56 lines
1.6 KiB
Python
56 lines
1.6 KiB
Python
# standard imports
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import logging
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import os
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# external imports
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import alembic
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import alembic.config
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# local imports
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from chainqueue.db.models.base import SessionBase
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from chainqueue.db import dsn_from_config
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logg = logging.getLogger(__name__)
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db_config = {
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'DATABASE_ENGINE': 'sqlite',
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'DATABASE_DRIVER': 'pysqlite',
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'DATABASE_NAME': 'chainqueue.sqlite',
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}
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class ChainQueueDb:
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base = SessionBase
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def __init__(self, debug=False):
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logg.debug('config {}'.format(db_config))
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self.dsn = dsn_from_config(db_config)
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self.base.poolable = False
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self.base.transactional = False
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self.base.procedural = False
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self.base.connect(self.dsn, debug=debug) # TODO: evaluates to "true" even if string is 0
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rootdir = os.path.join(os.path.dirname(os.path.dirname(__file__)), '..')
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dbdir = os.path.join(rootdir, 'chainqueue', 'db')
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#migrationsdir = os.path.join(dbdir, 'migrations', db_config.get('DATABASE_ENGINE'))
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migrationsdir = os.path.join(dbdir, 'migrations', 'default')
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logg.info('using migrations directory {}'.format(migrationsdir))
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ac = alembic.config.Config(os.path.join(migrationsdir, 'alembic.ini'))
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ac.set_main_option('sqlalchemy.url', self.dsn)
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ac.set_main_option('script_location', migrationsdir)
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alembic.command.downgrade(ac, 'base')
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alembic.command.upgrade(ac, 'head')
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def bind_session(self, session=None):
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return self.base.bind_session(session)
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def release_session(self, session=None):
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return self.base.release_session(session)
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