82 lines
2.0 KiB
Python
82 lines
2.0 KiB
Python
from __future__ import with_statement
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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 oslo_config import cfg
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from sqlalchemy import create_engine, pool
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# this is the shipyard config object
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CONF = cfg.CONF
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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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# Interpret the config file for Python logging.
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# This line sets up loggers basically.
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if config.attributes.get('configure_logger', True):
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fileConfig(config.config_file_name)
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target_metadata = None
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def get_url():
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"""
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Returns the url to use instead of using the alembic configuration
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file
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"""
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return CONF.base.postgresql_db
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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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url = get_url()
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# Default code: url = config.get_main_option("sqlalchemy.url")
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context.configure(
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url=url, target_metadata=target_metadata, literal_binds=True)
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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 = create_engine(get_url())
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# Default/generated code:
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# connectable = engine_from_config(
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# config.get_section(config.config_ini_section),
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# prefix='sqlalchemy.',
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# 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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