def _matchAutostackInstances(task):
""" Executed via multiprocessing Pool: Retrieve instances matching an
autostack
:param task: Descriptions of Autostack
:type task: A three-tuple: (autostackID, region, filters,). See
aggregator_instances.getAutostackInstances for description of `filters`
:returns: a sequence of zero or more aggregator_instances.InstanceInfo objects
matching the given task
"""
log = _getInstanceWorkerLogger()
log.debug("_matchAutostackInstances: task=%r", task)
autostackID, region, filters = task
matchStartTime = time.time()
instances = getAutostackInstances(regionName=region, filters=filters)
log.info("Retrieved Autostack instances: autostack=%s; region=%s; "
"filters=%s; numInstances=%d; duration=%ss",
autostackID, region, filters, len(instances),
time.time() - matchStartTime)
return instances
def getMatchingResources(cls, aggSpec):
""" Get the resources that match an aggregation specification.
:param aggSpec: Autostack aggregation specification
:type aggSpec: dict (see _AutostackDatasourceAdapter.createAutostack)
:returns: sequence of matching resources
"""
return getAutostackInstances(regionName=aggSpec["region"],
filters=aggSpec["filters"])