put in a generic exception handler
[uccvend-vendserver.git] / sql-edition / servers / VendServer.py
index b1274da..4e0b16c 100755 (executable)
@@ -3,14 +3,18 @@
 
 USE_DB = 0
 
+import ConfigParser
 import sys, os, string, re, pwd
 if USE_DB: import pg
 from time import time, sleep
 from popen2 import popen2
-from LATClient import LATClient
-from VendingMachine import VendingMachine
-from ConfigParser import ConfigParser
+from LATClient import LATClient, LATClientException
+from VendingMachine import VendingMachine, VendingException
 from HorizScroll import HorizScroll
+from random import random, seed
+from Idler import TrainIdler,GrayIdler
+import socket
+from traceback import print_tb
 
 GREETING = 'UCC SNACKS'
 PIN_LENGTH = 4
@@ -108,19 +112,43 @@ def verify_user_pin(uid, pin):
        else:
                return None
 
-def door_open_mode(vending_machine):
+def door_open_mode(v):
        print "Entering open door mode"
-       v.display("DOOR  OPEN")
+       v.display("-FEED  ME-")
        while True:
                e = v.next_event()
                if e == None: break
                (event, params) = e
                if event == DOOR:
                        if params == 1: # door closed
-                               v.display("BYE BYE!")
+                               v.display("-YUM YUM!-")
                                sleep(1)
                                return
 
+def cookie(v):
+       seed(time())
+       messages = ['  WASSUP! ', 'PINK FISH ', ' SECRETS ', '  ESKIMO  ', ' FORTUNES ', 'MORE MONEY']
+       choice = int(random()*len(messages))
+       msg = messages[choice]
+       left = range(len(msg))
+       for i in range(len(msg)):
+               if msg[i] == ' ': left.remove(i)
+       reveal = 1
+       while left:
+               s = ''
+               for i in range(0, len(msg)):
+                       if i in left:
+                               if reveal == 0:
+                                       left.remove(i)
+                                       s += msg[i]
+                               else:
+                                       s += chr(int(random()*26)+ord('A'))
+                               reveal += 1
+                               reveal %= 17
+                       else:
+                               s += msg[i]
+               v.display(s)
+
 def center(str):
        LEN = 10
        return ' '*((LEN-len(str))/2)+str
@@ -148,7 +176,7 @@ class MessageKeeper:
                        if len(self.scrolling_message[0][0]) > 10:
                                (m, r, t) = self.scrolling_message[0]
                                a = []
-                               exp = HorizScroll(m).expand(padding = 0, wraparound = False)
+                               exp = HorizScroll(m).expand(padding = 0, wraparound = True)
                                if t == None:
                                        t = 0.1
                                else:
@@ -170,61 +198,50 @@ class MessageKeeper:
        def done(self):
                return len(self.scrolling_message) == 0
 
-if __name__ == '__main__':
-       cp = ConfigParser()
-       cp.read('/etc/dispense/servers.conf')
-       DBServer = cp.get('Database', 'Server')
-       DBName = cp.get('Database', 'Name')
-       DBUser = cp.get('VendingMachine', 'DBUser')
-       DBPassword = cp.get('VendingMachine', 'DBPassword')
-
-       ServiceName = cp.get('VendingMachine', 'ServiceName')
-       ServicePassword = cp.get('VendingMachine', 'Password')
-       # Open vending machine via LAT
-       if 0:
-               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(('localhost', 5150))
-               rfh = sock.makefile('r')
-               wfh = sock.makefile('w')
+def run_forever(rfh, wfh, options, cf):
        v = VendingMachine(rfh, wfh)
        print 'PING is', v.ping()
 
-       if USE_DB: db = DispenseDatabase(v, DBServer, DBName, DBUser, DBPassword)
+       if USE_DB: db = DispenseDatabase(v, cf.DBServer, cf.DBName, cf.DBUser, cf.DBPassword)
        cur_user = ''
        cur_pin = ''
        cur_selection = ''
 
        mk = MessageKeeper(v)
        mk.set_message(GREETING)
-       logout_timeout = None
+       time_to_autologout = None
+       #idler = TrainIdler(v)
+       #idler = GrayIdler(v)
+       idler = GrayIdler(v,one="*",zero="-")
+       time_to_idle = None
        last_timeout_refresh = None
 
        while True:
                if USE_DB: db.handle_events()
 
-               if logout_timeout != None:
-                       time_left = logout_timeout - time()
-                       if time_left < 5 and (last_timeout_refresh is None or last_timeout_refresh > time_left):
+               if time_to_autologout != None:
+                       time_left = time_to_autologout - time()
+                       if time_left < 6 and (last_timeout_refresh is None or last_timeout_refresh > time_left):
                                mk.set_message('LOGOUT: '+str(int(time_left)))
                                last_timeout_refresh = int(time_left)
                                cur_selection = ''
 
-               if logout_timeout != None and logout_timeout - time() <= 0:
-                       logout_timeout = None
+               if time_to_autologout != None and time_to_autologout - time() <= 0:
+                       time_to_autologout = None
                        cur_user = ''
                        cur_pin = ''
                        cur_selection = ''
                        mk.set_message(GREETING)
 
-               if logout_timeout and not mk.done(): logout_timeout = None
-               if len(cur_pin) == PIN_LENGTH and mk.done() and logout_timeout == None:
+               if time_to_autologout and not mk.done(): time_to_autologout = None
+               if cur_user == '' and time_to_autologout: time_to_autologout = None
+               if len(cur_pin) == PIN_LENGTH and mk.done() and time_to_autologout == None:
                        # start autologout
-                       logout_timeout = time() + 15
+                       time_to_autologout = time() + 15
+
+               if time_to_idle == None and cur_user == '': time_to_idle = time() + 60
+               if time_to_idle != None and cur_user != '': time_to_idle = None
+               if time_to_idle is not None and time() > time_to_idle: idler.next()
 
                mk.update_display()
 
@@ -233,6 +250,7 @@ if __name__ == '__main__':
                        e = v.next_event(0.1)
                        if e == None:
                                continue
+               time_to_idle = None
                (event, params) = e
                print e
                if event == DOOR:
@@ -257,10 +275,13 @@ if __name__ == '__main__':
                                if len(cur_user) == 5:
                                        uid = int(cur_user)
                                        if not has_good_pin(uid):
+                                               #mk.set_messages(
+                                                       #[(center('INVALID'), False, 0.7),
+                                                        #(center('PIN'), False, 0.7),
+                                                        #(center('SETUP'), False, 1.0),
+                                                        #(GREETING, False, None)])
                                                mk.set_messages(
-                                                       [(center('INVALID'), False, 0.7),
-                                                        (center('PIN'), False, 0.7),
-                                                        (center('SETUP'), False, 1.0),
+                                                       [(' '*10+'INVALID PIN SETUP'+' '*10, False, 3),
                                                         (GREETING, False, None)])
                                                cur_user = ''
                                                cur_pin = ''
@@ -300,16 +321,17 @@ if __name__ == '__main__':
                                        cur_pin = ''
                                        cur_user = ''
                                        cur_selection = ''
-                                       v.display('BYE!')
-                                       sleep(0.5)
-                                       mk.set_message(GREETING)
+                                       mk.set_messages(
+                                               [(center('BYE!'), False, 1.5),
+                                                (GREETING, False, None)])
                                        continue
                                cur_selection += chr(key + ord('0'))
                                mk.set_message('SELECT: '+cur_selection)
+                               time_to_autologout = None
                        elif len(cur_selection) == 1:
                                if key == 11:
                                        cur_selection = ''
-                                       logout_timeout = None
+                                       time_to_autologout = None
                                        scroll_options(username, mk)
                                        continue
                                else:
@@ -317,8 +339,15 @@ if __name__ == '__main__':
                                        #make_selection(cur_selection)
                                        # XXX this should move somewhere else:
                                        if cur_selection == '55':
-                                               v.display('GOT DOOR?')
-                                               os.system('su - "%s" -c "dispense door"'%username)
+                                               mk.set_message('OPENSESAME')
+                                               ret = os.system('su - "%s" -c "dispense door"'%username)
+                                               if ret == 0:
+                                                       mk.set_message(center('DOOR OPEN'))
+                                               else:
+                                                       mk.set_message(center('BAD DOOR'))
+                                               sleep(1)
+                                       elif cur_selection == '91':
+                                               cookie(v)
                                        elif cur_selection == '99':
                                                scroll_options(username, mk)
                                                cur_selection = ''
@@ -333,4 +362,107 @@ if __name__ == '__main__':
                                        v.display('THANK YOU')
                                        sleep(0.5)
                                        cur_selection = ''
-                                       logout_timeout = time() + 10
+                                       time_to_autologout = time() + 8
+
+def connect_to_vend(options, cf):
+       # Open vending machine via LAT?
+       if options.use_lat:
+               latclient = LATClient(service = cf.ServiceName, password = cf.ServicePassword, server_name = cf.ServerName, connect_password = cf.ConnectPassword, priv_password = cf.PrivPassword)
+               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
+
+def parse_args():
+       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()
+
+       if len(args) != 0:
+               op.error('extra command line arguments: ' + ' '.join(args))
+
+       return options
+
+config_options = {
+       'DBServer': ('Database', 'Server'),
+       'DBName': ('Database', 'Name'),
+       'DBUser': ('VendingMachine', 'DBUser'),
+       'DBPassword': ('VendingMachine', 'DBPassword'),
+       
+       'ServiceName': ('VendingMachine', 'ServiceName'),
+       'ServicePassword': ('VendingMachine', 'Password'),
+       
+       'ServerName': ('DecServer', 'Name'),
+       'ConnectPassword': ('DecServer', 'ConnectPassword'),
+       'PrivPassword': ('DecServer', 'PrivPassword'),
+       }
+
+class VendConfigFile:
+       def __init__(self, config_file, options):
+               try:
+                       cp = ConfigParser.ConfigParser()
+                       cp.read(config_file)
+
+                       for option in options:
+                               section, name = options[option]
+                               value = cp.get(section, name)
+                               self.__dict__[option] = value
+               
+               except ConfigParser.Error, e:
+                       print "Error reading config file "+config_file+": " + str(e)
+                       sys.exit(1)
+
+def do_vend_server():
+       options = parse_args()
+       config_opts = VendConfigFile(options.config_file, config_options)
+
+       while True:
+               try:
+                       rfh, wfh = connect_to_vend(options, config_opts)
+               except (LATClientException, socket.error), e:
+                       (exc_type, exc_value, exc_traceback) = sys.exc_info()
+                       del exc_traceback
+                       print
+                       print "Connection error: "+str(exc_type)+" "+str(e)
+                       print "Trying again in 5 seconds."
+                       sleep(5)
+                       continue
+               try:
+                       run_forever(rfh, wfh, options, config_opts)
+               except VendingException:
+                       print
+                       print "Connection died, trying again..."
+
+
+if __name__ == '__main__':
+       while True:
+               try:
+                       do_vend_server()
+               except KeyboardInterrupt:
+                       print "Killed by SIGINT."
+                       break
+               except:
+                       (exc_type, exc_value, exc_traceback) = sys.exc_info()
+                       print
+                       print "Uh-oh, unhandled " + str(exc_type) + " exception"
+                       print "Message: ", str(exc_value)
+                       print
+                       print_tb(exc_traceback)
+                       del exc_traceback
+                       print
+                       print "This message should be considered a bug in the Vend Server."
+                       print "Please report this to someone who can fix it."
+                       print
+                       print "Trying again anyway (might not help, but hey...)"
+

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