/
nameserver.py
64 lines (50 loc) · 1.87 KB
/
nameserver.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2011, 2012 SMHI
# Author(s):
# Martin Raspaud <martin.raspaud@smhi.se>
# This program 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 of the License, or
# (at your option) any later version.
# This program 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 program. If not, see <http://www.gnu.org/licenses/>.
"""Manage other's subscriptions.
"""
from posttroll.connections import GenericConnections
from posttroll.message import Message
import zmq
def get_address(data_type, gc):
"""Get the address of the module for a given *data_type*.
"""
if data_type == "":
return Message("/oper/ns", "info", gc.get_addresses())
# a tuple should be returned...
for addr in gc.get_addresses():
if data_type in addr["type"]:
return Message("/oper/ns", "info", addr)
return Message("/oper/ns", "info", "")
if __name__ == '__main__':
GC = GenericConnections("")
GC.start()
port = 5555
try:
context = zmq.Context()
listener = context.socket(zmq.REP)
listener.bind("tcp://*:"+str(port))
while True:
m = listener.recv()
print m
msg = Message.decode(m)
listener.send_unicode(str(get_address(msg.data["type"], GC)))
except KeyboardInterrupt:
# this is needed for the reception to be interruptible
pass
finally:
print "terminating nameserver..."
GC.stop()
listener.close()