keep going when the connection to the vending machine is lost

[uccvend-vendserver.git] / sql-edition / servers / VendServer.py

diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py
index 19a7e67..ff17122 100755 (executable)
--- a/sql-edition/servers/VendServer.py
+++ b/sql-edition/servers/VendServer.py
@@ -361,21 +361,38 @@ def run_forever(rfh, wfh):
                                        cur_selection = ''
                                        time_to_autologout = time() + 8
 
+# FIXME: a less ugly way of passing all these options would be nice
+def connect_to_vend(options, DBServer, DBName, DBUser, DBPassword, ServiceName, ServicePassword):
+       # Open vending machine via LAT
+       if options.use_lat:
+               latclient = LATClient(service = ServiceName, password = ServicePassword)
+               rfh, wfh = latclient.get_fh()
+       else:
+               #(rfh, wfh) = popen2('../../virtualvend/vvend.py')
+               import socket
+               sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
+               sock.connect((options.host, options.port))
+               rfh = sock.makefile('r')
+               wfh = sock.makefile('w')
+               
+       return rfh, wfh
+
 if __name__ == '__main__':
        from ConfigParser import ConfigParser
        from optparse import OptionParser
 
        op = OptionParser(usage="%prog [OPTION]...")
+       op.add_option('-f', '--config-file', default='/etc/dispense/servers.conf', metavar='FILE', dest='config_file', help='use the specified config file instead of /etc/dispense/servers.conf')
        op.add_option('-v', '--virtualvend', action='store_false', default=True, dest='use_lat', help='use the virtual vending server instead of LAT')
        op.add_option('-n', '--hostname', dest='host', default='localhost', help='the hostname to connect to for virtual vending machine mode (default: localhost)')
        op.add_option('-p', '--port', dest='port', default=5150, type='int', help='the port number to connect to (default: 5150)')
-       (options, args) = op.parse_args()
+       options, args = op.parse_args()
 
        if len(args) != 0:
                op.error('extra command line arguments: ' + ' '.join(args))
 
        cp = ConfigParser()
-       cp.read('/etc/dispense/servers.conf')
+       cp.read(options.config_file)
        DBServer = cp.get('Database', 'Server')
        DBName = cp.get('Database', 'Name')
        DBUser = cp.get('VendingMachine', 'DBUser')
@@ -384,18 +401,10 @@ if __name__ == '__main__':
        ServiceName = cp.get('VendingMachine', 'ServiceName')
        ServicePassword = cp.get('VendingMachine', 'Password')
 
-       
-       
-#      # Open vending machine via LAT
-       if options.use_lat:
-               latclient = LATClient(service = ServiceName, password = ServicePassword)
-               (rfh, wfh) = latclient.get_fh()
-       else:
-               #(rfh, wfh) = popen2('../../virtualvend/vvend.py')
-               import socket
-               sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
-               sock.connect((options.host, options.port))
-               rfh = sock.makefile('r')
-               wfh = sock.makefile('w')
-       
-       run_forever(rfh, wfh)
+       while True:
+               rfh, wfh = connect_to_vend(options, DBServer, DBName, DBUser, DBPassword, ServiceName, ServicePassword)
+               try:
+                       run_forever(rfh, wfh)
+               except VendingException:
+                       print "Connection died, trying again..."
+