TopicDump: obsoleted, replaced. deleted
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"""
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TopicDump - periodically write out the topic of channels
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Copyright (C) 2013 Brian S. Stephan
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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import MySQLdb as mdb
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import os
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from Module import Module
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class TopicDump(Module):
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"""For each topic the bot is in, output the topic to a file."""
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def db_init(self):
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"""Set up the database tables, if they don't exist."""
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db = self.get_db()
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cur = db.cursor(mdb.cursors.DictCursor)
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try:
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version = self.db_module_registered(self.__class__.__name__)
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if version is None:
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version = 1
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cur.execute('''
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CREATE TABLE topicdump_config (
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destdir VARCHAR(255) NOT NULL
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) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_general_ci
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''')
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db.commit()
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self.db_register_module_version(self.__class__.__name__,
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version)
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except mdb.Error as e:
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db.rollback()
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self.log.error("database error trying to create tables")
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self.log.exception(e)
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raise
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finally: cur.close()
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def register_handlers(self):
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"""Hook handler functions into the IRC library."""
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self.irc.server.add_global_handler('topic', self._on_topic)
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def unregister_handlers(self):
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"""Unhook handler functions from the IRC library."""
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self.irc.server.remove_global_handler('topic', self._on_topic)
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def _on_topic(self, connection, event):
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"""Write topics to a file named after the source channel."""
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self.log.debug("topic change")
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self.log.debug(event.arguments()[0])
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self.log.debug(event.target())
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target_dir = self._get_destdir()
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if target_dir:
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target_file = '{0:s}.topic'.format(event.target())
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target = os.path.abspath(os.path.join(target_dir, target_file))
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self.log.debug("target file: {0:s}".format(target))
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self.log.info("writing topic to {0:s}".format(target))
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with open(target, 'w') as f:
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f.write(event.arguments()[0] + '\n')
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def _get_destdir(self):
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"""Retrieve the destination directory from the database.
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Returns:
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string: the destination to write topics to
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"""
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target = None
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db = self.get_db()
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cur = db.cursor(mdb.cursors.DictCursor)
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try:
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query = '''
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SELECT destdir FROM topicdump_config
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'''
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cur.execute(query, ())
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result = cur.fetchone()
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if result:
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target = result['destdir']
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except mdb.Error as e:
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self.log.error("database error while getting destination")
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self.log.exception(e)
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finally: cur.close()
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return target
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# vi:tabstop=4:expandtab:autoindent
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