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.
34
34
Output to stderr depends on the mode chosen by the user. By default, messages
35
35
of info and above are sent out, which results in progress messages such as the
36
list of files processed by add and commit. In debug mode, stderr gets debug messages too.
36
list of files processed by add and commit. In quiet mode, only warnings and
37
above are shown. In debug mode, stderr gets debug messages too.
38
39
Errors that terminate an operation are generally passed back as exceptions;
39
40
others may be just emitted as messages.
92
93
# than push/pop_log_file.
95
# Absolute path for brz.log. Not changed even if the log/trace output is
96
# Absolute path for ~/.bzr.log. Not changed even if the log/trace output is
96
97
# redirected elsewhere. Used to show the location in --version.
97
_brz_log_filename = None
98
_bzr_log_filename = None
99
100
# The time the first message was written to the trace file, so that we can
100
101
# show relative times since startup.
101
_brz_log_start_time = breezy._start_time
102
_bzr_log_start_time = bzrlib._start_time
104
105
# held in a global for quick reference
105
_brz_logger = logging.getLogger('brz')
106
_bzr_logger = logging.getLogger('bzr')
108
109
def note(*args, **kwargs):
109
"""Output a note to the user.
111
Takes the same parameters as logging.info.
110
# FIXME note always emits utf-8, regardless of the terminal encoding
115
112
# FIXME: clearing the ui and then going through the abstract logging
116
113
# framework is whack; we should probably have a logging Handler that
117
114
# deals with terminal output if needed.
118
ui.ui_factory.clear_term()
119
_brz_logger.info(*args, **kwargs)
116
bzrlib.ui.ui_factory.clear_term()
117
_bzr_logger.info(*args, **kwargs)
122
120
def warning(*args, **kwargs):
123
ui.ui_factory.clear_term()
124
_brz_logger.warning(*args, **kwargs)
127
def show_error(*args, **kwargs):
128
"""Show an error message to the user.
130
Don't use this for exceptions, use report_exception instead.
132
_brz_logger.error(*args, **kwargs)
136
"""Compat class for displaying bytes on Python 2."""
139
return 'b' + str.__repr__(self)
141
def __unicode__(self):
142
return self.decode('ascii', 'replace')
122
bzrlib.ui.ui_factory.clear_term()
123
_bzr_logger.warning(*args, **kwargs)
126
# configure convenient aliases for output routines
128
# TODO: deprecate them, have one name for each.
130
log_error = _bzr_logger.error
131
error = _bzr_logger.error
134
_last_mutter_flush_time = None
145
136
def mutter(fmt, *args):
137
global _last_mutter_flush_time
146
138
if _trace_file is None:
148
# XXX: Don't check this every time; instead anyone who closes the file
149
# ought to deregister it. We can tolerate None.
150
140
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
153
# Let format strings be specified as ascii bytes to help Python 2
154
if isinstance(fmt, bytes):
155
fmt = fmt.decode('ascii', 'replace')
143
if isinstance(fmt, unicode):
144
fmt = fmt.encode('utf8')
147
# It seems that if we do ascii % (unicode, ascii) we can
148
# get a unicode cannot encode ascii error, so make sure that "fmt"
149
# is a unicode string
152
if isinstance(arg, unicode):
153
arg = arg.encode('utf8')
154
real_args.append(arg)
155
out = fmt % tuple(real_args)
161
158
now = time.time()
162
out = '%0.3f %s\n' % (now - _brz_log_start_time, out)
163
_trace_file.write(out.encode('utf-8'))
164
# there's no explicit flushing; the file is typically line buffered.
159
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
160
out = timestamp + out + '\n'
161
_trace_file.write(out)
162
# We flush if we haven't flushed for a few seconds. We don't want to flush
163
# on every mutter, but when a command takes a while, it can be nice to see
164
# updates in the debug log.
165
if (_last_mutter_flush_time is None
166
or (now - _last_mutter_flush_time) > 2.0):
167
flush = getattr(_trace_file, 'flush', None)
168
if flush is not None:
170
_last_mutter_flush_time = now
167
173
def mutter_callsite(stacklevel, fmt, *args):
198
def _get_brz_log_filename():
199
"""Return the brz log filename.
201
:return: A path to the log file
202
:raise EnvironmentError: If the cache directory could not be created
204
brz_log = os.environ.get('BRZ_LOG')
207
return os.path.join(bedding.cache_dir(), 'brz.log')
211
"""Open the brz.log trace file.
204
def _get_bzr_log_filename():
205
bzr_log = os.environ.get('BZR_LOG')
208
home = os.environ.get('BZR_HOME')
210
if sys.platform == 'win32':
211
from bzrlib import win32utils
212
home = win32utils.get_home_location()
214
home = os.path.expanduser('~')
215
return os.path.join(home, '.bzr.log')
219
"""Open the .bzr.log trace file.
213
221
If the log is more than a particular length, the old file is renamed to
214
brz.log.old and a new file is started. Otherwise, we append to the
222
.bzr.log.old and a new file is started. Otherwise, we append to the
217
This sets the global _brz_log_filename.
225
This sets the global _bzr_log_filename.
219
global _brz_log_filename
221
def _open_or_create_log_file(filename):
222
"""Open existing log file, or create with ownership and permissions
224
It inherits the ownership and permissions (masked by umask) from
225
the containing directory to cope better with being run under sudo
226
with $HOME still set to the user's homedir.
228
flags = os.O_WRONLY | os.O_APPEND | osutils.O_TEXT
231
fd = os.open(filename, flags)
234
if e.errno != errno.ENOENT:
237
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0o666)
239
if e.errno != errno.EEXIST:
242
osutils.copy_ownership_from_path(filename)
244
return os.fdopen(fd, 'ab', 0) # unbuffered
227
global _bzr_log_filename
228
_bzr_log_filename = _get_bzr_log_filename()
229
_rollover_trace_maybe(_bzr_log_filename)
247
_brz_log_filename = _get_brz_log_filename()
248
_rollover_trace_maybe(_brz_log_filename)
250
brz_log_file = _open_or_create_log_file(_brz_log_filename)
251
brz_log_file.write(b'\n')
252
if brz_log_file.tell() <= 2:
254
b"this is a debug log for diagnosing/reporting problems in brz\n")
256
b"you can delete or truncate this file, or include sections in\n")
258
b"bug reports to https://bugs.launchpad.net/brz/+filebug\n\n")
262
except EnvironmentError as e:
263
# If we are failing to open the log, then most likely logging has not
264
# been set up yet. So we just write to stderr rather than using
265
# 'warning()'. If we using warning(), users get the unhelpful 'no
266
# handlers registered for "brz"' when something goes wrong on the
267
# server. (bug #503886)
268
sys.stderr.write("failed to open trace file: %s\n" % (e,))
231
bzr_log_file = open(_bzr_log_filename, 'at', 1) # line buffered
232
# bzr_log_file.tell() on windows always return 0 until some writing done
233
bzr_log_file.write('\n')
234
if bzr_log_file.tell() <= 2:
235
bzr_log_file.write("this is a debug log for diagnosing/reporting problems in bzr\n")
236
bzr_log_file.write("you can delete or truncate this file, or include sections in\n")
237
bzr_log_file.write("bug reports to https://bugs.launchpad.net/bzr/+filebug\n\n")
240
warning("failed to open trace file: %s" % (e))
269
241
# TODO: What should happen if we fail to open the trace file? Maybe the
270
242
# objects should be pointed at /dev/null or the equivalent? Currently
271
243
# returns None which will cause failures later.
275
247
def enable_default_logging():
276
"""Configure default logging: messages to stderr and debug to brz.log
248
"""Configure default logging: messages to stderr and debug to .bzr.log
278
250
This should only be called once per process.
280
Non-command-line programs embedding breezy do not need to call this. They
252
Non-command-line programs embedding bzrlib do not need to call this. They
281
253
can instead either pass a file to _push_log_file, or act directly on
282
logging.getLogger("brz").
254
logging.getLogger("bzr").
284
256
Output can be redirected away by calling _push_log_file.
286
:return: A memento from push_log_file for restoring the log state.
288
start_time = osutils.format_local_date(_brz_log_start_time,
258
# Do this before we open the log file, so we prevent
259
# get_terminal_encoding() from mutter()ing multiple times
260
term_encoding = osutils.get_terminal_encoding()
261
start_time = osutils.format_local_date(_bzr_log_start_time,
289
262
timezone='local')
290
brz_log_file = _open_brz_log()
291
if brz_log_file is not None:
292
brz_log_file.write(start_time.encode('utf-8') + b'\n')
293
memento = push_log_file(
263
# create encoded wrapper around stderr
264
bzr_log_file = _open_bzr_log()
265
if bzr_log_file is not None:
266
bzr_log_file.write(start_time.encode('utf-8') + '\n')
267
push_log_file(bzr_log_file,
295
268
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
296
269
r'%Y-%m-%d %H:%M:%S')
297
# after hooking output into brz_log, we also need to attach a stderr
270
# after hooking output into bzr_log, we also need to attach a stderr
298
271
# handler, writing only at level info and with encoding
299
stderr_handler = logging.StreamHandler(stream=sys.stderr)
300
logging.getLogger('brz').addHandler(stderr_handler)
272
writer_factory = codecs.getwriter(term_encoding)
273
encoded_stderr = writer_factory(sys.stderr, errors='replace')
274
stderr_handler = logging.StreamHandler(encoded_stderr)
275
stderr_handler.setLevel(logging.INFO)
276
logging.getLogger('bzr').addHandler(stderr_handler)
304
279
def push_log_file(to_file, log_format=None, date_format=None):
307
282
:param to_file: A file-like object to which messages will be sent.
309
284
:returns: A memento that should be passed to _pop_log_file to restore the
310
previously active logging.
285
previously active logging.
312
287
global _trace_file
313
288
# make a new handler
314
new_handler = EncodedStreamHandler(to_file, "utf-8", level=logging.DEBUG)
289
new_handler = logging.StreamHandler(to_file)
290
new_handler.setLevel(logging.DEBUG)
315
291
if log_format is None:
316
292
log_format = '%(levelname)8s %(message)s'
317
293
new_handler.setFormatter(logging.Formatter(log_format, date_format))
318
294
# save and remove any existing log handlers
319
brz_logger = logging.getLogger('brz')
320
old_handlers = brz_logger.handlers[:]
321
del brz_logger.handlers[:]
295
bzr_logger = logging.getLogger('bzr')
296
old_handlers = bzr_logger.handlers[:]
297
del bzr_logger.handlers[:]
322
298
# set that as the default logger
323
brz_logger.addHandler(new_handler)
324
brz_logger.setLevel(logging.DEBUG)
299
bzr_logger.addHandler(new_handler)
300
bzr_logger.setLevel(logging.DEBUG)
325
301
# TODO: check if any changes are needed to the root logger
327
# TODO: also probably need to save and restore the level on brz_logger.
303
# TODO: also probably need to save and restore the level on bzr_logger.
328
304
# but maybe we can avoid setting the logger level altogether, and just set
329
305
# the level on the handler?
332
308
old_trace_file = _trace_file
333
309
# send traces to the new one
334
310
_trace_file = to_file
311
result = new_handler, _trace_file
335
312
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
338
def pop_log_file(entry):
315
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
339
316
"""Undo changes to logging/tracing done by _push_log_file.
341
This flushes, but does not close the trace file (so that anything that was
318
This flushes, but does not close the trace file.
344
320
Takes the memento returned from _push_log_file."""
345
(magic, old_handlers, new_handler, old_trace_file, new_trace_file) = entry
346
321
global _trace_file
347
322
_trace_file = old_trace_file
348
brz_logger = logging.getLogger('brz')
349
brz_logger.removeHandler(new_handler)
350
# must be closed, otherwise logging will try to close it at exit, and the
323
bzr_logger = logging.getLogger('bzr')
324
bzr_logger.removeHandler(new_handler)
325
# must be closed, otherwise logging will try to close it atexit, and the
351
326
# file will likely already be closed underneath.
352
327
new_handler.close()
353
brz_logger.handlers = old_handlers
354
if new_trace_file is not None:
355
new_trace_file.flush()
328
bzr_logger.handlers = old_handlers
329
new_trace_file.flush()
358
332
def log_exception_quietly():
445
def _dump_memory_usage(err_file):
448
fd, name = tempfile.mkstemp(prefix="brz_memdump", suffix=".json")
449
dump_file = os.fdopen(fd, 'w')
450
from meliae import scanner
451
scanner.dump_gc_objects(dump_file)
452
err_file.write("Memory dumped to %s\n" % name)
454
err_file.write("Dumping memory requires meliae module.\n")
455
log_exception_quietly()
456
except BaseException:
457
err_file.write("Exception while dumping memory.\n")
458
log_exception_quietly()
460
if dump_file is not None:
466
def _qualified_exception_name(eclass, unqualified_breezy_errors=False):
467
"""Give name of error class including module for non-builtin exceptions
469
If `unqualified_breezy_errors` is True, errors specific to breezy will
470
also omit the module prefix.
472
class_name = eclass.__name__
473
module_name = eclass.__module__
474
if module_name in ("builtins", "exceptions", "__main__") or (
475
unqualified_breezy_errors and module_name == "breezy.errors"):
477
return "%s.%s" % (module_name, class_name)
480
418
def report_exception(exc_info, err_file):
481
"""Report an exception to err_file (typically stderr) and to brz.log.
419
"""Report an exception to err_file (typically stderr) and to .bzr.log.
483
421
This will show either a full traceback or a short message as appropriate.
485
423
:return: The appropriate exit code for this error.
487
# Log the full traceback to brz.log
425
exc_type, exc_object, exc_tb = exc_info
426
# Log the full traceback to ~/.bzr.log
488
427
log_exception_quietly()
489
if 'error' in debug.debug_flags:
490
print_exception(exc_info, err_file)
491
return errors.EXIT_ERROR
492
exc_type, exc_object, exc_tb = exc_info
493
if isinstance(exc_object, KeyboardInterrupt):
494
err_file.write("brz: interrupted\n")
495
return errors.EXIT_ERROR
496
elif isinstance(exc_object, MemoryError):
497
err_file.write("brz: out of memory\n")
498
if 'mem_dump' in debug.debug_flags:
499
_dump_memory_usage(err_file)
501
err_file.write("Use -Dmem_dump to dump memory to a file.\n")
428
if (isinstance(exc_object, IOError)
429
and getattr(exc_object, 'errno', None) == errno.EPIPE):
430
err_file.write("bzr: broken pipe\n")
431
return errors.EXIT_ERROR
432
elif isinstance(exc_object, KeyboardInterrupt):
433
err_file.write("bzr: interrupted\n")
502
434
return errors.EXIT_ERROR
503
435
elif isinstance(exc_object, ImportError) \
504
and str(exc_object).startswith("No module named "):
436
and str(exc_object).startswith("No module named "):
437
report_user_error(exc_info, err_file,
507
438
'You may need to install this Python library separately.')
508
439
return errors.EXIT_ERROR
509
440
elif not getattr(exc_object, 'internal_error', True):
510
441
report_user_error(exc_info, err_file)
511
442
return errors.EXIT_ERROR
512
elif isinstance(exc_object, EnvironmentError):
513
if getattr(exc_object, 'errno', None) == errno.EPIPE:
514
err_file.write("brz: broken pipe\n")
515
return errors.EXIT_ERROR
443
elif isinstance(exc_object, (OSError, IOError)):
516
444
# Might be nice to catch all of these and show them as something more
517
445
# specific, but there are too many cases at the moment.
518
446
report_user_error(exc_info, err_file)
540
468
:param advice: Extra advice to the user to be printed following the
543
err_file.write(("brz: ERROR: %s\n" % (str(exc_info[1]),)))
471
if 'error' in debug.debug_flags:
472
print_exception(exc_info, err_file)
474
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
545
err_file.write(("%s\n" % advice))
476
err_file.write("%s\n" % (advice,))
548
479
def report_bug(exc_info, err_file):
549
"""Report an exception that probably indicates a bug in brz"""
550
from breezy.crash import report_bug
480
"""Report an exception that probably indicates a bug in bzr"""
481
from bzrlib.crash import report_bug
551
482
report_bug(exc_info, err_file)
554
def _flush_stdout_stderr():
555
# called from the breezy library finalizer returned by breezy.initialize()
560
# On Windows, I get ValueError calling stdout.flush() on a closed
565
if e.errno in [errno.EINVAL, errno.EPIPE]:
572
# called from the breezy library finalizer returned by breezy.initialize()
578
class EncodedStreamHandler(logging.Handler):
579
"""Robustly write logging events to a stream using the specified encoding
581
Messages are expected to be formatted to unicode, but UTF-8 byte strings
582
are also accepted. An error during formatting or a str message in another
583
encoding will be quitely noted as an error in the Bazaar log file.
585
The stream is not closed so sys.stdout or sys.stderr may be passed.
588
def __init__(self, stream, encoding=None, errors='strict', level=0):
589
logging.Handler.__init__(self, level)
592
encoding = getattr(stream, "encoding", "ascii")
593
self.encoding = encoding
597
flush = getattr(self.stream, "flush", None)
598
if flush is not None:
601
def emit(self, record):
603
if not isinstance(record.msg, str):
604
msg = record.msg.decode("utf-8")
606
line = self.format(record)
607
if not isinstance(line, str):
608
line = line.decode("utf-8")
609
self.stream.write(line.encode(self.encoding, self.errors) + b"\n")
611
log_exception_quietly()
612
# Try saving the details that would have been logged in some form
613
msg = args = "<Unformattable>"
615
msg = repr(record.msg)
616
args = repr(record.args)
619
# Using mutter() bypasses the logging module and writes directly
620
# to the file so there's no danger of getting into a loop here.
621
mutter("Logging record unformattable: %s %% %s", msg, args)
624
class Config(object):
625
"""Configuration of message tracing in breezy.
627
This implements the context manager protocol and should manage any global
628
variables still used. The default config used is DefaultConfig, but
629
embedded uses of breezy may wish to use a custom manager.
633
return self # This is bound to the 'as' clause in a with statement.
635
def __exit__(self, exc_type, exc_val, exc_tb):
636
return False # propogate exceptions.
639
class DefaultConfig(Config):
640
"""A default configuration for tracing of messages in breezy.
642
This implements the context manager protocol.
646
self._original_filename = _brz_log_filename
647
self._original_state = enable_default_logging()
648
return self # This is bound to the 'as' clause in a with statement.
650
def __exit__(self, exc_type, exc_val, exc_tb):
651
pop_log_file(self._original_state)
652
global _brz_log_filename
653
_brz_log_filename = self._original_filename
654
return False # propogate exceptions.