23
23
Messages are classified by severity levels: critical, error, warning, info,
26
They can be sent to two places: to stderr, and to ~/.bzr.log. For purposes
26
They can be sent to two places: to stderr, and to ~/.brz.log. For purposes
27
27
such as running the test suite, they can also be redirected away from both of
28
28
those two places to another location.
30
~/.bzr.log gets all messages, and full tracebacks for uncaught exceptions.
30
~/.brz.log gets all messages, and full tracebacks for uncaught exceptions.
31
31
This trace file is always in UTF-8, regardless of the user's default encoding,
32
32
so that we can always rely on writing any message.
54
56
# increased cost of logging.py is not so bad, and we could standardize on
63
from bzrlib.lazy_import import lazy_import
65
from .lazy_import import lazy_import
64
66
lazy_import(globals(), """
65
from cStringIO import StringIO
73
from bzrlib.symbol_versioning import (
78
74
lazy_import(globals(), """
90
# global verbosity for bzrlib; controls the log level for stderr; 0=normal; <0
91
# global verbosity for breezy; controls the log level for stderr; 0=normal; <0
91
92
# is quiet; >0 is verbose.
92
93
_verbosity_level = 0
97
98
# than push/pop_log_file.
100
# Absolute path for ~/.bzr.log. Not changed even if the log/trace output is
101
# Absolute path for ~/.brz.log. Not changed even if the log/trace output is
101
102
# redirected elsewhere. Used to show the location in --version.
102
_bzr_log_filename = None
103
_brz_log_filename = None
104
105
# The time the first message was written to the trace file, so that we can
105
106
# show relative times since startup.
106
_bzr_log_start_time = bzrlib._start_time
107
_brz_log_start_time = breezy._start_time
109
110
# held in a global for quick reference
110
_bzr_logger = logging.getLogger('bzr')
111
_brz_logger = logging.getLogger('brz')
113
114
def note(*args, **kwargs):
120
# FIXME note always emits utf-8, regardless of the terminal encoding
122
121
# FIXME: clearing the ui and then going through the abstract logging
123
122
# framework is whack; we should probably have a logging Handler that
124
123
# deals with terminal output if needed.
126
bzrlib.ui.ui_factory.clear_term()
127
_bzr_logger.info(*args, **kwargs)
124
ui.ui_factory.clear_term()
125
_brz_logger.info(*args, **kwargs)
130
128
def warning(*args, **kwargs):
132
bzrlib.ui.ui_factory.clear_term()
133
_bzr_logger.warning(*args, **kwargs)
136
@deprecated_function(deprecated_in((2, 1, 0)))
137
def info(*args, **kwargs):
138
"""Deprecated: use trace.note instead."""
139
note(*args, **kwargs)
142
@deprecated_function(deprecated_in((2, 1, 0)))
143
def log_error(*args, **kwargs):
144
"""Deprecated: use bzrlib.trace.show_error instead"""
145
_bzr_logger.error(*args, **kwargs)
148
@deprecated_function(deprecated_in((2, 1, 0)))
149
def error(*args, **kwargs):
150
"""Deprecated: use bzrlib.trace.show_error instead"""
151
_bzr_logger.error(*args, **kwargs)
129
ui.ui_factory.clear_term()
130
_brz_logger.warning(*args, **kwargs)
154
133
def show_error(*args, **kwargs):
157
136
Don't use this for exceptions, use report_exception instead.
159
_bzr_logger.error(*args, **kwargs)
138
_brz_logger.error(*args, **kwargs)
142
"""Compat class for displaying bytes on Python 2."""
145
return 'b' + str.__repr__(self)
147
def __unicode__(self):
148
return self.decode('ascii', 'replace')
162
151
def mutter(fmt, *args):
167
156
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
170
if isinstance(fmt, unicode):
171
fmt = fmt.encode('utf8')
159
# Let format strings be specified as ascii bytes to help Python 2
160
if isinstance(fmt, bytes):
161
fmt = fmt.decode('ascii', 'replace')
174
# It seems that if we do ascii % (unicode, ascii) we can
175
# get a unicode cannot encode ascii error, so make sure that "fmt"
176
# is a unicode string
179
if isinstance(arg, unicode):
180
arg = arg.encode('utf8')
181
real_args.append(arg)
182
out = fmt % tuple(real_args)
166
_Bytes(arg) if isinstance(arg, bytes) else arg for arg in args)
185
170
now = time.time()
186
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
187
out = timestamp + out + '\n'
188
_trace_file.write(out)
171
out = '%0.3f %s\n' % (now - _brz_log_start_time, out)
172
_trace_file.write(out.encode('utf-8'))
189
173
# there's no explicit flushing; the file is typically line buffered.
223
def _get_bzr_log_filename():
224
bzr_log = os.environ.get('BZR_LOG')
227
home = os.environ.get('BZR_HOME')
207
def _get_brz_log_filename():
208
brz_log = osutils.path_from_environ('BRZ_LOG')
211
home = osutils.path_from_environ('BRZ_HOME')
229
if sys.platform == 'win32':
230
from bzrlib import win32utils
231
home = win32utils.get_home_location()
233
home = os.path.expanduser('~')
234
return os.path.join(home, '.bzr.log')
238
"""Open the .bzr.log trace file.
213
# GZ 2012-02-01: Logging to the home dir is bad, but XDG is unclear
214
# over what would be better. On windows, bug 240550
215
# suggests LOCALAPPDATA be used instead.
216
home = osutils._get_home_dir()
217
return os.path.join(home, '.brz.log')
221
"""Open the .brz.log trace file.
240
223
If the log is more than a particular length, the old file is renamed to
241
.bzr.log.old and a new file is started. Otherwise, we append to the
224
.brz.log.old and a new file is started. Otherwise, we append to the
244
This sets the global _bzr_log_filename.
227
This sets the global _brz_log_filename.
246
global _bzr_log_filename
229
global _brz_log_filename
248
231
def _open_or_create_log_file(filename):
249
232
"""Open existing log file, or create with ownership and permissions
258
241
fd = os.open(filename, flags)
261
244
if e.errno != errno.ENOENT:
264
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
247
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0o666)
266
249
if e.errno != errno.EEXIST:
269
252
osutils.copy_ownership_from_path(filename)
271
return os.fdopen(fd, 'at', 0) # unbuffered
274
_bzr_log_filename = _get_bzr_log_filename()
275
_rollover_trace_maybe(_bzr_log_filename)
254
return os.fdopen(fd, 'ab', 0) # unbuffered
257
_brz_log_filename = _get_brz_log_filename()
258
_rollover_trace_maybe(_brz_log_filename)
277
bzr_log_file = _open_or_create_log_file(_bzr_log_filename)
278
bzr_log_file.write('\n')
279
if bzr_log_file.tell() <= 2:
280
bzr_log_file.write("this is a debug log for diagnosing/reporting problems in bzr\n")
281
bzr_log_file.write("you can delete or truncate this file, or include sections in\n")
282
bzr_log_file.write("bug reports to https://bugs.launchpad.net/bzr/+filebug\n\n")
286
except EnvironmentError, e:
260
brz_log_file = _open_or_create_log_file(_brz_log_filename)
261
brz_log_file.write(b'\n')
262
if brz_log_file.tell() <= 2:
263
brz_log_file.write(b"this is a debug log for diagnosing/reporting problems in brz\n")
264
brz_log_file.write(b"you can delete or truncate this file, or include sections in\n")
265
brz_log_file.write(b"bug reports to https://bugs.launchpad.net/brz/+filebug\n\n")
269
except EnvironmentError as e:
287
270
# If we are failing to open the log, then most likely logging has not
288
271
# been set up yet. So we just write to stderr rather than using
289
272
# 'warning()'. If we using warning(), users get the unhelpful 'no
290
# handlers registered for "bzr"' when something goes wrong on the
273
# handlers registered for "brz"' when something goes wrong on the
291
274
# server. (bug #503886)
292
275
sys.stderr.write("failed to open trace file: %s\n" % (e,))
293
276
# TODO: What should happen if we fail to open the trace file? Maybe the
299
282
def enable_default_logging():
300
"""Configure default logging: messages to stderr and debug to .bzr.log
283
"""Configure default logging: messages to stderr and debug to .brz.log
302
285
This should only be called once per process.
304
Non-command-line programs embedding bzrlib do not need to call this. They
287
Non-command-line programs embedding breezy do not need to call this. They
305
288
can instead either pass a file to _push_log_file, or act directly on
306
logging.getLogger("bzr").
289
logging.getLogger("brz").
308
291
Output can be redirected away by calling _push_log_file.
293
:return: A memento from push_log_file for restoring the log state.
310
# Do this before we open the log file, so we prevent
311
# get_terminal_encoding() from mutter()ing multiple times
312
term_encoding = osutils.get_terminal_encoding()
313
start_time = osutils.format_local_date(_bzr_log_start_time,
295
start_time = osutils.format_local_date(_brz_log_start_time,
314
296
timezone='local')
315
# create encoded wrapper around stderr
316
bzr_log_file = _open_bzr_log()
317
if bzr_log_file is not None:
318
bzr_log_file.write(start_time.encode('utf-8') + '\n')
319
push_log_file(bzr_log_file,
297
brz_log_file = _open_brz_log()
298
if brz_log_file is not None:
299
brz_log_file.write(start_time.encode('utf-8') + b'\n')
300
memento = push_log_file(brz_log_file,
320
301
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
321
302
r'%Y-%m-%d %H:%M:%S')
322
# after hooking output into bzr_log, we also need to attach a stderr
303
# after hooking output into brz_log, we also need to attach a stderr
323
304
# handler, writing only at level info and with encoding
324
writer_factory = codecs.getwriter(term_encoding)
325
encoded_stderr = writer_factory(sys.stderr, errors='replace')
326
stderr_handler = logging.StreamHandler(encoded_stderr)
327
stderr_handler.setLevel(logging.INFO)
328
logging.getLogger('bzr').addHandler(stderr_handler)
305
if sys.version_info[0] == 2:
306
stderr_handler = EncodedStreamHandler(sys.stderr,
307
osutils.get_terminal_encoding(), 'replace', level=logging.INFO)
309
stderr_handler = logging.StreamHandler(stream=sys.stderr)
310
logging.getLogger('brz').addHandler(stderr_handler)
331
314
def push_log_file(to_file, log_format=None, date_format=None):
334
317
:param to_file: A file-like object to which messages will be sent.
336
319
:returns: A memento that should be passed to _pop_log_file to restore the
337
previously active logging.
320
previously active logging.
339
322
global _trace_file
340
323
# make a new handler
341
new_handler = logging.StreamHandler(to_file)
342
new_handler.setLevel(logging.DEBUG)
324
new_handler = EncodedStreamHandler(to_file, "utf-8", level=logging.DEBUG)
343
325
if log_format is None:
344
326
log_format = '%(levelname)8s %(message)s'
345
327
new_handler.setFormatter(logging.Formatter(log_format, date_format))
346
328
# save and remove any existing log handlers
347
bzr_logger = logging.getLogger('bzr')
348
old_handlers = bzr_logger.handlers[:]
349
del bzr_logger.handlers[:]
329
brz_logger = logging.getLogger('brz')
330
old_handlers = brz_logger.handlers[:]
331
del brz_logger.handlers[:]
350
332
# set that as the default logger
351
bzr_logger.addHandler(new_handler)
352
bzr_logger.setLevel(logging.DEBUG)
333
brz_logger.addHandler(new_handler)
334
brz_logger.setLevel(logging.DEBUG)
353
335
# TODO: check if any changes are needed to the root logger
355
# TODO: also probably need to save and restore the level on bzr_logger.
337
# TODO: also probably need to save and restore the level on brz_logger.
356
338
# but maybe we can avoid setting the logger level altogether, and just set
357
339
# the level on the handler?
364
346
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
367
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
349
def pop_log_file(entry):
368
350
"""Undo changes to logging/tracing done by _push_log_file.
370
This flushes, but does not close the trace file.
352
This flushes, but does not close the trace file (so that anything that was
372
355
Takes the memento returned from _push_log_file."""
356
(magic, old_handlers, new_handler, old_trace_file, new_trace_file) = entry
373
357
global _trace_file
374
358
_trace_file = old_trace_file
375
bzr_logger = logging.getLogger('bzr')
376
bzr_logger.removeHandler(new_handler)
377
# must be closed, otherwise logging will try to close it atexit, and the
359
brz_logger = logging.getLogger('brz')
360
brz_logger.removeHandler(new_handler)
361
# must be closed, otherwise logging will try to close it at exit, and the
378
362
# file will likely already be closed underneath.
379
363
new_handler.close()
380
bzr_logger.handlers = old_handlers
381
new_trace_file.flush()
364
brz_logger.handlers = old_handlers
365
if new_trace_file is not None:
366
new_trace_file.flush()
384
369
def log_exception_quietly():
438
423
def debug_memory(message='', short=True):
439
424
"""Write out a memory dump."""
440
425
if sys.platform == 'win32':
441
from bzrlib import win32utils
426
from breezy import win32utils
442
427
win32utils.debug_memory_win32api(message=message, short=short)
444
429
_debug_memory_proc(message=message, short=short)
454
def _dump_memory_usage(err_file):
457
fd, name = tempfile.mkstemp(prefix="brz_memdump", suffix=".json")
458
dump_file = os.fdopen(fd, 'w')
459
from meliae import scanner
460
scanner.dump_gc_objects(dump_file)
461
err_file.write("Memory dumped to %s\n" % name)
463
err_file.write("Dumping memory requires meliae module.\n")
464
log_exception_quietly()
466
err_file.write("Exception while dumping memory.\n")
467
log_exception_quietly()
469
if dump_file is not None:
475
def _qualified_exception_name(eclass, unqualified_breezy_errors=False):
476
"""Give name of error class including module for non-builtin exceptions
478
If `unqualified_breezy_errors` is True, errors specific to breezy will
479
also omit the module prefix.
481
class_name = eclass.__name__
482
module_name = eclass.__module__
483
if module_name in ("builtins", "exceptions", "__main__") or (
484
unqualified_breezy_errors and module_name == "breezy.errors"):
486
return "%s.%s" % (module_name, class_name)
470
489
def report_exception(exc_info, err_file):
471
"""Report an exception to err_file (typically stderr) and to .bzr.log.
490
"""Report an exception to err_file (typically stderr) and to .brz.log.
473
492
This will show either a full traceback or a short message as appropriate.
475
494
:return: The appropriate exit code for this error.
477
# Log the full traceback to ~/.bzr.log
496
# Log the full traceback to ~/.brz.log
478
497
log_exception_quietly()
479
498
if 'error' in debug.debug_flags:
480
499
print_exception(exc_info, err_file)
481
500
return errors.EXIT_ERROR
482
501
exc_type, exc_object, exc_tb = exc_info
483
if (isinstance(exc_object, IOError)
484
and getattr(exc_object, 'errno', None) == errno.EPIPE):
485
err_file.write("bzr: broken pipe\n")
486
return errors.EXIT_ERROR
487
elif isinstance(exc_object, KeyboardInterrupt):
488
err_file.write("bzr: interrupted\n")
502
if isinstance(exc_object, KeyboardInterrupt):
503
err_file.write("brz: interrupted\n")
489
504
return errors.EXIT_ERROR
490
505
elif isinstance(exc_object, MemoryError):
491
err_file.write("bzr: out of memory\n")
506
err_file.write("brz: out of memory\n")
507
if 'mem_dump' in debug.debug_flags:
508
_dump_memory_usage(err_file)
510
err_file.write("Use -Dmem_dump to dump memory to a file.\n")
492
511
return errors.EXIT_ERROR
493
512
elif isinstance(exc_object, ImportError) \
494
513
and str(exc_object).startswith("No module named "):
498
517
elif not getattr(exc_object, 'internal_error', True):
499
518
report_user_error(exc_info, err_file)
500
519
return errors.EXIT_ERROR
501
elif isinstance(exc_object, (OSError, IOError)):
520
elif osutils.is_environment_error(exc_object):
521
if getattr(exc_object, 'errno', None) == errno.EPIPE:
522
err_file.write("brz: broken pipe\n")
523
return errors.EXIT_ERROR
502
524
# Might be nice to catch all of these and show them as something more
503
525
# specific, but there are too many cases at the moment.
504
526
report_user_error(exc_info, err_file)
511
533
def print_exception(exc_info, err_file):
512
534
exc_type, exc_object, exc_tb = exc_info
513
err_file.write("bzr: ERROR: %s.%s: %s\n" % (
514
exc_type.__module__, exc_type.__name__, exc_object))
535
err_file.write("brz: ERROR: %s: %s\n" % (
536
_qualified_exception_name(exc_type), exc_object))
515
537
err_file.write('\n')
516
538
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
526
548
:param advice: Extra advice to the user to be printed following the
529
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
551
err_file.write(("brz: ERROR: %s\n" % (str(exc_info[1]),)))
531
err_file.write("%s\n" % (advice,))
553
err_file.write(("%s\n" % advice))
534
556
def report_bug(exc_info, err_file):
535
"""Report an exception that probably indicates a bug in bzr"""
536
from bzrlib.crash import report_bug
557
"""Report an exception that probably indicates a bug in brz"""
558
from breezy.crash import report_bug
537
559
report_bug(exc_info, err_file)
540
562
def _flush_stdout_stderr():
541
# installed into an atexit hook by bzrlib.initialize()
563
# called from the breezy library finalizer returned by breezy.initialize()
543
565
sys.stdout.flush()
544
566
sys.stderr.flush()
567
except ValueError as e:
568
# On Windows, I get ValueError calling stdout.flush() on a closed
547
573
if e.errno in [errno.EINVAL, errno.EPIPE]:
553
579
def _flush_trace():
554
# run from atexit hook
580
# called from the breezy library finalizer returned by breezy.initialize()
555
581
global _trace_file
557
583
_trace_file.flush()
586
class EncodedStreamHandler(logging.Handler):
587
"""Robustly write logging events to a stream using the specified encoding
589
Messages are expected to be formatted to unicode, but UTF-8 byte strings
590
are also accepted. An error during formatting or a str message in another
591
encoding will be quitely noted as an error in the Bazaar log file.
593
The stream is not closed so sys.stdout or sys.stderr may be passed.
596
def __init__(self, stream, encoding=None, errors='strict', level=0):
597
logging.Handler.__init__(self, level)
600
encoding = getattr(stream, "encoding", "ascii")
601
self.encoding = encoding
605
flush = getattr(self.stream, "flush", None)
606
if flush is not None:
609
def emit(self, record):
611
if not isinstance(record.msg, text_type):
612
msg = record.msg.decode("utf-8")
615
line = self.format(record)
616
if not isinstance(line, text_type):
617
line = line.decode("utf-8")
618
self.stream.write(line.encode(self.encoding, self.errors) + b"\n")
620
log_exception_quietly()
621
# Try saving the details that would have been logged in some form
622
msg = args = "<Unformattable>"
624
msg = repr(record.msg)
625
args = repr(record.args)
628
# Using mutter() bypasses the logging module and writes directly
629
# to the file so there's no danger of getting into a loop here.
630
mutter("Logging record unformattable: %s %% %s", msg, args)
633
class Config(object):
634
"""Configuration of message tracing in breezy.
636
This implements the context manager protocol and should manage any global
637
variables still used. The default config used is DefaultConfig, but
638
embedded uses of breezy may wish to use a custom manager.
642
return self # This is bound to the 'as' clause in a with statement.
644
def __exit__(self, exc_type, exc_val, exc_tb):
645
return False # propogate exceptions.
648
class DefaultConfig(Config):
649
"""A default configuration for tracing of messages in breezy.
651
This implements the context manager protocol.
655
self._original_filename = _brz_log_filename
656
self._original_state = enable_default_logging()
657
return self # This is bound to the 'as' clause in a with statement.
659
def __exit__(self, exc_type, exc_val, exc_tb):
660
pop_log_file(self._original_state)
661
global _brz_log_filename
662
_brz_log_filename = self._original_filename
663
return False # propogate exceptions.