From: Cameron Patrick <cameron@ucc.gu.uwa.edu.au>
Date: Sun, 1 Aug 2004 06:20:50 +0000 (+0000)
Subject: add signal handling code, misc cleanups
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=b04879b3392af38421b5199dd690282c85cabbc4;p=zanchey%2Fdispense2.git

add signal handling code, misc cleanups
---

diff --git a/sql-edition/servers/LATClient.py b/sql-edition/servers/LATClient.py
index fd5cf23..7c21d0d 100644
--- a/sql-edition/servers/LATClient.py
+++ b/sql-edition/servers/LATClient.py
@@ -88,13 +88,12 @@ class LATClient:
 	def read_reply(self):
 		head = self.sock.recv(3)
 		if len(head) != 3:
-			sys.stderr.write('Error: Short LAT packet\n')
-			return None
+			raise LATClientException('Short LAT packet')
 		cmd = head[0]
 		length = ord(head[1])*256 + ord(head[2])
 		msg = self.sock.recv(length)
 		if cmd == LATCP_CMD_ERRORMSG:
-			sys.stderr.write('Error: Received LAT error: %s\n'%msg)
+			raise LATClientException('Received LAT error: %s'%msg)
 		return (cmd, msg)
 	
 	def get_fh(self):
diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py
index d912256..8d1f432 100755
--- a/sql-edition/servers/VendServer.py
+++ b/sql-edition/servers/VendServer.py
@@ -4,7 +4,8 @@
 USE_DB = 0
 
 import ConfigParser
-import sys, os, string, re, pwd
+import sys, os, string, re, pwd, signal
+from traceback import print_tb
 if USE_DB: import pg
 from time import time, sleep
 from popen2 import popen2
@@ -447,13 +448,17 @@ def do_vend_server():
 			print
 			print "Connection died, trying again..."
 
-
 if __name__ == '__main__':
+	def do_nothing(signum, stack): pass
+	def stop_server(signum, stack): raise KeyboardInterrupt
+	signal.signal(signal.SIGHUP, do_nothing)
+	signal.signal(signal.SIGTERM, stop_server)
+	signal.signal(signal.SIGINT, stop_server)
 	while True:
 		try:
 			do_vend_server()
 		except KeyboardInterrupt:
-			print "Killed by SIGINT."
+			print "Killed by signal."
 			break
 		except:
 			(exc_type, exc_value, exc_traceback) = sys.exc_info()