class MirrorStreamer(Thread):
"""Act as a relay...
"""
def __init__(self, holder, configfile):
Thread.__init__(self)
self.scanlines = holder
cfg = ConfigParser()
cfg.read(configfile)
host = cfg.get("local_reception", "mirror")
hostname = cfg.get(host, "hostname")
port = cfg.get(host, "pubport")
rport = cfg.get(host, "reqport")
address = "tcp://" + hostname + ":" + port
self._sub = Subscriber([address], "hrpt 0")
self._reqaddr = "tcp://" + hostname + ":" + rport
def run(self):
for message in self._sub.recv(1):
if message is None:
continue
if(message.type == "have"):
logger.debug("Relaying " + str(message.data["timecode"]))
self.scanlines.add_scanline(message.data["satellite"],
strp_isoformat(message.data["timecode"]),
message.data["elevation"],
None,
self._reqaddr)
def stop(self):
"""Stop streaming.
"""
self._sub.stop()
class Listener(object):
'''PyTroll listener class for reading messages for Trollduction
'''
def __init__(self, address_list=None, msg_type_list=None,
ip=None, port=None, pipe=None):
'''Init Listener object
'''
self.address_list = []
self.add_address_list(address_list)
self.add_address(ip, port)
self.msg_type_list = []
if msg_type_list is not None:
self.msg_type_list = msg_type_list
self.deque = deque()
self.pipe = pipe
self.subscriber = None
self.create_subscriber()
self.running = False
def add_address(self, ip, port):
'''Add address that will be listened
'''
if ip is not None and port is not None:
self.address_list.append('tcp://'+ip+':%04d' % port)
def add_address_list(self, address_list):
'''Add a list of addresses that will be listened
'''
for address in address_list:
self.address_list.append(address)
def create_subscriber(self):
'''Create a subscriber instance using specified addresses and
message types.
'''
if self.subscriber is None:
if len(self.address_list) > 0:
if len(self.msg_type_list) > 0:
self.subscriber = Subscriber(self.address_list,
*self.msg_type_list)
def send_to_pipe(self, msg):
'''Send message to parent via a Pipe()
'''
self.pipe.send(msg)
def run(self):
'''Run listener
'''
# TODO: add logging
print "Starting Listener"
self.running = True
for msg in self.subscriber.recv():
print "New message received"
if msg.subject == '/stop_listener':
break
if self.pipe is None:
self.deque.append(msg)
else:
while len(self.deque) > 0:
self.send_to_pipe(self.deque.popleft())
self.send_to_pipe(msg)
def stop(self):
'''Stop subscriber and delete the instance
'''
# TODO: add logging
self.subscriber.stop()
self.subscriber.close()
self.subscriber = None
self.running = False
def restart(self):
'''Restart subscriber
'''
self.stop()
self.create_subscriber()
self.run()
class Listener(object):
'''PyTroll listener class for reading messages for Trollduction
'''
def __init__(self,
address_list=None,
msg_type_list=None,
ip=None,
port=None,
pipe=None):
'''Init Listener object
'''
self.address_list = []
self.add_address_list(address_list)
self.add_address(ip, port)
self.msg_type_list = []
if msg_type_list is not None:
self.msg_type_list = msg_type_list
self.deque = deque()
self.pipe = pipe
self.subscriber = None
self.create_subscriber()
self.running = False
def add_address(self, ip, port):
'''Add address that will be listened
'''
if ip is not None and port is not None:
self.address_list.append('tcp://' + ip + ':%04d' % port)
def add_address_list(self, address_list):
'''Add a list of addresses that will be listened
'''
for address in address_list:
self.address_list.append(address)
def create_subscriber(self):
'''Create a subscriber instance using specified addresses and
message types.
'''
if self.subscriber is None:
if len(self.address_list) > 0:
if len(self.msg_type_list) > 0:
self.subscriber = Subscriber(self.address_list,
*self.msg_type_list)
def send_to_pipe(self, msg):
'''Send message to parent via a Pipe()
'''
self.pipe.send(msg)
def run(self):
'''Run listener
'''
# TODO: add logging
print "Starting Listener"
self.running = True
for msg in self.subscriber.recv():
print "New message received"
if msg.subject == '/stop_listener':
break
if self.pipe is None:
self.deque.append(msg)
else:
while len(self.deque) > 0:
self.send_to_pipe(self.deque.popleft())
self.send_to_pipe(msg)
def stop(self):
'''Stop subscriber and delete the instance
'''
# TODO: add logging
self.subscriber.stop()
self.subscriber.close()
self.subscriber = None
self.running = False
def restart(self):
'''Restart subscriber
'''
self.stop()
self.create_subscriber()
self.run()
