46 lines
1.4 KiB
Python
46 lines
1.4 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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def make_dsn(engine, host, port, user, passwd, name):
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"""Constructs DSN string that can be used to connect to database.
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If host starts with '/' it will be treated as a socket and port will be
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ingored.
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:param engine: DB engine
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:param host: DB host or socket
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:param port: DB port (empty if using socket)
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:param user: DB user name
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:param passwd: DB user password
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:param name: name of the database
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"""
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if host.startswith('/'):
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# use socket
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dsn = "{engine}://{user}:{passwd}@/{name}?host={host}"
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else:
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# use regular connection
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dsn = "{engine}://{user}:{passwd}@{host}:{port}/{name}"
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return dsn.format(
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engine=engine,
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host=host,
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port=port,
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user=user,
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passwd=passwd,
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name=name,
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)
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