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):
114
# FIXME note always emits utf-8, regardless of the terminal encoding
115
"""Output a note to the user.
117
Takes the same parameters as logging.info.
116
121
# FIXME: clearing the ui and then going through the abstract logging
117
122
# framework is whack; we should probably have a logging Handler that
118
123
# deals with terminal output if needed.
120
bzrlib.ui.ui_factory.clear_term()
121
_bzr_logger.info(*args, **kwargs)
124
ui.ui_factory.clear_term()
125
_brz_logger.info(*args, **kwargs)
124
128
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)
129
ui.ui_factory.clear_term()
130
_brz_logger.warning(*args, **kwargs)
148
133
def show_error(*args, **kwargs):
151
136
Don't use this for exceptions, use report_exception instead.
153
_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')
156
151
def mutter(fmt, *args):
161
156
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
164
if isinstance(fmt, unicode):
165
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')
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)
166
_Bytes(arg) if isinstance(arg, bytes) else arg for arg in args)
179
170
now = time.time()
180
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
181
out = timestamp + out + '\n'
182
_trace_file.write(out)
171
out = '%0.3f %s\n' % (now - _brz_log_start_time, out)
172
_trace_file.write(out.encode('utf-8'))
183
173
# 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')
207
def _get_brz_log_filename():
208
brz_log = osutils.path_from_environ('BRZ_LOG')
211
home = osutils.path_from_environ('BRZ_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.
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.
234
223
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
224
.brz.log.old and a new file is started. Otherwise, we append to the
238
This sets the global _bzr_log_filename.
227
This sets the global _brz_log_filename.
240
global _bzr_log_filename
229
global _brz_log_filename
242
231
def _open_or_create_log_file(filename):
243
232
"""Open existing log file, or create with ownership and permissions
252
241
fd = os.open(filename, flags)
255
244
if e.errno != errno.ENOENT:
258
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)
260
249
if e.errno != errno.EEXIST:
263
252
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)
254
return os.fdopen(fd, 'ab', 0) # unbuffered
257
_brz_log_filename = _get_brz_log_filename()
258
_rollover_trace_maybe(_brz_log_filename)
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:
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:
281
270
# If we are failing to open the log, then most likely logging has not
282
271
# been set up yet. So we just write to stderr rather than using
283
272
# 'warning()'. If we using warning(), users get the unhelpful 'no
284
# handlers registered for "bzr"' when something goes wrong on the
273
# handlers registered for "brz"' when something goes wrong on the
285
274
# server. (bug #503886)
286
275
sys.stderr.write("failed to open trace file: %s\n" % (e,))
287
276
# TODO: What should happen if we fail to open the trace file? Maybe the
293
282
def enable_default_logging():
294
"""Configure default logging: messages to stderr and debug to .bzr.log
283
"""Configure default logging: messages to stderr and debug to .brz.log
296
285
This should only be called once per process.
298
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
299
288
can instead either pass a file to _push_log_file, or act directly on
300
logging.getLogger("bzr").
289
logging.getLogger("brz").
302
291
Output can be redirected away by calling _push_log_file.
293
: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,
295
start_time = osutils.format_local_date(_brz_log_start_time,
308
296
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,
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,
314
301
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
315
302
r'%Y-%m-%d %H:%M:%S')
316
# 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
317
304
# 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)
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)
325
314
def push_log_file(to_file, log_format=None, date_format=None):
328
317
:param to_file: A file-like object to which messages will be sent.
330
319
:returns: A memento that should be passed to _pop_log_file to restore the
331
previously active logging.
320
previously active logging.
333
322
global _trace_file
334
323
# make a new handler
335
new_handler = logging.StreamHandler(to_file)
336
new_handler.setLevel(logging.DEBUG)
324
new_handler = EncodedStreamHandler(to_file, "utf-8", level=logging.DEBUG)
337
325
if log_format is None:
338
326
log_format = '%(levelname)8s %(message)s'
339
327
new_handler.setFormatter(logging.Formatter(log_format, date_format))
340
328
# save and remove any existing log handlers
341
bzr_logger = logging.getLogger('bzr')
342
old_handlers = bzr_logger.handlers[:]
343
del bzr_logger.handlers[:]
329
brz_logger = logging.getLogger('brz')
330
old_handlers = brz_logger.handlers[:]
331
del brz_logger.handlers[:]
344
332
# set that as the default logger
345
bzr_logger.addHandler(new_handler)
346
bzr_logger.setLevel(logging.DEBUG)
333
brz_logger.addHandler(new_handler)
334
brz_logger.setLevel(logging.DEBUG)
347
335
# 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.
337
# TODO: also probably need to save and restore the level on brz_logger.
350
338
# but maybe we can avoid setting the logger level altogether, and just set
351
339
# the level on the handler?
358
346
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)):
349
def pop_log_file(entry):
362
350
"""Undo changes to logging/tracing done by _push_log_file.
364
This flushes, but does not close the trace file.
352
This flushes, but does not close the trace file (so that anything that was
366
355
Takes the memento returned from _push_log_file."""
356
(magic, old_handlers, new_handler, old_trace_file, new_trace_file) = entry
367
357
global _trace_file
368
358
_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
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
372
362
# file will likely already be closed underneath.
373
363
new_handler.close()
374
bzr_logger.handlers = old_handlers
375
new_trace_file.flush()
364
brz_logger.handlers = old_handlers
365
if new_trace_file is not None:
366
new_trace_file.flush()
378
369
def log_exception_quietly():
432
423
def debug_memory(message='', short=True):
433
424
"""Write out a memory dump."""
434
425
if sys.platform == 'win32':
435
from bzrlib import win32utils
426
from breezy import win32utils
436
427
win32utils.debug_memory_win32api(message=message, short=short)
438
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)
464
489
def report_exception(exc_info, err_file):
465
"""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.
467
492
This will show either a full traceback or a short message as appropriate.
469
494
:return: The appropriate exit code for this error.
471
# Log the full traceback to ~/.bzr.log
496
# Log the full traceback to ~/.brz.log
472
497
log_exception_quietly()
473
498
if 'error' in debug.debug_flags:
474
499
print_exception(exc_info, err_file)
475
500
return errors.EXIT_ERROR
476
501
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")
502
if isinstance(exc_object, KeyboardInterrupt):
503
err_file.write("brz: interrupted\n")
483
504
return errors.EXIT_ERROR
484
505
elif isinstance(exc_object, MemoryError):
485
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")
486
511
return errors.EXIT_ERROR
487
512
elif isinstance(exc_object, ImportError) \
488
513
and str(exc_object).startswith("No module named "):
492
517
elif not getattr(exc_object, 'internal_error', True):
493
518
report_user_error(exc_info, err_file)
494
519
return errors.EXIT_ERROR
495
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
496
524
# Might be nice to catch all of these and show them as something more
497
525
# specific, but there are too many cases at the moment.
498
526
report_user_error(exc_info, err_file)
505
533
def print_exception(exc_info, err_file):
506
534
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))
535
err_file.write("brz: ERROR: %s: %s\n" % (
536
_qualified_exception_name(exc_type), exc_object))
509
537
err_file.write('\n')
510
538
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
520
548
:param advice: Extra advice to the user to be printed following the
523
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
551
err_file.write(("brz: ERROR: %s\n" % (str(exc_info[1]),)))
525
err_file.write("%s\n" % (advice,))
553
err_file.write(("%s\n" % advice))
528
556
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
557
"""Report an exception that probably indicates a bug in brz"""
558
from breezy.crash import report_bug
531
559
report_bug(exc_info, err_file)
534
562
def _flush_stdout_stderr():
535
# installed into an atexit hook by bzrlib.initialize()
563
# called from the breezy library finalizer returned by breezy.initialize()
537
565
sys.stdout.flush()
538
566
sys.stderr.flush()
567
except ValueError as e:
568
# On Windows, I get ValueError calling stdout.flush() on a closed
541
573
if e.errno in [errno.EINVAL, errno.EPIPE]:
547
579
def _flush_trace():
548
# run from atexit hook
580
# called from the breezy library finalizer returned by breezy.initialize()
549
581
global _trace_file
551
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.