54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
# standard imports
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import os
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import logging
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# local imports
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from chainsyncer.db.models.base import SessionBase
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logg = logging.getLogger()
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def dsn_from_config(config):
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"""Generate a dsn string from the provided config dict.
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The config dict must include all well-known database connection parameters, and must implement the method "get(key)" to retrieve them. Any missing parameters will be be rendered as the literal string "None"
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:param config: Configuration object
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:type config: Varies
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:returns: dsn string
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:rtype: str
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"""
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scheme = config.get('DATABASE_ENGINE')
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if config.get('DATABASE_DRIVER') != None:
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scheme += '+{}'.format(config.get('DATABASE_DRIVER'))
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dsn = ''
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dsn_out = ''
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if config.get('DATABASE_ENGINE') == 'sqlite':
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dsn = '{}:///{}'.format(
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scheme,
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config.get('DATABASE_NAME'),
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)
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dsn_out = dsn
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else:
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dsn = '{}://{}:{}@{}:{}/{}'.format(
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scheme,
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config.get('DATABASE_USER'),
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config.get('DATABASE_PASSWORD'),
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config.get('DATABASE_HOST'),
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config.get('DATABASE_PORT'),
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config.get('DATABASE_NAME'),
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)
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dsn_out = '{}://{}:{}@{}:{}/{}'.format(
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scheme,
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config.get('DATABASE_USER'),
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'***',
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config.get('DATABASE_HOST'),
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config.get('DATABASE_PORT'),
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config.get('DATABASE_NAME'),
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)
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logg.debug('parsed dsn from config: {}'.format(dsn_out))
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return dsn
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