Synnefo » snf-ganeti » ganeti-local

# Copyright (C) 2012, 2014 Google Inc.

from ganeti import constants

import re

import time

import qa_config

import qa_error

from qa_utils import AssertCommand, GetCommandOutput

def _GetJobStatuses():

  """ Invokes gnt-job list and extracts an id to status dictionary.

  @rtype: dict of string to string

  @return: A dictionary mapping job ids to matching statuses

  """

  master = qa_config.GetMasterNode()

  list_output = GetCommandOutput(

    master.primary, "gnt-job list --no-headers --output=id,status"

  )

  return dict(map(lambda s: s.split(), list_output.splitlines()))

def TestJobCancellation():

  """gnt-job cancel"""

  # The delay used for the first command should be large enough for the next

  # command and the cancellation command to complete before the first job is

  # done. The second delay should be small enough that not too much time is

  # spend waiting in the case of a failed cancel and a running command.

  FIRST_COMMAND_DELAY = 10.0

  AssertCommand(["gnt-debug", "delay", "--submit", str(FIRST_COMMAND_DELAY)])

  SECOND_COMMAND_DELAY = 1.0

  master = qa_config.GetMasterNode()

  # Forcing tty usage does not work on buildbot, so force all output of this

  # command to be redirected to stdout

  job_id_output = GetCommandOutput(

    master.primary, "gnt-debug delay --submit %s 2>&1" % SECOND_COMMAND_DELAY

  )

  possible_job_ids = re.findall("JobID: ([0-9]+)", job_id_output)

  if len(possible_job_ids) != 1:

    raise qa_error.Error("Cannot parse gnt-debug delay output to find job id")

  job_id = possible_job_ids[0]

  AssertCommand(["gnt-job", "cancel", job_id])

  # Now wait until the second job finishes, and expect the watch to fail due to

  # job cancellation

  AssertCommand(["gnt-job", "watch", job_id], fail=True)

  # Then check for job cancellation

  status_dict = _GetJobStatuses()

  if status_dict.get(job_id, None) != constants.JOB_STATUS_CANCELED:

    raise qa_error.Error("Job was not successfully cancelled!")