def __init__(self, res_id):
DataStoreObject.__init__(self)
self._id = Id.parse_id(res_id)
self._entity_type = self._id.entity_type
self._agent_name = self._id.agent_name
self._attribute_name = self._id.attribute
self._attribute_value = self._id.attribute_value
def facts(self, resource_id, timeout = 10, wait = True):
"""
Get facts about a resource
"""
id_obj = Id.parse_id(resource_id)
request = {"id" : resource_id}
topic = 'resources.%s.%s' % (id_obj.agent_name, id_obj.entity_type)
self._mq_send(topic, "FACTS", request)
self._stack["facts"] = None
if wait:
stop = time.time() + timeout
while self._stack["facts"] is None and stop > time.time():
time.sleep(0.1)
return self._stack["facts"]
return None
def status(self, resource_id, timeout = 10):
"""
Check the state of a resource
"""
self._report("Requesting status of %s" % resource_id)
id_obj = Id.parse_id(resource_id)
request = {"id" : resource_id}
topic = 'resources.%s.%s' % (id_obj.agent_name, id_obj.entity_type)
self._mq_send(topic, "STATUS", request)
self._stack["status"] = None
stop = time.time() + timeout
while self._stack["status"] is None and stop > time.time():
time.sleep(0.1)
return self._stack["status"]
def poll_facts(self, resource_id):
"""
Send out a request to receive facts
"""
if resource_id in self._fact_poll and (self._fact_poll[resource_id] + 60) > time.time():
return
res_id = Id.parse_id(resource_id)
# fetch the last deployed resource
resource = DataStore.instance().get(Resource, resource_id)
if resource is None:
return
versions = [v.version for v in resource.versions]
sorted(versions)
version = versions[-1]
data = {}
for v in resource.versions:
if version == v.version:
data = v.data
break
request = {"id" : resource_id, "resource": data, "operation" : "FACTS"}
topic = 'resources.%s.%s' % (res_id.agent_name, res_id.entity_type)
msg = amqp.Message(json.dumps(request))
msg.content_type = "application/json"
msg.relpy_to = self._stomp._queue_name
self._stomp._channel.basic_publish(msg, exchange = self._stomp._exchange_name,
routing_key = topic)
self._fact_poll[resource_id] = time.time()
def on_message(self, msg):
"""
Receive a new file
"""
message = json.loads(msg.body)
if "operation" in message:
operation = message["operation"]
else:
return
if operation == "FACTS_REPLY":
if "code" in message and message["code"] != 200:
self._logger.error("Received a 404 message on a facts reply. " + str(message))
return
if "facts" in message:
facts = message['facts']
for subject,facts in message['facts'].items():
self._logger.info("Received facts from %s" % subject)
for fact in facts:
value = facts[fact]
if not isinstance(value, str):
value = json.dumps(value)
fact_obj = Fact()
fact_obj.value_time = time.time()
fact_obj.resource_id = Id.parse_id(subject)
fact_obj.name = fact
fact_obj.value = value
fact_obj.entity_type = fact_obj.resource_id.entity_type
fact_obj.save()
else:
self._logger.error("No facts in message: " + str(message))
elif operation == "PONG":
if "hostname" not in message:
self._logger.error("Invalid PONG heartbeat received")
return
for host in message["hostname"]:
h = Agent(host)
h.save()
elif operation == "UPDATED":
if "id" not in message or "version" not in message:
self._logger.error("Invalid UPDATED operation")
return
version = DataStore.instance().get(Version, message['id'])
if version is not None:
version.mark_updated()
version.save()
elif operation == "UPDATE":
# ignore
pass
elif operation == "FACTS":
pass
else:
self._logger.debug("Received message with unknown operation. operation = %s" % str(operation))
def _handle_op(self, operation, message):
"""
Handle an operation
"""
if operation == "PING":
LOGGER.info("Got ping request, sending pong back")
response = {"hostname" : self._hostnames }
self._mq_send("control", "PONG", response)
elif operation == "UPDATE":
LOGGER.debug("Received update for %s", message["resource"]["id"])
resource = Resource.deserialize(message["resource"])
self.update(resource)
elif operation == "UPDATED":
rid = Id.parse_id(message["id"])
version = message["version"]
reload = message["reload"]
self._dm.resource_update(rid.resource_str(), version, reload)
elif operation == "STATUS":
resource = Id.parse_id(message["id"]).get_instance()
if resource is None:
self._mq_send("control", "STATUS_REPLY", {"code" : 404})
return
try:
provider = Commander.get_provider(self, resource.id)
except Exception:
LOGGER.exception("Unable to find a handler for %s" % resource)
try:
result = provider.check_resource(resource)
self._mq_send("control", "STATUS_REPLY", result)
except Exception:
LOGGER.exception("Unable to check status of %s" % resource)
self._mq_send("control", "STATUS_REPLY", {"code" : 404})
elif operation == "FACTS":
resource_id = Id.parse_id(message["id"])
try:
resource = Resource.deserialize(message["resource"])
provider = Commander.get_provider(self, resource_id)
try:
result = provider.facts(resource)
response = {"operation" : "FACTS_REPLY", "subject" : str(resource_id), "facts" : result}
self._mq_send("control", "FACTS_REPLY", response)
except Exception:
LOGGER.exception("Unable to retrieve fact")
self._mq_send("control", "FACTS_REPLY", {"subject" : str(resource_id), "code": 404})
except Exception:
LOGGER.exception("Unable to find a handler for %s" % resource_id)
elif operation == "QUEUE":
response = {"queue" : ["%s,v=%d" % (x.id, x.version) for x in self._queue.all()]}
self._mq_send("control", "QUEUE_REPLY", response)
elif operation == "DEPLOY":
self.deploy_config()
elif operation == "INFO":
response = {"threads" : [x.name for x in enumerate()],
"queue length" : self._queue.size(),
"queue ready length" : self._queue.ready_size(),
}
self._mq_send("control", "INFO_REPLY", response)
elif operation == "DUMP":
LOGGER.info("Dumping!")
self._queue.dump()
elif operation == "MODULE_UPDATE":
version = message["version"]
modules = message["modules"]
self._loader.deploy_version(version, modules)
