Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2009, 2011 Google Inc.

#

# 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., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Script for unittesting the mcpu module"""

import unittest

import itertools

from ganeti import mcpu

from ganeti import opcodes

from ganeti import cmdlib

from ganeti import constants

from ganeti.constants import \

    LOCK_ATTEMPTS_TIMEOUT, \

    LOCK_ATTEMPTS_MAXWAIT, \

    LOCK_ATTEMPTS_MINWAIT

import testutils

REQ_BGL_WHITELIST = frozenset([

  opcodes.OpClusterActivateMasterIp,

  opcodes.OpClusterDeactivateMasterIp,

  opcodes.OpClusterDestroy,

  opcodes.OpClusterPostInit,

  opcodes.OpClusterRename,

  opcodes.OpInstanceRename,

  opcodes.OpNodeAdd,

  opcodes.OpNodeRemove,

  opcodes.OpTestAllocator,

  ])

class TestLockAttemptTimeoutStrategy(unittest.TestCase):

  def testConstants(self):

    tpa = mcpu.LockAttemptTimeoutStrategy._TIMEOUT_PER_ATTEMPT

    self.assert_(len(tpa) > LOCK_ATTEMPTS_TIMEOUT / LOCK_ATTEMPTS_MAXWAIT)

    self.assert_(sum(tpa) >= LOCK_ATTEMPTS_TIMEOUT)

    self.assertTrue(LOCK_ATTEMPTS_TIMEOUT >= 1800,

                    msg="Waiting less than half an hour per priority")

    self.assertTrue(LOCK_ATTEMPTS_TIMEOUT <= 3600,

                    msg="Waiting more than an hour per priority")

  def testSimple(self):

    strat = mcpu.LockAttemptTimeoutStrategy(_random_fn=lambda: 0.5,

                                            _time_fn=lambda: 0.0)

    prev = None

    for i in range(len(strat._TIMEOUT_PER_ATTEMPT)):

      timeout = strat.NextAttempt()

      self.assert_(timeout is not None)

      self.assert_(timeout <= LOCK_ATTEMPTS_MAXWAIT)

      self.assert_(timeout >= LOCK_ATTEMPTS_MINWAIT)

      self.assert_(prev is None or timeout >= prev)

      prev = timeout

    for _ in range(10):

      self.assert_(strat.NextAttempt() is None)

class TestDispatchTable(unittest.TestCase):

  def test(self):

    for opcls in opcodes.OP_MAPPING.values():

      if not opcls.WITH_LU:

        continue

      self.assertTrue(opcls in mcpu.Processor.DISPATCH_TABLE,

                      msg="%s missing handler class" % opcls)

      # Check against BGL whitelist

      lucls = mcpu.Processor.DISPATCH_TABLE[opcls]

      if lucls.REQ_BGL:

        self.assertTrue(opcls in REQ_BGL_WHITELIST,

                        msg=("%s not whitelisted for BGL" % opcls.OP_ID))

      else:

        self.assertFalse(opcls in REQ_BGL_WHITELIST,

                         msg=("%s whitelisted for BGL, but doesn't use it" %

                              opcls.OP_ID))

class TestProcessResult(unittest.TestCase):

  def setUp(self):

    self._submitted = []

    self._count = itertools.count(200)

  def _Submit(self, jobs):

    job_ids = [self._count.next() for _ in jobs]

    self._submitted.extend(zip(job_ids, jobs))

    return job_ids

  def testNoJobs(self):

    for i in [object(), [], False, True, None, 1, 929, {}]:

      self.assertEqual(mcpu._ProcessResult(NotImplemented, NotImplemented, i),

                       i)

  def testDefaults(self):

    src = opcodes.OpTestDummy()

    res = mcpu._ProcessResult(self._Submit, src, cmdlib.ResultWithJobs([[

      opcodes.OpTestDelay(),

      opcodes.OpTestDelay(),

      ], [

      opcodes.OpTestDelay(),

      ]]))

    self.assertEqual(res, {

      constants.JOB_IDS_KEY: [200, 201],

      })

    (_, (op1, op2)) = self._submitted.pop(0)

    (_, (op3, )) = self._submitted.pop(0)

    self.assertRaises(IndexError, self._submitted.pop)

    for op in [op1, op2, op3]:

      self.assertTrue("OP_TEST_DUMMY" in op.comment)

      self.assertFalse(hasattr(op, "priority"))

      self.assertFalse(hasattr(op, "debug_level"))

  def testParams(self):

    src = opcodes.OpTestDummy(priority=constants.OP_PRIO_HIGH,

                              debug_level=3)

    res = mcpu._ProcessResult(self._Submit, src, cmdlib.ResultWithJobs([[

      opcodes.OpTestDelay(priority=constants.OP_PRIO_LOW),

      ], [

      opcodes.OpTestDelay(comment="foobar", debug_level=10),

      ]], other=True, value=range(10)))

    self.assertEqual(res, {

      constants.JOB_IDS_KEY: [200, 201],

      "other": True,

      "value": range(10),

      })

    (_, (op1, )) = self._submitted.pop(0)

    (_, (op2, )) = self._submitted.pop(0)

    self.assertRaises(IndexError, self._submitted.pop)

    self.assertEqual(op1.priority, constants.OP_PRIO_LOW)

    self.assertTrue("OP_TEST_DUMMY" in op1.comment)

    self.assertEqual(op1.debug_level, 3)

    self.assertEqual(op2.priority, constants.OP_PRIO_HIGH)

    self.assertEqual(op2.comment, "foobar")

    self.assertEqual(op2.debug_level, 3)

if __name__ == "__main__":

  testutils.GanetiTestProgram()