root / test / ganeti.daemon_unittest.py @ 495ba852
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#!/usr/bin/python
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#
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# Copyright (C) 2010 Google Inc.
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#
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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 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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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, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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"""Script for unittesting the daemon module"""
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import unittest |
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import signal |
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import os |
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import socket |
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import time |
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import tempfile |
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import shutil |
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from ganeti import daemon |
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from ganeti import errors |
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from ganeti import utils |
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import testutils |
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class TestMainloop(testutils.GanetiTestCase): |
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"""Test daemon.Mainloop"""
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def setUp(self): |
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testutils.GanetiTestCase.setUp(self)
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self.mainloop = daemon.Mainloop()
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self.sendsig_events = []
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self.onsignal_events = []
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def _CancelEvent(self, handle): |
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self.mainloop.scheduler.cancel(handle)
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def _SendSig(self, sig): |
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self.sendsig_events.append(sig)
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os.kill(os.getpid(), sig) |
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def OnSignal(self, signum): |
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self.onsignal_events.append(signum)
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def testRunAndTermBySched(self): |
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self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGTERM]) |
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self.mainloop.Run() # terminates by _SendSig being scheduled |
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self.assertEquals(self.sendsig_events, [signal.SIGTERM]) |
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def testTerminatingSignals(self): |
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self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.scheduler.enter(0.2, 1, self._SendSig, [signal.SIGINT]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, [signal.SIGCHLD, signal.SIGINT]) |
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self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGTERM]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, [signal.SIGCHLD, signal.SIGINT, |
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signal.SIGTERM]) |
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def testSchedulerCancel(self): |
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handle = self.mainloop.scheduler.enter(0.1, 1, self._SendSig, |
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[signal.SIGTERM]) |
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self.mainloop.scheduler.cancel(handle)
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self.mainloop.scheduler.enter(0.2, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.scheduler.enter(0.3, 1, self._SendSig, [signal.SIGTERM]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, [signal.SIGCHLD, signal.SIGTERM]) |
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def testRegisterSignal(self): |
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self.mainloop.RegisterSignal(self) |
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self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGCHLD]) |
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handle = self.mainloop.scheduler.enter(0.1, 1, self._SendSig, |
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[signal.SIGTERM]) |
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self.mainloop.scheduler.cancel(handle)
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self.mainloop.scheduler.enter(0.2, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.scheduler.enter(0.3, 1, self._SendSig, [signal.SIGTERM]) |
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# ...not delievered because they are scheduled after TERM
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self.mainloop.scheduler.enter(0.4, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.scheduler.enter(0.5, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, |
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[signal.SIGCHLD, signal.SIGCHLD, signal.SIGTERM]) |
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self.assertEquals(self.onsignal_events, self.sendsig_events) |
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def testDeferredCancel(self): |
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self.mainloop.RegisterSignal(self) |
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now = time.time() |
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self.mainloop.scheduler.enterabs(now + 0.1, 1, self._SendSig, |
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[signal.SIGCHLD]) |
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handle1 = self.mainloop.scheduler.enterabs(now + 0.3, 2, self._SendSig, |
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[signal.SIGCHLD]) |
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handle2 = self.mainloop.scheduler.enterabs(now + 0.4, 2, self._SendSig, |
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[signal.SIGCHLD]) |
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self.mainloop.scheduler.enterabs(now + 0.2, 1, self._CancelEvent, |
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[handle1]) |
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self.mainloop.scheduler.enterabs(now + 0.2, 1, self._CancelEvent, |
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[handle2]) |
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self.mainloop.scheduler.enter(0.5, 1, self._SendSig, [signal.SIGTERM]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, [signal.SIGCHLD, signal.SIGTERM]) |
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self.assertEquals(self.onsignal_events, self.sendsig_events) |
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def testReRun(self): |
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self.mainloop.RegisterSignal(self) |
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self.mainloop.scheduler.enter(0.1, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.scheduler.enter(0.2, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.scheduler.enter(0.3, 1, self._SendSig, [signal.SIGTERM]) |
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self.mainloop.scheduler.enter(0.4, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.scheduler.enter(0.5, 1, self._SendSig, [signal.SIGCHLD]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, |
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[signal.SIGCHLD, signal.SIGCHLD, signal.SIGTERM]) |
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self.assertEquals(self.onsignal_events, self.sendsig_events) |
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self.mainloop.scheduler.enter(0.3, 1, self._SendSig, [signal.SIGTERM]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, |
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[signal.SIGCHLD, signal.SIGCHLD, signal.SIGTERM, |
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signal.SIGCHLD, signal.SIGCHLD, signal.SIGTERM]) |
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self.assertEquals(self.onsignal_events, self.sendsig_events) |
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def testPriority(self): |
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# for events at the same time, the highest priority one executes first
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now = time.time() |
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self.mainloop.scheduler.enterabs(now + 0.1, 2, self._SendSig, |
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[signal.SIGCHLD]) |
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self.mainloop.scheduler.enterabs(now + 0.1, 1, self._SendSig, |
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[signal.SIGTERM]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, [signal.SIGTERM]) |
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self.mainloop.scheduler.enter(0.2, 1, self._SendSig, [signal.SIGTERM]) |
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self.mainloop.Run()
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self.assertEquals(self.sendsig_events, |
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[signal.SIGTERM, signal.SIGCHLD, signal.SIGTERM]) |
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class _MyAsyncUDPSocket(daemon.AsyncUDPSocket): |
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def __init__(self): |
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daemon.AsyncUDPSocket.__init__(self)
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self.received = []
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self.error_count = 0 |
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def handle_datagram(self, payload, ip, port): |
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self.received.append((payload))
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if payload == "terminate": |
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os.kill(os.getpid(), signal.SIGTERM) |
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elif payload == "error": |
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raise errors.GenericError("error") |
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def handle_error(self): |
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self.error_count += 1 |
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raise
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class TestAsyncUDPSocket(testutils.GanetiTestCase): |
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"""Test daemon.AsyncUDPSocket"""
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def setUp(self): |
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testutils.GanetiTestCase.setUp(self)
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self.mainloop = daemon.Mainloop()
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self.server = _MyAsyncUDPSocket()
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self.client = _MyAsyncUDPSocket()
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self.server.bind(("127.0.0.1", 0)) |
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self.port = self.server.getsockname()[1] |
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# Save utils.IgnoreSignals so we can do evil things to it...
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self.saved_utils_ignoresignals = utils.IgnoreSignals
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def tearDown(self): |
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self.server.close()
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self.client.close()
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# ...and restore it as well
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utils.IgnoreSignals = self.saved_utils_ignoresignals
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testutils.GanetiTestCase.tearDown(self)
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def testNoDoubleBind(self): |
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self.assertRaises(socket.error, self.client.bind, ("127.0.0.1", self.port)) |
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def _ThreadedClient(self, payload): |
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self.client.enqueue_send("127.0.0.1", self.port, payload) |
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print "sending %s" % payload |
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while self.client.writable(): |
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self.client.handle_write()
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def testAsyncClientServer(self): |
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self.client.enqueue_send("127.0.0.1", self.port, "p1") |
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self.client.enqueue_send("127.0.0.1", self.port, "p2") |
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self.client.enqueue_send("127.0.0.1", self.port, "terminate") |
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self.mainloop.Run()
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self.assertEquals(self.server.received, ["p1", "p2", "terminate"]) |
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def testSyncClientServer(self): |
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self.client.enqueue_send("127.0.0.1", self.port, "p1") |
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self.client.enqueue_send("127.0.0.1", self.port, "p2") |
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while self.client.writable(): |
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self.client.handle_write()
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self.server.process_next_packet()
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self.assertEquals(self.server.received, ["p1"]) |
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self.server.process_next_packet()
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self.assertEquals(self.server.received, ["p1", "p2"]) |
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self.client.enqueue_send("127.0.0.1", self.port, "p3") |
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while self.client.writable(): |
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self.client.handle_write()
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self.server.process_next_packet()
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self.assertEquals(self.server.received, ["p1", "p2", "p3"]) |
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def testErrorHandling(self): |
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self.client.enqueue_send("127.0.0.1", self.port, "p1") |
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self.client.enqueue_send("127.0.0.1", self.port, "p2") |
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self.client.enqueue_send("127.0.0.1", self.port, "error") |
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self.client.enqueue_send("127.0.0.1", self.port, "p3") |
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self.client.enqueue_send("127.0.0.1", self.port, "error") |
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self.client.enqueue_send("127.0.0.1", self.port, "terminate") |
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self.assertRaises(errors.GenericError, self.mainloop.Run) |
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self.assertEquals(self.server.received, |
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["p1", "p2", "error"]) |
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self.assertEquals(self.server.error_count, 1) |
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self.assertRaises(errors.GenericError, self.mainloop.Run) |
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self.assertEquals(self.server.received, |
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["p1", "p2", "error", "p3", "error"]) |
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self.assertEquals(self.server.error_count, 2) |
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self.mainloop.Run()
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self.assertEquals(self.server.received, |
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["p1", "p2", "error", "p3", "error", "terminate"]) |
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self.assertEquals(self.server.error_count, 2) |
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def testSignaledWhileReceiving(self): |
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utils.IgnoreSignals = lambda fn, *args, **kwargs: None |
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self.client.enqueue_send("127.0.0.1", self.port, "p1") |
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self.client.enqueue_send("127.0.0.1", self.port, "p2") |
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self.server.handle_read()
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self.assertEquals(self.server.received, []) |
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self.client.enqueue_send("127.0.0.1", self.port, "terminate") |
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utils.IgnoreSignals = self.saved_utils_ignoresignals
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self.mainloop.Run()
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self.assertEquals(self.server.received, ["p1", "p2", "terminate"]) |
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class _MyAsyncStreamServer(daemon.AsyncStreamServer): |
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def __init__(self, family, address, handle_connection_fn): |
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daemon.AsyncStreamServer.__init__(self, family, address)
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self.handle_connection_fn = handle_connection_fn
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self.error_count = 0 |
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self.expt_count = 0 |
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def handle_connection(self, connected_socket, client_address): |
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self.handle_connection_fn(connected_socket, client_address)
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def handle_error(self): |
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self.error_count += 1 |
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self.close()
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raise
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def handle_expt(self): |
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self.expt_count += 1 |
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self.close()
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class _MyMessageStreamHandler(daemon.AsyncTerminatedMessageStream): |
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def __init__(self, connected_socket, client_address, terminator, family, |
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message_fn, client_id): |
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daemon.AsyncTerminatedMessageStream.__init__(self, connected_socket,
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client_address, |
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terminator, family) |
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self.message_fn = message_fn
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self.client_id = client_id
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self.error_count = 0 |
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def handle_message(self, message, message_id): |
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self.message_fn(self, message, message_id) |
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def handle_error(self): |
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self.error_count += 1 |
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raise
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class TestAsyncStreamServerTCP(testutils.GanetiTestCase): |
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"""Test daemon.AsyncStreamServer with a TCP connection"""
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family = socket.AF_INET |
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def setUp(self): |
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testutils.GanetiTestCase.setUp(self)
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self.mainloop = daemon.Mainloop()
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self.address = self.getAddress() |
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self.server = _MyAsyncStreamServer(self.family, self.address, |
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self.handle_connection)
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self.client_handler = _MyMessageStreamHandler
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self.terminator = "\3" |
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self.address = self.server.getsockname() |
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self.clients = []
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self.connections = []
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self.messages = {}
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self.connect_terminate_count = 0 |
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self.message_terminate_count = 0 |
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self.next_client_id = 0 |
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# Save utils.IgnoreSignals so we can do evil things to it...
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self.saved_utils_ignoresignals = utils.IgnoreSignals
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def tearDown(self): |
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for c in self.clients: |
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c.close() |
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for c in self.connections: |
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c.close() |
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self.server.close()
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# ...and restore it as well
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utils.IgnoreSignals = self.saved_utils_ignoresignals
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testutils.GanetiTestCase.tearDown(self)
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def getAddress(self): |
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return ("127.0.0.1", 0) |
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def countTerminate(self, name): |
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value = getattr(self, name) |
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if value is not None: |
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value -= 1
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setattr(self, name, value) |
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if value <= 0: |
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os.kill(os.getpid(), signal.SIGTERM) |
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def handle_connection(self, connected_socket, client_address): |
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client_id = self.next_client_id
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self.next_client_id += 1 |
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client_handler = self.client_handler(connected_socket, client_address,
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self.terminator, self.family, |
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self.handle_message,
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client_id) |
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self.connections.append(client_handler)
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self.countTerminate("connect_terminate_count") |
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def handle_message(self, handler, message, message_id): |
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self.messages.setdefault(handler.client_id, [])
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# We should just check that the message_ids are monotonically increasing.
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# If in the unit tests we never remove messages from the received queue,
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# though, we can just require that the queue length is the same as the
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# message id, before pushing the message to it. This forces a more
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# restrictive check, but we can live with this for now.
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self.assertEquals(len(self.messages[handler.client_id]), message_id) |
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self.messages[handler.client_id].append(message)
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if message == "error": |
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raise errors.GenericError("error") |
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self.countTerminate("message_terminate_count") |
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def getClient(self): |
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client = socket.socket(self.family, socket.SOCK_STREAM)
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client.connect(self.address)
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self.clients.append(client)
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return client
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def tearDown(self): |
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testutils.GanetiTestCase.tearDown(self)
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self.server.close()
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def testConnect(self): |
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self.getClient()
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self.mainloop.Run()
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self.assertEquals(len(self.connections), 1) |
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self.getClient()
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self.mainloop.Run()
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self.assertEquals(len(self.connections), 2) |
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self.connect_terminate_count = 4 |
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self.getClient()
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self.getClient()
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self.getClient()
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self.getClient()
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self.mainloop.Run()
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self.assertEquals(len(self.connections), 6) |
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def testBasicMessage(self): |
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self.connect_terminate_count = None |
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client = self.getClient()
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client.send("ciao\3")
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self.mainloop.Run()
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self.assertEquals(len(self.connections), 1) |
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self.assertEquals(len(self.messages[0]), 1) |
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self.assertEquals(self.messages[0][0], "ciao") |
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def testDoubleMessage(self): |
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self.connect_terminate_count = None |
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client = self.getClient()
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client.send("ciao\3")
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self.mainloop.Run()
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client.send("foobar\3")
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self.mainloop.Run()
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self.assertEquals(len(self.connections), 1) |
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self.assertEquals(len(self.messages[0]), 2) |
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self.assertEquals(self.messages[0][1], "foobar") |
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def testComposedMessage(self): |
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self.connect_terminate_count = None |
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self.message_terminate_count = 3 |
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client = self.getClient()
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client.send("one\3composed\3message\3")
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self.mainloop.Run()
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self.assertEquals(len(self.messages[0]), 3) |
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self.assertEquals(self.messages[0], ["one", "composed", "message"]) |
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def testLongTerminator(self): |
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self.terminator = "\0\1\2" |
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self.connect_terminate_count = None |
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self.message_terminate_count = 3 |
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client = self.getClient()
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client.send("one\0\1\2composed\0\1\2message\0\1\2")
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self.mainloop.Run()
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self.assertEquals(len(self.messages[0]), 3) |
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self.assertEquals(self.messages[0], ["one", "composed", "message"]) |
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|
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def testErrorHandling(self): |
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self.connect_terminate_count = None |
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self.message_terminate_count = None |
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client = self.getClient()
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| 426 |
client.send("one\3two\3error\3three\3")
|
| 427 |
self.assertRaises(errors.GenericError, self.mainloop.Run) |
| 428 |
self.assertEquals(self.connections[0].error_count, 1) |
| 429 |
self.assertEquals(self.messages[0], ["one", "two", "error"]) |
| 430 |
client.send("error\3")
|
| 431 |
self.assertRaises(errors.GenericError, self.mainloop.Run) |
| 432 |
self.assertEquals(self.connections[0].error_count, 2) |
| 433 |
self.assertEquals(self.messages[0], ["one", "two", "error", "three", |
| 434 |
"error"])
|
| 435 |
|
| 436 |
def testDoubleClient(self): |
| 437 |
self.connect_terminate_count = None |
| 438 |
self.message_terminate_count = 2 |
| 439 |
client1 = self.getClient()
|
| 440 |
client2 = self.getClient()
|
| 441 |
client1.send("c1m1\3")
|
| 442 |
client2.send("c2m1\3")
|
| 443 |
self.mainloop.Run()
|
| 444 |
self.assertEquals(self.messages[0], ["c1m1"]) |
| 445 |
self.assertEquals(self.messages[1], ["c2m1"]) |
| 446 |
|
| 447 |
def testUnterminatedMessage(self): |
| 448 |
self.connect_terminate_count = None |
| 449 |
self.message_terminate_count = 3 |
| 450 |
client1 = self.getClient()
|
| 451 |
client2 = self.getClient()
|
| 452 |
client1.send("message\3unterminated")
|
| 453 |
client2.send("c2m1\3c2m2\3")
|
| 454 |
self.mainloop.Run()
|
| 455 |
self.assertEquals(self.messages[0], ["message"]) |
| 456 |
self.assertEquals(self.messages[1], ["c2m1", "c2m2"]) |
| 457 |
client1.send("message\3")
|
| 458 |
self.mainloop.Run()
|
| 459 |
self.assertEquals(self.messages[0], ["message", "unterminatedmessage"]) |
| 460 |
|
| 461 |
def testSignaledWhileAccepting(self): |
| 462 |
utils.IgnoreSignals = lambda fn, *args, **kwargs: None |
| 463 |
client1 = self.getClient()
|
| 464 |
self.server.handle_accept()
|
| 465 |
# When interrupted while accepting we don't have a connection, but we
|
| 466 |
# didn't crash either.
|
| 467 |
self.assertEquals(len(self.connections), 0) |
| 468 |
utils.IgnoreSignals = self.saved_utils_ignoresignals
|
| 469 |
self.mainloop.Run()
|
| 470 |
self.assertEquals(len(self.connections), 1) |
| 471 |
|
| 472 |
|
| 473 |
class TestAsyncStreamServerUnixPath(TestAsyncStreamServerTCP): |
| 474 |
"""Test daemon.AsyncStreamServer with a Unix path connection"""
|
| 475 |
|
| 476 |
family = socket.AF_UNIX |
| 477 |
|
| 478 |
def getAddress(self): |
| 479 |
self.tmpdir = tempfile.mkdtemp()
|
| 480 |
return os.path.join(self.tmpdir, "server.sock") |
| 481 |
|
| 482 |
def tearDown(self): |
| 483 |
shutil.rmtree(self.tmpdir)
|
| 484 |
TestAsyncStreamServerTCP.tearDown(self)
|
| 485 |
|
| 486 |
|
| 487 |
class TestAsyncAwaker(testutils.GanetiTestCase): |
| 488 |
"""Test daemon.AsyncAwaker"""
|
| 489 |
|
| 490 |
family = socket.AF_INET |
| 491 |
|
| 492 |
def setUp(self): |
| 493 |
testutils.GanetiTestCase.setUp(self)
|
| 494 |
self.mainloop = daemon.Mainloop()
|
| 495 |
self.awaker = daemon.AsyncAwaker(signal_fn=self.handle_signal) |
| 496 |
self.signal_count = 0 |
| 497 |
self.signal_terminate_count = 1 |
| 498 |
|
| 499 |
def tearDown(self): |
| 500 |
self.awaker.close()
|
| 501 |
|
| 502 |
def handle_signal(self): |
| 503 |
self.signal_count += 1 |
| 504 |
self.signal_terminate_count -= 1 |
| 505 |
if self.signal_terminate_count <= 0: |
| 506 |
os.kill(os.getpid(), signal.SIGTERM) |
| 507 |
|
| 508 |
def testBasicSignaling(self): |
| 509 |
self.awaker.signal()
|
| 510 |
self.mainloop.Run()
|
| 511 |
self.assertEquals(self.signal_count, 1) |
| 512 |
|
| 513 |
def testDoubleSignaling(self): |
| 514 |
self.awaker.signal()
|
| 515 |
self.awaker.signal()
|
| 516 |
self.mainloop.Run()
|
| 517 |
# The second signal is never delivered
|
| 518 |
self.assertEquals(self.signal_count, 1) |
| 519 |
|
| 520 |
def testReallyDoubleSignaling(self): |
| 521 |
self.assert_(self.awaker.readable()) |
| 522 |
self.awaker.signal()
|
| 523 |
# Let's suppose two threads overlap, and both find need_signal True
|
| 524 |
self.awaker.need_signal = True |
| 525 |
self.awaker.signal()
|
| 526 |
self.mainloop.Run()
|
| 527 |
# We still get only one signaling
|
| 528 |
self.assertEquals(self.signal_count, 1) |
| 529 |
|
| 530 |
def testNoSignalFnArgument(self): |
| 531 |
myawaker = daemon.AsyncAwaker() |
| 532 |
self.assertRaises(socket.error, myawaker.handle_read)
|
| 533 |
myawaker.signal() |
| 534 |
myawaker.handle_read() |
| 535 |
self.assertRaises(socket.error, myawaker.handle_read)
|
| 536 |
myawaker.signal() |
| 537 |
myawaker.signal() |
| 538 |
myawaker.handle_read() |
| 539 |
self.assertRaises(socket.error, myawaker.handle_read)
|
| 540 |
myawaker.close() |
| 541 |
|
| 542 |
def testWrongSignalFnArgument(self): |
| 543 |
self.assertRaises(AssertionError, daemon.AsyncAwaker, 1) |
| 544 |
self.assertRaises(AssertionError, daemon.AsyncAwaker, "string") |
| 545 |
self.assertRaises(AssertionError, daemon.AsyncAwaker, signal_fn=1) |
| 546 |
self.assertRaises(AssertionError, daemon.AsyncAwaker, signal_fn="string") |
| 547 |
|
| 548 |
|
| 549 |
if __name__ == "__main__": |
| 550 |
testutils.GanetiTestProgram() |