def subscriber(port, topic, connect_port):
nodes[port] = dps.create_node("/", key_store, None)
dps.start_node(nodes[port], 0, port)
subs[port] = dps.create_subscription(nodes[port], [topic])
dps.subscribe(subs[port], on_pub)
if (connect_port != 0):
addr = dps.create_address()
ret = dps.link_to(nodes[port], None, connect_port, addr)
if (ret == dps.OK):
print "Linked %d to %d" % (port, connect_port)
dps.destroy_address(addr)
def subscriber(topic, connect_port):
node = dps.create_node("/", key_store, None)
dps.start_node(node, 0, 0)
print "Subscriber is listening on port %d" % dps.get_port_number(node)
sub = dps.create_subscription(node, [topic])
dps.subscribe(sub, on_pub)
if (connect_port != 0):
addr = dps.create_address()
ret = dps.link_to(node, None, connect_port, addr)
if (ret == dps.OK):
print "Linked %d to %d" % (dps.get_port_number(node), connect_port)
dps.destroy_address(addr)
return node
def subscriber(topic, remote_listen_addr):
node = dps.create_node("/", key_store, None)
dps.start_node(node, 0, None)
print("Subscriber is listening on %s" % dps.get_listen_address(node))
sub = dps.create_subscription(node, [topic])
dps.subscribe(sub, on_pub)
if remote_listen_addr != None:
event.clear()
ret = dps.link(node, str(remote_listen_addr), on_link)
if ret == dps.OK:
event.wait()
nodes.append(node)
return node
node_id = publisher_id
pub_key_id = subscriber_id
def on_ack(pub, payload):
print "Ack for pub UUID %s(%d)" % (dps.publication_get_uuid(pub),
dps.publication_get_sequence_num(pub))
print " %s" % (payload)
def on_destroy(node):
print "Destroyed"
dps.destroy_key_store(key_store)
node = dps.create_node("/", key_store, node_id)
dps.start_node(node, dps.MCAST_PUB_ENABLE_SEND, 0)
pub = dps.create_publication(node)
dps.init_publication(pub, ['a/b/c'], False, None, on_ack)
dps.publication_add_sub_id(pub, pub_key_id)
dps.publish(pub, "hello")
print "Pub UUID %s(%d)" % (dps.publication_get_uuid(pub),
dps.publication_get_sequence_num(pub))
time.sleep(0.2)
dps.publish(pub, "world")
print "Pub UUID %s(%d)" % (dps.publication_get_uuid(pub),
dps.publication_get_sequence_num(pub))
time.sleep(0.2)
dps.destroy_publication(pub)
print(" sub " + " | ".join(dps.subscription_get_topics(sub)))
print(payload.tobytes())
if dps.publication_is_ack_requested(pub):
ack_msg = "This is an ACK from %s" % (dps.get_listen_address(dps.publication_get_node(pub)))
print("Sending ack for pub UUID %s(%d)" % (dps.publication_get_uuid(pub), dps.publication_get_sequence_num(pub)))
print(" %s" % (ack_msg))
dps.ack_publication(pub, ack_msg);
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("-d", "--debug", action='store_true',
help="Enable debug ouput if built for debug.")
args = parser.parse_args()
dps.cvar.debug = args.debug
node = dps.create_node("/")
dps.start_node(node, dps.MCAST_PUB_ENABLE_RECV + dps.MCAST_PUB_ENABLE_SEND, None)
print("Subscriber is listening on %s" % (dps.get_listen_address(node)))
sub = dps.create_subscription(node, ['a/b/c']);
dps.subscribe(sub, on_pub)
time.sleep(1)
# Let publishers know we are here
pub = dps.create_publication(node)
dps.init_publication(pub, ['new_subscriber'], False)
dps.publish(pub, "Hi")
if not sys.flags.interactive:
while True:
time.sleep(1)
