class WorkerTests(ToilTest):
"""Test miscellaneous units of the worker."""
def setUp(self):
super(WorkerTests, self).setUp()
path = self._getTestJobStorePath()
self.jobStore = FileJobStore(path)
self.config = Config()
self.config.jobStore = 'file:%s' % path
self.jobStore.initialize(self.config)
self.jobGraphNumber = 0
def testNextChainableJobGraph(self):
"""Make sure chainable/non-chainable jobs are identified correctly."""
def createJobGraph(memory, cores, disk, preemptable, checkpoint):
"""Create a fake-ish Job and JobGraph pair, and return the
jobGraph."""
name = 'jobGraph%d' % self.jobGraphNumber
self.jobGraphNumber += 1
job = Job()
job.checkpoint = checkpoint
with self.jobStore.writeFileStream() as (f, fileStoreID):
pickle.dump(job, f, pickle.HIGHEST_PROTOCOL)
command = '_toil %s fooCommand toil True' % fileStoreID
jobGraph = JobGraph(command=command,
memory=memory,
cores=cores,
disk=disk,
unitName=name,
jobName=name,
preemptable=preemptable,
jobStoreID=name,
remainingRetryCount=1,
predecessorNumber=1)
return self.jobStore.create(jobGraph)
# Identical non-checkpoint jobs should be chainable.
jobGraph1 = createJobGraph(1, 2, 3, True, False)
jobGraph2 = createJobGraph(1, 2, 3, True, False)
jobGraph1.stack = [[jobGraph2]]
self.assertEquals(jobGraph2,
nextChainableJobGraph(jobGraph1, self.jobStore))
# Identical checkpoint jobs should not be chainable.
jobGraph1 = createJobGraph(1, 2, 3, True, False)
jobGraph2 = createJobGraph(1, 2, 3, True, True)
jobGraph1.stack = [[jobGraph2]]
self.assertEquals(None, nextChainableJobGraph(jobGraph1,
self.jobStore))
# If there is no child we should get nothing to chain.
jobGraph1 = createJobGraph(1, 2, 3, True, False)
jobGraph1.stack = []
self.assertEquals(None, nextChainableJobGraph(jobGraph1,
self.jobStore))
# If there are 2 or more children we should get nothing to chain.
jobGraph1 = createJobGraph(1, 2, 3, True, False)
jobGraph2 = createJobGraph(1, 2, 3, True, False)
jobGraph3 = createJobGraph(1, 2, 3, True, False)
jobGraph1.stack = [[jobGraph2, jobGraph3]]
self.assertEquals(None, nextChainableJobGraph(jobGraph1,
self.jobStore))
# If there is an increase in resource requirements we should get nothing to chain.
reqs = {
'memory': 1,
'cores': 2,
'disk': 3,
'preemptable': True,
'checkpoint': False
}
for increased_attribute in ('memory', 'cores', 'disk'):
jobGraph1 = createJobGraph(**reqs)
reqs[increased_attribute] += 1
jobGraph2 = createJobGraph(**reqs)
jobGraph1.stack = [[jobGraph2]]
self.assertEquals(None,
nextChainableJobGraph(jobGraph1, self.jobStore))
# A change in preemptability from True to False should be disallowed.
jobGraph1 = createJobGraph(1, 2, 3, True, False)
jobGraph2 = createJobGraph(1, 2, 3, False, True)
jobGraph1.stack = [[jobGraph2]]
self.assertEquals(None, nextChainableJobGraph(jobGraph1,
self.jobStore))
