def fetch_nodearray_definitions(self):
'''
A wrapper around the autoscale library function to parse Configuration.autoscale.* chef attributes and add
the 'ungrouped' attribute to the machine types.
See cyclecloud.nodearrays.NodearrayDefinitions for more info.
'''
nodearray_definitions = machine.fetch_nodearray_definitions(
self.clusters_api, self.default_placement_attrs)
nodearray_definitions.placement_group_optional = True
for machinetype in nodearray_definitions:
# ensure that any custom attribute the user specified, like disk = 100G, gets parsed correctly
for key, value in machinetype.iteritems():
try:
machinetype[key] = pbscc.parse_gb_size(key, value)
except InvalidSizeExpressionError:
pass
# kludge: there is a strange bug where ungrouped is showing up as a string and not a boolean.
if not machinetype.get("group_id"):
machinetype["ungrouped"] = "true"
else:
machinetype["ungrouped"] = "false"
machinetype["group_id"] = str(
autoscale_util.uuid("ungrouped-"))
return nodearray_definitions
def process_pbsnode(self, pbsnode, instance_ids_to_shutdown, nodearray_definitions):
'''
If the pbsnode is offline, will handle evaluating whether the node can be shutdown. See instance_ids_to_shutdown, which
is an OUT parameter here.
Otherwise convert the pbsnode into a cyclecloud.machine.Machine instance.
'''
states = set(pbsnode["state"].split(","))
resources = pbsnode["resources_available"]
# host has incorrect case
hostname = resources["vnode"]
instance_id = resources.get("instance_id", autoscale_util.uuid("instanceid"))
def try_shutdown_pbsnode():
if not instance_id:
pbscc.error("instance_id was not defined for host %s, can not shut it down" % hostname)
elif "down" in states:
# don't immediately remove down nodes, give them time to recover from network failure.
remove_down_nodes = float(self.cc_config.get("pbspro.remove_down_nodes", 300))
since_down = self.clock.time() - pbsnode["last_state_change_time"]
if since_down > remove_down_nodes:
pbscc.error("Removing down node %s after %.0f seconds", hostname, since_down)
instance_ids_to_shutdown[instance_id] = hostname
return True
else:
omega = remove_down_nodes - since_down
pbscc.warn("Not removing down node %s for another %.0f seconds", hostname, omega)
else:
instance_ids_to_shutdown[instance_id] = hostname
return True
return False
if "offline" in states:
if not pbsnode.get("jobs", []):
pbscc.fine("%s is offline and has no jobs, may be able to shut down" % hostname)
if try_shutdown_pbsnode():
return
else:
pbscc.fine("Host %s is offline but still running jobs" % hostname)
# if the node is just in the down state, try to shut it down.
if set(["down"]) == states and try_shutdown_pbsnode():
return
# just ignore complex down nodes (down,job-busy etc) until PBS decides to change the state.
if "down" in states:
return
# convert relevant resources from bytes to floating point (GB)
for key in resources:
value = resources[key]
if isinstance(value, basestring) and value.lower() in ["true", "false"]:
value = value.lower() == "true"
elif isinstance(value, list):
# TODO will need to support this eventually
continue
else:
try:
resources[key] = pbscc.parse_gb_size(key, resources[key])
except InvalidSizeExpressionError:
pass
resources["hostname"] = hostname
nodearray_name = resources.get("nodearray") or resources.get("slot_type")
group_id = resources.get("group_id")
if resources.get("machinetype") and nodearray_name:
machinetype = nodearray_definitions.get_machinetype(nodearray_name, resources.get("machinetype"), group_id)
else:
# rely solely on resources_available
pbscc.debug("machinetype is not defined for host %s, relying only on resources_available" % hostname)
machinetype = {"availableCount": 1, "name": "undefined"}
inst = machine.new_machine_instance(machinetype, **pbsnode["resources_available"])
return inst
