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# Copyright (c) 2005-2009, REvolution Computing, Inc.
#
# NetWorkSpaces 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
#
"""Mock objects, used both for testing and for the internal plumbing of the
Babelfish and monitors.
"""
# these dummy classes are used by the objects that want to pretend
# they are clients of the nws server.
from twisted.python import log
from nwss.protoutils import WsTracker, WsNameMap
from nwss.base import DIRECT_STRING, ERROR_VALUE
from nwss.base import Response, Value
import nwss
_DEBUG = nwss.config.is_debug_enabled('NWS:mock')
__all__ = ['MockTransport', 'MockConnection', 'DummyConnection']
class MockTransport(object):
#pylint: disable-msg=R0903
"""Mock 'transport' object, mimicking the various transport objects from
Twisted. Presently, only used indirectly (i.e. as part of a
DummyConnection).
"""
def __init__(self):
self.sessionno = -1
def write(self, data):
#pylint: disable-msg=R0201
"""Override of Twisted 'write' method."""
if _DEBUG:
log.msg("MockTransport.write: data = %s" % repr(data))
class MockConnection(object):
#pylint: disable-msg=R0903
"""Mock 'connection' object, mimicking the interface of the NwsProtocol
object in a fairly minimal way.
"""
transport_factory = MockTransport
def __init__(self, peer_id='[Mock]'):
"""Initialize a new mock connection:
Parameters:
peer_id - peer id to report in monitoring
"""
self.owned_workspaces = WsTracker()
self.workspace_names = WsNameMap()
self.peer = peer_id
self.transport = self.transport_factory()
def set_blocking_var(self, var, blocklist):
"""Set the currently "blocking" variable."""
pass
def send_short_response(self, response=None):
#pylint: disable-msg=R0201
"""Implementation of NwsProtocol 'send_short_response' interface."""
pass
def send_long_response(self, response):
#pylint: disable-msg=R0201
"""Implementation of NwsProtocol 'send_long_response' interface."""
if response is None:
response = Response(value=ERROR_VALUE)
assert response.value is not None
def send_error(self, reason, status=1, long_reply=False):
"""Send an error message to the other side."""
pass
class DummyConnection(MockConnection):
#pylint: disable-msg=R0903
"""Simple dummy 'connection' object, used throughout the web interface."""
def __init__(self, send_reply=None, peer_id='[Web Interface]'):
"""Initialize a new dummy connection:
Parameters:
send_reply - function to receive replies
peer_id - peer id to report in monitoring
"""
MockConnection.__init__(self, peer_id)
if send_reply:
self.real_send_reply = send_reply
def __str__(self):
return 'DummyConnection[%s]' % self.peer
def send_long_response(self, response):
"""Implementation of NwsProtocol 'send_long_response' interface."""
if response is None:
response = Response(value=ERROR_VALUE)
assert response.value is not None
if hasattr(self, 'real_send_reply'):
status = response.status
metadata = response.metadata
value = response.value
if isinstance(value, str):
value = Value(DIRECT_STRING, value)
return self.real_send_reply(status,
metadata,
value)
else:
return None
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