def add_listener(self, url, event_type):
assert event_type in EventInfo.EVENT_TYPES
url_dict = self._listeners[event_type]
if not url in url_dict:
url_dict[url] = ntplib.system_to_ntp_time(time.time())
log.trace("added listener=%s for event_type=%s", url, event_type)
return url_dict[url]
def add_listener(self, url, event_type):
assert event_type in EventInfo.EVENT_TYPES
url_dict = self._listeners[event_type]
if not url in url_dict:
url_dict[url] = ntplib.system_to_ntp_time(time.time())
log.trace("added listener=%s for event_type=%s", url, event_type)
return url_dict[url]
def _run(self):
sleep(3) # wait a bit before first event
while self._keep_running:
self.generate_and_notify_event()
# sleep for a few secs regularly checking we still are running
secs = 7
while self._keep_running and secs > 0:
sleep(0.3)
secs -= 0.3
log.trace("event generation stopped.")
def _run(self):
sleep(3) # wait a bit before first event
while self._keep_running:
self.generate_and_notify_event()
# sleep for a few secs regularly checking we still are running
secs = 7
while self._keep_running and secs > 0:
sleep(0.3)
secs -= 0.3
log.trace("event generation stopped.")
def remove_listener(self, url, event_type):
assert event_type in EventInfo.EVENT_TYPES
url_dict = self._listeners[event_type]
unreg_time = 0
if url in url_dict:
unreg_time = ntplib.system_to_ntp_time(time.time())
del url_dict[url]
log.trace("removed listener=%s for event_type=%s", url, event_type)
return unreg_time
def remove_listener(self, url, event_type):
assert event_type in EventInfo.EVENT_TYPES
url_dict = self._listeners[event_type]
unreg_time = 0
if url in url_dict:
unreg_time = ntplib.system_to_ntp_time(time.time())
del url_dict[url]
log.trace("removed listener=%s for event_type=%s", url, event_type)
return unreg_time
def _notify_listener(self, url, event_instance):
"""
Notifies event to given listener.
"""
if url == "http://NO_OMS_NOTIFICATIONS": # pragma: no cover
# developer convenience -see ion.agents.platform.rsn.oms_event_listener
return
log.debug("Notifying event_instance=%s to listener=%s", str(event_instance), url)
# include url in event instance for diagnostic/debugging purposes:
event_instance['listener_url'] = url
# prepare payload (JSON format):
payload = json.dumps(event_instance, indent=2)
log.trace("payload=\n%s", payload)
headers = {
"Content-type": "application/json",
"Accept": "text/plain"
}
conn = None
try:
o = urlparse(url)
url4conn = o.netloc
path = o.path
conn = httplib.HTTPConnection(url4conn)
conn.request("POST", path, body=payload, headers=headers)
response = conn.getresponse()
data = response.read()
log.trace("RESPONSE: %s, %s, %s", response.status, response.reason, data)
except Exception as e:
# the actual listener is no longer there; just log a message
log.warn("event notification HTTP request failed: %r: %s", url, e)
finally:
if conn:
conn.close()
def _notify_listener(self, url, event_instance):
"""
Notifies event to given listener.
"""
if url == "http://NO_OMS_NOTIFICATIONS": # pragma: no cover
# developer convenience -see ion.agents.platform.rsn.oms_event_listener
return
log.debug("Notifying event_instance=%s to listener=%s",
str(event_instance), url)
# include url in event instance for diagnostic/debugging purposes:
event_instance['listener_url'] = url
# prepare payload (JSON format):
payload = json.dumps(event_instance, indent=2)
log.trace("payload=\n%s", payload)
headers = {"Content-type": "application/json", "Accept": "text/plain"}
conn = None
try:
o = urlparse(url)
url4conn = o.netloc
path = o.path
conn = httplib.HTTPConnection(url4conn)
conn.request("POST", path, body=payload, headers=headers)
response = conn.getresponse()
data = response.read()
log.trace("RESPONSE: %s, %s, %s", response.status, response.reason,
data)
except Exception as e:
# the actual listener is no longer there; just log a message
log.warn("event notification HTTP request failed: %r: %s", url, e)
finally:
if conn:
conn.close()
break
except zmq.ZMQError:
# Socket not ready to accept send. Sleep and retry later.
time.sleep(.5)
delta = time.time() - start_send
if delta >= driver_timeout:
raise InstDriverClientTimeoutError()
except Exception, e:
log.error('Driver client error writing to zmq socket: ' +
str(e))
log.error('Driver client error type: ' + str(type(e)))
raise SystemError('exception writing to zmq socket: ' + str(e))
log.trace('Awaiting reply.')
start_reply = time.time()
while True:
try:
# Attempt reply recv. Retry if necessary.
reply = self.zmq_cmd_socket.recv_pyobj(flags=zmq.NOBLOCK)
# Reply recieved, break and return.
break
except zmq.ZMQError:
# Socket not ready with the reply. Sleep and retry later.
time.sleep(.5)
delta = time.time() - start_reply
if delta >= driver_timeout:
raise InstDriverClientTimeoutError()
except Exception, e:
def stop(self):
log.trace("stopping event generation...")
self._keep_running = False
# Command sent, break out and wait for reply.
break
except zmq.ZMQError:
# Socket not ready to accept send. Sleep and retry later.
time.sleep(.5)
delta = time.time() - start_send
if delta >= driver_timeout:
raise InstDriverClientTimeoutError()
except Exception,e:
log.error('Driver client error writing to zmq socket: ' + str(e))
log.error('Driver client error type: ' + str(type(e)))
raise SystemError('exception writing to zmq socket: ' + str(e))
log.trace('Awaiting reply.')
start_reply = time.time()
while True:
try:
# Attempt reply recv. Retry if necessary.
reply = self.zmq_cmd_socket.recv_pyobj(flags=zmq.NOBLOCK)
# Reply recieved, break and return.
break
except zmq.ZMQError:
# Socket not ready with the reply. Sleep and retry later.
time.sleep(.5)
delta = time.time() - start_reply
if delta >= driver_timeout:
raise InstDriverClientTimeoutError()
except Exception,e:
def stop(self):
log.trace("stopping event generation...")
self._keep_running = False