def emit_info(self, channel, info, wrap_in_list):
# info can be a list (e.g. for leases)
# or a dict, with or without an 'id' field
if self.debug:
msg = "len={}".format(len(info)) if isinstance(info, list) \
else "id={}".format(info.get('id', '[none]'))
logger.info("{} emitting {} -> {}"
.format(channel, msg, info))
# wrap info as single elt in a list
if wrap_in_list:
info = [ info ]
message = json.dumps(info)
if self.socketio is None:
self.connect()
try:
self.socketio.emit(channel, message,
ReconnectableSocketIO.callback)
self.counters.setdefault(channel, 0)
self.counters[channel] += 1
except Exception as e:
# make sure we reconnect later on
self.socketio = None
label = "{}: {}".format(info.get('id', 'none'), one_char_summary(info))
logger.warn("Dropped message on {} - channel {} - msg {}"
.format(self, channel, label))
logger.exception("Dropped because of this exception")
def connect(self):
action = "connect" if self.socketio is None else "reconnect"
try:
logger.info("{}ing to {}".format(action, self))
self.socketio = SocketIO(self.hostname, self.port, LoggingNamespace)
channel = back_channel
def closure(*args):
return self.on_channel(channel, *args)
self.socketio.on(channel, closure)
except:
logger.warn("Connection lost to {}".format(self))
self.socketio = None