1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
#!/usr/bin/env python
# **********************************************************************
#
# Copyright (c) 2003-2006 ZeroC, Inc. All rights reserved.
#
# This copy of Ice is licensed to you under the terms described in the
# ICE_LICENSE file included in this distribution.
#
# **********************************************************************
import sys, threading, Ice
Ice.loadSlice('Session.ice')
import Demo
class SessionRefreshThread(threading.Thread):
def __init__(self, logger, timeout, session):
threading.Thread.__init__(self)
self._logger = logger
self._session = session
self._timeout = timeout
self._terminated = False
self._cond = threading.Condition()
def run(self):
self._cond.acquire()
try:
while not self._terminated:
self._cond.wait(self._timeout)
if not self._terminated:
try:
self._session.refresh()
except Ice.LocalException, ex:
self._logger.warning("SessionRefreshThread: " + str(ex))
self._terminated = True
finally:
self._cond.release()
def terminate(self):
self._cond.acquire()
try:
self._terminated = True
self._cond.notify()
finally:
self._cond.release()
class Client(Ice.Application):
def run(self, args):
while True:
name = raw_input("Please enter your name ==> ").strip()
if len(name) != 0:
break
base = self.communicator().propertyToProxy('SessionFactory.Proxy')
factory = Demo.SessionFactoryPrx.checkedCast(base)
if not factory:
print args[0] + ": invalid proxy"
return False
session = factory.create(name)
try:
refresh = SessionRefreshThread(self.communicator().getLogger(), 5, session)
refresh.start()
hellos = []
self.menu()
destroy = True
shutdown = False
while True:
try:
c = raw_input("==> ")
s = str(c)
if s.isdigit():
index = int(s)
if index < len(hellos):
hello = hellos[index]
hello.sayHello()
else:
print "Index is too high. " + str(len(hellos)) + " hello objects exist so far.\n" +\
"Use `c' to create a new hello object."
elif c == 'c':
hellos.append(session.createHello())
print "Created hello object",len(hellos) - 1
elif c == 's':
destroy = False
shutdown = True
break
elif c == 'x':
break
elif c == 't':
destroy = False
break
elif c == '?':
self.menu()
else:
print "unknown command `" + c + "'"
self.menu()
except EOFError:
break
except KeyboardInterrupt:
break
#
# The refresher thread must be terminated before destroy is
# called, otherwise it might get ObjectNotExistException. refresh
# is set to 0 so that if session->destroy() raises an exception
# the thread will not be re-terminated and re-joined.
#
refresh.terminate()
refresh.join()
refresh = None
if destroy:
session.destroy()
if shutdown:
factory.shutdown()
finally:
#
# The refresher thread must be terminated in the event of a
# failure.
#
if refresh != None:
refresh.terminate()
refresh.join()
return True
def menu(self):
print """
usage:
c: create a new per-client hello object
0-9: send a greeting to a hello object
s: shutdown the server and exit
x: exit
t: exit without destroying the session
?: help
"""
app = Client()
sys.exit(app.main(sys.argv, "config.client"))
|