summaryrefslogtreecommitdiffstats
path: root/Lib/test/test_logging.py
blob: 953acad4d5b463a27f3f84eeb290a3e55f7354df (plain)
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
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
#!/usr/bin/env python
#
# Copyright 2001-2004 by Vinay Sajip. All Rights Reserved.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose and without fee is hereby granted,
# provided that the above copyright notice appear in all copies and that
# both that copyright notice and this permission notice appear in
# supporting documentation, and that the name of Vinay Sajip
# not be used in advertising or publicity pertaining to distribution
# of the software without specific, written prior permission.
# VINAY SAJIP DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
# VINAY SAJIP BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
# IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
# This file is part of the Python logging distribution. See
# http://www.red-dove.com/python_logging.html
#
"""Test harness for the logging module. Run all tests.

Copyright (C) 2001-2002 Vinay Sajip. All Rights Reserved.
"""

import select
import os, sys, struct, pickle, cStringIO
import socket, tempfile, threading, time
import logging, logging.handlers, logging.config
from test.test_support import run_with_locale

BANNER = "-- %-10s %-6s ---------------------------------------------------\n"

FINISH_UP = "Finish up, it's closing time. Messages should bear numbers 0 through 24."

#----------------------------------------------------------------------------
# Log receiver
#----------------------------------------------------------------------------

TIMEOUT         = 10

from SocketServer import ThreadingTCPServer, StreamRequestHandler

class LogRecordStreamHandler(StreamRequestHandler):
    """
    Handler for a streaming logging request. It basically logs the record
    using whatever logging policy is configured locally.
    """

    def handle(self):
        """
        Handle multiple requests - each expected to be a 4-byte length,
        followed by the LogRecord in pickle format. Logs the record
        according to whatever policy is configured locally.
        """
        while 1:
            try:
                chunk = self.connection.recv(4)
                if len(chunk) < 4:
                    break
                slen = struct.unpack(">L", chunk)[0]
                chunk = self.connection.recv(slen)
                while len(chunk) < slen:
                    chunk = chunk + self.connection.recv(slen - len(chunk))
                obj = self.unPickle(chunk)
                record = logging.makeLogRecord(obj)
                self.handleLogRecord(record)
            except:
                raise

    def unPickle(self, data):
        return pickle.loads(data)

    def handleLogRecord(self, record):
        logname = "logrecv.tcp." + record.name
        #If the end-of-messages sentinel is seen, tell the server to terminate
        if record.msg == FINISH_UP:
            self.server.abort = 1
        record.msg = record.msg + " (via " + logname + ")"
        logger = logging.getLogger(logname)
        logger.handle(record)

# The server sets socketDataProcessed when it's done.
socketDataProcessed = threading.Event()

class LogRecordSocketReceiver(ThreadingTCPServer):
    """
    A simple-minded TCP socket-based logging receiver suitable for test
    purposes.
    """

    allow_reuse_address = 1

    def __init__(self, host='localhost',
                             port=logging.handlers.DEFAULT_TCP_LOGGING_PORT,
                     handler=LogRecordStreamHandler):
        ThreadingTCPServer.__init__(self, (host, port), handler)
        self.abort = 0
        self.timeout = 1

    def serve_until_stopped(self):
        while not self.abort:
            rd, wr, ex = select.select([self.socket.fileno()], [], [],
                                       self.timeout)
            if rd:
                self.handle_request()
        #notify the main thread that we're about to exit
        socketDataProcessed.set()
        # close the listen socket
        self.server_close()

    def process_request(self, request, client_address):
        #import threading
        t = threading.Thread(target = self.finish_request,
                             args = (request, client_address))
        t.start()

def runTCP(tcpserver):
    tcpserver.serve_until_stopped()

#----------------------------------------------------------------------------
# Test 0
#----------------------------------------------------------------------------

msgcount = 0

def nextmessage():
    global msgcount
    rv = "Message %d" % msgcount
    msgcount = msgcount + 1
    return rv

def test0():
    ERR = logging.getLogger("ERR")
    ERR.setLevel(logging.ERROR)
    INF = logging.getLogger("INF")
    INF.setLevel(logging.INFO)
    INF_ERR  = logging.getLogger("INF.ERR")
    INF_ERR.setLevel(logging.ERROR)
    DEB = logging.getLogger("DEB")
    DEB.setLevel(logging.DEBUG)

    INF_UNDEF = logging.getLogger("INF.UNDEF")
    INF_ERR_UNDEF = logging.getLogger("INF.ERR.UNDEF")
    UNDEF = logging.getLogger("UNDEF")

    GRANDCHILD = logging.getLogger("INF.BADPARENT.UNDEF")
    CHILD = logging.getLogger("INF.BADPARENT")

    #These should log
    ERR.log(logging.FATAL, nextmessage())
    ERR.error(nextmessage())

    INF.log(logging.FATAL, nextmessage())
    INF.error(nextmessage())
    INF.warn(nextmessage())
    INF.info(nextmessage())

    INF_UNDEF.log(logging.FATAL, nextmessage())
    INF_UNDEF.error(nextmessage())
    INF_UNDEF.warn (nextmessage())
    INF_UNDEF.info (nextmessage())

    INF_ERR.log(logging.FATAL, nextmessage())
    INF_ERR.error(nextmessage())

    INF_ERR_UNDEF.log(logging.FATAL, nextmessage())
    INF_ERR_UNDEF.error(nextmessage())

    DEB.log(logging.FATAL, nextmessage())
    DEB.error(nextmessage())
    DEB.warn (nextmessage())
    DEB.info (nextmessage())
    DEB.debug(nextmessage())

    UNDEF.log(logging.FATAL, nextmessage())
    UNDEF.error(nextmessage())
    UNDEF.warn (nextmessage())
    UNDEF.info (nextmessage())

    GRANDCHILD.log(logging.FATAL, nextmessage())
    CHILD.log(logging.FATAL, nextmessage())

    #These should not log
    ERR.warn(nextmessage())
    ERR.info(nextmessage())
    ERR.debug(nextmessage())

    INF.debug(nextmessage())
    INF_UNDEF.debug(nextmessage())

    INF_ERR.warn(nextmessage())
    INF_ERR.info(nextmessage())
    INF_ERR.debug(nextmessage())
    INF_ERR_UNDEF.warn(nextmessage())
    INF_ERR_UNDEF.info(nextmessage())
    INF_ERR_UNDEF.debug(nextmessage())

    INF.info(FINISH_UP)

#----------------------------------------------------------------------------
# Test 1
#----------------------------------------------------------------------------

#
#   First, we define our levels. There can be as many as you want - the only
#     limitations are that they should be integers, the lowest should be > 0 and
#   larger values mean less information being logged. If you need specific
#   level values which do not fit into these limitations, you can use a
#   mapping dictionary to convert between your application levels and the
#   logging system.
#
SILENT      = 10
TACITURN    = 9
TERSE       = 8
EFFUSIVE    = 7
SOCIABLE    = 6
VERBOSE     = 5
TALKATIVE   = 4
GARRULOUS   = 3
CHATTERBOX  = 2
BORING      = 1

LEVEL_RANGE = range(BORING, SILENT + 1)

#
#   Next, we define names for our levels. You don't need to do this - in which
#   case the system will use "Level n" to denote the text for the level.
#
my_logging_levels = {
    SILENT      : 'Silent',
    TACITURN    : 'Taciturn',
    TERSE       : 'Terse',
    EFFUSIVE    : 'Effusive',
    SOCIABLE    : 'Sociable',
    VERBOSE     : 'Verbose',
    TALKATIVE   : 'Talkative',
    GARRULOUS   : 'Garrulous',
    CHATTERBOX  : 'Chatterbox',
    BORING      : 'Boring',
}

#
#   Now, to demonstrate filtering: suppose for some perverse reason we only
#   want to print out all except GARRULOUS messages. Let's create a filter for
#   this purpose...
#
class SpecificLevelFilter(logging.Filter):
    def __init__(self, lvl):
        self.level = lvl

    def filter(self, record):
        return self.level != record.levelno

class GarrulousFilter(SpecificLevelFilter):
    def __init__(self):
        SpecificLevelFilter.__init__(self, GARRULOUS)

#
#   Now, let's demonstrate filtering at the logger. This time, use a filter
#   which excludes SOCIABLE and TACITURN messages. Note that GARRULOUS events
#   are still excluded.
#
class VerySpecificFilter(logging.Filter):
    def filter(self, record):
        return record.levelno not in [SOCIABLE, TACITURN]

def message(s):
    sys.stdout.write("%s\n" % s)

SHOULD1 = "This should only be seen at the '%s' logging level (or lower)"

def test1():
#
#   Now, tell the logging system to associate names with our levels.
#
    for lvl in my_logging_levels.keys():
        logging.addLevelName(lvl, my_logging_levels[lvl])

#
#   Now, define a test function which logs an event at each of our levels.
#

    def doLog(log):
        for lvl in LEVEL_RANGE:
            log.log(lvl, SHOULD1, logging.getLevelName(lvl))

    log = logging.getLogger("")
    hdlr = log.handlers[0]
#
#   Set the logging level to each different value and call the utility
#   function to log events.
#   In the output, you should see that each time round the loop, the number of
#   logging events which are actually output decreases.
#
    for lvl in LEVEL_RANGE:
        message("-- setting logging level to '%s' -----" %
                        logging.getLevelName(lvl))
        log.setLevel(lvl)
        doLog(log)
  #
  #   Now, we demonstrate level filtering at the handler level. Tell the
  #   handler defined above to filter at level 'SOCIABLE', and repeat the
  #   above loop. Compare the output from the two runs.
  #
    hdlr.setLevel(SOCIABLE)
    message("-- Filtering at handler level to SOCIABLE --")
    for lvl in LEVEL_RANGE:
        message("-- setting logging level to '%s' -----" %
                      logging.getLevelName(lvl))
        log.setLevel(lvl)
        doLog(log)

    hdlr.setLevel(0)    #turn off level filtering at the handler

    garr = GarrulousFilter()
    hdlr.addFilter(garr)
    message("-- Filtering using GARRULOUS filter --")
    for lvl in LEVEL_RANGE:
        message("-- setting logging level to '%s' -----" %
                        logging.getLevelName(lvl))
        log.setLevel(lvl)
        doLog(log)
    spec = VerySpecificFilter()
    log.addFilter(spec)
    message("-- Filtering using specific filter for SOCIABLE, TACITURN --")
    for lvl in LEVEL_RANGE:
        message("-- setting logging level to '%s' -----" %
                      logging.getLevelName(lvl))
        log.setLevel(lvl)
        doLog(log)

    log.removeFilter(spec)
    hdlr.removeFilter(garr)
    #Undo the one level which clashes...for regression tests
    logging.addLevelName(logging.DEBUG, "DEBUG")

#----------------------------------------------------------------------------
# Test 2
#----------------------------------------------------------------------------

MSG = "-- logging %d at INFO, messages should be seen every 10 events --"
def test2():
    logger = logging.getLogger("")
    sh = logger.handlers[0]
    sh.close()
    logger.removeHandler(sh)
    mh = logging.handlers.MemoryHandler(10,logging.WARNING, sh)
    logger.setLevel(logging.DEBUG)
    logger.addHandler(mh)
    message("-- logging at DEBUG, nothing should be seen yet --")
    logger.debug("Debug message")
    message("-- logging at INFO, nothing should be seen yet --")
    logger.info("Info message")
    message("-- logging at WARNING, 3 messages should be seen --")
    logger.warn("Warn message")
    for i in range(102):
        message(MSG % i)
        logger.info("Info index = %d", i)
    mh.close()
    logger.removeHandler(mh)
    logger.addHandler(sh)

#----------------------------------------------------------------------------
# Test 3
#----------------------------------------------------------------------------

FILTER = "a.b"

def doLog3():
    logging.getLogger("a").info("Info 1")
    logging.getLogger("a.b").info("Info 2")
    logging.getLogger("a.c").info("Info 3")
    logging.getLogger("a.b.c").info("Info 4")
    logging.getLogger("a.b.c.d").info("Info 5")
    logging.getLogger("a.bb.c").info("Info 6")
    logging.getLogger("b").info("Info 7")
    logging.getLogger("b.a").info("Info 8")
    logging.getLogger("c.a.b").info("Info 9")
    logging.getLogger("a.bb").info("Info 10")

def test3():
    root = logging.getLogger()
    root.setLevel(logging.DEBUG)
    hand = root.handlers[0]
    message("Unfiltered...")
    doLog3()
    message("Filtered with '%s'..." % FILTER)
    filt = logging.Filter(FILTER)
    hand.addFilter(filt)
    doLog3()
    hand.removeFilter(filt)

#----------------------------------------------------------------------------
# Test 4
#----------------------------------------------------------------------------

# config0 is a standard configuration.
config0 = """
[loggers]
keys=root

[handlers]
keys=hand1

[formatters]
keys=form1

[logger_root]
level=NOTSET
handlers=hand1

[handler_hand1]
class=StreamHandler
level=NOTSET
formatter=form1
args=(sys.stdout,)

[formatter_form1]
format=%(levelname)s:%(name)s:%(message)s
datefmt=
"""

# config1 adds a little to the standard configuration.
config1 = """
[loggers]
keys=root,parser

[handlers]
keys=hand1

[formatters]
keys=form1

[logger_root]
level=NOTSET
handlers=hand1

[logger_parser]
level=DEBUG
handlers=hand1
propagate=1
qualname=compiler.parser

[handler_hand1]
class=StreamHandler
level=NOTSET
formatter=form1
args=(sys.stdout,)

[formatter_form1]
format=%(levelname)s:%(name)s:%(message)s
datefmt=
"""

# config2 has a subtle configuration error that should be reported
config2 = config1.replace("sys.stdout", "sys.stbout")

# config3 has a less subtle configuration error
config3 = config1.replace("formatter=form1", "formatter=misspelled_name")

def test4():
    for i in range(4):
        conf = globals()['config%d' % i]
        sys.stdout.write('config%d: ' % i)
        loggerDict = logging.getLogger().manager.loggerDict
        logging._acquireLock()
        try:
            saved_handlers = logging._handlers.copy()
            saved_handler_list = logging._handlerList[:]
            saved_loggers = loggerDict.copy()
        finally:
            logging._releaseLock()
        try:
            fn = tempfile.mktemp(".ini")
            f = open(fn, "w")
            f.write(conf)
            f.close()
            try:
                logging.config.fileConfig(fn)
                #call again to make sure cleanup is correct
                logging.config.fileConfig(fn)
            except:
                t = sys.exc_info()[0]
                message(str(t))
            else:
                message('ok.')
            os.remove(fn)
        finally:
            logging._acquireLock()
            try:
                logging._handlers.clear()
                logging._handlers.update(saved_handlers)
                logging._handlerList[:] = saved_handler_list
                loggerDict = logging.getLogger().manager.loggerDict
                loggerDict.clear()
                loggerDict.update(saved_loggers)
            finally:
                logging._releaseLock()

#----------------------------------------------------------------------------
# Test 5
#----------------------------------------------------------------------------

test5_config = """
[loggers]
keys=root

[handlers]
keys=hand1

[formatters]
keys=form1

[logger_root]
level=NOTSET
handlers=hand1

[handler_hand1]
class=StreamHandler
level=NOTSET
formatter=form1
args=(sys.stdout,)

[formatter_form1]
class=test.test_logging.FriendlyFormatter
format=%(levelname)s:%(name)s:%(message)s
datefmt=
"""

class FriendlyFormatter (logging.Formatter):
    def formatException(self, ei):
        return "%s... Don't panic!" % str(ei[0])


def test5():
    loggerDict = logging.getLogger().manager.loggerDict
    logging._acquireLock()
    try:
        saved_handlers = logging._handlers.copy()
        saved_handler_list = logging._handlerList[:]
        saved_loggers = loggerDict.copy()
    finally:
        logging._releaseLock()
    try:
        fn = tempfile.mktemp(".ini")
        f = open(fn, "w")
        f.write(test5_config)
        f.close()
        logging.config.fileConfig(fn)
        try:
            raise KeyError
        except KeyError:
            logging.exception("just testing")
        os.remove(fn)
        hdlr = logging.getLogger().handlers[0]
        logging.getLogger().handlers.remove(hdlr)
    finally:
        logging._acquireLock()
        try:
            logging._handlers.clear()
            logging._handlers.update(saved_handlers)
            logging._handlerList[:] = saved_handler_list
            loggerDict = logging.getLogger().manager.loggerDict
            loggerDict.clear()
            loggerDict.update(saved_loggers)
        finally:
            logging._releaseLock()


#----------------------------------------------------------------------------
# Test Harness
#----------------------------------------------------------------------------
def banner(nm, typ):
    sep = BANNER % (nm, typ)
    sys.stdout.write(sep)
    sys.stdout.flush()

def test_main_inner():
    rootLogger = logging.getLogger("")
    rootLogger.setLevel(logging.DEBUG)
    hdlr = logging.StreamHandler(sys.stdout)
    fmt = logging.Formatter(logging.BASIC_FORMAT)
    hdlr.setFormatter(fmt)
    rootLogger.addHandler(hdlr)

    # Find an unused port number
    port = logging.handlers.DEFAULT_TCP_LOGGING_PORT
    while port < logging.handlers.DEFAULT_TCP_LOGGING_PORT+100:
        try:
            tcpserver = LogRecordSocketReceiver(port=port)
        except socket.error:
            port += 1
        else:
            break
    else:
        raise ImportError, "Could not find unused port"


    #Set up a handler such that all events are sent via a socket to the log
    #receiver (logrecv).
    #The handler will only be added to the rootLogger for some of the tests
    shdlr = logging.handlers.SocketHandler('localhost', port)

    #Configure the logger for logrecv so events do not propagate beyond it.
    #The sockLogger output is buffered in memory until the end of the test,
    #and printed at the end.
    sockOut = cStringIO.StringIO()
    sockLogger = logging.getLogger("logrecv")
    sockLogger.setLevel(logging.DEBUG)
    sockhdlr = logging.StreamHandler(sockOut)
    sockhdlr.setFormatter(logging.Formatter(
                                   "%(name)s -> %(levelname)s: %(message)s"))
    sockLogger.addHandler(sockhdlr)
    sockLogger.propagate = 0

    #Set up servers
    threads = []
    #sys.stdout.write("About to start TCP server...\n")
    threads.append(threading.Thread(target=runTCP, args=(tcpserver,)))

    for thread in threads:
        thread.start()
    try:
        banner("log_test0", "begin")

        rootLogger.addHandler(shdlr)
        test0()
        # XXX(nnorwitz): Try to fix timing related test failures.
        # This sleep gives us some extra time to read messages.
        # The test generally only fails on Solaris without this sleep.
        time.sleep(2.0)
        shdlr.close()
        rootLogger.removeHandler(shdlr)

        banner("log_test0", "end")

        for t in range(1,6):
            banner("log_test%d" % t, "begin")
            globals()['test%d' % t]()
            banner("log_test%d" % t, "end")

    finally:
        #wait for TCP receiver to terminate
        socketDataProcessed.wait()
        # ensure the server dies
        tcpserver.abort = 1
        for thread in threads:
            thread.join(2.0)
        banner("logrecv output", "begin")
        sys.stdout.write(sockOut.getvalue())
        sockOut.close()
        sockLogger.removeHandler(sockhdlr)
        sockhdlr.close()
        banner("logrecv output", "end")
        sys.stdout.flush()
        try:
            hdlr.close()
        except:
            pass
        rootLogger.removeHandler(hdlr)

# Set the locale to the platform-dependent default.  I have no idea
# why the test does this, but in any case we save the current locale
# first and restore it at the end.
@run_with_locale('LC_ALL', '')
def test_main():
    # Save and restore the original root logger level across the tests.
    # Otherwise, e.g., if any test using cookielib runs after test_logging,
    # cookielib's debug-level logger tries to log messages, leading to
    # confusing:
    #    No handlers could be found for logger "cookielib"
    # output while the tests are running.
    root_logger = logging.getLogger("")
    original_logging_level = root_logger.getEffectiveLevel()
    try:
        test_main_inner()
    finally:
        root_logger.setLevel(original_logging_level)

if __name__ == "__main__":
    sys.stdout.write("test_logging\n")
    test_main()