-
Notifications
You must be signed in to change notification settings - Fork 1
/
test_mq.py
464 lines (417 loc) · 16 KB
/
test_mq.py
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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
#SERVER_PORT -*- coding: utf-8 -*-
# TCP client example
# TODO: need to make sure that the queue is empty, or we need to empty the queue
import socket
import sys
import random
import time
HOST='localhost'
PORT=8788
EMPTY_MESSAGE='\x00'
def set_diff_sample(set1,set2):
""" Given set1 and set2 that differ, returns an example of 1 element from set1
not in set2 (if it exists) and likewise for set2 """
try:
not_in_set2=list(set1 - set2)[0]
except: not_in_set2=None
try:
not_in_set1=list(set2 - set1)[0]
except: not_in_set1=None
return not_in_set1, not_in_set2
class Message(object):
def __init__(self, head, body):
self.head=head
self.body=body
def is_empty(self):
return self.head is None and self.body is None
def __eq__(self,m):
return self.head==m.head and self.body==m.body
def __len__(self):
return len(self.head) + len(self.body)
def __repr__(self):
if self.is_empty(): return ""
return self.head + "\r\n" + self.body
def debugprint(dbg, s):
if dbg: print s
socket_calls=0
def createSocket(host,port):
global socket_calls
socket_calls += 1
#print "Creating socket (called: %d)" % socket_calls
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect((host,port))
return client_socket
def generateRandomJapaneseString(minlength, maxlength, minlines, maxlines):
msg=[]
base="""東日本大震災に関する情報 ( 消息情報、避難所、義援金受付など ）をまとめたサイトを開設しています。"""
base=unicode(base,'utf-8')
num_lines=random.randint(minlines,maxlines)
for i in range(0,num_lines):
num_chars=random.randint(minlength,maxlength)
buffer=[]
for j in range(0,len(base)):
c=base[random.randint(0,len(base)-1)]
buffer.append(c)
s=unicode('').join(buffer)
msg.append(s)
msg=unicode('\r\n').join(msg)
return msg.encode('utf-8')
def generateRandomString(minlength, maxlength, minlines, maxlines):
msg=[]
num_lines=random.randint(minlines,maxlines)
for i in range(0,num_lines):
num_chars=random.randint(minlength,maxlength)
buffer=[]
for j in range(0,num_chars):
c=chr(97 + random.randint(0,25))
buffer.append(c)
s=''.join(buffer)
msg.append(s)
return '\r\n'.join(msg)
class client(object):
def __init__(self,host,port,bytes_to_read=4096, debug=0):
self.host=host
self.port=port
self.socket=createSocket(self.host,self.port)
self.n=bytes_to_read
self.debug=debug
def close(self):
self.socket.close()
def reopen(self):
try: self.close()
except: pass
self.socket=createSocket(self.host,self.port)
def createMessage(self,head,body):
"""
put messages have the following format:
PUT
\r\n
<head>
\r\n
<nbytes>
\r\n
<body>
\r\n
"""
nbytes=len(body)
msg='PUT\r\n%s\r\n%d\r\n%s\r\n' % (head,nbytes,body)
return msg
def put(self, head, msg):
msg=self.createMessage(head, msg)
self.socket.send(msg)
debugprint(self.debug,"Sending message (%s): %s" % (len(msg),msg))
recv=self.socket.recv(self.n)
return recv
def count(self):
header="COUNT\r\n"
self.socket.send(header)
recv=self.socket.recv(self.n)
return int(recv)
def get(self,extra=""):
""" send a GET request
extra is an additional string that can be tacked
on for testing purposes
"""
header="GET\r\n%s" % extra
if (extra): print "Sending %d extra bytes." % len(extra)
self.socket.send(header)
recv=self.socket.recv(self.n)
return self._parse_received(recv)
def match(self,head):
header="MATCH\r\n%s\r\n" % head
self.socket.send(header)
recv=self.socket.recv(self.n)
return self._parse_received(recv)
def _parse_received(self,recv):
# last two chars should be \r\n
# and this is probably not the best way to do this...
if recv==EMPTY_MESSAGE: return Message(None, None)
if len(recv)>=2:
if recv[-1]=='\n': recv=recv[0:len(recv)-1]
if recv[-1]=='\r': recv=recv[0:len(recv)-1]
lines=recv.split('\r\n')
head=lines[0]
body='\r\n'.join(lines[1:])
return Message(head,body)
def send_random_valid(minlength, maxlength, minlines, maxlines):
msg=generateRandomString(minlength, maxlength, minlines, maxlines)
head=generateRandomString(minlength, maxlength, 1, 1)
return self.put(head,msg)
def send(self,msg):
""" unlike put, doesn't append PUT to the message --
good for sending invalid messages"""
self.socket.send(msg)
debugprint(self.debug,"Sending message (%s): %s" % (len(msg),msg))
recv=self.socket.recv(self.n)
debugprint(self.debug,"Received: %s" % (recv))
return recv
def empty(self):
while self.count(): self.get()
# TODO: use python's unit-testing framework
class test_mq(object):
def __init__(self, minlength=100, maxlength=300, minlines=1, maxlines=10,debug=0):
self.minlength=minlength
self.maxlength=maxlength
self.minlines=minlines
self.maxlines=maxlines
self.debug=debug
def empty_queue(self,c):
c.empty()
count=c.count()
assert count==0
def test_get_extra(self,N):
print "Running: test_get_extra, N=%s" % N
# send N messages whose length is 0
c=client(HOST,PORT,debug=self.debug)
self.empty_queue(c)
messages=[]
return_messages=[]
lenN=len("%d"% N)
for i in range(0,N):
li=len("%d" % i)
num= "%s%d" % ("0"*(lenN-li),i) # pad with 0s
head="head-%s" % num
body="body-%s" % num
c.put(head,body)
msglen=len("head-") + len("body-") + 2 * lenN
import pdb ; pdb.set_trace()
for i in range(0,N):
extra_bytes="a"*(4096 + random.randint(1,100))
retmsg=c.get(extra=extra_bytes)
retlen=len(retmsg)
assert retlen==msglen, "We expected the returned message to be length %d, but it was %d: %s." % \
(msglen, retlen, retmsg)
new_count=c.count()
assert new_count==0
print "Passed: test_get_extra, N=%s" % N
def test_empty_messages(self,N):
print "Running: test_empty_messages, N=%s" % N
# send N messages whose length is 0
c=client(HOST,PORT,debug=self.debug)
self.empty_queue(c)
messages=[]
return_messages=[]
for i in range(0,N):
msg=""
messages.append(msg)
for i in range(0,N):
c.put("",messages[i])
for i in range(0,N):
assert len(c.get())==0
new_count=c.count()
assert new_count==0
print "Passed: test_empty_messages, N=%s" % N
def test_long_messages(self,N):
# send N messages whose length > 4096
# the result should be that the messages are stored, but truncated
c=client(HOST,PORT,debug=self.debug)
count=c.count()
messages=[]
return_messages=[]
for i in range(0,N):
msg="a"*(4096 + random.randint(1,100))
head="head-%d" % random.randint(10,99)
messages.append(msg)
for i in range(0,N):
c.put(head,messages[i])
# confirm that message length is 4089
# 4089 = 4096 - len("PUT\r\n") - len("\r\n") - the trailing CRLF + len(head)A
# and len(head)=7
for i in range(0,N):
rmsg=c.get()
assert len(rmsg)==4089, "Message is supposed to have length 4096, but it has length %d." % len(rmsg)
new_count=c.count()
assert new_count==count
def test_invalid_messages(self,N):
print "Running: test_invalid_messages, N=%s" % N
c=client(HOST,PORT,debug=self.debug)
self.empty_queue(c)
count=c.count()
assert count==0, "Message queue should be empty."
invalid_messages=[]
return_messages=[]
for i in range(0,N):
# create a string without the PUT or other elements of proper msg structure
illformed_msg="a"*(4096 + random.randint(1,100))
invalid_messages.append(illformed_msg)
counter=0
while counter<N:
validmsg="%d this is a valid message" % counter
# send some random number of bad messages
num_send=random.randint(1,N-counter)
for j in range(0,num_send): c.send(invalid_messages[j])
counter += num_send
# validate that there are no valid messages in the queue
assert c.get().is_empty()
assert c.count()==0
# put a valid message in the queue
c.put("head",validmsg)
msgback=c.get()
# check that it's there
assert msgback==Message('head',validmsg), "We expected '%s' but got '%s'" % (validmsg,msgback)
new_count=c.count()
assert new_count==count, "New count (%d) should be equal to count (%d)." % (new_count,count)
for i in range(0,N):
assert c.get().is_empty()
print "Passed: test_invalid_messages, N=%s" % N
def _test_reassemble(self,N,string_generator):
# generate and send N messages
# numbered 0 through N-1
# make N get requests and validate that you have all N
# messages and that count is unchanged
c=client(HOST,PORT,debug=self.debug)
count=c.count()
messages=[]
return_messages=[]
for i in range(0,N):
body=string_generator(self.minlength, self.maxlength, self.minlines, self.maxlines)
head="_HEAD_START_" + string_generator(self.minlength, 100, 1, 1,) + "_HEAD_END_"
messages.append(Message(head,body))
for i in range(0,N):
c.put(messages[i].head, messages[i].body)
for i in range(0,N):
return_messages.append(c.get())
self.compare_message_sets(return_messages, messages)
new_count=c.count()
assert new_count==count
def compare_message_sets(self,return_messages, original_messages):
return_messages=set([str(r) for r in return_messages])
original_messages=set([str(m) for m in original_messages])
assert return_messages==original_messages, \
"Return messages not the same as original messages:\n------(not in return)\n%s\n-----(not in original)\n%s " % \
set_diff_sample(return_messages,original_messages)
def test_reassemble_basic(self,N):
# generate and send N messages
# numbered 0 through N-1
# make N get requests and validate that you have all N
# messages and that count is unchanged
print "Running: test_reassemble_basic, N=%s" % N
c=client(HOST,PORT,debug=self.debug)
count=c.count()
messages=[]
return_messages=[]
for i in range(0,N):
body="message - %d" % i
head="head - %d" % i
messages.append(Message(head,body))
for i in range(0,N):
c.put(messages[i].head, messages[i].body)
for i in range(0,N):
return_messages.append(c.get())
self.compare_message_sets(return_messages, messages)
new_count=c.count()
assert new_count==count
print "Passed: test_reassemble_basic, N=%s" % N
def test_match_basic(self,N):
# generate and send N messages
# numbered 0 through N-1
# make M match requests and validate that you retrieved
# only the correct messages
print "Running: test_match_basic, N=%s" % N
if N<2: N=2
M=N/2
c=client(HOST,PORT,debug=self.debug)
count=c.count()
nonmatch_messages=[]
match_messages=[]
return_messages=[]
for i in range(0,M):
body="message - %d" % i
head="head - %d" % i
nonmatch_messages.append(Message(head,body))
for i in range(0,M):
msglen=c.put(nonmatch_messages[i].head, nonmatch_messages[i].body)
assert msglen, "mq return empty message length"
for i in range(0,M):
body="message - %d" % i
head="match"
match_messages.append(Message(head,body))
for i in range(0,M):
msglen=c.put(match_messages[i].head, match_messages[i].body)
assert msglen, "mq return empty message length"
for i in range(0,M):
return_messages.append(c.match("match"))
self.compare_message_sets(return_messages, match_messages)
new_count=c.count()
assert new_count==count + len(nonmatch_messages)
print "Passed: test_match_basic, N=%s" % N
def test_reassemble(self,N):
print "Running: test_reassemble, N=%s" % N
self._test_reassemble(N,generateRandomString)
print "Passed: test_reassemble, N=%s" % N
return
def test_reassemble_utf8(self,N):
print "Running: test_reassemble_utf8, N=%s" % N
self._test_reassemble(N,generateRandomJapaneseString)
print "Passed: test_reassemble_utf8, N=%s" % N
return
def test_empty_gets(self,N):
# generate and send N messages
# numbered 0 through N-1
# make N get requests and validate that you have all N
# messages and that count is unchanged
print "Running: test_emtpy_gets, N=%s" % N
c=client(HOST,PORT,debug=self.debug)
count=c.count()
messages=[]
return_messages=[]
for i in range(0,N):
body=generateRandomString(self.minlength, self.maxlength, self.minlines, self.maxlines)
head=generateRandomString(10, 100, 1, 1)
messages.append(Message(head,body))
for i in range(0,N):
c.put(messages[i].head, messages[i].body)
for i in range(0,N):
return_messages.append(c.get())
self.compare_message_sets(return_messages, messages)
new_count=c.count()
assert new_count==count
return_messages=[]
for i in range(0,N):
return_messages.append(c.get())
assert len(return_messages)==N
for m in return_messages: assert m.is_empty()
print "Passed: test_emtpy_gets, N=%s" % N
def test_count_requests(self,N):
print "Running: test_count_requests, N=%s" % N
c=client(HOST,PORT,debug=self.debug)
count=c.count()
messages=[]
return_messages=[]
for i in range(0,N):
body=generateRandomString(self.minlength, self.maxlength, self.minlines, self.maxlines)
head=generateRandomString(10, 100, 1, 1)
messages.append(Message(head,body))
for i in range(0,N):
c.put(messages[i].head, messages[i].body)
for i in range(0,N):
cr=c.count()
assert cr==N-i, "Count request should return %d, but it returned %d." % (cr,N-i)
return_messages.append(c.get())
self.compare_message_sets(return_messages, messages)
new_count=c.count()
assert new_count==count
# empty the queue
while (c.count()): c.get()
print "Passed: test_count_requests, N=%s" % N
def run(self,N):
self.test_invalid_messages(N)
self.test_match_basic(N)
self.test_empty_messages(N)
self.test_count_requests(N)
self.test_reassemble_basic(N)
self.test_reassemble(N)
self.test_empty_gets(N)
self.test_reassemble_utf8(N)
#self.test_long_messages(N)
#self.test_get_extra(N)
# tests
# (1) reassemble
# (2) multiple long messages
# (3) count requests
# (4) gets where there are no messages
# (5) invalid messages
debug=0
N=2000
tmq=test_mq(debug=debug)
tmq.run(N)