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
54
# increased cost of logging.py is not so bad, and we could standardize on
58
from io import StringIO
63
from bzrlib.lazy_import import lazy_import
64
from .lazy_import import lazy_import
64
65
lazy_import(globals(), """
65
from cStringIO import StringIO
73
from bzrlib.symbol_versioning import (
78
72
lazy_import(globals(), """
90
# global verbosity for bzrlib; controls the log level for stderr; 0=normal; <0
85
# global verbosity for breezy; controls the log level for stderr; 0=normal; <0
91
86
# is quiet; >0 is verbose.
92
87
_verbosity_level = 0
97
92
# than push/pop_log_file.
100
# Absolute path for ~/.bzr.log. Not changed even if the log/trace output is
95
# Absolute path for brz.log. Not changed even if the log/trace output is
101
96
# redirected elsewhere. Used to show the location in --version.
102
_bzr_log_filename = None
97
_brz_log_filename = None
104
99
# The time the first message was written to the trace file, so that we can
105
100
# show relative times since startup.
106
_bzr_log_start_time = bzrlib._start_time
101
_brz_log_start_time = breezy._start_time
109
104
# held in a global for quick reference
110
_bzr_logger = logging.getLogger('bzr')
105
_brz_logger = logging.getLogger('brz')
113
108
def note(*args, **kwargs):
114
# FIXME note always emits utf-8, regardless of the terminal encoding
109
"""Output a note to the user.
111
Takes the same parameters as logging.info.
116
115
# FIXME: clearing the ui and then going through the abstract logging
117
116
# framework is whack; we should probably have a logging Handler that
118
117
# deals with terminal output if needed.
120
bzrlib.ui.ui_factory.clear_term()
121
_bzr_logger.info(*args, **kwargs)
118
ui.ui_factory.clear_term()
119
_brz_logger.info(*args, **kwargs)
124
122
def 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)
123
ui.ui_factory.clear_term()
124
_brz_logger.warning(*args, **kwargs)
148
127
def show_error(*args, **kwargs):
161
150
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
164
if isinstance(fmt, unicode):
165
fmt = fmt.encode('utf8')
153
# Let format strings be specified as ascii bytes to help Python 2
154
if isinstance(fmt, bytes):
155
fmt = fmt.decode('ascii', 'replace')
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)
179
161
now = time.time()
180
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
181
out = timestamp + out + '\n'
182
_trace_file.write(out)
162
out = '%0.3f %s\n' % (now - _brz_log_start_time, out)
163
_trace_file.write(out.encode('utf-8'))
183
164
# there's no explicit flushing; the file is typically line buffered.
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.
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.
234
213
If the log is more than a particular length, the old file is renamed to
235
.bzr.log.old and a new file is started. Otherwise, we append to the
214
brz.log.old and a new file is started. Otherwise, we append to the
238
This sets the global _bzr_log_filename.
217
This sets the global _brz_log_filename.
240
global _bzr_log_filename
219
global _brz_log_filename
242
221
def _open_or_create_log_file(filename):
243
222
"""Open existing log file, or create with ownership and permissions
252
231
fd = os.open(filename, flags)
255
234
if e.errno != errno.ENOENT:
258
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
237
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0o666)
260
239
if e.errno != errno.EEXIST:
263
242
osutils.copy_ownership_from_path(filename)
265
return os.fdopen(fd, 'at', 0) # unbuffered
268
_bzr_log_filename = _get_bzr_log_filename()
269
_rollover_trace_maybe(_bzr_log_filename)
244
return os.fdopen(fd, 'ab', 0) # unbuffered
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:
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:
281
263
# If we are failing to open the log, then most likely logging has not
282
264
# been set up yet. So we just write to stderr rather than using
283
265
# 'warning()'. If we using warning(), users get the unhelpful 'no
284
# handlers registered for "bzr"' when something goes wrong on the
266
# handlers registered for "brz"' when something goes wrong on the
285
267
# server. (bug #503886)
286
268
sys.stderr.write("failed to open trace file: %s\n" % (e,))
287
269
# TODO: What should happen if we fail to open the trace file? Maybe the
293
275
def enable_default_logging():
294
"""Configure default logging: messages to stderr and debug to .bzr.log
276
"""Configure default logging: messages to stderr and debug to brz.log
296
278
This should only be called once per process.
298
Non-command-line programs embedding bzrlib do not need to call this. They
280
Non-command-line programs embedding breezy do not need to call this. They
299
281
can instead either pass a file to _push_log_file, or act directly on
300
logging.getLogger("bzr").
282
logging.getLogger("brz").
302
284
Output can be redirected away by calling _push_log_file.
286
:return: A memento from push_log_file for restoring the log state.
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,
288
start_time = osutils.format_local_date(_brz_log_start_time,
308
289
timezone='local')
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,
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(
314
295
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
315
296
r'%Y-%m-%d %H:%M:%S')
316
# after hooking output into bzr_log, we also need to attach a stderr
297
# after hooking output into brz_log, we also need to attach a stderr
317
298
# handler, writing only at level info and with encoding
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)
299
stderr_handler = logging.StreamHandler(stream=sys.stderr)
300
logging.getLogger('brz').addHandler(stderr_handler)
325
304
def push_log_file(to_file, log_format=None, date_format=None):
328
307
:param to_file: A file-like object to which messages will be sent.
330
309
:returns: A memento that should be passed to _pop_log_file to restore the
331
previously active logging.
310
previously active logging.
333
312
global _trace_file
334
313
# make a new handler
335
new_handler = logging.StreamHandler(to_file)
336
new_handler.setLevel(logging.DEBUG)
314
new_handler = EncodedStreamHandler(to_file, "utf-8", level=logging.DEBUG)
337
315
if log_format is None:
338
316
log_format = '%(levelname)8s %(message)s'
339
317
new_handler.setFormatter(logging.Formatter(log_format, date_format))
340
318
# save and remove any existing log handlers
341
bzr_logger = logging.getLogger('bzr')
342
old_handlers = bzr_logger.handlers[:]
343
del bzr_logger.handlers[:]
319
brz_logger = logging.getLogger('brz')
320
old_handlers = brz_logger.handlers[:]
321
del brz_logger.handlers[:]
344
322
# set that as the default logger
345
bzr_logger.addHandler(new_handler)
346
bzr_logger.setLevel(logging.DEBUG)
323
brz_logger.addHandler(new_handler)
324
brz_logger.setLevel(logging.DEBUG)
347
325
# TODO: check if any changes are needed to the root logger
349
# TODO: also probably need to save and restore the level on bzr_logger.
327
# TODO: also probably need to save and restore the level on brz_logger.
350
328
# but maybe we can avoid setting the logger level altogether, and just set
351
329
# the level on the handler?
354
332
old_trace_file = _trace_file
355
333
# send traces to the new one
356
334
_trace_file = to_file
357
result = new_handler, _trace_file
358
335
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
361
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
338
def pop_log_file(entry):
362
339
"""Undo changes to logging/tracing done by _push_log_file.
364
This flushes, but does not close the trace file.
341
This flushes, but does not close the trace file (so that anything that was
366
344
Takes the memento returned from _push_log_file."""
345
(magic, old_handlers, new_handler, old_trace_file, new_trace_file) = entry
367
346
global _trace_file
368
347
_trace_file = old_trace_file
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
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
372
351
# file will likely already be closed underneath.
373
352
new_handler.close()
374
bzr_logger.handlers = old_handlers
375
new_trace_file.flush()
353
brz_logger.handlers = old_handlers
354
if new_trace_file is not None:
355
new_trace_file.flush()
378
358
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)
464
480
def report_exception(exc_info, err_file):
465
"""Report an exception to err_file (typically stderr) and to .bzr.log.
481
"""Report an exception to err_file (typically stderr) and to brz.log.
467
483
This will show either a full traceback or a short message as appropriate.
469
485
:return: The appropriate exit code for this error.
471
# Log the full traceback to ~/.bzr.log
487
# Log the full traceback to brz.log
472
488
log_exception_quietly()
473
489
if 'error' in debug.debug_flags:
474
490
print_exception(exc_info, err_file)
475
491
return errors.EXIT_ERROR
476
492
exc_type, exc_object, exc_tb = exc_info
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")
493
if isinstance(exc_object, KeyboardInterrupt):
494
err_file.write("brz: interrupted\n")
483
495
return errors.EXIT_ERROR
484
496
elif isinstance(exc_object, MemoryError):
485
err_file.write("bzr: out of memory\n")
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")
486
502
return errors.EXIT_ERROR
487
503
elif isinstance(exc_object, ImportError) \
488
and str(exc_object).startswith("No module named "):
489
report_user_error(exc_info, err_file,
504
and str(exc_object).startswith("No module named "):
490
507
'You may need to install this Python library separately.')
491
508
return errors.EXIT_ERROR
492
509
elif not getattr(exc_object, 'internal_error', True):
493
510
report_user_error(exc_info, err_file)
494
511
return errors.EXIT_ERROR
495
elif isinstance(exc_object, (OSError, IOError)):
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
496
516
# Might be nice to catch all of these and show them as something more
497
517
# specific, but there are too many cases at the moment.
498
518
report_user_error(exc_info, err_file)
505
525
def print_exception(exc_info, err_file):
506
526
exc_type, exc_object, exc_tb = exc_info
507
err_file.write("bzr: ERROR: %s.%s: %s\n" % (
508
exc_type.__module__, exc_type.__name__, exc_object))
527
err_file.write("brz: ERROR: %s: %s\n" % (
528
_qualified_exception_name(exc_type), exc_object))
509
529
err_file.write('\n')
510
530
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
520
540
:param advice: Extra advice to the user to be printed following the
523
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
543
err_file.write(("brz: ERROR: %s\n" % (str(exc_info[1]),)))
525
err_file.write("%s\n" % (advice,))
545
err_file.write(("%s\n" % advice))
528
548
def report_bug(exc_info, err_file):
529
"""Report an exception that probably indicates a bug in bzr"""
530
from bzrlib.crash import report_bug
549
"""Report an exception that probably indicates a bug in brz"""
550
from breezy.crash import report_bug
531
551
report_bug(exc_info, err_file)
534
554
def _flush_stdout_stderr():
535
# installed into an atexit hook by bzrlib.initialize()
555
# called from the breezy library finalizer returned by breezy.initialize()
537
557
sys.stdout.flush()
538
558
sys.stderr.flush()
560
# On Windows, I get ValueError calling stdout.flush() on a closed
541
565
if e.errno in [errno.EINVAL, errno.EPIPE]:
547
571
def _flush_trace():
548
# run from atexit hook
572
# called from the breezy library finalizer returned by breezy.initialize()
549
573
global _trace_file
551
575
_trace_file.flush()
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.