def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test'
self.process_definition = ProcessDefinition(name=self.process_definition_name, executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "%s.hatests" % bootstrap.get_sys_name()
self._haa_config = {
'highavailability': {
'policy': {
'interval': 1,
'name': 'npreserving',
'parameters': {
'preserve_n': 0
}
},
'process_definition_id': self.process_definition_id,
'dashi_messaging' : True,
'dashi_exchange' : self._haa_dashi_exchange,
'dashi_name': self._haa_dashi_name
},
'agent': {'resource_id': self.resource_id},
}
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.rr_cli = ResourceRegistryServiceClient()
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {
'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'
}
self.process_definition_id = self.pd_cli.create_process_definition(
self.process_definition)
self.waiter = ProcessStateWaiter()
def setUp(self):
self.dashi = None
self._start_container()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self.container = self.container_client._get_container_instance()
app = dict(name="process_dispatcher", processapp=("process_dispatcher",
"ion.services.cei.process_dispatcher_service",
"ProcessDispatcherService"))
self.container.start_app(app, config=pd_config)
self.rr_cli = self.container.resource_registry
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'}
self.process_definition_id = self.pd_cli.create_process_definition(self.process_definition)
self._eea_pids = []
self._tmpdirs = []
self.dashi = get_dashi(uuid.uuid4().hex,
pd_config['processdispatcher']['dashi_uri'],
pd_config['processdispatcher']['dashi_exchange'])
#send a fake node_state message to PD's dashi binding.
self.node1_id = uuid.uuid4().hex
self._send_node_state("engine1", self.node1_id)
self._start_eeagent(self.node1_id)
self.waiter = ProcessStateWaiter()
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(
to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test_haagent_%s' % self.process_definition_id
self.process_definition = ProcessDefinition(
name=self.process_definition_name,
executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition,
self.process_definition_id)
service_definition = SERVICE_DEFINITION_TMPL % self.process_definition_name
sd = IonObject(RT.ServiceDefinition, {
"name": self.process_definition_name,
"definition": service_definition
})
self.service_def_id, _ = self.container.resource_registry.create(sd)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "hatests"
self._haa_config = self._get_haagent_config()
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._spawn_haagent()
self.addCleanup(self._stop_haagent)
self._setup_haa_client()
def setUp(self):
self.dashi = None
self._start_container()
from pyon.public import CFG
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self.container = self.container_client._get_container_instance()
app = dict(name="process_dispatcher",
processapp=("process_dispatcher",
"ion.services.cei.process_dispatcher_service",
"ProcessDispatcherService"))
self.container.start_app(app, config=pd_config)
self.rr_cli = self.container.resource_registry
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {
'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'
}
self.process_definition_id = self.pd_cli.create_process_definition(
self.process_definition)
self._eea_pids = []
self._eea_pid_to_resource_id = {}
self._eea_pid_to_persistence_dir = {}
self._tmpdirs = []
self.dashi = get_dashi(
uuid.uuid4().hex,
pd_config['processdispatcher']['dashi_uri'],
pd_config['processdispatcher']['dashi_exchange'],
sysname=CFG.get_safe("dashi.sysname"))
#send a fake node_state message to PD's dashi binding.
self.node1_id = uuid.uuid4().hex
self._send_node_state("engine1", self.node1_id)
self._initial_eea_pid = self._start_eeagent(self.node1_id)
self.waiter = ProcessStateWaiter()
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test'
self.process_definition = ProcessDefinition(name=self.process_definition_name, executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "%s.hatests" % bootstrap.get_sys_name()
self._haa_config = {
'highavailability': {
'policy': {
'interval': 1,
'name': 'npreserving',
'parameters': {
'preserve_n': 0
}
},
'process_definition_id': self.process_definition_id,
'dashi_messaging' : True,
'dashi_exchange' : self._haa_dashi_exchange,
'dashi_name': self._haa_dashi_name
},
'agent': {'resource_id': self.resource_id},
}
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'}
self.process_definition_id = self.pd_cli.create_process_definition(self.process_definition)
self.waiter = ProcessStateWaiter()
def setUp(self):
self._start_container()
self.container.start_rel_from_url("res/deploy/r2cei.yml")
# self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = "test"
self.process_definition = ProcessDefinition(
name=self.process_definition_name,
executable={"module": "ion.agents.cei.test.test_haagent", "class": "TestProcess"},
)
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "%s.hatests" % bootstrap.get_sys_name()
self._haa_config = {
"highavailability": {
"policy": {"interval": 1, "name": "npreserving", "parameters": {"preserve_n": 0}},
"process_definition_id": self.process_definition_id,
"dashi_messaging": True,
"dashi_exchange": self._haa_dashi_exchange,
"dashi_name": self._haa_dashi_name,
},
"agent": {"resource_id": self.resource_id},
}
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name
)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node, name=self.container.name)
self._haa_pid = self.container_client.spawn_process(
name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent",
config=self._haa_config,
)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info("Got haa client %s.", str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test_haagent_%s' % self.process_definition_id
self.process_definition = ProcessDefinition(name=self.process_definition_name, executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
service_definition = SERVICE_DEFINITION_TMPL % self.process_definition_name
sd = IonObject(RT.ServiceDefinition, {"name": self.process_definition_name,
"definition": service_definition})
self.service_def_id, _ = self.container.resource_registry.create(sd)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "hatests"
self._haa_config = self._get_haagent_config()
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._spawn_haagent()
self.addCleanup(self._stop_haagent)
self._setup_haa_client()
class HighAvailabilityAgentSensorPolicyTest(IonIntegrationTestCase):
def _start_webserver(self, port=None):
""" Start a webserver for testing code download
Note: tries really hard to get a port, and if it can't use
the suggested port, randomly picks another, and returns it
"""
def log_message(self, format, *args):
#swallow log massages
pass
class TestRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
server_version = 'test_server'
extensions_map = ''
def do_GET(self):
self.send_response(200)
self.send_header("Content-type", "text/plain")
self.send_header("Content-Length", len(self.server.response))
self.end_headers()
self.wfile.write(self.server.response)
class Server(HTTPServer):
response = ''
def serve_forever(self):
self._serving = 1
while self._serving:
self.handle_request()
def stop(self):
self._serving = 0
if port is None:
port = 8008
Handler = TestRequestHandler
Handler.log_message = log_message
for i in range(0, 100):
try:
self._webserver = Server(("localhost", port), Handler)
except socket.error:
print "port %s is in use, picking another" % port
port = randint(8000, 10000)
continue
else:
break
self._web_glet = gevent.spawn(self._webserver.serve_forever)
return port
def _stop_webserver(self):
if self._webserver is not None:
self._webserver.stop()
gevent.sleep(2)
self._web_glet.kill()
def await_ha_state(self, want_state, timeout=20):
for i in range(0, timeout):
try:
status = self.haa_client.status().result
if status == want_state:
return
else:
procs = self.get_running_procs()
num_procs = len(procs)
log.debug("assert wants state %s, got state %s, with %s procs" % (want_state,status, num_procs))
except Exception:
log.exception("Problem getting HA status, trying again...")
gevent.sleep(1)
raise Exception("Took more than %s to get to ha state %s" % (timeout, want_state))
@needs_epu
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition = ProcessDefinition(name='test', executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition,
self.process_definition_id)
http_port = 8919
http_port = self._start_webserver(port=http_port)
self.resource_id = "haagent_4567"
self._haa_name = "high_availability_agent"
self._haa_config = {
'server': {
'trafficsentinel': {
'host': 'localhost',
'port': http_port,
'protocol': 'http',
'username': '******',
'password': '******'
}
},
'highavailability': {
'policy': {
'interval': 1,
'name': 'sensor',
'parameters': {
'metric': 'app_attributes:ml',
'sample_period': 600,
'sample_function': 'Average',
'cooldown_period': 5,
'scale_up_threshold': 2.0,
'scale_up_n_processes': 1,
'scale_down_threshold': 1.0,
'scale_down_n_processes': 1,
'maximum_processes': 5,
'minimum_processes': 1,
}
},
'process_definition_id': self.process_definition_id,
"process_dispatchers": [
'process_dispatcher'
]
},
'agent': {'resource_id': self.resource_id},
}
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def tearDown(self):
new_policy = { 'metric': 'app_attributes:ml',
'sample_period': 600,
'sample_function': 'Average',
'cooldown_period': 0,
'scale_up_threshold': 2.0,
'scale_up_n_processes': 1,
'scale_down_threshold': 1.0,
'scale_down_n_processes': 1,
'maximum_processes': 0,
'minimum_processes': 0,
}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 0)
self.waiter.stop()
self.container.terminate_process(self._haa_pid)
self._stop_webserver()
self._stop_container()
def get_running_procs(self):
"""returns a normalized set of running procs (removes the ones that
were there at setup time)
"""
base = self._base_procs
base_pids = [proc.process_id for proc in base]
current = self.pd_cli.list_processes()
current_pids = [proc.process_id for proc in current]
print "filtering base procs %s from %s" % (base_pids, current_pids)
normal = [cproc for cproc in current if cproc.process_id not in base_pids and cproc.process_state == ProcessStateEnum.RUNNING]
return normal
def _get_managed_upids(self):
result = self.haa_client.dump().result
upids = result['managed_upids']
return upids
def _set_response(self, response):
self._webserver.response = response
def test_sensor_policy(self):
status = self.haa_client.status().result
# Ensure HA hasn't already failed
assert status in ('PENDING', 'READY', 'STEADY')
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 1)
self.await_ha_state('STEADY')
# Set ml for each proc such that we scale up
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "pid=%s&ml=5\n" % upid
self._set_response(response)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 2)
# Set ml so we stay steady
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "pid=%s&ml=1.5\n" % upid
self._set_response(response)
self.assertEqual(len(self.get_running_procs()), 2)
self.await_ha_state('STEADY')
# Set ml so we scale down
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "pid=%s&ml=0.5\n" % upid
self._set_response(response)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 1)
self.await_ha_state('STEADY')
class ProcessDispatcherEEAgentIntTest(ProcessDispatcherServiceIntTest):
"""Run the basic int tests again, with a different environment
"""
def setUp(self):
self.dashi = None
self._start_container()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self.container = self.container_client._get_container_instance()
app = dict(name="process_dispatcher", processapp=("process_dispatcher",
"ion.services.cei.process_dispatcher_service",
"ProcessDispatcherService"))
self.container.start_app(app, config=pd_config)
self.rr_cli = self.container.resource_registry
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'}
self.process_definition_id = self.pd_cli.create_process_definition(self.process_definition)
self._eea_pids = []
self._tmpdirs = []
self.dashi = get_dashi(uuid.uuid4().hex,
pd_config['processdispatcher']['dashi_uri'],
pd_config['processdispatcher']['dashi_exchange'])
#send a fake node_state message to PD's dashi binding.
self.node1_id = uuid.uuid4().hex
self._send_node_state("engine1", self.node1_id)
self._start_eeagent(self.node1_id)
self.waiter = ProcessStateWaiter()
def _send_node_state(self, engine_id, node_id=None):
node_id = node_id or uuid.uuid4().hex
node_state = dict(node_id=node_id, state=InstanceState.RUNNING,
domain_id=domain_id_from_engine(engine_id))
self.dashi.fire(get_pd_dashi_name(), "node_state", args=node_state)
def _start_eeagent(self, node_id):
persistence_dir = tempfile.mkdtemp()
self._tmpdirs.append(persistence_dir)
agent_config = _get_eeagent_config(node_id, persistence_dir)
pid = self.container_client.spawn_process(name="eeagent",
module="ion.agents.cei.execution_engine_agent",
cls="ExecutionEngineAgent", config=agent_config)
log.info('Agent pid=%s.', str(pid))
self._eea_pids.append(pid)
def tearDown(self):
for pid in self._eea_pids:
self.container.terminate_process(pid)
for d in self._tmpdirs:
shutil.rmtree(d)
self.waiter.stop()
if self.dashi:
self.dashi.cancel()
def test_requested_ee(self):
# request non-default engine
process_target = ProcessTarget(execution_engine_id="engine2")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start()
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid)
self.waiter.await_state_event(pid, ProcessStateEnum.WAITING)
# request unknown engine, with NEVER queuing mode. The request
# should be rejected.
# verifies L4-CI-CEI-RQ52
process_target = ProcessTarget(execution_engine_id="not-a-real-ee")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
rejected_pid = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=rejected_pid)
self.waiter.await_state_event(rejected_pid, ProcessStateEnum.REJECTED)
# now add a node and eeagent for engine2. original process should leave
# queue and start running
node2_id = uuid.uuid4().hex
self._send_node_state("engine2", node2_id)
self._start_eeagent(node2_id)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
# spawn another process. it should start immediately.
process_target = ProcessTarget(execution_engine_id="engine2")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
pid2 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.RUNNING)
# one more with node exclusive
process_target = ProcessTarget(execution_engine_id="engine2",
node_exclusive="hats")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
pid3 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.RUNNING)
# kill the processes for good
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.TERMINATED)
def test_node_exclusive(self):
# the node_exclusive constraint is used to ensure multiple processes
# of the same "kind" each get a VM exclusive of each other. Other
# processes may run on these VMs, just not processes with the same
# node_exclusive tag. Since we cannot directly query the contents
# of each node in this test, we prove the capability by scheduling
# processes one by one and checking their state.
# verifies L4-CI-CEI-RQ121
# verifies L4-CI-CEI-RQ57
# first off, setUp() created a single node and eeagent.
# We schedule two processes with the same "abc" node_exclusive
# tag. Since there is only one node, the first process should run
# and the second should be queued.
process_target = ProcessTarget(execution_engine_id="engine1")
process_target.node_exclusive = "abc"
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
pid1 = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start()
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid1)
self.waiter.await_state_event(pid1, ProcessStateEnum.RUNNING)
pid2 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.WAITING)
# now demonstrate that the node itself is not full by launching
# a third process without a node_exclusive tag -- it should start
# immediately
process_target.node_exclusive = None
pid3 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.RUNNING)
# finally, add a second node to the engine. pid2 should be started
# since there is an exclusive "abc" node free.
node2_id = uuid.uuid4().hex
self._send_node_state("engine1", node2_id)
self._start_eeagent(node2_id)
self.waiter.await_state_event(pid2, ProcessStateEnum.RUNNING)
# kill the processes for good
self.pd_cli.cancel_process(pid1)
self.waiter.await_state_event(pid1, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.TERMINATED)
def test_code_download(self):
# create a process definition that has no URL; only module and class.
process_definition_no_url = ProcessDefinition(name='test_process_nodownload')
process_definition_no_url.executable = {'module': 'ion.my.test.process',
'class': 'TestProcess'}
process_definition_id_no_url = self.pd_cli.create_process_definition(process_definition_no_url)
# create another that has a URL of the python file (this very file)
# verifies L4-CI-CEI-RQ114
url = "file://%s" % os.path.join(os.path.dirname(__file__), 'test_process_dispatcher.py')
process_definition = ProcessDefinition(name='test_process_download')
process_definition.executable = {'module': 'ion.my.test.process',
'class': 'TestProcess', 'url': url}
process_definition_id = self.pd_cli.create_process_definition(process_definition)
process_target = ProcessTarget()
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
self.waiter.start()
# Test a module with no download fails
pid_no_url = self.pd_cli.create_process(process_definition_id_no_url)
self.pd_cli.schedule_process(process_definition_id_no_url,
process_schedule, process_id=pid_no_url)
self.waiter.await_state_event(pid_no_url, ProcessStateEnum.FAILED)
# Test a module with a URL runs
pid = self.pd_cli.create_process(process_definition_id)
self.pd_cli.schedule_process(process_definition_id,
process_schedule, process_id=pid)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
class ProcessDispatcherServiceIntTest(IonIntegrationTestCase):
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.rr_cli = ResourceRegistryServiceClient()
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'}
self.process_definition_id = self.pd_cli.create_process_definition(self.process_definition)
self.waiter = ProcessStateWaiter()
def tearDown(self):
self.waiter.stop()
def test_create_schedule_cancel(self):
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start(pid)
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, configuration={}, process_id=pid)
self.assertEqual(pid, pid2)
# verifies L4-CI-CEI-RQ141 and L4-CI-CEI-RQ142
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, {})
self.assertEqual(proc.process_state, ProcessStateEnum.RUNNING)
# make sure process is readable directly from RR (mirrored)
# verifies L4-CI-CEI-RQ63
# verifies L4-CI-CEI-RQ64
proc = self.rr_cli.read(pid)
self.assertEqual(proc.process_id, pid)
# now try communicating with the process to make sure it is really running
test_client = TestClient()
for i in range(5):
self.assertEqual(i + 1, test_client.count(timeout=10))
# verifies L4-CI-CEI-RQ147
# kill the process and start it again
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
self.waiter.stop()
oldpid = pid
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start(pid)
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, configuration={}, process_id=pid)
self.assertEqual(pid, pid2)
self.assertNotEqual(oldpid, pid)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
for i in range(5):
self.assertEqual(i + 1, test_client.count(timeout=10))
# kill the process for good
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
def test_schedule_with_config(self):
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start(pid)
# verifies L4-CI-CEI-RQ66
# feed in a string that the process will return -- verifies that
# configuration actually makes it to the instantiated process
test_response = uuid.uuid4().hex
configuration = {"test_response" : test_response}
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, configuration=configuration, process_id=pid)
self.assertEqual(pid, pid2)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
test_client = TestClient()
# verifies L4-CI-CEI-RQ139
# assure that configuration block (which can contain inputs, outputs,
# and arbitrary config) 1) makes it to the process and 2) is returned
# in process queries
self.assertEqual(test_client.query(), test_response)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, configuration)
# kill the process for good
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
def test_schedule_bad_config(self):
process_schedule = ProcessSchedule()
# a non-JSON-serializable IonObject
o = ProcessTarget()
with self.assertRaises(BadRequest) as ar:
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, configuration={"bad": o})
self.assertTrue(ar.exception.message.startswith("bad configuration"))
def test_create_invalid_definition(self):
# create process definition missing module and class
# verifies L4-CI-CEI-RQ137
executable = dict(url="http://somewhere.com/something.py")
definition = ProcessDefinition(name="test_process", executable=executable)
with self.assertRaises(BadRequest) as ar:
self.pd_cli.create_process_definition(definition)
class ProcessDispatcherEEAgentIntTest(ProcessDispatcherServiceIntTest):
"""Run the basic int tests again, with a different environment
"""
def setUp(self):
self.dashi = None
self._start_container()
from pyon.public import CFG
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self.container = self.container_client._get_container_instance()
app = dict(name="process_dispatcher", processapp=("process_dispatcher",
"ion.services.cei.process_dispatcher_service",
"ProcessDispatcherService"))
self.container.start_app(app, config=pd_config)
self.rr_cli = self.container.resource_registry
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'}
self.process_definition_id = self.pd_cli.create_process_definition(self.process_definition)
self._eea_pids = []
self._eea_pid_to_resource_id = {}
self._eea_pid_to_persistence_dir = {}
self._tmpdirs = []
self.dashi = get_dashi(uuid.uuid4().hex,
pd_config['processdispatcher']['dashi_uri'],
pd_config['processdispatcher']['dashi_exchange'],
sysname=CFG.get_safe("dashi.sysname")
)
#send a fake node_state message to PD's dashi binding.
self.node1_id = uuid.uuid4().hex
self._send_node_state("engine1", self.node1_id)
self._initial_eea_pid = self._start_eeagent(self.node1_id)
self.waiter = ProcessStateWaiter()
def _send_node_state(self, engine_id, node_id=None):
node_id = node_id or uuid.uuid4().hex
node_state = dict(node_id=node_id, state=InstanceState.RUNNING,
domain_id=domain_id_from_engine(engine_id))
self.dashi.fire(get_pd_dashi_name(), "node_state", args=node_state)
def _start_eeagent(self, node_id, resource_id=None, persistence_dir=None):
if not persistence_dir:
persistence_dir = tempfile.mkdtemp()
self._tmpdirs.append(persistence_dir)
resource_id = resource_id or uuid.uuid4().hex
agent_config = _get_eeagent_config(node_id, persistence_dir,
resource_id=resource_id)
pid = self.container_client.spawn_process(name="eeagent",
module="ion.agents.cei.execution_engine_agent",
cls="ExecutionEngineAgent", config=agent_config)
log.info('Agent pid=%s.', str(pid))
self._eea_pids.append(pid)
self._eea_pid_to_resource_id[pid] = resource_id
self._eea_pid_to_persistence_dir[pid] = persistence_dir
return pid
def _kill_eeagent(self, pid):
self.assertTrue(pid in self._eea_pids)
self.container.terminate_process(pid)
self._eea_pids.remove(pid)
del self._eea_pid_to_resource_id[pid]
del self._eea_pid_to_persistence_dir[pid]
def tearDown(self):
for pid in list(self._eea_pids):
self._kill_eeagent(pid)
for d in self._tmpdirs:
shutil.rmtree(d)
self.waiter.stop()
if self.dashi:
self.dashi.cancel()
def test_requested_ee(self):
# request non-default engine
process_target = ProcessTarget(execution_engine_id="engine2")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start()
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid)
self.waiter.await_state_event(pid, ProcessStateEnum.WAITING)
# request unknown engine, with NEVER queuing mode. The request
# should be rejected.
# verifies L4-CI-CEI-RQ52
process_target = ProcessTarget(execution_engine_id="not-a-real-ee")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
rejected_pid = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=rejected_pid)
self.waiter.await_state_event(rejected_pid, ProcessStateEnum.REJECTED)
# now add a node and eeagent for engine2. original process should leave
# queue and start running
node2_id = uuid.uuid4().hex
self._send_node_state("engine2", node2_id)
self._start_eeagent(node2_id)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
# spawn another process. it should start immediately.
process_target = ProcessTarget(execution_engine_id="engine2")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
pid2 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.RUNNING)
# one more with node exclusive
process_target = ProcessTarget(execution_engine_id="engine2",
node_exclusive="hats")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
pid3 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.RUNNING)
# kill the processes for good
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.TERMINATED)
def test_node_exclusive(self):
# the node_exclusive constraint is used to ensure multiple processes
# of the same "kind" each get a VM exclusive of each other. Other
# processes may run on these VMs, just not processes with the same
# node_exclusive tag. Since we cannot directly query the contents
# of each node in this test, we prove the capability by scheduling
# processes one by one and checking their state.
# verifies L4-CI-CEI-RQ121
# verifies L4-CI-CEI-RQ57
# first off, setUp() created a single node and eeagent.
# We schedule two processes with the same "abc" node_exclusive
# tag. Since there is only one node, the first process should run
# and the second should be queued.
process_target = ProcessTarget(execution_engine_id="engine1")
process_target.node_exclusive = "abc"
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
pid1 = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start()
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid1)
self.waiter.await_state_event(pid1, ProcessStateEnum.RUNNING)
pid2 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.WAITING)
# now demonstrate that the node itself is not full by launching
# a third process without a node_exclusive tag -- it should start
# immediately
process_target.node_exclusive = None
pid3 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.RUNNING)
# finally, add a second node to the engine. pid2 should be started
# since there is an exclusive "abc" node free.
node2_id = uuid.uuid4().hex
self._send_node_state("engine1", node2_id)
self._start_eeagent(node2_id)
self.waiter.await_state_event(pid2, ProcessStateEnum.RUNNING)
# kill the processes for good
self.pd_cli.cancel_process(pid1)
self.waiter.await_state_event(pid1, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.TERMINATED)
def test_code_download(self):
# create a process definition that has no URL; only module and class.
process_definition_no_url = ProcessDefinition(name='test_process_nodownload')
process_definition_no_url.executable = {'module': 'ion.my.test.process',
'class': 'TestProcess'}
process_definition_id_no_url = self.pd_cli.create_process_definition(process_definition_no_url)
# create another that has a URL of the python file (this very file)
# verifies L4-CI-CEI-RQ114
url = "file://%s" % os.path.join(os.path.dirname(__file__), 'test_process_dispatcher.py')
process_definition = ProcessDefinition(name='test_process_download')
process_definition.executable = {'module': 'ion.my.test.process',
'class': 'TestProcess', 'url': url}
process_definition_id = self.pd_cli.create_process_definition(process_definition)
process_target = ProcessTarget()
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
self.waiter.start()
# Test a module with no download fails
pid_no_url = self.pd_cli.create_process(process_definition_id_no_url)
self.pd_cli.schedule_process(process_definition_id_no_url,
process_schedule, process_id=pid_no_url)
self.waiter.await_state_event(pid_no_url, ProcessStateEnum.FAILED)
# Test a module with a URL runs
pid = self.pd_cli.create_process(process_definition_id)
self.pd_cli.schedule_process(process_definition_id,
process_schedule, process_id=pid)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
def _add_test_process(self, restart_mode=None):
process_schedule = ProcessSchedule()
if restart_mode is not None:
process_schedule.restart_mode = restart_mode
pid = self.pd_cli.create_process(self.process_definition_id)
pid_listen_name = "PDtestproc_%s" % uuid.uuid4().hex
config = {'process': {'listen_name': pid_listen_name}}
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, process_id=pid, configuration=config)
client = TestClient(to_name=pid_listen_name)
return pid, client
def test_restart(self):
self.waiter.start()
restartable_pids = []
nonrestartable_pids = []
clients = {}
# start 10 processes with RestartMode.ALWAYS
for _ in range(10):
pid, client = self._add_test_process(ProcessRestartMode.ALWAYS)
restartable_pids.append(pid)
clients[pid] = client
# and 10 processes with RestartMode.ABNORMAL
for _ in range(10):
pid, client = self._add_test_process(ProcessRestartMode.ABNORMAL)
restartable_pids.append(pid)
clients[pid] = client
# and 10 with RestartMode.NEVER
for _ in range(10):
pid, client = self._add_test_process(ProcessRestartMode.NEVER)
nonrestartable_pids.append(pid)
clients[pid] = client
all_pids = restartable_pids + nonrestartable_pids
self.waiter.await_many_state_events(all_pids, ProcessStateEnum.RUNNING)
for pid in all_pids:
client = clients[pid]
self.assertFalse(client.is_restart())
self.assertEqual(client.count(), 1)
# now kill the whole eeagent and restart it. processes should
# show up as FAILED in the next heartbeat.
resource_id = self._eea_pid_to_resource_id[self._initial_eea_pid]
persistence_dir = self._eea_pid_to_persistence_dir[self._initial_eea_pid]
log.debug("Restarting eeagent %s", self._initial_eea_pid)
self._kill_eeagent(self._initial_eea_pid)
# manually kill the processes to simulate a real container failure
for pid in all_pids:
self.container.terminate_process(pid)
self._start_eeagent(self.node1_id, resource_id=resource_id,
persistence_dir=persistence_dir)
# wait for restartables to restart
self.waiter.await_many_state_events(restartable_pids, ProcessStateEnum.RUNNING)
# query the processes again. it should have restart mode config
for pid in restartable_pids:
client = clients[pid]
self.assertTrue(client.is_restart())
self.assertEqual(client.count(), 1)
# meanwhile some procs should not have restarted
for pid in nonrestartable_pids:
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_state, ProcessStateEnum.FAILED)
# guard against extraneous events we were receiving as part of a bug:
# processes restarting again after they were already restarted
self.waiter.await_nothing(timeout=5)
def test_idempotency(self):
# ensure every operation can be safely retried
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
proc_name = 'myreallygoodname'
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start(pid)
# note: if we import UNSCHEDULED state into ProcessStateEnum,
# this assertion will need to change.
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_state, ProcessStateEnum.REQUESTED)
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, configuration={}, process_id=pid, name=proc_name)
self.assertEqual(pid, pid2)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
# repeating schedule is harmless
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule, configuration={}, process_id=pid, name=proc_name)
self.assertEqual(pid, pid2)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, {})
self.assertEqual(proc.process_state, ProcessStateEnum.RUNNING)
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
# repeating cancel is harmless
self.pd_cli.cancel_process(pid)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, {})
self.assertEqual(proc.process_state, ProcessStateEnum.TERMINATED)
class HighAvailabilityAgentSensorPolicyTest(IonIntegrationTestCase):
def _start_webserver(self, port=None):
""" Start a webserver for testing code download
Note: tries really hard to get a port, and if it can't use
the suggested port, randomly picks another, and returns it
"""
def log_message(self, format, *args):
# swallow log massages
pass
class TestRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
server_version = "test_server"
extensions_map = ""
def do_GET(self):
self.send_response(200)
self.send_header("Content-type", "text/plain")
self.send_header("Content-Length", len(self.server.response))
self.end_headers()
self.wfile.write(self.server.response)
class Server(HTTPServer):
response = ""
def serve_forever(self):
self._serving = 1
while self._serving:
self.handle_request()
def stop(self):
self._serving = 0
if port is None:
port = 8008
Handler = TestRequestHandler
Handler.log_message = log_message
for i in range(0, 100):
try:
self._webserver = Server(("localhost", port), Handler)
except socket.error:
print "port %s is in use, picking another" % port
port = randint(8000, 10000)
continue
else:
break
self._web_glet = gevent.spawn(self._webserver.serve_forever)
return port
def _stop_webserver(self):
if self._webserver is not None:
self._webserver.stop()
gevent.sleep(2)
self._web_glet.kill()
@needs_epu
def setUp(self):
self._start_container()
self.container.start_rel_from_url("res/deploy/r2cei.yml")
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition = ProcessDefinition(
name="test", executable={"module": "ion.agents.cei.test.test_haagent", "class": "TestProcess"}
)
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
http_port = 8919
http_port = self._start_webserver(port=http_port)
self.resource_id = "haagent_4567"
self._haa_name = "high_availability_agent"
self._haa_config = {
"highavailability": {
"policy": {
"interval": 1,
"name": "sensor",
"parameters": {
"metric": "app_attributes:ml",
"sample_period": 600,
"sample_function": "Average",
"cooldown_period": 20,
"scale_up_threshold": 2.0,
"scale_up_n_processes": 1,
"scale_down_threshold": 1.0,
"scale_down_n_processes": 1,
"maximum_processes": 5,
"minimum_processes": 1,
},
},
"aggregator": {
"type": "trafficsentinel",
"host": "localhost",
"port": http_port,
"protocol": "http",
"username": "******",
"password": "******",
},
"process_definition_id": self.process_definition_id,
"process_dispatchers": ["process_dispatcher"],
},
"agent": {"resource_id": self.resource_id},
}
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node, name=self.container.name)
self._haa_pid = self.container_client.spawn_process(
name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent",
config=self._haa_config,
)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info("Got haa client %s.", str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def tearDown(self):
self.waiter.stop()
self.container.terminate_process(self._haa_pid)
self._stop_webserver()
self._stop_container()
def get_running_procs(self):
"""returns a normalized set of running procs (removes the ones that
were there at setup time)
"""
base = self._base_procs
base_pids = [proc.process_id for proc in base]
current = self.pd_cli.list_processes()
current_pids = [proc.process_id for proc in current]
print "filtering base procs %s from %s" % (base_pids, current_pids)
normal = [
cproc
for cproc in current
if cproc.process_id not in base_pids and cproc.process_state == ProcessStateEnum.RUNNING
]
return normal
def _get_managed_upids(self):
result = self.haa_client.dump().result
upids = result["managed_upids"]
return upids
def _set_response(self, response):
self._webserver.response = response
def test_sensor_policy(self):
status = self.haa_client.status().result
# Ensure HA hasn't already failed
assert status in ("PENDING", "READY", "STEADY")
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 1)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, "STEADY")
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
# Set ml for each proc such that we scale up
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "%s,ml=5\n"
self._set_response(response)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 2)
# Set ml so we stay steady
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "%s,ml=1.5\n"
self._set_response(response)
self.assertEqual(len(self.get_running_procs()), 2)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, "STEADY")
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
# Set ml so we scale down
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "%s,ml=0.5\n"
self._set_response(response)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 1)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, "STEADY")
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
class HighAvailabilityAgentTest(IonIntegrationTestCase):
@needs_epu
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test'
self.process_definition = ProcessDefinition(name=self.process_definition_name, executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "%s.hatests" % bootstrap.get_sys_name()
self._haa_config = {
'highavailability': {
'policy': {
'interval': 1,
'name': 'npreserving',
'parameters': {
'preserve_n': 0
}
},
'process_definition_id': self.process_definition_id,
'dashi_messaging' : True,
'dashi_exchange' : self._haa_dashi_exchange,
'dashi_name': self._haa_dashi_name
},
'agent': {'resource_id': self.resource_id},
}
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def tearDown(self):
self.waiter.stop()
try:
self.container.terminate_process(self._haa_pid)
except BadRequest:
log.warning("Couldn't terminate HA Agent in teardown (May have been terminated by a test)")
self._stop_container()
def get_running_procs(self):
"""returns a normalized set of running procs (removes the ones that
were there at setup time)
"""
base = self._base_procs
base_pids = [proc.process_id for proc in base]
current = self.pd_cli.list_processes()
current_pids = [proc.process_id for proc in current]
print "filtering base procs %s from %s" % (base_pids, current_pids)
normal = [cproc for cproc in current if cproc.process_id not in base_pids and cproc.process_state == ProcessStateEnum.RUNNING]
return normal
def get_new_services(self):
base = self._base_services
base_names = [i.name for i in base]
services_registered, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
current_names = [i.name for i in services_registered]
normal = [cserv for cserv in services_registered if cserv.name not in base_names]
return normal
def await_ha_state(self, want_state, timeout=10):
for i in range(0, timeout):
status = self.haa_client.status().result
if status == want_state:
return
gevent.sleep(1)
raise Exception("Took more than %s to get to ha state %s" % (timeout, want_state))
def test_features(self):
status = self.haa_client.status().result
# Ensure HA hasn't already failed
assert status in ('PENDING', 'READY', 'STEADY')
# verifies L4-CI-CEI-RQ44
# Note: the HA agent is started in the setUp() method, with config
# pointing to the test "service". The initial config is set to preserve
# 0 service processes. With this reconfigure step below, we change that
# to launch 1.
new_policy = {'preserve_n': 1}
self.haa_client.reconfigure_policy(new_policy)
result = self.haa_client.dump().result
self.assertEqual(result['policy'], new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 1)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, 'STEADY')
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
# verifies L4-CI-CEI-RQ122 and L4-CI-CEI-RQ124
new_policy = {'preserve_n': 2}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 2)
new_policy = {'preserve_n': 1}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 1)
new_policy = {'preserve_n': 0}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 0)
def test_associations(self):
# Ensure that once the HA Agent starts, there is a Service object in
# the registry
result = self.haa_client.dump().result
service_id = result.get('service_id')
self.assertIsNotNone(service_id)
service = self.container.resource_registry.read(service_id)
self.assertIsNotNone(service)
# Ensure that once a process is started, there is an association between
# it and the service
new_policy = {'preserve_n': 1}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 1)
self.await_ha_state('STEADY')
proc = self.get_running_procs()[0]
processes_associated, _ = self.container.resource_registry.find_resources(
restype="Process", name=proc.process_id)
self.assertEqual(len(processes_associated), 1)
has_processes = self.container.resource_registry.find_associations(
service, "hasProcess")
self.assertEqual(len(has_processes), 1)
self.await_ha_state('STEADY')
# Ensure that once we terminate that process, there are no associations
new_policy = {'preserve_n': 0}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 0)
processes_associated, _ = self.container.resource_registry.find_resources(
restype="Process", name=proc.process_id)
self.assertEqual(len(processes_associated), 0)
has_processes = self.container.resource_registry.find_associations(
service, "hasProcess")
self.assertEqual(len(has_processes), 0)
# Ensure that once we terminate that HA Agent, the Service object is
# cleaned up
self.container.terminate_process(self._haa_pid)
with self.assertRaises(NotFound):
service = self.container.resource_registry.read(service_id)
def test_dashi(self):
import dashi
dashi_conn = dashi.DashiConnection("something", self._haa_dashi_uri,
self._haa_dashi_exchange)
status = dashi_conn.call(self._haa_dashi_name, "status")
assert status in ('PENDING', 'READY', 'STEADY')
new_policy = {'preserve_n': 0}
dashi_conn.call(self._haa_dashi_name, "reconfigure_policy",
new_policy=new_policy)
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition = ProcessDefinition(name='test', executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition,
self.process_definition_id)
http_port = 8919
http_port = self._start_webserver(port=http_port)
self.resource_id = "haagent_4567"
self._haa_name = "high_availability_agent"
self._haa_config = {
'highavailability': {
'policy': {
'interval': 1,
'name': 'sensor',
'parameters': {
'metric': 'app_attributes:ml',
'sample_period': 600,
'sample_function': 'Average',
'cooldown_period': 20,
'scale_up_threshold': 2.0,
'scale_up_n_processes': 1,
'scale_down_threshold': 1.0,
'scale_down_n_processes': 1,
'maximum_processes': 5,
'minimum_processes': 1,
}
},
'aggregator': {
'type': 'trafficsentinel',
'host': 'localhost',
'port': http_port,
'protocol': 'http',
'username': '******',
'password': '******'
},
'process_definition_id': self.process_definition_id,
"process_dispatchers": [
'process_dispatcher'
]
},
'agent': {'resource_id': self.resource_id},
}
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
class BaseHighAvailabilityAgentTest(IonIntegrationTestCase):
@needs_epu
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(
to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test_haagent_%s' % self.process_definition_id
self.process_definition = ProcessDefinition(
name=self.process_definition_name,
executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition,
self.process_definition_id)
service_definition = SERVICE_DEFINITION_TMPL % self.process_definition_name
sd = IonObject(RT.ServiceDefinition, {
"name": self.process_definition_name,
"definition": service_definition
})
self.service_def_id, _ = self.container.resource_registry.create(sd)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "hatests"
self._haa_config = self._get_haagent_config()
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._spawn_haagent()
self._setup_haa_client()
def _get_haagent_config(self):
return {
'highavailability': {
'policy': {
'interval': 1,
'name': 'npreserving',
'parameters': {
'preserve_n': 0
}
},
'process_definition_id': self.process_definition_id,
'dashi_messaging': True,
'dashi_exchange': self._haa_dashi_exchange,
'dashi_name': self._haa_dashi_name
},
'agent': {
'resource_id': self.resource_id
},
}
def _setup_haa_client(self):
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(
self.resource_id, process=FakeProcess())
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def _spawn_haagent(self, policy_parameters=None):
config = deepcopy(self._haa_config)
if policy_parameters is not None:
config['highavailability']['policy'][
'parameters'] = policy_parameters
self._haa_pid = self.container_client.spawn_process(
name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent",
config=config)
def _kill_haagent(self):
self.container.terminate_process(self._haa_pid)
def tearDown(self):
new_policy = {'preserve_n': 0}
self.haa_client.reconfigure_policy(new_policy)
self.assertEqual(len(self.get_running_procs()), 0)
self.await_ha_state('STEADY')
self.waiter.stop()
try:
self._kill_haagent()
except BadRequest:
log.warning(
"Couldn't terminate HA Agent in teardown (May have been terminated by a test)"
)
self.container.resource_registry.delete(self.service_def_id,
del_associations=True)
self._stop_container()
def get_running_procs(self):
"""returns a normalized set of running procs (removes the ones that
were there at setup time)
"""
base = self._base_procs
base_pids = [proc.process_id for proc in base]
current = self.pd_cli.list_processes()
current_pids = [proc.process_id for proc in current]
print "filtering base procs %s from %s" % (base_pids, current_pids)
normal = [
cproc for cproc in current if cproc.process_id not in base_pids
and cproc.process_state == ProcessStateEnum.RUNNING
]
return normal
def get_new_services(self):
base = self._base_services
base_names = [i.name for i in base]
services_registered, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
normal = [
cserv for cserv in services_registered
if cserv.name not in base_names
]
return normal
def await_ha_state(self, want_state, timeout=20):
for i in range(0, timeout):
try:
status = self.haa_client.status().result
if status == want_state:
return
else:
procs = self.get_running_procs()
num_procs = len(procs)
log.debug(
"assert wants state %s, got state %s, with %s procs" %
(want_state, status, num_procs))
except Exception:
log.exception("Problem getting HA status, trying again...")
gevent.sleep(1)
raise Exception("Took more than %s to get to ha state %s" %
(timeout, want_state))
def await_pyon_ha_state(self, want_state, timeout=20):
for i in range(0, timeout):
try:
result = self.haa_client.dump().result
service_id = result.get('service_id')
service = self.container.resource_registry.read(service_id)
if service.state == want_state:
return
else:
log.debug("want state %s, got state %s") % (want_state,
service.state)
except Exception:
log.exception("Problem getting HA status, trying again...")
gevent.sleep(1)
raise Exception("Took more than %s to get to pyon ha state %s" %
(timeout, want_state))
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition = ProcessDefinition(name='test', executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition,
self.process_definition_id)
http_port = 8919
http_port = self._start_webserver(port=http_port)
self.resource_id = "haagent_4567"
self._haa_name = "high_availability_agent"
self._haa_config = {
'server': {
'trafficsentinel': {
'host': 'localhost',
'port': http_port,
'protocol': 'http',
'username': '******',
'password': '******'
}
},
'highavailability': {
'policy': {
'interval': 1,
'name': 'sensor',
'parameters': {
'metric': 'app_attributes:ml',
'sample_period': 600,
'sample_function': 'Average',
'cooldown_period': 5,
'scale_up_threshold': 2.0,
'scale_up_n_processes': 1,
'scale_down_threshold': 1.0,
'scale_down_n_processes': 1,
'maximum_processes': 5,
'minimum_processes': 1,
}
},
'process_definition_id': self.process_definition_id,
"process_dispatchers": [
'process_dispatcher'
]
},
'agent': {'resource_id': self.resource_id},
}
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
class HighAvailabilityAgentTest(IonIntegrationTestCase):
@needs_epu
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test'
self.process_definition = ProcessDefinition(name=self.process_definition_name, executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "%s.hatests" % bootstrap.get_sys_name()
self._haa_config = {
'highavailability': {
'policy': {
'interval': 1,
'name': 'npreserving',
'parameters': {
'preserve_n': 0
}
},
'process_definition_id': self.process_definition_id,
'dashi_messaging' : True,
'dashi_exchange' : self._haa_dashi_exchange,
'dashi_name': self._haa_dashi_name
},
'agent': {'resource_id': self.resource_id},
}
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def tearDown(self):
self.waiter.stop()
try:
self.container.terminate_process(self._haa_pid)
except BadRequest:
log.warning("Couldn't terminate HA Agent in teardown (May have been terminated by a test)")
self._stop_container()
def get_running_procs(self):
"""returns a normalized set of running procs (removes the ones that
were there at setup time)
"""
base = self._base_procs
base_pids = [proc.process_id for proc in base]
current = self.pd_cli.list_processes()
current_pids = [proc.process_id for proc in current]
print "filtering base procs %s from %s" % (base_pids, current_pids)
normal = [cproc for cproc in current if cproc.process_id not in base_pids and cproc.process_state == ProcessStateEnum.RUNNING]
return normal
def get_new_services(self):
base = self._base_services
base_names = [i.name for i in base]
services_registered, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
current_names = [i.name for i in services_registered]
normal = [cserv for cserv in services_registered if cserv.name not in base_names]
return normal
def await_ha_state(self, want_state, timeout=10):
for i in range(0, timeout):
status = self.haa_client.status().result
if status == want_state:
return
gevent.sleep(1)
raise Exception("Took more than %s to get to ha state %s" % (timeout, want_state))
def test_features(self):
status = self.haa_client.status().result
# Ensure HA hasn't already failed
assert status in ('PENDING', 'READY', 'STEADY')
# verifies L4-CI-CEI-RQ44
# Note: the HA agent is started in the setUp() method, with config
# pointing to the test "service". The initial config is set to preserve
# 0 service processes. With this reconfigure step below, we change that
# to launch 1.
new_policy = {'preserve_n': 1}
self.haa_client.reconfigure_policy(new_policy)
result = self.haa_client.dump().result
self.assertEqual(result['policy'], new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 1)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, 'STEADY')
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
# Ensure Service object has the correct state
result = self.haa_client.dump().result
service_id = result.get('service_id')
service = self.container.resource_registry.read(service_id)
self.assertEqual(service.state, ServiceStateEnum.STEADY)
# verifies L4-CI-CEI-RQ122 and L4-CI-CEI-RQ124
new_policy = {'preserve_n': 2}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 2)
new_policy = {'preserve_n': 1}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 1)
new_policy = {'preserve_n': 0}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 0)
def test_associations(self):
# Ensure that once the HA Agent starts, there is a Service object in
# the registry
result = self.haa_client.dump().result
service_id = result.get('service_id')
self.assertIsNotNone(service_id)
service = self.container.resource_registry.read(service_id)
self.assertIsNotNone(service)
# Ensure that once a process is started, there is an association between
# it and the service
new_policy = {'preserve_n': 1}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 1)
self.await_ha_state('STEADY')
proc = self.get_running_procs()[0]
processes_associated, _ = self.container.resource_registry.find_resources(
restype="Process", name=proc.process_id)
self.assertEqual(len(processes_associated), 1)
has_processes = self.container.resource_registry.find_associations(
service, "hasProcess")
self.assertEqual(len(has_processes), 1)
self.await_ha_state('STEADY')
# Ensure that once we terminate that process, there are no associations
new_policy = {'preserve_n': 0}
self.haa_client.reconfigure_policy(new_policy)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 0)
processes_associated, _ = self.container.resource_registry.find_resources(
restype="Process", name=proc.process_id)
self.assertEqual(len(processes_associated), 0)
has_processes = self.container.resource_registry.find_associations(
service, "hasProcess")
self.assertEqual(len(has_processes), 0)
# Ensure that once we terminate that HA Agent, the Service object is
# cleaned up
self.container.terminate_process(self._haa_pid)
with self.assertRaises(NotFound):
service = self.container.resource_registry.read(service_id)
def test_dashi(self):
import dashi
dashi_conn = dashi.DashiConnection("something", self._haa_dashi_uri,
self._haa_dashi_exchange)
status = dashi_conn.call(self._haa_dashi_name, "status")
assert status in ('PENDING', 'READY', 'STEADY')
new_policy = {'preserve_n': 0}
dashi_conn.call(self._haa_dashi_name, "reconfigure_policy",
new_policy=new_policy)
def setUp(self):
self._start_container()
self.container.start_rel_from_url("res/deploy/r2cei.yml")
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition = ProcessDefinition(
name="test", executable={"module": "ion.agents.cei.test.test_haagent", "class": "TestProcess"}
)
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
http_port = 8919
http_port = self._start_webserver(port=http_port)
self.resource_id = "haagent_4567"
self._haa_name = "high_availability_agent"
self._haa_config = {
"highavailability": {
"policy": {
"interval": 1,
"name": "sensor",
"parameters": {
"metric": "app_attributes:ml",
"sample_period": 600,
"sample_function": "Average",
"cooldown_period": 20,
"scale_up_threshold": 2.0,
"scale_up_n_processes": 1,
"scale_down_threshold": 1.0,
"scale_down_n_processes": 1,
"maximum_processes": 5,
"minimum_processes": 1,
},
},
"aggregator": {
"type": "trafficsentinel",
"host": "localhost",
"port": http_port,
"protocol": "http",
"username": "******",
"password": "******",
},
"process_definition_id": self.process_definition_id,
"process_dispatchers": ["process_dispatcher"],
},
"agent": {"resource_id": self.resource_id},
}
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node, name=self.container.name)
self._haa_pid = self.container_client.spawn_process(
name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent",
config=self._haa_config,
)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info("Got haa client %s.", str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
class ProcessDispatcherEEAgentIntTest(ProcessDispatcherServiceIntTest):
"""Run the basic int tests again, with a different environment
"""
def setUp(self):
self.dashi = None
self._start_container()
from pyon.public import CFG
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self.container = self.container_client._get_container_instance()
app = dict(name="process_dispatcher",
processapp=("process_dispatcher",
"ion.services.cei.process_dispatcher_service",
"ProcessDispatcherService"))
self.container.start_app(app, config=pd_config)
self.rr_cli = self.container.resource_registry
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {
'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'
}
self.process_definition_id = self.pd_cli.create_process_definition(
self.process_definition)
self._eea_pids = []
self._eea_pid_to_resource_id = {}
self._eea_pid_to_persistence_dir = {}
self._tmpdirs = []
self.dashi = get_dashi(
uuid.uuid4().hex,
pd_config['processdispatcher']['dashi_uri'],
pd_config['processdispatcher']['dashi_exchange'],
sysname=CFG.get_safe("dashi.sysname"))
#send a fake node_state message to PD's dashi binding.
self.node1_id = uuid.uuid4().hex
self._send_node_state("engine1", self.node1_id)
self._initial_eea_pid = self._start_eeagent(self.node1_id)
self.waiter = ProcessStateWaiter()
def _send_node_state(self, engine_id, node_id=None):
node_id = node_id or uuid.uuid4().hex
node_state = dict(node_id=node_id,
state=InstanceState.RUNNING,
domain_id=domain_id_from_engine(engine_id))
self.dashi.fire(get_pd_dashi_name(), "node_state", args=node_state)
def _start_eeagent(self, node_id, resource_id=None, persistence_dir=None):
if not persistence_dir:
persistence_dir = tempfile.mkdtemp()
self._tmpdirs.append(persistence_dir)
resource_id = resource_id or uuid.uuid4().hex
agent_config = _get_eeagent_config(node_id,
persistence_dir,
resource_id=resource_id)
pid = self.container_client.spawn_process(
name="eeagent",
module="ion.agents.cei.execution_engine_agent",
cls="ExecutionEngineAgent",
config=agent_config)
log.info('Agent pid=%s.', str(pid))
self._eea_pids.append(pid)
self._eea_pid_to_resource_id[pid] = resource_id
self._eea_pid_to_persistence_dir[pid] = persistence_dir
return pid
def _kill_eeagent(self, pid):
self.assertTrue(pid in self._eea_pids)
self.container.terminate_process(pid)
self._eea_pids.remove(pid)
del self._eea_pid_to_resource_id[pid]
del self._eea_pid_to_persistence_dir[pid]
def tearDown(self):
for pid in list(self._eea_pids):
self._kill_eeagent(pid)
for d in self._tmpdirs:
shutil.rmtree(d)
self.waiter.stop()
if self.dashi:
self.dashi.cancel()
def test_requested_ee(self):
# request non-default engine
process_target = ProcessTarget(execution_engine_id="engine2")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start()
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=pid)
self.waiter.await_state_event(pid, ProcessStateEnum.WAITING)
# request unknown engine, with NEVER queuing mode. The request
# should be rejected.
# verifies L4-CI-CEI-RQ52
process_target = ProcessTarget(execution_engine_id="not-a-real-ee")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
rejected_pid = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=rejected_pid)
self.waiter.await_state_event(rejected_pid, ProcessStateEnum.REJECTED)
# now add a node and eeagent for engine2. original process should leave
# queue and start running
node2_id = uuid.uuid4().hex
self._send_node_state("engine2", node2_id)
self._start_eeagent(node2_id)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
# spawn another process. it should start immediately.
process_target = ProcessTarget(execution_engine_id="engine2")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
pid2 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.RUNNING)
# one more with node exclusive
process_target = ProcessTarget(execution_engine_id="engine2",
node_exclusive="hats")
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.NEVER
process_schedule.target = process_target
pid3 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.RUNNING)
# kill the processes for good
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.TERMINATED)
def test_node_exclusive(self):
# the node_exclusive constraint is used to ensure multiple processes
# of the same "kind" each get a VM exclusive of each other. Other
# processes may run on these VMs, just not processes with the same
# node_exclusive tag. Since we cannot directly query the contents
# of each node in this test, we prove the capability by scheduling
# processes one by one and checking their state.
# verifies L4-CI-CEI-RQ121
# verifies L4-CI-CEI-RQ57
# first off, setUp() created a single node and eeagent.
# We schedule two processes with the same "abc" node_exclusive
# tag. Since there is only one node, the first process should run
# and the second should be queued.
process_target = ProcessTarget(execution_engine_id="engine1")
process_target.node_exclusive = "abc"
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
pid1 = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start()
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=pid1)
self.waiter.await_state_event(pid1, ProcessStateEnum.RUNNING)
pid2 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.WAITING)
# now demonstrate that the node itself is not full by launching
# a third process without a node_exclusive tag -- it should start
# immediately
process_target.node_exclusive = None
pid3 = self.pd_cli.create_process(self.process_definition_id)
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.RUNNING)
# finally, add a second node to the engine. pid2 should be started
# since there is an exclusive "abc" node free.
node2_id = uuid.uuid4().hex
self._send_node_state("engine1", node2_id)
self._start_eeagent(node2_id)
self.waiter.await_state_event(pid2, ProcessStateEnum.RUNNING)
# kill the processes for good
self.pd_cli.cancel_process(pid1)
self.waiter.await_state_event(pid1, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid2)
self.waiter.await_state_event(pid2, ProcessStateEnum.TERMINATED)
self.pd_cli.cancel_process(pid3)
self.waiter.await_state_event(pid3, ProcessStateEnum.TERMINATED)
def test_code_download(self):
# create a process definition that has no URL; only module and class.
process_definition_no_url = ProcessDefinition(
name='test_process_nodownload')
process_definition_no_url.executable = {
'module': 'ion.my.test.process',
'class': 'TestProcess'
}
process_definition_id_no_url = self.pd_cli.create_process_definition(
process_definition_no_url)
# create another that has a URL of the python file (this very file)
# verifies L4-CI-CEI-RQ114
url = "file://%s" % os.path.join(os.path.dirname(__file__),
'test_process_dispatcher.py')
process_definition = ProcessDefinition(name='test_process_download')
process_definition.executable = {
'module': 'ion.my.test.process',
'class': 'TestProcess',
'url': url
}
process_definition_id = self.pd_cli.create_process_definition(
process_definition)
process_target = ProcessTarget()
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
process_schedule.target = process_target
self.waiter.start()
# Test a module with no download fails
pid_no_url = self.pd_cli.create_process(process_definition_id_no_url)
self.pd_cli.schedule_process(process_definition_id_no_url,
process_schedule,
process_id=pid_no_url)
self.waiter.await_state_event(pid_no_url, ProcessStateEnum.FAILED)
# Test a module with a URL runs
pid = self.pd_cli.create_process(process_definition_id)
self.pd_cli.schedule_process(process_definition_id,
process_schedule,
process_id=pid)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
def _add_test_process(self, restart_mode=None):
process_schedule = ProcessSchedule()
if restart_mode is not None:
process_schedule.restart_mode = restart_mode
pid = self.pd_cli.create_process(self.process_definition_id)
pid_listen_name = "PDtestproc_%s" % uuid.uuid4().hex
config = {'process': {'listen_name': pid_listen_name}}
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
process_id=pid,
configuration=config)
client = TestClient(to_name=pid_listen_name)
return pid, client
def test_restart(self):
self.waiter.start()
restartable_pids = []
nonrestartable_pids = []
clients = {}
# start 10 processes with RestartMode.ALWAYS
for _ in range(10):
pid, client = self._add_test_process(ProcessRestartMode.ALWAYS)
restartable_pids.append(pid)
clients[pid] = client
# and 10 processes with RestartMode.ABNORMAL
for _ in range(10):
pid, client = self._add_test_process(ProcessRestartMode.ABNORMAL)
restartable_pids.append(pid)
clients[pid] = client
# and 10 with RestartMode.NEVER
for _ in range(10):
pid, client = self._add_test_process(ProcessRestartMode.NEVER)
nonrestartable_pids.append(pid)
clients[pid] = client
all_pids = restartable_pids + nonrestartable_pids
self.waiter.await_many_state_events(all_pids, ProcessStateEnum.RUNNING)
for pid in all_pids:
client = clients[pid]
self.assertFalse(client.is_restart())
self.assertEqual(client.count(), 1)
# now kill the whole eeagent and restart it. processes should
# show up as FAILED in the next heartbeat.
resource_id = self._eea_pid_to_resource_id[self._initial_eea_pid]
persistence_dir = self._eea_pid_to_persistence_dir[
self._initial_eea_pid]
log.debug("Restarting eeagent %s", self._initial_eea_pid)
self._kill_eeagent(self._initial_eea_pid)
# manually kill the processes to simulate a real container failure
for pid in all_pids:
self.container.terminate_process(pid)
self._start_eeagent(self.node1_id,
resource_id=resource_id,
persistence_dir=persistence_dir)
# wait for restartables to restart
self.waiter.await_many_state_events(restartable_pids,
ProcessStateEnum.RUNNING)
# query the processes again. it should have restart mode config
for pid in restartable_pids:
client = clients[pid]
self.assertTrue(client.is_restart())
self.assertEqual(client.count(), 1)
# meanwhile some procs should not have restarted
for pid in nonrestartable_pids:
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_state, ProcessStateEnum.FAILED)
# guard against extraneous events we were receiving as part of a bug:
# processes restarting again after they were already restarted
self.waiter.await_nothing(timeout=5)
def test_idempotency(self):
# ensure every operation can be safely retried
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
proc_name = 'myreallygoodname'
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start(pid)
# note: if we import UNSCHEDULED state into ProcessStateEnum,
# this assertion will need to change.
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_state, ProcessStateEnum.REQUESTED)
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
configuration={},
process_id=pid,
name=proc_name)
self.assertEqual(pid, pid2)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
# repeating schedule is harmless
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
configuration={},
process_id=pid,
name=proc_name)
self.assertEqual(pid, pid2)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, {})
self.assertEqual(proc.process_state, ProcessStateEnum.RUNNING)
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
# repeating cancel is harmless
self.pd_cli.cancel_process(pid)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, {})
self.assertEqual(proc.process_state, ProcessStateEnum.TERMINATED)
class ProcessDispatcherServiceIntTest(IonIntegrationTestCase):
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.rr_cli = ResourceRegistryServiceClient()
self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.process_definition = ProcessDefinition(name='test_process')
self.process_definition.executable = {
'module': 'ion.services.cei.test.test_process_dispatcher',
'class': 'TestProcess'
}
self.process_definition_id = self.pd_cli.create_process_definition(
self.process_definition)
self.waiter = ProcessStateWaiter()
def tearDown(self):
self.waiter.stop()
def test_create_schedule_cancel(self):
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
proc_name = 'myreallygoodname'
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start(pid)
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
configuration={},
process_id=pid,
name=proc_name)
self.assertEqual(pid, pid2)
# verifies L4-CI-CEI-RQ141 and L4-CI-CEI-RQ142
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, {})
self.assertEqual(proc.process_state, ProcessStateEnum.RUNNING)
# make sure process is readable directly from RR (mirrored)
# verifies L4-CI-CEI-RQ63
# verifies L4-CI-CEI-RQ64
proc = self.rr_cli.read(pid)
self.assertEqual(proc.process_id, pid)
# now try communicating with the process to make sure it is really running
test_client = TestClient()
for i in range(5):
self.assertEqual(i + 1, test_client.count(timeout=10))
# verifies L4-CI-CEI-RQ147
# check the process name was set in container
got_proc_name = test_client.get_process_name(pid=pid2)
self.assertEqual(proc_name, got_proc_name)
# kill the process and start it again
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
configuration={},
process_id=pid)
self.assertEqual(pid, pid2)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
for i in range(5):
self.assertEqual(i + 1, test_client.count(timeout=10))
# kill the process for good
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
def test_schedule_with_config(self):
process_schedule = ProcessSchedule()
process_schedule.queueing_mode = ProcessQueueingMode.ALWAYS
pid = self.pd_cli.create_process(self.process_definition_id)
self.waiter.start(pid)
# verifies L4-CI-CEI-RQ66
# feed in a string that the process will return -- verifies that
# configuration actually makes it to the instantiated process
test_response = uuid.uuid4().hex
configuration = {"test_response": test_response}
pid2 = self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
configuration=configuration,
process_id=pid)
self.assertEqual(pid, pid2)
self.waiter.await_state_event(pid, ProcessStateEnum.RUNNING)
test_client = TestClient()
# verifies L4-CI-CEI-RQ139
# assure that configuration block (which can contain inputs, outputs,
# and arbitrary config) 1) makes it to the process and 2) is returned
# in process queries
self.assertEqual(test_client.query(), test_response)
proc = self.pd_cli.read_process(pid)
self.assertEqual(proc.process_id, pid)
self.assertEqual(proc.process_configuration, configuration)
# kill the process for good
self.pd_cli.cancel_process(pid)
self.waiter.await_state_event(pid, ProcessStateEnum.TERMINATED)
def test_schedule_bad_config(self):
process_schedule = ProcessSchedule()
# a non-JSON-serializable IonObject
o = ProcessTarget()
with self.assertRaises(BadRequest) as ar:
self.pd_cli.schedule_process(self.process_definition_id,
process_schedule,
configuration={"bad": o})
self.assertTrue(ar.exception.message.startswith("bad configuration"))
def test_cancel_notfound(self):
with self.assertRaises(NotFound):
self.pd_cli.cancel_process("not-a-real-process-id")
def test_create_invalid_definition(self):
# create process definition missing module and class
# verifies L4-CI-CEI-RQ137
executable = dict(url="http://somewhere.com/something.py")
definition = ProcessDefinition(name="test_process",
executable=executable)
with self.assertRaises(BadRequest):
self.pd_cli.create_process_definition(definition)
class BaseHighAvailabilityAgentTest(IonIntegrationTestCase):
@needs_epu
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
#self.pd_cli = ProcessDispatcherServiceClient(node=self.container.node)
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition_name = 'test_haagent_%s' % self.process_definition_id
self.process_definition = ProcessDefinition(name=self.process_definition_name, executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition, self.process_definition_id)
service_definition = SERVICE_DEFINITION_TMPL % self.process_definition_name
sd = IonObject(RT.ServiceDefinition, {"name": self.process_definition_name,
"definition": service_definition})
self.service_def_id, _ = self.container.resource_registry.create(sd)
self.resource_id = "haagent_1234"
self._haa_name = "high_availability_agent"
self._haa_dashi_name = "dashi_haa_" + uuid4().hex
self._haa_dashi_uri = get_dashi_uri_from_cfg()
self._haa_dashi_exchange = "hatests"
self._haa_config = self._get_haagent_config()
self._base_services, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._spawn_haagent()
self._setup_haa_client()
def _get_haagent_config(self):
return {
'highavailability': {
'policy': {
'interval': 1,
'name': 'npreserving',
'parameters': {
'preserve_n': 0
}
},
'process_definition_id': self.process_definition_id,
'dashi_messaging': True,
'dashi_exchange': self._haa_dashi_exchange,
'dashi_name': self._haa_dashi_name
},
'agent': {'resource_id': self.resource_id},
}
def _setup_haa_client(self):
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def _spawn_haagent(self, policy_parameters=None):
config = deepcopy(self._haa_config)
if policy_parameters is not None:
config['highavailability']['policy']['parameters'] = policy_parameters
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=config)
def _kill_haagent(self):
self.container.terminate_process(self._haa_pid)
def tearDown(self):
new_policy = {'preserve_n': 0}
self.haa_client.reconfigure_policy(new_policy)
self.assertEqual(len(self.get_running_procs()), 0)
self.await_ha_state('STEADY')
self.waiter.stop()
try:
self._kill_haagent()
except BadRequest:
log.warning("Couldn't terminate HA Agent in teardown (May have been terminated by a test)")
self.container.resource_registry.delete(self.service_def_id, del_associations=True)
self._stop_container()
def get_running_procs(self):
"""returns a normalized set of running procs (removes the ones that
were there at setup time)
"""
base = self._base_procs
base_pids = [proc.process_id for proc in base]
current = self.pd_cli.list_processes()
current_pids = [proc.process_id for proc in current]
print "filtering base procs %s from %s" % (base_pids, current_pids)
normal = [cproc for cproc in current if cproc.process_id not in base_pids and cproc.process_state == ProcessStateEnum.RUNNING]
return normal
def get_new_services(self):
base = self._base_services
base_names = [i.name for i in base]
services_registered, _ = self.container.resource_registry.find_resources(
restype="Service", name=self.process_definition_name)
normal = [cserv for cserv in services_registered if cserv.name not in base_names]
return normal
def await_ha_state(self, want_state, timeout=20):
for i in range(0, timeout):
try:
status = self.haa_client.status().result
if status == want_state:
return
else:
procs = self.get_running_procs()
num_procs = len(procs)
log.debug("assert wants state %s, got state %s, with %s procs" % (want_state,status, num_procs))
except Exception:
log.exception("Problem getting HA status, trying again...")
gevent.sleep(1)
raise Exception("Took more than %s to get to ha state %s" % (timeout, want_state))
def await_pyon_ha_state(self, want_state, timeout=20):
for i in range(0, timeout):
try:
result = self.haa_client.dump().result
service_id = result.get('service_id')
service = self.container.resource_registry.read(service_id)
if service.state == want_state:
return
else:
log.debug("want state %s, got state %s") % (want_state, service.state)
except Exception:
log.exception("Problem getting HA status, trying again...")
gevent.sleep(1)
raise Exception("Took more than %s to get to pyon ha state %s" % (timeout, want_state))
class HighAvailabilityAgentSensorPolicyTest(IonIntegrationTestCase):
def _start_webserver(self, port=None):
""" Start a webserver for testing code download
Note: tries really hard to get a port, and if it can't use
the suggested port, randomly picks another, and returns it
"""
def log_message(self, format, *args):
#swallow log massages
pass
class TestRequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):
server_version = 'test_server'
extensions_map = ''
def do_GET(self):
self.send_response(200)
self.send_header("Content-type", "text/plain")
self.send_header("Content-Length", len(self.server.response))
self.end_headers()
self.wfile.write(self.server.response)
class Server(HTTPServer):
response = ''
def serve_forever(self):
self._serving = 1
while self._serving:
self.handle_request()
def stop(self):
self._serving = 0
if port is None:
port = 8008
Handler = TestRequestHandler
Handler.log_message = log_message
for i in range(0, 100):
try:
self._webserver = Server(("localhost", port), Handler)
except socket.error:
print "port %s is in use, picking another" % port
port = randint(8000, 10000)
continue
else:
break
self._web_glet = gevent.spawn(self._webserver.serve_forever)
return port
def _stop_webserver(self):
if self._webserver is not None:
self._webserver.stop()
gevent.sleep(2)
self._web_glet.kill()
@needs_epu
def setUp(self):
self._start_container()
self.container.start_rel_from_url('res/deploy/r2cei.yml')
self.pd_cli = ProcessDispatcherServiceClient(to_name="process_dispatcher")
self.process_definition_id = uuid4().hex
self.process_definition = ProcessDefinition(name='test', executable={
'module': 'ion.agents.cei.test.test_haagent',
'class': 'TestProcess'
})
self.pd_cli.create_process_definition(self.process_definition,
self.process_definition_id)
http_port = 8919
http_port = self._start_webserver(port=http_port)
self.resource_id = "haagent_4567"
self._haa_name = "high_availability_agent"
self._haa_config = {
'highavailability': {
'policy': {
'interval': 1,
'name': 'sensor',
'parameters': {
'metric': 'app_attributes:ml',
'sample_period': 600,
'sample_function': 'Average',
'cooldown_period': 20,
'scale_up_threshold': 2.0,
'scale_up_n_processes': 1,
'scale_down_threshold': 1.0,
'scale_down_n_processes': 1,
'maximum_processes': 5,
'minimum_processes': 1,
}
},
'aggregator': {
'type': 'trafficsentinel',
'host': 'localhost',
'port': http_port,
'protocol': 'http',
'username': '******',
'password': '******'
},
'process_definition_id': self.process_definition_id,
"process_dispatchers": [
'process_dispatcher'
]
},
'agent': {'resource_id': self.resource_id},
}
self._base_procs = self.pd_cli.list_processes()
self.waiter = ProcessStateWaiter()
self.waiter.start()
self.container_client = ContainerAgentClient(node=self.container.node,
name=self.container.name)
self._haa_pid = self.container_client.spawn_process(name=self._haa_name,
module="ion.agents.cei.high_availability_agent",
cls="HighAvailabilityAgent", config=self._haa_config)
# Start a resource agent client to talk with the instrument agent.
self._haa_pyon_client = SimpleResourceAgentClient(self.resource_id, process=FakeProcess())
log.info('Got haa client %s.', str(self._haa_pyon_client))
self.haa_client = HighAvailabilityAgentClient(self._haa_pyon_client)
def tearDown(self):
self.waiter.stop()
self.container.terminate_process(self._haa_pid)
self._stop_webserver()
self._stop_container()
def get_running_procs(self):
"""returns a normalized set of running procs (removes the ones that
were there at setup time)
"""
base = self._base_procs
base_pids = [proc.process_id for proc in base]
current = self.pd_cli.list_processes()
current_pids = [proc.process_id for proc in current]
print "filtering base procs %s from %s" % (base_pids, current_pids)
normal = [cproc for cproc in current if cproc.process_id not in base_pids and cproc.process_state == ProcessStateEnum.RUNNING]
return normal
def _get_managed_upids(self):
result = self.haa_client.dump().result
upids = result['managed_upids']
return upids
def _set_response(self, response):
self._webserver.response = response
def test_sensor_policy(self):
status = self.haa_client.status().result
# Ensure HA hasn't already failed
assert status in ('PENDING', 'READY', 'STEADY')
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 1)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, 'STEADY')
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
# Set ml for each proc such that we scale up
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "%s,ml=5\n"
self._set_response(response)
self.waiter.await_state_event(state=ProcessStateEnum.RUNNING)
self.assertEqual(len(self.get_running_procs()), 2)
# Set ml so we stay steady
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "%s,ml=1.5\n"
self._set_response(response)
self.assertEqual(len(self.get_running_procs()), 2)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, 'STEADY')
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
# Set ml so we scale down
upids = self._get_managed_upids()
response = ""
for upid in upids:
response += "%s,ml=0.5\n"
self._set_response(response)
self.waiter.await_state_event(state=ProcessStateEnum.TERMINATED)
self.assertEqual(len(self.get_running_procs()), 1)
for i in range(0, 5):
status = self.haa_client.status().result
try:
self.assertEqual(status, 'STEADY')
break
except:
gevent.sleep(1)
else:
assert False, "HA Service took too long to get to state STEADY"
