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# Copyright (C) 2007 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from bzrlib.hooks import Hooks
from bzrlib.tests.test_ftp_transport import TestCaseWithFTPServer
from bzrlib.transport import (
register_transport,
unregister_transport,
)
from bzrlib.transport.ftp import FtpTransport
class TransportHooks(Hooks):
"""Dict-mapping hook name to a list of callables for transport hooks"""
def __init__(self):
Hooks.__init__(self)
# invoked when the transport is about to create or reuse
# an ftp connection. The api signature is (transport, ftp_instance)
self['get_FTP'] = []
class InstrumentedTransport(FtpTransport):
"""Instrumented transport class to test commands behavior"""
hooks = TransportHooks()
class ConnectionHookedTransport(InstrumentedTransport):
"""Transport instrumented to inspect connections"""
def _get_FTP(self):
"""See FtpTransport._get_FTP.
This is where we can detect if the connection is reused
or if a new one is created. This a bit ugly, but it's the
easiest until transport classes are refactored.
"""
instance = super(ConnectionHookedTransport, self)._get_FTP()
for hook in self.hooks['get_FTP']:
hook(self, instance)
return instance
class TestCaseWithConnectionHookedTransport(TestCaseWithFTPServer):
def setUp(self):
super(TestCaseWithConnectionHookedTransport, self).setUp()
ConnectionHookedTransport.hooks.install_hook('get_FTP',
self.get_connection_hook)
# Make our instrumented transport the default ftp transport
register_transport('ftp://', ConnectionHookedTransport)
def cleanup():
InstrumentedTransport.hooks = TransportHooks()
unregister_transport('ftp://', ConnectionHookedTransport)
self.addCleanup(cleanup)
self.connections = []
def get_connection_hook(self, transport, connection):
if connection is not None and connection not in self.connections:
self.connections.append(connection)
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