23
23
Messages are classified by severity levels: critical, error, warning, info,
26
They can be sent to two places: stderr, and `$XDG_CACHE_HOME/breezy/brz.log`.
27
For purposes such as running the test suite, they can also be redirected away
28
from both of those two places to another location.
26
They can be sent to two places: to stderr, and to ~/.bzr.log. For purposes
27
such as running the test suite, they can also be redirected away from both of
28
those two places to another location.
30
`brz.log` gets all messages, and full tracebacks for uncaught exceptions.
30
~/.bzr.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.
56
54
# increased cost of logging.py is not so bad, and we could standardize on
65
from .lazy_import import lazy_import
63
from bzrlib.lazy_import import lazy_import
66
64
lazy_import(globals(), """
65
from cStringIO import StringIO
73
from bzrlib.symbol_versioning import (
73
78
lazy_import(globals(), """
92
# global verbosity for breezy; controls the log level for stderr; 0=normal; <0
90
# global verbosity for bzrlib; controls the log level for stderr; 0=normal; <0
93
91
# is quiet; >0 is verbose.
94
92
_verbosity_level = 0
99
97
# than push/pop_log_file.
100
98
_trace_file = None
102
# Absolute path for brz.log. Not changed even if the log/trace output is
100
# Absolute path for ~/.bzr.log. Not changed even if the log/trace output is
103
101
# redirected elsewhere. Used to show the location in --version.
104
_brz_log_filename = None
102
_bzr_log_filename = None
106
104
# The time the first message was written to the trace file, so that we can
107
105
# show relative times since startup.
108
_brz_log_start_time = breezy._start_time
106
_bzr_log_start_time = bzrlib._start_time
111
109
# held in a global for quick reference
112
_brz_logger = logging.getLogger('brz')
110
_bzr_logger = logging.getLogger('bzr')
115
113
def note(*args, **kwargs):
116
"""Output a note to the user.
118
Takes the same parameters as logging.info.
114
# FIXME note always emits utf-8, regardless of the terminal encoding
122
116
# FIXME: clearing the ui and then going through the abstract logging
123
117
# framework is whack; we should probably have a logging Handler that
124
118
# deals with terminal output if needed.
125
ui.ui_factory.clear_term()
126
_brz_logger.info(*args, **kwargs)
120
bzrlib.ui.ui_factory.clear_term()
121
_bzr_logger.info(*args, **kwargs)
129
124
def warning(*args, **kwargs):
130
ui.ui_factory.clear_term()
131
_brz_logger.warning(*args, **kwargs)
126
bzrlib.ui.ui_factory.clear_term()
127
_bzr_logger.warning(*args, **kwargs)
130
@deprecated_function(deprecated_in((2, 1, 0)))
131
def info(*args, **kwargs):
132
"""Deprecated: use trace.note instead."""
133
note(*args, **kwargs)
136
@deprecated_function(deprecated_in((2, 1, 0)))
137
def log_error(*args, **kwargs):
138
"""Deprecated: use bzrlib.trace.show_error instead"""
139
_bzr_logger.error(*args, **kwargs)
142
@deprecated_function(deprecated_in((2, 1, 0)))
143
def error(*args, **kwargs):
144
"""Deprecated: use bzrlib.trace.show_error instead"""
145
_bzr_logger.error(*args, **kwargs)
134
148
def show_error(*args, **kwargs):
157
161
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
160
# Let format strings be specified as ascii bytes to help Python 2
161
if isinstance(fmt, bytes):
162
fmt = fmt.decode('ascii', 'replace')
164
if isinstance(fmt, unicode):
165
fmt = fmt.encode('utf8')
167
_Bytes(arg) if isinstance(arg, bytes) else arg for arg in args)
168
# It seems that if we do ascii % (unicode, ascii) we can
169
# get a unicode cannot encode ascii error, so make sure that "fmt"
170
# is a unicode string
173
if isinstance(arg, unicode):
174
arg = arg.encode('utf8')
175
real_args.append(arg)
176
out = fmt % tuple(real_args)
171
179
now = time.time()
172
out = '%0.3f %s\n' % (now - _brz_log_start_time, out)
173
_trace_file.write(out.encode('utf-8'))
180
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
181
out = timestamp + out + '\n'
182
_trace_file.write(out)
174
183
# there's no explicit flushing; the file is typically line buffered.
208
def _get_brz_log_filename():
209
"""Return the brz log filename.
211
:return: A path to the log file
212
:raise EnvironmentError: If the cache directory could not be created
214
brz_log = osutils.path_from_environ('BRZ_LOG')
217
return os.path.join(bedding.cache_dir(), 'brz.log')
221
"""Open the brz.log trace file.
217
def _get_bzr_log_filename():
218
bzr_log = os.environ.get('BZR_LOG')
221
home = os.environ.get('BZR_HOME')
223
if sys.platform == 'win32':
224
from bzrlib import win32utils
225
home = win32utils.get_home_location()
227
home = os.path.expanduser('~')
228
return os.path.join(home, '.bzr.log')
232
"""Open the .bzr.log trace file.
223
234
If the log is more than a particular length, the old file is renamed to
224
brz.log.old and a new file is started. Otherwise, we append to the
235
.bzr.log.old and a new file is started. Otherwise, we append to the
227
This sets the global _brz_log_filename.
238
This sets the global _bzr_log_filename.
229
global _brz_log_filename
240
global _bzr_log_filename
231
242
def _open_or_create_log_file(filename):
232
243
"""Open existing log file, or create with ownership and permissions
241
252
fd = os.open(filename, flags)
244
255
if e.errno != errno.ENOENT:
247
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0o666)
258
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
249
260
if e.errno != errno.EEXIST:
252
263
osutils.copy_ownership_from_path(filename)
254
return os.fdopen(fd, 'ab', 0) # unbuffered
265
return os.fdopen(fd, 'at', 0) # unbuffered
268
_bzr_log_filename = _get_bzr_log_filename()
269
_rollover_trace_maybe(_bzr_log_filename)
257
_brz_log_filename = _get_brz_log_filename()
258
_rollover_trace_maybe(_brz_log_filename)
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:
264
b"this is a debug log for diagnosing/reporting problems in brz\n")
266
b"you can delete or truncate this file, or include sections in\n")
268
b"bug reports to https://bugs.launchpad.net/brz/+filebug\n\n")
272
except EnvironmentError as e:
271
bzr_log_file = _open_or_create_log_file(_bzr_log_filename)
272
bzr_log_file.write('\n')
273
if bzr_log_file.tell() <= 2:
274
bzr_log_file.write("this is a debug log for diagnosing/reporting problems in bzr\n")
275
bzr_log_file.write("you can delete or truncate this file, or include sections in\n")
276
bzr_log_file.write("bug reports to https://bugs.launchpad.net/bzr/+filebug\n\n")
280
except EnvironmentError, e:
273
281
# If we are failing to open the log, then most likely logging has not
274
282
# been set up yet. So we just write to stderr rather than using
275
283
# 'warning()'. If we using warning(), users get the unhelpful 'no
276
# handlers registered for "brz"' when something goes wrong on the
284
# handlers registered for "bzr"' when something goes wrong on the
277
285
# server. (bug #503886)
278
286
sys.stderr.write("failed to open trace file: %s\n" % (e,))
279
287
# TODO: What should happen if we fail to open the trace file? Maybe the
285
293
def enable_default_logging():
286
"""Configure default logging: messages to stderr and debug to brz.log
294
"""Configure default logging: messages to stderr and debug to .bzr.log
288
296
This should only be called once per process.
290
Non-command-line programs embedding breezy do not need to call this. They
298
Non-command-line programs embedding bzrlib do not need to call this. They
291
299
can instead either pass a file to _push_log_file, or act directly on
292
logging.getLogger("brz").
300
logging.getLogger("bzr").
294
302
Output can be redirected away by calling _push_log_file.
296
:return: A memento from push_log_file for restoring the log state.
298
start_time = osutils.format_local_date(_brz_log_start_time,
304
# Do this before we open the log file, so we prevent
305
# get_terminal_encoding() from mutter()ing multiple times
306
term_encoding = osutils.get_terminal_encoding()
307
start_time = osutils.format_local_date(_bzr_log_start_time,
299
308
timezone='local')
300
brz_log_file = _open_brz_log()
301
if brz_log_file is not None:
302
brz_log_file.write(start_time.encode('utf-8') + b'\n')
303
memento = push_log_file(
309
# create encoded wrapper around stderr
310
bzr_log_file = _open_bzr_log()
311
if bzr_log_file is not None:
312
bzr_log_file.write(start_time.encode('utf-8') + '\n')
313
push_log_file(bzr_log_file,
305
314
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
306
315
r'%Y-%m-%d %H:%M:%S')
307
# after hooking output into brz_log, we also need to attach a stderr
316
# after hooking output into bzr_log, we also need to attach a stderr
308
317
# handler, writing only at level info and with encoding
309
if sys.version_info[0] == 2:
310
stderr_handler = EncodedStreamHandler(
311
sys.stderr, osutils.get_terminal_encoding(), 'replace',
314
stderr_handler = logging.StreamHandler(stream=sys.stderr)
315
logging.getLogger('brz').addHandler(stderr_handler)
318
writer_factory = codecs.getwriter(term_encoding)
319
encoded_stderr = writer_factory(sys.stderr, errors='replace')
320
stderr_handler = logging.StreamHandler(encoded_stderr)
321
stderr_handler.setLevel(logging.INFO)
322
logging.getLogger('bzr').addHandler(stderr_handler)
319
325
def push_log_file(to_file, log_format=None, date_format=None):
322
328
:param to_file: A file-like object to which messages will be sent.
324
330
:returns: A memento that should be passed to _pop_log_file to restore the
325
previously active logging.
331
previously active logging.
327
333
global _trace_file
328
334
# make a new handler
329
new_handler = EncodedStreamHandler(to_file, "utf-8", level=logging.DEBUG)
335
new_handler = logging.StreamHandler(to_file)
336
new_handler.setLevel(logging.DEBUG)
330
337
if log_format is None:
331
338
log_format = '%(levelname)8s %(message)s'
332
339
new_handler.setFormatter(logging.Formatter(log_format, date_format))
333
340
# save and remove any existing log handlers
334
brz_logger = logging.getLogger('brz')
335
old_handlers = brz_logger.handlers[:]
336
del brz_logger.handlers[:]
341
bzr_logger = logging.getLogger('bzr')
342
old_handlers = bzr_logger.handlers[:]
343
del bzr_logger.handlers[:]
337
344
# set that as the default logger
338
brz_logger.addHandler(new_handler)
339
brz_logger.setLevel(logging.DEBUG)
345
bzr_logger.addHandler(new_handler)
346
bzr_logger.setLevel(logging.DEBUG)
340
347
# TODO: check if any changes are needed to the root logger
342
# TODO: also probably need to save and restore the level on brz_logger.
349
# TODO: also probably need to save and restore the level on bzr_logger.
343
350
# but maybe we can avoid setting the logger level altogether, and just set
344
351
# the level on the handler?
347
354
old_trace_file = _trace_file
348
355
# send traces to the new one
349
356
_trace_file = to_file
357
result = new_handler, _trace_file
350
358
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
353
def pop_log_file(entry):
361
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
354
362
"""Undo changes to logging/tracing done by _push_log_file.
356
This flushes, but does not close the trace file (so that anything that was
364
This flushes, but does not close the trace file.
359
366
Takes the memento returned from _push_log_file."""
360
(magic, old_handlers, new_handler, old_trace_file, new_trace_file) = entry
361
367
global _trace_file
362
368
_trace_file = old_trace_file
363
brz_logger = logging.getLogger('brz')
364
brz_logger.removeHandler(new_handler)
365
# must be closed, otherwise logging will try to close it at exit, and the
369
bzr_logger = logging.getLogger('bzr')
370
bzr_logger.removeHandler(new_handler)
371
# must be closed, otherwise logging will try to close it atexit, and the
366
372
# file will likely already be closed underneath.
367
373
new_handler.close()
368
brz_logger.handlers = old_handlers
369
if new_trace_file is not None:
370
new_trace_file.flush()
374
bzr_logger.handlers = old_handlers
375
new_trace_file.flush()
373
378
def log_exception_quietly():
460
def _dump_memory_usage(err_file):
463
fd, name = tempfile.mkstemp(prefix="brz_memdump", suffix=".json")
464
dump_file = os.fdopen(fd, 'w')
465
from meliae import scanner
466
scanner.dump_gc_objects(dump_file)
467
err_file.write("Memory dumped to %s\n" % name)
469
err_file.write("Dumping memory requires meliae module.\n")
470
log_exception_quietly()
471
except BaseException:
472
err_file.write("Exception while dumping memory.\n")
473
log_exception_quietly()
475
if dump_file is not None:
481
def _qualified_exception_name(eclass, unqualified_breezy_errors=False):
482
"""Give name of error class including module for non-builtin exceptions
484
If `unqualified_breezy_errors` is True, errors specific to breezy will
485
also omit the module prefix.
487
class_name = eclass.__name__
488
module_name = eclass.__module__
489
if module_name in ("builtins", "exceptions", "__main__") or (
490
unqualified_breezy_errors and module_name == "breezy.errors"):
492
return "%s.%s" % (module_name, class_name)
495
464
def report_exception(exc_info, err_file):
496
"""Report an exception to err_file (typically stderr) and to brz.log.
465
"""Report an exception to err_file (typically stderr) and to .bzr.log.
498
467
This will show either a full traceback or a short message as appropriate.
500
469
:return: The appropriate exit code for this error.
502
# Log the full traceback to brz.log
471
# Log the full traceback to ~/.bzr.log
503
472
log_exception_quietly()
504
473
if 'error' in debug.debug_flags:
505
474
print_exception(exc_info, err_file)
506
475
return errors.EXIT_ERROR
507
476
exc_type, exc_object, exc_tb = exc_info
508
if isinstance(exc_object, KeyboardInterrupt):
509
err_file.write("brz: interrupted\n")
477
if (isinstance(exc_object, IOError)
478
and getattr(exc_object, 'errno', None) == errno.EPIPE):
479
err_file.write("bzr: broken pipe\n")
480
return errors.EXIT_ERROR
481
elif isinstance(exc_object, KeyboardInterrupt):
482
err_file.write("bzr: interrupted\n")
510
483
return errors.EXIT_ERROR
511
484
elif isinstance(exc_object, MemoryError):
512
err_file.write("brz: out of memory\n")
513
if 'mem_dump' in debug.debug_flags:
514
_dump_memory_usage(err_file)
516
err_file.write("Use -Dmem_dump to dump memory to a file.\n")
485
err_file.write("bzr: out of memory\n")
517
486
return errors.EXIT_ERROR
518
487
elif isinstance(exc_object, ImportError) \
519
and str(exc_object).startswith("No module named "):
488
and str(exc_object).startswith("No module named "):
489
report_user_error(exc_info, err_file,
522
490
'You may need to install this Python library separately.')
523
491
return errors.EXIT_ERROR
524
492
elif not getattr(exc_object, 'internal_error', True):
525
493
report_user_error(exc_info, err_file)
526
494
return errors.EXIT_ERROR
527
elif osutils.is_environment_error(exc_object):
528
if getattr(exc_object, 'errno', None) == errno.EPIPE:
529
err_file.write("brz: broken pipe\n")
530
return errors.EXIT_ERROR
495
elif isinstance(exc_object, (OSError, IOError)):
531
496
# Might be nice to catch all of these and show them as something more
532
497
# specific, but there are too many cases at the moment.
533
498
report_user_error(exc_info, err_file)
540
505
def print_exception(exc_info, err_file):
541
506
exc_type, exc_object, exc_tb = exc_info
542
err_file.write("brz: ERROR: %s: %s\n" % (
543
_qualified_exception_name(exc_type), exc_object))
507
err_file.write("bzr: ERROR: %s.%s: %s\n" % (
508
exc_type.__module__, exc_type.__name__, exc_object))
544
509
err_file.write('\n')
545
510
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
555
520
:param advice: Extra advice to the user to be printed following the
558
err_file.write(("brz: ERROR: %s\n" % (str(exc_info[1]),)))
523
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
560
err_file.write(("%s\n" % advice))
525
err_file.write("%s\n" % (advice,))
563
528
def report_bug(exc_info, err_file):
564
"""Report an exception that probably indicates a bug in brz"""
565
from breezy.crash import report_bug
529
"""Report an exception that probably indicates a bug in bzr"""
530
from bzrlib.crash import report_bug
566
531
report_bug(exc_info, err_file)
569
534
def _flush_stdout_stderr():
570
# called from the breezy library finalizer returned by breezy.initialize()
535
# installed into an atexit hook by bzrlib.initialize()
572
537
sys.stdout.flush()
573
538
sys.stderr.flush()
575
# On Windows, I get ValueError calling stdout.flush() on a closed
580
541
if e.errno in [errno.EINVAL, errno.EPIPE]:
586
547
def _flush_trace():
587
# called from the breezy library finalizer returned by breezy.initialize()
548
# run from atexit hook
588
549
global _trace_file
590
551
_trace_file.flush()
593
class EncodedStreamHandler(logging.Handler):
594
"""Robustly write logging events to a stream using the specified encoding
596
Messages are expected to be formatted to unicode, but UTF-8 byte strings
597
are also accepted. An error during formatting or a str message in another
598
encoding will be quitely noted as an error in the Bazaar log file.
600
The stream is not closed so sys.stdout or sys.stderr may be passed.
603
def __init__(self, stream, encoding=None, errors='strict', level=0):
604
logging.Handler.__init__(self, level)
607
encoding = getattr(stream, "encoding", "ascii")
608
self.encoding = encoding
612
flush = getattr(self.stream, "flush", None)
613
if flush is not None:
616
def emit(self, record):
618
if not isinstance(record.msg, text_type):
619
msg = record.msg.decode("utf-8")
622
line = self.format(record)
623
if not isinstance(line, text_type):
624
line = line.decode("utf-8")
625
self.stream.write(line.encode(self.encoding, self.errors) + b"\n")
627
log_exception_quietly()
628
# Try saving the details that would have been logged in some form
629
msg = args = "<Unformattable>"
631
msg = repr(record.msg)
632
args = repr(record.args)
635
# Using mutter() bypasses the logging module and writes directly
636
# to the file so there's no danger of getting into a loop here.
637
mutter("Logging record unformattable: %s %% %s", msg, args)
640
class Config(object):
641
"""Configuration of message tracing in breezy.
643
This implements the context manager protocol and should manage any global
644
variables still used. The default config used is DefaultConfig, but
645
embedded uses of breezy may wish to use a custom manager.
649
return self # This is bound to the 'as' clause in a with statement.
651
def __exit__(self, exc_type, exc_val, exc_tb):
652
return False # propogate exceptions.
655
class DefaultConfig(Config):
656
"""A default configuration for tracing of messages in breezy.
658
This implements the context manager protocol.
662
self._original_filename = _brz_log_filename
663
self._original_state = enable_default_logging()
664
return self # This is bound to the 'as' clause in a with statement.
666
def __exit__(self, exc_type, exc_val, exc_tb):
667
pop_log_file(self._original_state)
668
global _brz_log_filename
669
_brz_log_filename = self._original_filename
670
return False # propogate exceptions.