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"""A test that publishes NumPy arrays.
Uses REQ/REP (on PUB/SUB socket + 1) to synchronize
"""
#-----------------------------------------------------------------------------
# Copyright (c) 2010 Brian Granger
#
# Distributed under the terms of the New BSD License. The full license is in
# the file COPYING.BSD, distributed as part of this software.
#-----------------------------------------------------------------------------
import sys
import time
import zmq
import numpy
def sync(bind_to):
# use bind socket + 1
sync_with = ':'.join(bind_to.split(':')[:-1] +
[str(int(bind_to.split(':')[-1]) + 1)])
ctx = zmq.Context.instance()
s = ctx.socket(zmq.REP)
s.bind(sync_with)
print "Waiting for subscriber to connect..."
s.recv()
print " Done."
s.send('GO')
def main():
if len (sys.argv) != 4:
print 'usage: publisher <bind-to> <array-size> <array-count>'
sys.exit (1)
try:
bind_to = sys.argv[1]
array_size = int(sys.argv[2])
array_count = int (sys.argv[3])
except (ValueError, OverflowError), e:
print 'array-size and array-count must be integers'
sys.exit (1)
ctx = zmq.Context()
s = ctx.socket(zmq.PUB)
s.bind(bind_to)
sync(bind_to)
print "Sending arrays..."
for i in range(array_count):
a = numpy.random.rand(array_size, array_size)
s.send_pyobj(a)
print " Done."
if __name__ == "__main__":
main()
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