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Graceful Shutdown & De-Reg. Handling

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This commit is contained in:
Cort Buffington 2014-05-17 13:18:45 -05:00
parent ee96c6752e
commit d6c22c4721
1 changed files with 24 additions and 1 deletions
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25
dmrlink.py
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@ -21,6 +21,7 @@ import csv
import os
import logging
import time
import signal
from logging.config import dictConfig
from hmac import new as hmac_new
@ -451,7 +452,7 @@ def process_flags_bytes(_hex_flags):
'VOICE': _voice,
'MASTER': _master
}
# Take a received peer list and the network it belongs to, process and populate the
# data structure in my_ipsc_config with the results, and return a simple list of peers.
@ -579,6 +580,19 @@ def print_master(_network):
print('\t\tStatus: {}, KeepAlives Sent: {}, KeepAlives Outstanding: {}, KeepAlives Missed: {}' .format(_master['STATUS']['CONNECTED'], _master['STATUS']['KEEP_ALIVES_SENT'], _master['STATUS']['KEEP_ALIVES_OUTSTANDING'], _master['STATUS']['KEEP_ALIVES_MISSED']))
print('\t\t KeepAlives Received: {}, Last KeepAlive Received at: {}' .format(_master['STATUS']['KEEP_ALIVES_RECEIVED'], _master['STATUS']['KEEP_ALIVE_RX_TIME']))
# Shut ourselves down gracefully with the IPSC peers.
#
def handler(_signal, _frame):
logger.info('*** DMRLINK IS TERMINATING WITH SIGNAL %s ***', str(_signal))
for network in networks:
this_ipsc = networks[network]
logger.info('De-Registering from IPSC %s', network)
de_reg_req_pkt = this_ipsc.hashed_packet(this_ipsc._local['AUTH_KEY'], this_ipsc.DE_REG_REQ_PKT)
send_to_ipsc(network, de_reg_req_pkt)
reactor.stop()
#************************************************
#******** ***********
#******** IPSC Network 'Engine' ***********
@ -644,6 +658,10 @@ class IPSC(DatagramProtocol):
self.MASTER_ALIVE_REPLY_PKT = (MASTER_ALIVE_REPLY + self._local_id + self.TS_FLAGS + IPSC_VER)
self.PEER_LIST_REPLY_PKT = (PEER_LIST_REPLY + self._local_id)
#
# General Link Maintenance Packets
self.DE_REG_REQ_PKT = (DE_REG_REQ + self._local_id)
self.DE_REG_REPLY_PKT = (DE_REG_REPLY + self._local_id)
#
logger.info('(%s) IPSC Instance Created', self._network)
else:
# If we didn't get called correctly, log it!
@ -1193,6 +1211,11 @@ class IPSC(DatagramProtocol):
if __name__ == '__main__':
logger.info('DMRlink \'dmrlink.py\' (c) 2013, 2014 N0MJS & the K0USY Group - SYSTEM STARTING...')
# Set signal handers so that we can gracefully exit if need be
for sig in [signal.SIGTERM, signal.SIGINT, signal.SIGQUIT]:
signal.signal(sig, handler)
networks = {}
for ipsc_network in NETWORK:
if NETWORK[ipsc_network]['LOCAL']['ENABLED']: