From: Cameron Patrick <cameron@ucc.gu.uwa.edu.au>
Date: Sun, 1 Aug 2004 04:24:23 +0000 (+0000)
Subject: be able to reboot the DEC server when it dies
X-Git-Url: https://git.ucc.asn.au/?p=zanchey%2Fdispense2.git;a=commitdiff_plain;h=f308c12442bc9bc54ba21e1f03077a4f45018f58;hp=e353f055315f5782ed760f1c50593230f8c13ece

be able to reboot the DEC server when it dies
---

diff --git a/sql-edition/servers/LATClient.py b/sql-edition/servers/LATClient.py
index ead307a..362a452 100644
--- a/sql-edition/servers/LATClient.py
+++ b/sql-edition/servers/LATClient.py
@@ -1,4 +1,7 @@
 from socket import *
+from select import select
+from os import popen
+from time import sleep
 
 LATCP_SOCKET = '/var/run/latlogin'
 
@@ -8,8 +11,14 @@ LATCP_CMD_TERMINALSESSION = 26
 LATCP_CMD_ERRORMSG = 99
 
 class LATClient:
-	def __init__(self, service = None, node = None, port = None, \
-			localport = None, password = None, is_queued = False):
+	def __init__(self, service = None, node = None, port = None,
+		     localport = None, password = None, is_queued = False,
+		     server_name = '', connect_password='', priv_password=''):
+
+		self.server_name = server_name
+		self.connect_password = connect_password
+		self.priv_password = priv_password
+		
 		self.sock = socket(AF_UNIX, SOCK_STREAM, 0);
 		self.sock.connect(LATCP_SOCKET)
 		self.send_msg(LATCP_CMD_VERSION, LAT_VERSION+'\000')
@@ -35,6 +44,13 @@ class LATClient:
 		if ord(cmd) == LATCP_CMD_ERRORMSG:
 			raise Exception('LATClient: '+msg)
 
+		r = select([self.sock], [], [], 2.0)[0]
+		if r:
+			l = self.sock.readline()
+			if l.find('Service in use') >= 0:
+				print "Service in use, apparently: restarting DEC server"
+				self.reboot_server()
+
 	def __del__(self):
 		try:
 			self.sock.close()
@@ -46,6 +62,20 @@ class LATClient:
 	def send_msg(self, cmd, msg):
 		self.sock.send('%c%c%c%s'%(cmd, len(msg)/256, len(msg)%256, msg))
 
+	def reboot_server(self):
+		self.sock.shutdown(2)
+		self.sock.close()
+		mop = popen('/usr/sbin/moprc '+self.server_name, 'w')
+		mop.write('\n')
+		mop.write(self.connect_password+'\n')
+		mop.write('grim reaper\n')
+		mop.write('set priv\n')
+		mop.write(self.priv_password+'\n')
+		mop.write('init del 0\n')
+		mop.close()
+		print "Waiting 10 seconds for DEC server to come back to life..."
+		sleep(10)
+
 	def read_reply(self):
 		head = self.sock.recv(3)
 		if len(head) != 3: