class EPUAgentCoreTests(unittest.TestCase):
def setUp(self):
self.sup = FakeSupervisor()
self.core = EPUAgentCore(NODE_ID, supervisor=self.sup)
def assertBasics(self, state, expected="OK"):
self.assertEqual(NODE_ID, state['node_id'])
self.assertTrue(state['timestamp'])
self.assertEqual(expected, state['state'])
def test_supervisor_error(self):
self.sup.error = SupervisorError('faaaaaaaail')
state = self.core.get_state()
self.assertBasics(state, "MONITOR_ERROR")
self.assertTrue('faaaaaaaail' in state['error'])
def test_series(self):
self.sup.processes = [
_one_process(ProcessStates.RUNNING),
_one_process(ProcessStates.RUNNING)
]
state = self.core.get_state()
self.assertBasics(state)
# mark one of the processes as failed and give it a fake logfile
# to read and send back
fail = self.sup.processes[1]
fail['state'] = ProcessStates.FATAL
fail['exitstatus'] = -1
stderr = "this is the errros!"
err_path = _write_tempfile(stderr)
fail['stderr_logfile'] = err_path
try:
state = self.core.get_state()
finally:
os.unlink(err_path)
self.assertBasics(state, "PROCESS_ERROR")
failed_processes = state['failed_processes']
self.assertEqual(1, len(failed_processes))
failed = failed_processes[0]
self.assertEqual(stderr, failed['stderr'])
# next time around process should still be failed but no stderr
state = self.core.get_state()
self.assertBasics(state, "PROCESS_ERROR")
failed_processes = state['failed_processes']
self.assertEqual(1, len(failed_processes))
failed = failed_processes[0]
self.assertFalse(failed.get('stderr'))
# make it all ok again
fail['state'] = ProcessStates.RUNNING
state = self.core.get_state()
self.assertBasics(state)
class EPUAgentCoreTests(unittest.TestCase):
def setUp(self):
self.sup = FakeSupervisor()
self.core = EPUAgentCore(NODE_ID, supervisor=self.sup)
def assertBasics(self, state, expected="OK"):
self.assertEqual(NODE_ID, state['node_id'])
self.assertTrue(state['timestamp'])
self.assertEqual(expected, state['state'])
def test_supervisor_error(self):
self.sup.error = SupervisorError('faaaaaaaail')
state = self.core.get_state()
self.assertBasics(state, "MONITOR_ERROR")
self.assertTrue('faaaaaaaail' in state['error'])
def test_series(self):
self.sup.processes = [_one_process(ProcessStates.RUNNING),
_one_process(ProcessStates.RUNNING)]
state = self.core.get_state()
self.assertBasics(state)
# mark one of the processes as failed and give it a fake logfile
# to read and send back
fail = self.sup.processes[1]
fail['state'] = ProcessStates.FATAL
fail['exitstatus'] = -1
stderr = "this is the errros!"
err_path = _write_tempfile(stderr)
fail['stderr_logfile'] = err_path
try:
state = self.core.get_state()
finally:
os.unlink(err_path)
self.assertBasics(state, "PROCESS_ERROR")
failed_processes = state['failed_processes']
self.assertEqual(1, len(failed_processes))
failed = failed_processes[0]
self.assertEqual(stderr, failed['stderr'])
# next time around process should still be failed but no stderr
state = self.core.get_state()
self.assertBasics(state, "PROCESS_ERROR")
failed_processes = state['failed_processes']
self.assertEqual(1, len(failed_processes))
failed = failed_processes[0]
self.assertFalse(failed.get('stderr'))
# make it all ok again
fail['state'] = ProcessStates.RUNNING
state = self.core.get_state()
self.assertBasics(state)
def __init__(self, *args, **kwargs):
configs = ["epuagent"]
config_files = get_config_paths(configs)
self.CFG = bootstrap.configure(config_files)
topic = self.CFG.epuagent.get('service_name')
self.topic = topic or "epu_agent_%s" % uuid.uuid4()
heartbeat_dest = kwargs.get('heartbeat_dest')
self.heartbeat_dest = heartbeat_dest or self.CFG.epuagent.heartbeat_dest
node_id = kwargs.get('node_id')
self.node_id = node_id or self.CFG.epuagent.node_id
heartbeat_op = kwargs.get('heartbeat_op')
self.heartbeat_op = heartbeat_op or self.CFG.epuagent.heartbeat_op
period = kwargs.get('period_seconds')
self.period = float(period or self.CFG.epuagent.period_seconds)
# for testing, allow for not starting heartbeat automatically
self.start_beat = kwargs.get('start_heartbeat', True)
amqp_uri = kwargs.get('amqp_uri')
sock = kwargs.get('supervisor_socket')
sock = sock or self.CFG.epuagent.get('supervisor_socket')
if sock:
log.debug("monitoring a process supervisor at: %s", sock)
self.supervisor = Supervisor(sock)
else:
log.debug("not monitoring process supervisor")
self.supervisor = None
self.core = EPUAgentCore(self.node_id, supervisor=self.supervisor)
self.dashi = bootstrap.dashi_connect(self.topic, self.CFG, amqp_uri)
def __init__(self, *args, **kwargs):
configs = ["epuagent"]
config_files = get_config_paths(configs)
self.CFG = bootstrap.configure(config_files)
topic = self.CFG.epuagent.get('service_name')
self.topic = topic or "epu_agent_%s" % uuid.uuid4()
heartbeat_dest = kwargs.get('heartbeat_dest')
self.heartbeat_dest = heartbeat_dest or self.CFG.epuagent.heartbeat_dest
node_id = kwargs.get('node_id')
self.node_id = node_id or self.CFG.epuagent.node_id
heartbeat_op = kwargs.get('heartbeat_op')
self.heartbeat_op = heartbeat_op or self.CFG.epuagent.heartbeat_op
period = kwargs.get('period_seconds')
self.period = float(period or self.CFG.epuagent.period_seconds)
# for testing, allow for not starting heartbeat automatically
self.start_beat = kwargs.get('start_heartbeat', True)
amqp_uri = kwargs.get('amqp_uri')
sock = kwargs.get('supervisor_socket')
sock = sock or self.CFG.epuagent.get('supervisor_socket')
if sock:
log.debug("monitoring a process supervisor at: %s", sock)
self.supervisor = Supervisor(sock)
else:
log.debug("not monitoring process supervisor")
self.supervisor = None
self.core = EPUAgentCore(self.node_id, supervisor=self.supervisor)
self.dashi = bootstrap.dashi_connect(self.topic, self.CFG, amqp_uri)
class EPUAgent(object):
"""Elastic Process Unit (EPU) Agent. Monitors vitals in running VMs.
"""
def __init__(self, *args, **kwargs):
configs = ["epuagent"]
config_files = get_config_paths(configs)
self.CFG = bootstrap.configure(config_files)
topic = self.CFG.epuagent.get('service_name')
self.topic = topic or "epu_agent_%s" % uuid.uuid4()
heartbeat_dest = kwargs.get('heartbeat_dest')
self.heartbeat_dest = heartbeat_dest or self.CFG.epuagent.heartbeat_dest
node_id = kwargs.get('node_id')
self.node_id = node_id or self.CFG.epuagent.node_id
heartbeat_op = kwargs.get('heartbeat_op')
self.heartbeat_op = heartbeat_op or self.CFG.epuagent.heartbeat_op
period = kwargs.get('period_seconds')
self.period = float(period or self.CFG.epuagent.period_seconds)
# for testing, allow for not starting heartbeat automatically
self.start_beat = kwargs.get('start_heartbeat', True)
amqp_uri = kwargs.get('amqp_uri')
sock = kwargs.get('supervisor_socket')
sock = sock or self.CFG.epuagent.get('supervisor_socket')
if sock:
log.debug("monitoring a process supervisor at: %s", sock)
self.supervisor = Supervisor(sock)
else:
log.debug("not monitoring process supervisor")
self.supervisor = None
self.core = EPUAgentCore(self.node_id, supervisor=self.supervisor)
self.dashi = bootstrap.dashi_connect(self.topic, self.CFG, amqp_uri)
def start(self):
log.info('EPUAgent starting')
self.dashi.handle(self.heartbeat)
self.loop = LoopingCall(self._loop)
if self.start_beat:
log.debug('Starting heartbeat loop - %s second interval',
self.period)
self.loop.start(self.period)
try:
self.dashi.consume()
except KeyboardInterrupt:
log.warning("Caught terminate signal. Exiting")
else:
log.info("Exiting normally.")
def _loop(self):
return self.heartbeat()
def heartbeat(self):
try:
state = self.core.get_state()
self.dashi.fire(self.heartbeat_dest,
self.heartbeat_op,
heartbeat=state)
except Exception, e:
# unhandled exceptions will terminate the LoopingCall
log.error('Error heartbeating: %s', e, exc_info=True)
def setUp(self):
self.sup = FakeSupervisor()
self.core = EPUAgentCore(NODE_ID, supervisor=self.sup)
class EPUAgent(object):
"""Elastic Process Unit (EPU) Agent. Monitors vitals in running VMs.
"""
def __init__(self, *args, **kwargs):
configs = ["epuagent"]
config_files = get_config_paths(configs)
self.CFG = bootstrap.configure(config_files)
topic = self.CFG.epuagent.get('service_name')
self.topic = topic or "epu_agent_%s" % uuid.uuid4()
heartbeat_dest = kwargs.get('heartbeat_dest')
self.heartbeat_dest = heartbeat_dest or self.CFG.epuagent.heartbeat_dest
node_id = kwargs.get('node_id')
self.node_id = node_id or self.CFG.epuagent.node_id
heartbeat_op = kwargs.get('heartbeat_op')
self.heartbeat_op = heartbeat_op or self.CFG.epuagent.heartbeat_op
period = kwargs.get('period_seconds')
self.period = float(period or self.CFG.epuagent.period_seconds)
# for testing, allow for not starting heartbeat automatically
self.start_beat = kwargs.get('start_heartbeat', True)
amqp_uri = kwargs.get('amqp_uri')
sock = kwargs.get('supervisor_socket')
sock = sock or self.CFG.epuagent.get('supervisor_socket')
if sock:
log.debug("monitoring a process supervisor at: %s", sock)
self.supervisor = Supervisor(sock)
else:
log.debug("not monitoring process supervisor")
self.supervisor = None
self.core = EPUAgentCore(self.node_id, supervisor=self.supervisor)
self.dashi = bootstrap.dashi_connect(self.topic, self.CFG, amqp_uri)
def start(self):
log.info('EPUAgent starting')
self.dashi.handle(self.heartbeat)
self.loop = LoopingCall(self._loop)
if self.start_beat:
log.debug('Starting heartbeat loop - %s second interval', self.period)
self.loop.start(self.period)
try:
self.dashi.consume()
except KeyboardInterrupt:
log.warning("Caught terminate signal. Exiting")
else:
log.info("Exiting normally.")
def _loop(self):
return self.heartbeat()
def heartbeat(self):
try:
state = self.core.get_state()
self.dashi.fire(self.heartbeat_dest, self.heartbeat_op,
heartbeat=state)
except Exception, e:
# unhandled exceptions will terminate the LoopingCall
log.error('Error heartbeating: %s', e, exc_info=True)
def setUp(self):
self.sup = FakeSupervisor()
self.core = EPUAgentCore(NODE_ID, supervisor=self.sup)
