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
27
such as running the test suite, they can also be redirected away from both of
28
those two places to another location.
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.
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
73
lazy_import(globals(), """
90
# global verbosity for bzrlib; controls the log level for stderr; 0=normal; <0
90
# global verbosity for breezy; controls the log level for stderr; 0=normal; <0
91
91
# is quiet; >0 is verbose.
92
92
_verbosity_level = 0
97
97
# than push/pop_log_file.
100
# Absolute path for ~/.bzr.log. Not changed even if the log/trace output is
100
# Absolute path for brz.log. Not changed even if the log/trace output is
101
101
# redirected elsewhere. Used to show the location in --version.
102
_bzr_log_filename = None
102
_brz_log_filename = None
104
104
# The time the first message was written to the trace file, so that we can
105
105
# show relative times since startup.
106
_bzr_log_start_time = bzrlib._start_time
106
_brz_log_start_time = breezy._start_time
109
109
# held in a global for quick reference
110
_bzr_logger = logging.getLogger('bzr')
110
_brz_logger = logging.getLogger('brz')
113
113
def note(*args, **kwargs):
120
# FIXME note always emits utf-8, regardless of the terminal encoding
122
120
# FIXME: clearing the ui and then going through the abstract logging
123
121
# framework is whack; we should probably have a logging Handler that
124
122
# deals with terminal output if needed.
126
bzrlib.ui.ui_factory.clear_term()
127
_bzr_logger.info(*args, **kwargs)
123
ui.ui_factory.clear_term()
124
_brz_logger.info(*args, **kwargs)
130
127
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)
128
ui.ui_factory.clear_term()
129
_brz_logger.warning(*args, **kwargs)
154
132
def show_error(*args, **kwargs):
167
155
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
170
if isinstance(fmt, unicode):
171
fmt = fmt.encode('utf8')
158
# Let format strings be specified as ascii bytes to help Python 2
159
if isinstance(fmt, bytes):
160
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)
165
_Bytes(arg) if isinstance(arg, bytes) else arg for arg in args)
185
169
now = time.time()
186
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
187
out = timestamp + out + '\n'
188
_trace_file.write(out)
170
out = '%0.3f %s\n' % (now - _brz_log_start_time, out)
171
_trace_file.write(out.encode('utf-8'))
189
172
# 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')
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.
206
def _get_brz_log_filename():
207
brz_log = osutils.path_from_environ('BRZ_LOG')
210
return os.path.join(bedding.cache_dir(), 'brz.log')
214
"""Open the brz.log trace file.
240
216
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
217
brz.log.old and a new file is started. Otherwise, we append to the
244
This sets the global _bzr_log_filename.
220
This sets the global _brz_log_filename.
246
global _bzr_log_filename
222
global _brz_log_filename
248
224
def _open_or_create_log_file(filename):
249
225
"""Open existing log file, or create with ownership and permissions
258
234
fd = os.open(filename, flags)
261
237
if e.errno != errno.ENOENT:
264
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
240
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0o666)
266
242
if e.errno != errno.EEXIST:
269
245
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)
247
return os.fdopen(fd, 'ab', 0) # unbuffered
249
_brz_log_filename = _get_brz_log_filename()
250
_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:
252
brz_log_file = _open_or_create_log_file(_brz_log_filename)
253
brz_log_file.write(b'\n')
254
if brz_log_file.tell() <= 2:
256
b"this is a debug log for diagnosing/reporting problems in brz\n")
258
b"you can delete or truncate this file, or include sections in\n")
260
b"bug reports to https://bugs.launchpad.net/brz/+filebug\n\n")
264
except EnvironmentError as e:
287
265
# If we are failing to open the log, then most likely logging has not
288
266
# been set up yet. So we just write to stderr rather than using
289
267
# 'warning()'. If we using warning(), users get the unhelpful 'no
290
# handlers registered for "bzr"' when something goes wrong on the
268
# handlers registered for "brz"' when something goes wrong on the
291
269
# server. (bug #503886)
292
270
sys.stderr.write("failed to open trace file: %s\n" % (e,))
293
271
# TODO: What should happen if we fail to open the trace file? Maybe the
299
277
def enable_default_logging():
300
"""Configure default logging: messages to stderr and debug to .bzr.log
278
"""Configure default logging: messages to stderr and debug to brz.log
302
280
This should only be called once per process.
304
Non-command-line programs embedding bzrlib do not need to call this. They
282
Non-command-line programs embedding breezy do not need to call this. They
305
283
can instead either pass a file to _push_log_file, or act directly on
306
logging.getLogger("bzr").
284
logging.getLogger("brz").
308
286
Output can be redirected away by calling _push_log_file.
288
: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,
290
start_time = osutils.format_local_date(_brz_log_start_time,
314
291
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,
292
brz_log_file = _open_brz_log()
293
if brz_log_file is not None:
294
brz_log_file.write(start_time.encode('utf-8') + b'\n')
295
memento = push_log_file(
320
297
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
321
298
r'%Y-%m-%d %H:%M:%S')
322
# after hooking output into bzr_log, we also need to attach a stderr
299
# after hooking output into brz_log, we also need to attach a stderr
323
300
# 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)
301
if sys.version_info[0] == 2:
302
stderr_handler = EncodedStreamHandler(
303
sys.stderr, osutils.get_terminal_encoding(), 'replace',
306
stderr_handler = logging.StreamHandler(stream=sys.stderr)
307
logging.getLogger('brz').addHandler(stderr_handler)
331
311
def push_log_file(to_file, log_format=None, date_format=None):
334
314
:param to_file: A file-like object to which messages will be sent.
336
316
:returns: A memento that should be passed to _pop_log_file to restore the
337
previously active logging.
317
previously active logging.
339
319
global _trace_file
340
320
# make a new handler
341
new_handler = logging.StreamHandler(to_file)
342
new_handler.setLevel(logging.DEBUG)
321
new_handler = EncodedStreamHandler(to_file, "utf-8", level=logging.DEBUG)
343
322
if log_format is None:
344
323
log_format = '%(levelname)8s %(message)s'
345
324
new_handler.setFormatter(logging.Formatter(log_format, date_format))
346
325
# save and remove any existing log handlers
347
bzr_logger = logging.getLogger('bzr')
348
old_handlers = bzr_logger.handlers[:]
349
del bzr_logger.handlers[:]
326
brz_logger = logging.getLogger('brz')
327
old_handlers = brz_logger.handlers[:]
328
del brz_logger.handlers[:]
350
329
# set that as the default logger
351
bzr_logger.addHandler(new_handler)
352
bzr_logger.setLevel(logging.DEBUG)
330
brz_logger.addHandler(new_handler)
331
brz_logger.setLevel(logging.DEBUG)
353
332
# 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.
334
# TODO: also probably need to save and restore the level on brz_logger.
356
335
# but maybe we can avoid setting the logger level altogether, and just set
357
336
# the level on the handler?
360
339
old_trace_file = _trace_file
361
340
# send traces to the new one
362
341
_trace_file = to_file
363
result = new_handler, _trace_file
364
342
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)):
345
def pop_log_file(entry):
368
346
"""Undo changes to logging/tracing done by _push_log_file.
370
This flushes, but does not close the trace file.
348
This flushes, but does not close the trace file (so that anything that was
372
351
Takes the memento returned from _push_log_file."""
352
(magic, old_handlers, new_handler, old_trace_file, new_trace_file) = entry
373
353
global _trace_file
374
354
_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
355
brz_logger = logging.getLogger('brz')
356
brz_logger.removeHandler(new_handler)
357
# must be closed, otherwise logging will try to close it at exit, and the
378
358
# file will likely already be closed underneath.
379
359
new_handler.close()
380
bzr_logger.handlers = old_handlers
381
new_trace_file.flush()
360
brz_logger.handlers = old_handlers
361
if new_trace_file is not None:
362
new_trace_file.flush()
384
365
def log_exception_quietly():
452
def _dump_memory_usage(err_file):
455
fd, name = tempfile.mkstemp(prefix="brz_memdump", suffix=".json")
456
dump_file = os.fdopen(fd, 'w')
457
from meliae import scanner
458
scanner.dump_gc_objects(dump_file)
459
err_file.write("Memory dumped to %s\n" % name)
461
err_file.write("Dumping memory requires meliae module.\n")
462
log_exception_quietly()
463
except BaseException:
464
err_file.write("Exception while dumping memory.\n")
465
log_exception_quietly()
467
if dump_file is not None:
473
def _qualified_exception_name(eclass, unqualified_breezy_errors=False):
474
"""Give name of error class including module for non-builtin exceptions
476
If `unqualified_breezy_errors` is True, errors specific to breezy will
477
also omit the module prefix.
479
class_name = eclass.__name__
480
module_name = eclass.__module__
481
if module_name in ("builtins", "exceptions", "__main__") or (
482
unqualified_breezy_errors and module_name == "breezy.errors"):
484
return "%s.%s" % (module_name, class_name)
470
487
def report_exception(exc_info, err_file):
471
"""Report an exception to err_file (typically stderr) and to .bzr.log.
488
"""Report an exception to err_file (typically stderr) and to brz.log.
473
490
This will show either a full traceback or a short message as appropriate.
475
492
:return: The appropriate exit code for this error.
477
# Log the full traceback to ~/.bzr.log
494
# Log the full traceback to brz.log
478
495
log_exception_quietly()
479
496
if 'error' in debug.debug_flags:
480
497
print_exception(exc_info, err_file)
481
498
return errors.EXIT_ERROR
482
499
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")
500
if isinstance(exc_object, KeyboardInterrupt):
501
err_file.write("brz: interrupted\n")
489
502
return errors.EXIT_ERROR
490
503
elif isinstance(exc_object, MemoryError):
491
err_file.write("bzr: out of memory\n")
504
err_file.write("brz: out of memory\n")
505
if 'mem_dump' in debug.debug_flags:
506
_dump_memory_usage(err_file)
508
err_file.write("Use -Dmem_dump to dump memory to a file.\n")
492
509
return errors.EXIT_ERROR
493
510
elif isinstance(exc_object, ImportError) \
494
and str(exc_object).startswith("No module named "):
495
report_user_error(exc_info, err_file,
511
and str(exc_object).startswith("No module named "):
496
514
'You may need to install this Python library separately.')
497
515
return errors.EXIT_ERROR
498
516
elif not getattr(exc_object, 'internal_error', True):
499
517
report_user_error(exc_info, err_file)
500
518
return errors.EXIT_ERROR
501
elif isinstance(exc_object, (OSError, IOError)):
519
elif osutils.is_environment_error(exc_object):
520
if getattr(exc_object, 'errno', None) == errno.EPIPE:
521
err_file.write("brz: broken pipe\n")
522
return errors.EXIT_ERROR
502
523
# Might be nice to catch all of these and show them as something more
503
524
# specific, but there are too many cases at the moment.
504
525
report_user_error(exc_info, err_file)
511
532
def print_exception(exc_info, err_file):
512
533
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))
534
err_file.write("brz: ERROR: %s: %s\n" % (
535
_qualified_exception_name(exc_type), exc_object))
515
536
err_file.write('\n')
516
537
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
526
547
:param advice: Extra advice to the user to be printed following the
529
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
550
err_file.write(("brz: ERROR: %s\n" % (str(exc_info[1]),)))
531
err_file.write("%s\n" % (advice,))
552
err_file.write(("%s\n" % advice))
534
555
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
556
"""Report an exception that probably indicates a bug in brz"""
557
from breezy.crash import report_bug
537
558
report_bug(exc_info, err_file)
540
561
def _flush_stdout_stderr():
541
# installed into an atexit hook by bzrlib.initialize()
562
# called from the breezy library finalizer returned by breezy.initialize()
543
564
sys.stdout.flush()
544
565
sys.stderr.flush()
567
# On Windows, I get ValueError calling stdout.flush() on a closed
547
572
if e.errno in [errno.EINVAL, errno.EPIPE]:
553
578
def _flush_trace():
554
# run from atexit hook
579
# called from the breezy library finalizer returned by breezy.initialize()
555
580
global _trace_file
557
582
_trace_file.flush()
585
class EncodedStreamHandler(logging.Handler):
586
"""Robustly write logging events to a stream using the specified encoding
588
Messages are expected to be formatted to unicode, but UTF-8 byte strings
589
are also accepted. An error during formatting or a str message in another
590
encoding will be quitely noted as an error in the Bazaar log file.
592
The stream is not closed so sys.stdout or sys.stderr may be passed.
595
def __init__(self, stream, encoding=None, errors='strict', level=0):
596
logging.Handler.__init__(self, level)
599
encoding = getattr(stream, "encoding", "ascii")
600
self.encoding = encoding
604
flush = getattr(self.stream, "flush", None)
605
if flush is not None:
608
def emit(self, record):
610
if not isinstance(record.msg, text_type):
611
msg = record.msg.decode("utf-8")
614
line = self.format(record)
615
if not isinstance(line, text_type):
616
line = line.decode("utf-8")
617
self.stream.write(line.encode(self.encoding, self.errors) + b"\n")
619
log_exception_quietly()
620
# Try saving the details that would have been logged in some form
621
msg = args = "<Unformattable>"
623
msg = repr(record.msg)
624
args = repr(record.args)
627
# Using mutter() bypasses the logging module and writes directly
628
# to the file so there's no danger of getting into a loop here.
629
mutter("Logging record unformattable: %s %% %s", msg, args)
632
class Config(object):
633
"""Configuration of message tracing in breezy.
635
This implements the context manager protocol and should manage any global
636
variables still used. The default config used is DefaultConfig, but
637
embedded uses of breezy may wish to use a custom manager.
641
return self # This is bound to the 'as' clause in a with statement.
643
def __exit__(self, exc_type, exc_val, exc_tb):
644
return False # propogate exceptions.
647
class DefaultConfig(Config):
648
"""A default configuration for tracing of messages in breezy.
650
This implements the context manager protocol.
654
self._original_filename = _brz_log_filename
655
self._original_state = enable_default_logging()
656
return self # This is bound to the 'as' clause in a with statement.
658
def __exit__(self, exc_type, exc_val, exc_tb):
659
pop_log_file(self._original_state)
660
global _brz_log_filename
661
_brz_log_filename = self._original_filename
662
return False # propogate exceptions.