 KiB
Python
import logging.config
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import sqlalchemy
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from alembic import context
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import aurweb.db
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import aurweb.schema
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# this is the Alembic Config object, which provides
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# access to the values within the .ini file in use.
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config = context.config
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# model MetaData for autogenerating migrations
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target_metadata = aurweb.schema.metadata
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# other values from the config, defined by the needs of env.py,
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# can be acquired:
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# my_important_option = config.get_main_option("my_important_option")
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# ... etc.
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def run_migrations_offline():
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"""Run migrations in 'offline' mode.
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This configures the context with just a URL
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and not an Engine, though an Engine is acceptable
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here as well. By skipping the Engine creation
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we don't even need a DBAPI to be available.
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Calls to context.execute() here emit the given string to the
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script output.
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"""
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context.configure(
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url=aurweb.db.get_sqlalchemy_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():
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"""Run migrations in 'online' mode.
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In this scenario we need to create an Engine
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and associate a connection with the context.
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"""
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connectable = sqlalchemy.create_engine(
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aurweb.db.get_sqlalchemy_url(),
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poolclass=sqlalchemy.pool.NullPool,
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)
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with connectable.connect() as connection:
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context.configure(
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connection=connection, 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 __name__ == "__main__":
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# Interpret the config file for Python logging.
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# This line sets up loggers basically.
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logging.config.fileConfig(config.config_file_name)
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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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