From: Cameron Patrick <cameron@ucc.gu.uwa.edu.au>
Date: Sun, 1 Aug 2004 08:14:34 +0000 (+0000)
Subject: do even more logging
X-Git-Url: https://git.ucc.asn.au/?p=zanchey%2Fdispense2.git;a=commitdiff_plain;h=0b9646109cf26c70c5928eecdc5b7ab617a011cb;ds=inline

do even more logging
---

diff --git a/sql-edition/servers/VendServer.py b/sql-edition/servers/VendServer.py
index 4d9aae2..a09ac2a 100755
--- a/sql-edition/servers/VendServer.py
+++ b/sql-edition/servers/VendServer.py
@@ -25,6 +25,8 @@ DOOR = 1
 SWITCH = 2
 KEY = 3
 
+class DispenseDatabaseException(Exception): pass
+
 class DispenseDatabase:
 	def __init__(self, vending_machine, host, name, user, password):
 		self.vending_machine = vending_machine
@@ -32,16 +34,15 @@ class DispenseDatabase:
 		self.db.query('LISTEN vend_requests')
 
 	def process_requests(self):
-		print 'processing'
+		logging.debug('database processing')
 		query = 'SELECT request_id, request_slot FROM vend_requests WHERE request_handled = false'
 		try:
 			outstanding = self.db.query(query).getresult()
 		except (pg.error,), db_err:
-			sys.stderr.write('Failed to query database: %s\n'%(db_err.strip()))
-			return
+			raise DispenseDatabaseException('Failed to query database: %s\n'%(db_err.strip()))
 		for (id, slot) in outstanding:
 			(worked, code, string) = self.vending_machine.vend(slot)
-			print (worked, code, string)
+			logging.debug (str((worked, code, string)))
 			if worked:
 				query = 'SELECT vend_success(%s)'%id
 				self.db.query(query).getresult()
@@ -115,7 +116,7 @@ def verify_user_pin(uid, pin):
 		return None
 
 def door_open_mode(v):
-	print "Entering open door mode"
+	logging.warning("Entering open door mode")
 	v.display("-FEED  ME-")
 	while True:
 		e = v.next_event()
@@ -123,6 +124,7 @@ def door_open_mode(v):
 		(event, params) = e
 		if event == DOOR:
 			if params == 1: # door closed
+				logging.warning('Leaving open door mode')
 				v.display("-YUM YUM!-")
 				sleep(1)
 				return
@@ -202,7 +204,7 @@ class MessageKeeper:
 
 def run_forever(rfh, wfh, options, cf):
 	v = VendingMachine(rfh, wfh)
-	print 'PING is', v.ping()
+	logging.debug('PING is', v.ping())
 
 	if USE_DB: db = DispenseDatabase(v, cf.DBServer, cf.DBName, cf.DBUser, cf.DBPassword)
 	cur_user = ''
@@ -219,7 +221,11 @@ def run_forever(rfh, wfh, options, cf):
 	last_timeout_refresh = None
 
 	while True:
-		if USE_DB: db.handle_events()
+		if USE_DB:
+			try:
+				db.handle_events()
+			except DispenseDatabaseException, e:
+				logging.error('Database error: '+str(e))
 
 		if time_to_autologout != None:
 			time_left = time_to_autologout - time()
@@ -254,7 +260,7 @@ def run_forever(rfh, wfh, options, cf):
 				continue
 		time_to_idle = None
 		(event, params) = e
-		print e
+		logging.debug('Got event: ' + repr(e))
 		if event == DOOR:
 			if params == 0:
 				door_open_mode(v);
@@ -396,6 +402,7 @@ def parse_args():
 	op.add_option('-s', '--syslog', dest='syslog', action='store_true', default=False, help='log output to syslog')
 	op.add_option('-d', '--daemon', dest='daemon', action='store_true', default=False, help='run as a daemon')
 	op.add_option('-v', '--verbose', dest='verbose', action='store_true', default=False, help='spit out lots of debug output')
+	op.add_option('-q', '--quiet', dest='quiet', action='store_true', default=False, help='only report errors')
 	op.add_option('--pid-file', dest='pid_file', metavar='FILE', default='', help='store daemon\'s pid in the given file')
 	options, args = op.parse_args()
 
@@ -430,7 +437,8 @@ class VendConfigFile:
 				self.__dict__[option] = value
 		
 		except ConfigParser.Error, e:
-			print "Error reading config file "+config_file+": " + str(e)
+			logging.critical("Error reading config file "+config_file+": " + str(e))
+			logging.critical("Bailing out")
 			sys.exit(1)
 
 def create_pid_file(name):
@@ -450,9 +458,9 @@ def set_stuff_up():
 	signal.signal(signal.SIGINT, stop_server)
 
 	options = parse_args()
+	set_up_logging(options)
 	config_opts = VendConfigFile(options.config_file, config_options)
 	if options.daemon: become_daemon()
-	set_up_logging(options)
 	if options.pid_file != '': create_pid_file(options.pid_file)
 
 	return options, config_opts
@@ -483,8 +491,10 @@ def set_up_logging(options):
 		sys_logger = logging.handlers.SysLogHandler('/dev/log', 'daemon')
 		sys_logger.setFormatter(logging.Formatter('vendserver[%d]'%(os.getpid()) + ' %(levelname)s: %(message)s'))
 		logger.addHandler(sys_logger)
-	
-	if options.verbose:
+
+	if options.quiet:
+		logger.setLevel(logging.WARNING)
+	elif options.verbose:
 		logger.setLevel(logging.DEBUG)
 	else:
 		logger.setLevel(logging.INFO)