Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2010 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 testing ganeti.jqueue"""

import os

import sys

import unittest

import tempfile

import shutil

import errno

import itertools

from ganeti import constants

from ganeti import utils

from ganeti import errors

from ganeti import jqueue

from ganeti import opcodes

from ganeti import compat

from ganeti import mcpu

import testutils

class _FakeJob:

  def __init__(self, job_id, status):

    self.id = job_id

    self._status = status

    self._log = []

  def SetStatus(self, status):

    self._status = status

  def AddLogEntry(self, msg):

    self._log.append((len(self._log), msg))

  def CalcStatus(self):

    return self._status

  def GetInfo(self, fields):

    result = []

    for name in fields:

      if name == "status":

        result.append(self._status)

      else:

        raise Exception("Unknown field")

    return result

  def GetLogEntries(self, newer_than):

    assert newer_than is None or newer_than >= 0

    if newer_than is None:

      return self._log

    return self._log[newer_than:]

class TestJobChangesChecker(unittest.TestCase):

  def testStatus(self):

    job = _FakeJob(9094, constants.JOB_STATUS_QUEUED)

    checker = jqueue._JobChangesChecker(["status"], None, None)

    self.assertEqual(checker(job), ([constants.JOB_STATUS_QUEUED], []))

    job.SetStatus(constants.JOB_STATUS_RUNNING)

    self.assertEqual(checker(job), ([constants.JOB_STATUS_RUNNING], []))

    job.SetStatus(constants.JOB_STATUS_SUCCESS)

    self.assertEqual(checker(job), ([constants.JOB_STATUS_SUCCESS], []))

    # job.id is used by checker

    self.assertEqual(job.id, 9094)

  def testStatusWithPrev(self):

    job = _FakeJob(12807, constants.JOB_STATUS_QUEUED)

    checker = jqueue._JobChangesChecker(["status"],

                                        [constants.JOB_STATUS_QUEUED], None)

    self.assert_(checker(job) is None)

    job.SetStatus(constants.JOB_STATUS_RUNNING)

    self.assertEqual(checker(job), ([constants.JOB_STATUS_RUNNING], []))

  def testFinalStatus(self):

    for status in constants.JOBS_FINALIZED:

      job = _FakeJob(2178711, status)

      checker = jqueue._JobChangesChecker(["status"], [status], None)

      # There won't be any changes in this status, hence it should signal

      # a change immediately

      self.assertEqual(checker(job), ([status], []))

  def testLog(self):

    job = _FakeJob(9094, constants.JOB_STATUS_RUNNING)

    checker = jqueue._JobChangesChecker(["status"], None, None)

    self.assertEqual(checker(job), ([constants.JOB_STATUS_RUNNING], []))

    job.AddLogEntry("Hello World")

    (job_info, log_entries) = checker(job)

    self.assertEqual(job_info, [constants.JOB_STATUS_RUNNING])

    self.assertEqual(log_entries, [[0, "Hello World"]])

    checker2 = jqueue._JobChangesChecker(["status"], job_info, len(log_entries))

    self.assert_(checker2(job) is None)

    job.AddLogEntry("Foo Bar")

    job.SetStatus(constants.JOB_STATUS_ERROR)

    (job_info, log_entries) = checker2(job)

    self.assertEqual(job_info, [constants.JOB_STATUS_ERROR])

    self.assertEqual(log_entries, [[1, "Foo Bar"]])

    checker3 = jqueue._JobChangesChecker(["status"], None, None)

    (job_info, log_entries) = checker3(job)

    self.assertEqual(job_info, [constants.JOB_STATUS_ERROR])

    self.assertEqual(log_entries, [[0, "Hello World"], [1, "Foo Bar"]])

class TestJobChangesWaiter(unittest.TestCase):

  def setUp(self):

    self.tmpdir = tempfile.mkdtemp()

    self.filename = utils.PathJoin(self.tmpdir, "job-1")

    utils.WriteFile(self.filename, data="")

  def tearDown(self):

    shutil.rmtree(self.tmpdir)

  def _EnsureNotifierClosed(self, notifier):

    try:

      os.fstat(notifier._fd)

    except EnvironmentError, err:

      self.assertEqual(err.errno, errno.EBADF)

    else:

      self.fail("File descriptor wasn't closed")

  def testClose(self):

    for wait in [False, True]:

      waiter = jqueue._JobFileChangesWaiter(self.filename)

      try:

        if wait:

          waiter.Wait(0.001)

      finally:

        waiter.Close()

      # Ensure file descriptor was closed

      self._EnsureNotifierClosed(waiter._notifier)

  def testChangingFile(self):

    waiter = jqueue._JobFileChangesWaiter(self.filename)

    try:

      self.assertFalse(waiter.Wait(0.1))

      utils.WriteFile(self.filename, data="changed")

      self.assert_(waiter.Wait(60))

    finally:

      waiter.Close()

    self._EnsureNotifierClosed(waiter._notifier)

  def testChangingFile2(self):

    waiter = jqueue._JobChangesWaiter(self.filename)

    try:

      self.assertFalse(waiter._filewaiter)

      self.assert_(waiter.Wait(0.1))

      self.assert_(waiter._filewaiter)

      # File waiter is now used, but there have been no changes

      self.assertFalse(waiter.Wait(0.1))

      utils.WriteFile(self.filename, data="changed")

      self.assert_(waiter.Wait(60))

    finally:

      waiter.Close()

    self._EnsureNotifierClosed(waiter._filewaiter._notifier)

class TestWaitForJobChangesHelper(unittest.TestCase):

  def setUp(self):

    self.tmpdir = tempfile.mkdtemp()

    self.filename = utils.PathJoin(self.tmpdir, "job-2614226563")

    utils.WriteFile(self.filename, data="")

  def tearDown(self):

    shutil.rmtree(self.tmpdir)

  def _LoadWaitingJob(self):

    return _FakeJob(2614226563, constants.JOB_STATUS_WAITLOCK)

  def _LoadLostJob(self):

    return None

  def testNoChanges(self):

    wfjc = jqueue._WaitForJobChangesHelper()

    # No change

    self.assertEqual(wfjc(self.filename, self._LoadWaitingJob, ["status"],

                          [constants.JOB_STATUS_WAITLOCK], None, 0.1),

                     constants.JOB_NOTCHANGED)

    # No previous information

    self.assertEqual(wfjc(self.filename, self._LoadWaitingJob,

                          ["status"], None, None, 1.0),

                     ([constants.JOB_STATUS_WAITLOCK], []))

  def testLostJob(self):

    wfjc = jqueue._WaitForJobChangesHelper()

    self.assert_(wfjc(self.filename, self._LoadLostJob,

                      ["status"], None, None, 1.0) is None)

class TestEncodeOpError(unittest.TestCase):

  def test(self):

    encerr = jqueue._EncodeOpError(errors.LockError("Test 1"))

    self.assert_(isinstance(encerr, tuple))

    self.assertRaises(errors.LockError, errors.MaybeRaise, encerr)

    encerr = jqueue._EncodeOpError(errors.GenericError("Test 2"))

    self.assert_(isinstance(encerr, tuple))

    self.assertRaises(errors.GenericError, errors.MaybeRaise, encerr)

    encerr = jqueue._EncodeOpError(NotImplementedError("Foo"))

    self.assert_(isinstance(encerr, tuple))

    self.assertRaises(errors.OpExecError, errors.MaybeRaise, encerr)

    encerr = jqueue._EncodeOpError("Hello World")

    self.assert_(isinstance(encerr, tuple))

    self.assertRaises(errors.OpExecError, errors.MaybeRaise, encerr)

class TestQueuedOpCode(unittest.TestCase):

  def testDefaults(self):

    def _Check(op):

      self.assertFalse(hasattr(op.input, "dry_run"))

      self.assertEqual(op.priority, constants.OP_PRIO_DEFAULT)

      self.assertFalse(op.log)

      self.assert_(op.start_timestamp is None)

      self.assert_(op.exec_timestamp is None)

      self.assert_(op.end_timestamp is None)

      self.assert_(op.result is None)

      self.assertEqual(op.status, constants.OP_STATUS_QUEUED)

    op1 = jqueue._QueuedOpCode(opcodes.OpTestDelay())

    _Check(op1)

    op2 = jqueue._QueuedOpCode.Restore(op1.Serialize())

    _Check(op2)

    self.assertEqual(op1.Serialize(), op2.Serialize())

  def testPriority(self):

    def _Check(op):

      assert constants.OP_PRIO_DEFAULT != constants.OP_PRIO_HIGH, \

             "Default priority equals high priority; test can't work"

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

      self.assertEqual(op.status, constants.OP_STATUS_QUEUED)

    inpop = opcodes.OpGetTags(priority=constants.OP_PRIO_HIGH)

    op1 = jqueue._QueuedOpCode(inpop)

    _Check(op1)

    op2 = jqueue._QueuedOpCode.Restore(op1.Serialize())

    _Check(op2)

    self.assertEqual(op1.Serialize(), op2.Serialize())

class TestQueuedJob(unittest.TestCase):

  def test(self):

    self.assertRaises(errors.GenericError, jqueue._QueuedJob,

                      None, 1, [])

  def testDefaults(self):

    job_id = 4260

    ops = [

      opcodes.OpGetTags(),

      opcodes.OpTestDelay(),

      ]

    def _Check(job):

      self.assertEqual(job.id, job_id)

      self.assertEqual(job.log_serial, 0)

      self.assert_(job.received_timestamp)

      self.assert_(job.start_timestamp is None)

      self.assert_(job.end_timestamp is None)

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

      self.assertEqual(job.CalcPriority(), constants.OP_PRIO_DEFAULT)

      self.assert_(repr(job).startswith("<"))

      self.assertEqual(len(job.ops), len(ops))

      self.assert_(compat.all(inp.__getstate__() == op.input.__getstate__()

                              for (inp, op) in zip(ops, job.ops)))

      self.assertRaises(errors.OpExecError, job.GetInfo,

                        ["unknown-field"])

      self.assertEqual(job.GetInfo(["summary"]),

                       [[op.input.Summary() for op in job.ops]])

    job1 = jqueue._QueuedJob(None, job_id, ops)

    _Check(job1)

    job2 = jqueue._QueuedJob.Restore(None, job1.Serialize())

    _Check(job2)

    self.assertEqual(job1.Serialize(), job2.Serialize())

  def testPriority(self):

    job_id = 4283

    ops = [

      opcodes.OpGetTags(priority=constants.OP_PRIO_DEFAULT),

      opcodes.OpTestDelay(),

      ]

    def _Check(job):

      self.assertEqual(job.id, job_id)

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

      self.assert_(repr(job).startswith("<"))

    job = jqueue._QueuedJob(None, job_id, ops)

    _Check(job)

    self.assert_(compat.all(op.priority == constants.OP_PRIO_DEFAULT

                            for op in job.ops))

    self.assertEqual(job.CalcPriority(), constants.OP_PRIO_DEFAULT)

    # Increase first

    job.ops[0].priority -= 1

    _Check(job)

    self.assertEqual(job.CalcPriority(), constants.OP_PRIO_DEFAULT - 1)

    # Mark opcode as finished

    job.ops[0].status = constants.OP_STATUS_SUCCESS

    _Check(job)

    self.assertEqual(job.CalcPriority(), constants.OP_PRIO_DEFAULT)

    # Increase second

    job.ops[1].priority -= 10

    self.assertEqual(job.CalcPriority(), constants.OP_PRIO_DEFAULT - 10)

    # Test increasing first

    job.ops[0].status = constants.OP_STATUS_RUNNING

    job.ops[0].priority -= 19

    self.assertEqual(job.CalcPriority(), constants.OP_PRIO_DEFAULT - 20)

  def testCalcStatus(self):

    def _Queued(ops):

      # The default status is "queued"

      self.assert_(compat.all(op.status == constants.OP_STATUS_QUEUED

                              for op in ops))

    def _Waitlock1(ops):

      ops[0].status = constants.OP_STATUS_WAITLOCK

    def _Waitlock2(ops):

      ops[0].status = constants.OP_STATUS_SUCCESS

      ops[1].status = constants.OP_STATUS_SUCCESS

      ops[2].status = constants.OP_STATUS_WAITLOCK

    def _Running(ops):

      ops[0].status = constants.OP_STATUS_SUCCESS

      ops[1].status = constants.OP_STATUS_RUNNING

      for op in ops[2:]:

        op.status = constants.OP_STATUS_QUEUED

    def _Canceling1(ops):

      ops[0].status = constants.OP_STATUS_SUCCESS

      ops[1].status = constants.OP_STATUS_SUCCESS

      for op in ops[2:]:

        op.status = constants.OP_STATUS_CANCELING

    def _Canceling2(ops):

      for op in ops:

        op.status = constants.OP_STATUS_CANCELING

    def _Canceled(ops):

      for op in ops:

        op.status = constants.OP_STATUS_CANCELED

    def _Error1(ops):

      for idx, op in enumerate(ops):

        if idx > 3:

          op.status = constants.OP_STATUS_ERROR

        else:

          op.status = constants.OP_STATUS_SUCCESS

    def _Error2(ops):

      for op in ops:

        op.status = constants.OP_STATUS_ERROR

    def _Success(ops):

      for op in ops:

        op.status = constants.OP_STATUS_SUCCESS

    tests = {

      constants.JOB_STATUS_QUEUED: [_Queued],

      constants.JOB_STATUS_WAITLOCK: [_Waitlock1, _Waitlock2],

      constants.JOB_STATUS_RUNNING: [_Running],

      constants.JOB_STATUS_CANCELING: [_Canceling1, _Canceling2],

      constants.JOB_STATUS_CANCELED: [_Canceled],

      constants.JOB_STATUS_ERROR: [_Error1, _Error2],

      constants.JOB_STATUS_SUCCESS: [_Success],

      }

    def _NewJob():

      job = jqueue._QueuedJob(None, 1,

                              [opcodes.OpTestDelay() for _ in range(10)])

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

      self.assert_(compat.all(op.status == constants.OP_STATUS_QUEUED

                              for op in job.ops))

      return job

    for status in constants.JOB_STATUS_ALL:

      sttests = tests[status]

      assert sttests

      for fn in sttests:

        job = _NewJob()

        fn(job.ops)

        self.assertEqual(job.CalcStatus(), status)

class _FakeQueueForProc:

  def __init__(self):

    self._acquired = False

  def IsAcquired(self):

    return self._acquired

  def acquire(self, shared=0):

    assert shared == 1

    self._acquired = True

  def release(self):

    assert self._acquired

    self._acquired = False

  def UpdateJobUnlocked(self, job, replicate=None):

    # TODO: Ensure job is updated at the correct places

    pass

class _FakeExecOpCodeForProc:

  def __init__(self, before_start, after_start):

    self._before_start = before_start

    self._after_start = after_start

  def __call__(self, op, cbs, timeout=None):

    assert isinstance(op, opcodes.OpTestDummy)

    if self._before_start:

      self._before_start(timeout)

    cbs.NotifyStart()

    if self._after_start:

      self._after_start(op, cbs)

    if op.fail:

      raise errors.OpExecError("Error requested (%s)" % op.result)

    return op.result

class _JobProcessorTestUtils:

  def _CreateJob(self, queue, job_id, ops):

    job = jqueue._QueuedJob(queue, job_id, ops)

    self.assertFalse(job.start_timestamp)

    self.assertFalse(job.end_timestamp)

    self.assertEqual(len(ops), len(job.ops))

    self.assert_(compat.all(op.input == inp

                            for (op, inp) in zip(job.ops, ops)))

    self.assertEqual(job.GetInfo(["ops"]), [[op.__getstate__() for op in ops]])

    return job

class TestJobProcessor(unittest.TestCase, _JobProcessorTestUtils):

  def _GenericCheckJob(self, job):

    assert compat.all(isinstance(op.input, opcodes.OpTestDummy)

                      for op in job.ops)

    self.assertEqual(job.GetInfo(["opstart", "opexec", "opend"]),

                     [[op.start_timestamp for op in job.ops],

                      [op.exec_timestamp for op in job.ops],

                      [op.end_timestamp for op in job.ops]])

    self.assertEqual(job.GetInfo(["received_ts", "start_ts", "end_ts"]),

                     [job.received_timestamp,

                      job.start_timestamp,

                      job.end_timestamp])

    self.assert_(job.start_timestamp)

    self.assert_(job.end_timestamp)

    self.assertEqual(job.start_timestamp, job.ops[0].start_timestamp)

  def testSuccess(self):

    queue = _FakeQueueForProc()

    for (job_id, opcount) in [(25351, 1), (6637, 3),

                              (24644, 10), (32207, 100)]:

      ops = [opcodes.OpTestDummy(result="Res%s" % i, fail=False)

             for i in range(opcount)]

      # Create job

      job = self._CreateJob(queue, job_id, ops)

      def _BeforeStart(_):

        self.assertFalse(queue.IsAcquired())

        self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_WAITLOCK)

      def _AfterStart(op, cbs):

        self.assertFalse(queue.IsAcquired())

        self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_RUNNING)

        # Job is running, cancelling shouldn't be possible

        (success, _) = job.Cancel()

        self.assertFalse(success)

      opexec = _FakeExecOpCodeForProc(_BeforeStart, _AfterStart)

      for idx in range(len(ops)):

        result = jqueue._JobProcessor(queue, opexec, job)()

        if idx == len(ops) - 1:

          # Last opcode

          self.assert_(result)

        else:

          self.assertFalse(result)

          self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

          self.assert_(job.start_timestamp)

          self.assertFalse(job.end_timestamp)

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_SUCCESS)

      self.assertEqual(job.GetInfo(["status"]), [constants.JOB_STATUS_SUCCESS])

      self.assertEqual(job.GetInfo(["opresult"]),

                       [[op.input.result for op in job.ops]])

      self.assertEqual(job.GetInfo(["opstatus"]),

                       [len(job.ops) * [constants.OP_STATUS_SUCCESS]])

      self.assert_(compat.all(op.start_timestamp and op.end_timestamp

                              for op in job.ops))

      self._GenericCheckJob(job)

      # Finished jobs can't be processed any further

      self.assertRaises(errors.ProgrammerError,

                        jqueue._JobProcessor(queue, opexec, job))

  def testOpcodeError(self):

    queue = _FakeQueueForProc()

    testdata = [

      (17077, 1, 0, 0),

      (1782, 5, 2, 2),

      (18179, 10, 9, 9),

      (4744, 10, 3, 8),

      (23816, 100, 39, 45),

      ]

    for (job_id, opcount, failfrom, failto) in testdata:

      # Prepare opcodes

      ops = [opcodes.OpTestDummy(result="Res%s" % i,

                                 fail=(failfrom <= i and

                                       i <= failto))

             for i in range(opcount)]

      # Create job

      job = self._CreateJob(queue, job_id, ops)

      opexec = _FakeExecOpCodeForProc(None, None)

      for idx in range(len(ops)):

        result = jqueue._JobProcessor(queue, opexec, job)()

        if idx in (failfrom, len(ops) - 1):

          # Last opcode

          self.assert_(result)

          break

        self.assertFalse(result)

        self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

      # Check job status

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_ERROR)

      self.assertEqual(job.GetInfo(["id"]), [job_id])

      self.assertEqual(job.GetInfo(["status"]), [constants.JOB_STATUS_ERROR])

      # Check opcode status

      data = zip(job.ops,

                 job.GetInfo(["opstatus"])[0],

                 job.GetInfo(["opresult"])[0])

      for idx, (op, opstatus, opresult) in enumerate(data):

        if idx < failfrom:

          assert not op.input.fail

          self.assertEqual(opstatus, constants.OP_STATUS_SUCCESS)

          self.assertEqual(opresult, op.input.result)

        elif idx <= failto:

          assert op.input.fail

          self.assertEqual(opstatus, constants.OP_STATUS_ERROR)

          self.assertRaises(errors.OpExecError, errors.MaybeRaise, opresult)

        else:

          assert not op.input.fail

          self.assertEqual(opstatus, constants.OP_STATUS_ERROR)

          self.assertRaises(errors.OpExecError, errors.MaybeRaise, opresult)

      self.assert_(compat.all(op.start_timestamp and op.end_timestamp

                              for op in job.ops[:failfrom]))

      self._GenericCheckJob(job)

      # Finished jobs can't be processed any further

      self.assertRaises(errors.ProgrammerError,

                        jqueue._JobProcessor(queue, opexec, job))

  def testCancelWhileInQueue(self):

    queue = _FakeQueueForProc()

    ops = [opcodes.OpTestDummy(result="Res%s" % i, fail=False)

           for i in range(5)]

    # Create job

    job_id = 17045

    job = self._CreateJob(queue, job_id, ops)

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

    # Mark as cancelled

    (success, _) = job.Cancel()

    self.assert_(success)

    self.assert_(compat.all(op.status == constants.OP_STATUS_CANCELED

                            for op in job.ops))

    opexec = _FakeExecOpCodeForProc(None, None)

    jqueue._JobProcessor(queue, opexec, job)()

    # Check result

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_CANCELED)

    self.assertEqual(job.GetInfo(["status"]), [constants.JOB_STATUS_CANCELED])

    self.assertFalse(job.start_timestamp)

    self.assert_(job.end_timestamp)

    self.assertFalse(compat.any(op.start_timestamp or op.end_timestamp

                                for op in job.ops))

    self.assertEqual(job.GetInfo(["opstatus", "opresult"]),

                     [[constants.OP_STATUS_CANCELED for _ in job.ops],

                      ["Job canceled by request" for _ in job.ops]])

  def testCancelWhileWaitlock(self):

    queue = _FakeQueueForProc()

    ops = [opcodes.OpTestDummy(result="Res%s" % i, fail=False)

           for i in range(5)]

    # Create job

    job_id = 11009

    job = self._CreateJob(queue, job_id, ops)

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

    def _BeforeStart(_):

      self.assertFalse(queue.IsAcquired())

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_WAITLOCK)

      # Mark as cancelled

      (success, _) = job.Cancel()

      self.assert_(success)

      self.assert_(compat.all(op.status == constants.OP_STATUS_CANCELING

                              for op in job.ops))

    def _AfterStart(op, cbs):

      self.assertFalse(queue.IsAcquired())

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_RUNNING)

    opexec = _FakeExecOpCodeForProc(_BeforeStart, _AfterStart)

    jqueue._JobProcessor(queue, opexec, job)()

    # Check result

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_CANCELED)

    self.assertEqual(job.GetInfo(["status"]), [constants.JOB_STATUS_CANCELED])

    self.assert_(job.start_timestamp)

    self.assert_(job.end_timestamp)

    self.assertFalse(compat.all(op.start_timestamp and op.end_timestamp

                                for op in job.ops))

    self.assertEqual(job.GetInfo(["opstatus", "opresult"]),

                     [[constants.OP_STATUS_CANCELED for _ in job.ops],

                      ["Job canceled by request" for _ in job.ops]])

  def testCancelWhileRunning(self):

    # Tests canceling a job with finished opcodes and more, unprocessed ones

    queue = _FakeQueueForProc()

    ops = [opcodes.OpTestDummy(result="Res%s" % i, fail=False)

           for i in range(3)]

    # Create job

    job_id = 28492

    job = self._CreateJob(queue, job_id, ops)

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

    opexec = _FakeExecOpCodeForProc(None, None)

    # Run one opcode

    self.assertFalse(jqueue._JobProcessor(queue, opexec, job)())

    # Job goes back to queued

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

    self.assertEqual(job.GetInfo(["opstatus", "opresult"]),

                     [[constants.OP_STATUS_SUCCESS,

                       constants.OP_STATUS_QUEUED,

                       constants.OP_STATUS_QUEUED],

                      ["Res0", None, None]])

    # Mark as cancelled

    (success, _) = job.Cancel()

    self.assert_(success)

    # Try processing another opcode (this will actually cancel the job)

    self.assert_(jqueue._JobProcessor(queue, opexec, job)())

    # Check result

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_CANCELED)

    self.assertEqual(job.GetInfo(["id"]), [job_id])

    self.assertEqual(job.GetInfo(["status"]), [constants.JOB_STATUS_CANCELED])

    self.assertEqual(job.GetInfo(["opstatus", "opresult"]),

                     [[constants.OP_STATUS_SUCCESS,

                       constants.OP_STATUS_CANCELED,

                       constants.OP_STATUS_CANCELED],

                      ["Res0", "Job canceled by request",

                       "Job canceled by request"]])

  def testPartiallyRun(self):

    # Tests calling the processor on a job that's been partially run before the

    # program was restarted

    queue = _FakeQueueForProc()

    opexec = _FakeExecOpCodeForProc(None, None)

    for job_id, successcount in [(30697, 1), (2552, 4), (12489, 9)]:

      ops = [opcodes.OpTestDummy(result="Res%s" % i, fail=False)

             for i in range(10)]

      # Create job

      job = self._CreateJob(queue, job_id, ops)

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

      for _ in range(successcount):

        self.assertFalse(jqueue._JobProcessor(queue, opexec, job)())

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

      self.assertEqual(job.GetInfo(["opstatus"]),

                       [[constants.OP_STATUS_SUCCESS

                         for _ in range(successcount)] +

                        [constants.OP_STATUS_QUEUED

                         for _ in range(len(ops) - successcount)]])

      self.assert_(job.ops_iter)

      # Serialize and restore (simulates program restart)

      newjob = jqueue._QueuedJob.Restore(queue, job.Serialize())

      self.assertFalse(newjob.ops_iter)

      self._TestPartial(newjob, successcount)

  def _TestPartial(self, job, successcount):

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

    self.assertEqual(job.start_timestamp, job.ops[0].start_timestamp)

    queue = _FakeQueueForProc()

    opexec = _FakeExecOpCodeForProc(None, None)

    for remaining in reversed(range(len(job.ops) - successcount)):

      result = jqueue._JobProcessor(queue, opexec, job)()

      if remaining == 0:

        # Last opcode

        self.assert_(result)

        break

      self.assertFalse(result)

      self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_QUEUED)

    self.assertEqual(job.CalcStatus(), constants.JOB_STATUS_SUCCESS)

    self.assertEqual(job.GetInfo(["status"]), [constants.JOB_STATUS_SUCCESS])

    self.assertEqual(job.GetInfo(["opresult"]),

                     [[op.input.result for op in job.ops]])

    self.assertEqual(job.GetInfo(["opstatus"]),

                     [[constants.OP_STATUS_SUCCESS for _ in job.ops]])

    self.assert_(compat.all(op.start_timestamp and op.end_timestamp

                            for op in job.ops))

    self._GenericCheckJob(job)

    # Finished jobs can't be processed any further

    self.assertRaises(errors.ProgrammerError,

                      jqueue._JobProcessor(queue, opexec, job))

    # ... also after being restored

    job2 = jqueue._QueuedJob.Restore(queue, job.Serialize())

    self.assertRaises(errors.ProgrammerError,

                      jqueue._JobProcessor(queue, opexec, job2))

  def testProcessorOnRunningJob(self):

    ops = [opcodes.OpTestDummy(result="result", fail=False)]