class EPUControllerService(ServiceProcess):
"""EPU Controller service interface
"""
declare = ServiceProcess.service_declare(name=DEFAULT_NAME, version='0.1.0', dependencies=[])
@defer.inlineCallbacks
def slc_init(self):
scoped_name = self.get_scoped_name("system", self.svc_name)
self.scoped_name = scoped_name
queue_name_work = self.spawn_args.get("queue_name_work")
if queue_name_work:
self.queue_name_work = self.get_scoped_name("system", queue_name_work)
extradict = {"queue_name_work":self.queue_name_work}
cei_events.event(self.svc_name, "init_begin", extra=extradict)
yield self._make_queue(queue_name_work)
queuestat_client = QueueStatClient(self)
yield queuestat_client.watch_queue(self.queue_name_work, self.scoped_name, 'sensor_info')
cei_events.event(self.svc_name, "queue_watched")
else:
self.worker_queue_receiver = None
self.queue_name_work = None
extradict = None
cei_events.event(self.svc_name, "init_begin", extra=extradict)
engineclass = "epu.decisionengine.impls.NpreservingEngine"
if self.spawn_args.has_key("engine_class"):
engineclass = self.spawn_args["engine_class"]
log.info("Using configured decision engine: %s" % engineclass)
else:
log.info("Using default decision engine: %s" % engineclass)
if self.spawn_args.has_key("engine_conf"):
engine_conf = self.spawn_args["engine_conf"]
if isinstance(engine_conf, str):
engine_conf = json.loads(engine_conf)
else:
engine_conf = None
if self.spawn_args.has_key("cassandra"):
cass = self.spawn_args["cassandra"]
host = cass['hostname']
username = cass['username']
password = cass['password']
port = cass['port']
keyspace = cass['keyspace']
store = CassandraControllerStore(self.svc_name, host, port,
username, password, keyspace,
CoreInstance, SensorItem)
store.initialize()
store.activate()
elif self.spawn_args.has_key('store'):
store = self.spawn_args['store']
else:
store = ControllerStore()
self.core = ControllerCore(ProvisionerClient(self), engineclass,
scoped_name, conf=engine_conf, store=store)
# run state recovery and engine initialization
# this one needs to run before any messages start arriving. It pulls
# information from persistence and refreshes local caches.
yield self.core.run_recovery()
# temporarily doing this later due to a potential bug in ioncore where
# queues may not be bound before slc_init runs. This means if the
# provisioner is quck to reply to dump_state some messages may be
# missed.
reactor.callLater(1, self._delayed_init)
@defer.inlineCallbacks
def _delayed_init(self):
yield self.core.run_initialize()
self.core.begin_controlling()
cei_events.event(self.svc_name, "init_end")
@defer.inlineCallbacks
def _make_queue(self, name):
self.worker_queue_receiver = ServiceWorkerReceiver(
label=name,
name=name,
scope='system')
yield self.worker_queue_receiver.initialize()
def op_heartbeat(self, content, headers, msg):
log.debug("Got node heartbeat: %s", content)
return self.core.new_heartbeat(content)
def op_instance_state(self, content, headers, msg):
return self.core.new_instance_state(content)
def op_sensor_info(self, content, headers, msg):
return self.core.new_sensor_info(content)
def op_reconfigure(self, content, headers, msg):
log.info("EPU Controller: reconfigure: '%s'" % content)
return self.core.run_reconfigure(content)
@defer.inlineCallbacks
def op_reconfigure_rpc(self, content, headers, msg):
log.info("EPU Controller: reconfigure_rpc: '%s'" % content)
yield self.core.run_reconfigure(content)
yield self.reply_ok(msg, "")
@defer.inlineCallbacks
def op_de_state(self, content, headers, msg):
state = self.core.de_state()
extradict = {"state":state}
cei_events.event(self.svc_name, "de_state", extra=extradict)
yield self.reply_ok(msg, state)
@defer.inlineCallbacks
def op_whole_state(self, content, headers, msg):
state = yield self.core.whole_state()
yield self.reply_ok(msg, state)
@defer.inlineCallbacks
def op_node_error(self, content, headers, msg):
node_id = content
state = yield self.core.node_error(node_id)
yield self.reply_ok(msg, state)
def _make_queue(self, name):
self.worker_queue_receiver = ServiceWorkerReceiver(
label=name,
name=name,
scope='system')
yield self.worker_queue_receiver.initialize()
def _make_queue(self, name):
self.receiver = ServiceWorkerReceiver(label=name,
name=name,
scope='system')
yield self.receiver.initialize()
class TestQueueStatServiceLive(IonTestCase):
"""Queuestat tests that use a live broker on localhost
"""
@defer.inlineCallbacks
def setUp(self):
#unconditional skip now that @itv is gone. we'll make our own decorator??
raise unittest.SkipTest(
"Skipping test that requires localhost rabbit broker")
if not os.path.exists(os.path.expanduser('~/.erlang.cookie')):
raise unittest.SkipTest('Needs a RabbitMQ server on localhost')
log.debug('Temporarily changing broker_host to 127.0.0.1')
self.other_broker_host = ion.test.iontest.CONF.obj['broker_host']
ion.test.iontest.CONF.obj['broker_host'] = '127.0.0.1'
yield self._start_container()
procs = [
{
'name': 'queuestat',
'module': 'epu.ionproc.queuestat',
'class': 'QueueStatService',
'spawnargs': {
'interval_seconds': 0.1
}
},
]
self.sup = yield self._spawn_processes(procs)
id = str(uuid.uuid4())
id = id[id.rfind('-') + 1:] # shorter id
queuename = '_'.join((__name__, id))
yield self._make_queue(queuename)
self.queuename = pu.get_scoped_name(queuename, "system")
@defer.inlineCallbacks
def _make_queue(self, name):
self.receiver = ServiceWorkerReceiver(label=name,
name=name,
scope='system')
yield self.receiver.initialize()
@defer.inlineCallbacks
def tearDown(self):
# activating the receiver causes the queue to drain, apparently
yield self.receiver.activate()
yield self._shutdown_processes()
yield self._stop_container()
log.debug('Resetting broker_host')
ion.test.iontest.CONF.obj['broker_host'] = self.other_broker_host
@defer.inlineCallbacks
def test_queuestat(self):
subscriber = TestSubscriber()
subId = yield self._spawn_process(subscriber)
queuestat_client = QueueStatClient(subscriber)
yield queuestat_client.watch_queue(self.queuename, str(subId), 'stat')
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 0
yield self._add_messages(5)
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 5
yield self._add_messages(3)
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 8
yield pu.asleep(0.3)
yield queuestat_client.unwatch_queue(self.queuename, str(subId),
'stat')
yield self._add_messages(3)
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 8
@defer.inlineCallbacks
def _add_messages(self, count):
for i in range(count):
yield self.sup.send(self.queuename, 'work',
{'deal': 'this is a fake message'})
class EPUControllerService(ServiceProcess):
"""EPU Controller service interface
"""
declare = ServiceProcess.service_declare(name=DEFAULT_NAME,
version='0.1.0',
dependencies=[])
@defer.inlineCallbacks
def slc_init(self):
scoped_name = self.get_scoped_name("system", self.svc_name)
self.scoped_name = scoped_name
queue_name_work = self.spawn_args.get("queue_name_work")
if queue_name_work:
self.queue_name_work = self.get_scoped_name(
"system", queue_name_work)
extradict = {"queue_name_work": self.queue_name_work}
cei_events.event(self.svc_name, "init_begin", extra=extradict)
yield self._make_queue(queue_name_work)
queuestat_client = QueueStatClient(self)
yield queuestat_client.watch_queue(self.queue_name_work,
self.scoped_name, 'sensor_info')
cei_events.event(self.svc_name, "queue_watched")
else:
self.worker_queue_receiver = None
self.queue_name_work = None
extradict = None
cei_events.event(self.svc_name, "init_begin", extra=extradict)
engineclass = "epu.decisionengine.impls.NpreservingEngine"
if self.spawn_args.has_key("engine_class"):
engineclass = self.spawn_args["engine_class"]
log.info("Using configured decision engine: %s" % engineclass)
else:
log.info("Using default decision engine: %s" % engineclass)
if self.spawn_args.has_key("engine_conf"):
engine_conf = self.spawn_args["engine_conf"]
if isinstance(engine_conf, str):
engine_conf = json.loads(engine_conf)
else:
engine_conf = None
if self.spawn_args.has_key("cassandra"):
cass = self.spawn_args["cassandra"]
host = cass['hostname']
username = cass['username']
password = cass['password']
port = cass['port']
keyspace = cass['keyspace']
store = CassandraControllerStore(self.svc_name, host, port,
username, password, keyspace,
CoreInstance, SensorItem)
store.initialize()
store.activate()
elif self.spawn_args.has_key('store'):
store = self.spawn_args['store']
else:
store = ControllerStore()
self.core = ControllerCore(ProvisionerClient(self),
engineclass,
scoped_name,
conf=engine_conf,
store=store)
# run state recovery and engine initialization
# this one needs to run before any messages start arriving. It pulls
# information from persistence and refreshes local caches.
yield self.core.run_recovery()
# temporarily doing this later due to a potential bug in ioncore where
# queues may not be bound before slc_init runs. This means if the
# provisioner is quck to reply to dump_state some messages may be
# missed.
reactor.callLater(1, self._delayed_init)
@defer.inlineCallbacks
def _delayed_init(self):
yield self.core.run_initialize()
self.core.begin_controlling()
cei_events.event(self.svc_name, "init_end")
@defer.inlineCallbacks
def _make_queue(self, name):
self.worker_queue_receiver = ServiceWorkerReceiver(label=name,
name=name,
scope='system')
yield self.worker_queue_receiver.initialize()
def op_heartbeat(self, content, headers, msg):
log.debug("Got node heartbeat: %s", content)
return self.core.new_heartbeat(content)
def op_instance_state(self, content, headers, msg):
return self.core.new_instance_state(content)
def op_sensor_info(self, content, headers, msg):
return self.core.new_sensor_info(content)
def op_reconfigure(self, content, headers, msg):
log.info("EPU Controller: reconfigure: '%s'" % content)
return self.core.run_reconfigure(content)
@defer.inlineCallbacks
def op_reconfigure_rpc(self, content, headers, msg):
log.info("EPU Controller: reconfigure_rpc: '%s'" % content)
yield self.core.run_reconfigure(content)
yield self.reply_ok(msg, "")
@defer.inlineCallbacks
def op_de_state(self, content, headers, msg):
state = self.core.de_state()
extradict = {"state": state}
cei_events.event(self.svc_name, "de_state", extra=extradict)
yield self.reply_ok(msg, state)
@defer.inlineCallbacks
def op_whole_state(self, content, headers, msg):
state = yield self.core.whole_state()
yield self.reply_ok(msg, state)
@defer.inlineCallbacks
def op_node_error(self, content, headers, msg):
node_id = content
state = yield self.core.node_error(node_id)
yield self.reply_ok(msg, state)
class TestQueueStatServiceLive(IonTestCase):
"""Queuestat tests that use a live broker on localhost
"""
@defer.inlineCallbacks
def setUp(self):
#unconditional skip now that @itv is gone. we'll make our own decorator??
raise unittest.SkipTest("Skipping test that requires localhost rabbit broker")
if not os.path.exists(os.path.expanduser('~/.erlang.cookie')):
raise unittest.SkipTest('Needs a RabbitMQ server on localhost')
log.debug('Temporarily changing broker_host to 127.0.0.1')
self.other_broker_host = ion.test.iontest.CONF.obj['broker_host']
ion.test.iontest.CONF.obj['broker_host'] = '127.0.0.1'
yield self._start_container()
procs = [
{'name':'queuestat','module':'epu.ionproc.queuestat',
'class':'QueueStatService',
'spawnargs' : {'interval_seconds' : 0.1}},
]
self.sup = yield self._spawn_processes(procs)
id = str(uuid.uuid4())
id = id[id.rfind('-')+1:] # shorter id
queuename = '_'.join((__name__, id))
yield self._make_queue(queuename)
self.queuename = pu.get_scoped_name(queuename, "system")
@defer.inlineCallbacks
def _make_queue(self, name):
self.receiver = ServiceWorkerReceiver(
label=name,
name=name,
scope='system')
yield self.receiver.initialize()
@defer.inlineCallbacks
def tearDown(self):
# activating the receiver causes the queue to drain, apparently
yield self.receiver.activate()
yield self._shutdown_processes()
yield self._stop_container()
log.debug('Resetting broker_host')
ion.test.iontest.CONF.obj['broker_host'] = self.other_broker_host
@defer.inlineCallbacks
def test_queuestat(self):
subscriber = TestSubscriber()
subId = yield self._spawn_process(subscriber)
queuestat_client = QueueStatClient(subscriber)
yield queuestat_client.watch_queue(self.queuename, str(subId), 'stat')
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 0
yield self._add_messages(5)
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 5
yield self._add_messages(3)
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 8
yield pu.asleep(0.3)
yield queuestat_client.unwatch_queue(self.queuename, str(subId), 'stat')
yield self._add_messages(3)
yield pu.asleep(0.3)
assert subscriber.queue_length[self.queuename] == 8
@defer.inlineCallbacks
def _add_messages(self, count):
for i in range(count):
yield self.sup.send(self.queuename, 'work',
{'deal' : 'this is a fake message'})
