from __future__ import with_statement
from alembic import context
import sqlalchemy
import logging
logging.basicConfig(level=logging.INFO, format="[%(asctime)s] %(levelname)s:%(name)s:%(message)s")
target_metadata = None
def run_migrations_offline():
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
context.configure(url=context.config.get_section_option("lrrbot", "postgres", 'postgres:///lrrbot'),
target_metadata=target_metadata, literal_binds=True)
with context.begin_transaction():
context.run_migrations()
def run_migrations_online():
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
connectable = sqlalchemy.create_engine(context.config.get_section_option("lrrbot", "postgres", 'postgres:///lrrbot'))
with connectable.connect() as connection:
context.configure(connection=connection, target_metadata=target_metadata)
with context.begin_transaction():
context.run_migrations()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()
