87 lines
2.5 KiB
Python
87 lines
2.5 KiB
Python
from __future__ import with_statement
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import os
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from alembic import context
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from sqlalchemy import engine_from_config, pool
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from logging.config import fileConfig
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from urllib import unquote, quote
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from peewee import SqliteDatabase
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from data.database import all_models, db
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from app import app
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from data.model.sqlalchemybridge import gen_sqlalchemy_metadata
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from util.morecollections import AttrDict
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config = context.config
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config.set_main_option('sqlalchemy.url', unquote(app.config['DB_URI']))
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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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fileConfig(config.config_file_name)
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# add your model's MetaData object here
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# for 'autogenerate' support
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# from myapp import mymodel
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# target_metadata = mymodel.Base.metadata
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target_metadata = gen_sqlalchemy_metadata(all_models)
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tables = AttrDict(target_metadata.tables)
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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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url = unquote(app.config['DB_URI'])
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context.configure(url=url, target_metadata=target_metadata, transactional_ddl=True)
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with context.begin_transaction():
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context.run_migrations(tables=tables)
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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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if isinstance(db.obj, SqliteDatabase) and not 'GENMIGRATE' in os.environ and not 'DB_URI' in os.environ:
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print ('Skipping Sqlite migration!')
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return
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engine = 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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connection = engine.connect()
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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transactional_ddl=False,
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)
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try:
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with context.begin_transaction():
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context.run_migrations(tables=tables)
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finally:
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connection.close()
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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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