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85 lines
4.1 KiB
Python
85 lines
4.1 KiB
Python
# Copyright (c) 2006,2007,2008 Mitch Garnaat http://garnaat.org/
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish, dis-
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# tribute, sublicense, and/or sell copies of the Software, and to permit
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# persons to whom the Software is furnished to do so, subject to the fol-
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# lowing conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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import boto
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def get_manager(cls):
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"""
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Returns the appropriate Manager class for a given Model class. It
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does this by looking in the boto config for a section like this::
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[DB]
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db_type = SimpleDB
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db_user = <aws access key id>
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db_passwd = <aws secret access key>
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db_name = my_domain
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[DB_TestBasic]
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db_type = SimpleDB
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db_user = <another aws access key id>
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db_passwd = <another aws secret access key>
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db_name = basic_domain
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db_port = 1111
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The values in the DB section are "generic values" that will be used
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if nothing more specific is found. You can also create a section for
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a specific Model class that gives the db info for that class.
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In the example above, TestBasic is a Model subclass.
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"""
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db_user = boto.config.get('DB', 'db_user', None)
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db_passwd = boto.config.get('DB', 'db_passwd', None)
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db_type = boto.config.get('DB', 'db_type', 'SimpleDB')
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db_name = boto.config.get('DB', 'db_name', None)
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db_table = boto.config.get('DB', 'db_table', None)
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db_host = boto.config.get('DB', 'db_host', "sdb.amazonaws.com")
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db_port = boto.config.getint('DB', 'db_port', 443)
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enable_ssl = boto.config.getbool('DB', 'enable_ssl', True)
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sql_dir = boto.config.get('DB', 'sql_dir', None)
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debug = boto.config.getint('DB', 'debug', 0)
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# first see if there is a fully qualified section name in the Boto config
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module_name = cls.__module__.replace('.', '_')
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db_section = 'DB_' + module_name + '_' + cls.__name__
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if not boto.config.has_section(db_section):
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db_section = 'DB_' + cls.__name__
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if boto.config.has_section(db_section):
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db_user = boto.config.get(db_section, 'db_user', db_user)
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db_passwd = boto.config.get(db_section, 'db_passwd', db_passwd)
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db_type = boto.config.get(db_section, 'db_type', db_type)
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db_name = boto.config.get(db_section, 'db_name', db_name)
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db_table = boto.config.get(db_section, 'db_table', db_table)
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db_host = boto.config.get(db_section, 'db_host', db_host)
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db_port = boto.config.getint(db_section, 'db_port', db_port)
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enable_ssl = boto.config.getint(db_section, 'enable_ssl', enable_ssl)
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debug = boto.config.getint(db_section, 'debug', debug)
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elif hasattr(cls, "_db_name") and cls._db_name is not None:
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# More specific then the generic DB config is any _db_name class property
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db_name = cls._db_name
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elif hasattr(cls.__bases__[0], "_manager"):
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return cls.__bases__[0]._manager
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if db_type == 'SimpleDB':
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from boto.sdb.db.manager.sdbmanager import SDBManager
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return SDBManager(cls, db_name, db_user, db_passwd,
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db_host, db_port, db_table, sql_dir, enable_ssl)
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elif db_type == 'XML':
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from boto.sdb.db.manager.xmlmanager import XMLManager
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return XMLManager(cls, db_name, db_user, db_passwd,
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db_host, db_port, db_table, sql_dir, enable_ssl)
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else:
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raise ValueError('Unknown db_type: %s' % db_type)
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