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#
# Copyright 2013 Free Software Foundation, Inc.
#
# This file is part of GNU Radio.
#
# This is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3, or (at your option)
# any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this software; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
import zmq
import threading
import numpy
class probe_manager():
def __init__(self):
self.zmq_context = zmq.Context()
self.poller = zmq.Poller()
self.interfaces = []
def add_socket(self, address, data_type, callback_func):
socket = self.zmq_context.socket(zmq.SUB)
socket.setsockopt(zmq.SUBSCRIBE, "")
socket.connect(address)
# use a tuple to store interface elements
self.interfaces.append((socket, data_type, callback_func))
self.poller.register(socket, zmq.POLLIN)
def watcher(self):
poll = dict(self.poller.poll(0))
for i in self.interfaces:
# i = (socket, data_type, callback_func)
if poll.get(i[0]) == zmq.POLLIN:
# receive data
msg_packed = i[0].recv()
# use numpy to unpack the data
msg_unpacked = numpy.fromstring(msg_packed, numpy.dtype(i[1]))
# invoke callback function
i[2](msg_unpacked)
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