132
186
if size <= 4 << 20:
134
188
old_fname = trace_fname + '.old'
135
from osutils import rename
136
rename(trace_fname, old_fname)
189
osutils.rename(trace_fname, old_fname)
141
def open_tracefile(tracefilename=None):
142
# Messages are always written to here, so that we have some
143
# information if something goes wrong. In a future version this
144
# file will be removed on successful completion.
145
global _file_handler, _bzr_log_file, _bzr_log_filename
148
if tracefilename is None:
194
def _get_bzr_log_filename():
195
bzr_log = os.environ.get('BZR_LOG')
198
home = os.environ.get('BZR_HOME')
149
200
if sys.platform == 'win32':
150
201
from bzrlib import win32utils
151
202
home = win32utils.get_home_location()
153
204
home = os.path.expanduser('~')
154
_bzr_log_filename = os.path.join(home, '.bzr.log')
156
_bzr_log_filename = os.path.expanduser(_bzr_log_filename)
205
return os.path.join(home, '.bzr.log')
209
"""Open the .bzr.log trace file.
211
If the log is more than a particular length, the old file is renamed to
212
.bzr.log.old and a new file is started. Otherwise, we append to the
215
This sets the global _bzr_log_filename.
217
global _bzr_log_filename
219
def _open_or_create_log_file(filename):
220
"""Open existing log file, or create with ownership and permissions
222
It inherits the ownership and permissions (masked by umask) from
223
the containing directory to cope better with being run under sudo
224
with $HOME still set to the user's homedir.
226
flags = os.O_WRONLY | os.O_APPEND | osutils.O_TEXT
229
fd = os.open(filename, flags)
232
if e.errno != errno.ENOENT:
235
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
237
if e.errno != errno.EEXIST:
240
osutils.copy_ownership_from_path(filename)
242
return os.fdopen(fd, 'at', 0) # unbuffered
245
_bzr_log_filename = _get_bzr_log_filename()
157
246
_rollover_trace_maybe(_bzr_log_filename)
160
#tf = codecs.open(trace_fname, 'at', 'utf8', buffering=LINE_BUFFERED)
161
tf = open(_bzr_log_filename, 'at', LINE_BUFFERED)
163
# tf.tell() on windows always return 0 until some writing done
166
tf.write("this is a debug log for diagnosing/reporting problems in bzr\n")
167
tf.write("you can delete or truncate this file, or include sections in\n")
168
tf.write("bug reports to bazaar@lists.canonical.com\n\n")
169
_file_handler = logging.StreamHandler(tf)
170
fmt = r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s'
171
datefmt = r'%a %H:%M:%S'
172
_file_handler.setFormatter(logging.Formatter(fmt, datefmt))
173
_file_handler.setLevel(logging.DEBUG)
174
logging.getLogger('').addHandler(_file_handler)
176
warning("failed to open trace file: %s" % (e))
179
@deprecated_function(zero_nine)
180
def log_exception(msg=None):
181
"""Log the last exception to stderr and the trace file.
183
The exception string representation is used as the error
184
summary, unless msg is given.
186
Please see log_exception_quietly() for the replacement API.
190
log_exception_quietly()
248
bzr_log_file = _open_or_create_log_file(_bzr_log_filename)
249
bzr_log_file.write('\n')
250
if bzr_log_file.tell() <= 2:
251
bzr_log_file.write("this is a debug log for diagnosing/reporting problems in bzr\n")
252
bzr_log_file.write("you can delete or truncate this file, or include sections in\n")
253
bzr_log_file.write("bug reports to https://bugs.launchpad.net/bzr/+filebug\n\n")
257
except EnvironmentError, e:
258
# If we are failing to open the log, then most likely logging has not
259
# been set up yet. So we just write to stderr rather than using
260
# 'warning()'. If we using warning(), users get the unhelpful 'no
261
# handlers registered for "bzr"' when something goes wrong on the
262
# server. (bug #503886)
263
sys.stderr.write("failed to open trace file: %s\n" % (e,))
264
# TODO: What should happen if we fail to open the trace file? Maybe the
265
# objects should be pointed at /dev/null or the equivalent? Currently
266
# returns None which will cause failures later.
270
def enable_default_logging():
271
"""Configure default logging: messages to stderr and debug to .bzr.log
273
This should only be called once per process.
275
Non-command-line programs embedding bzrlib do not need to call this. They
276
can instead either pass a file to _push_log_file, or act directly on
277
logging.getLogger("bzr").
279
Output can be redirected away by calling _push_log_file.
281
:return: A memento from push_log_file for restoring the log state.
283
start_time = osutils.format_local_date(_bzr_log_start_time,
285
bzr_log_file = _open_bzr_log()
286
if bzr_log_file is not None:
287
bzr_log_file.write(start_time.encode('utf-8') + '\n')
288
memento = push_log_file(bzr_log_file,
289
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
290
r'%Y-%m-%d %H:%M:%S')
291
# after hooking output into bzr_log, we also need to attach a stderr
292
# handler, writing only at level info and with encoding
293
stderr_handler = EncodedStreamHandler(sys.stderr,
294
osutils.get_terminal_encoding(), 'replace', level=logging.INFO)
295
logging.getLogger('bzr').addHandler(stderr_handler)
299
def push_log_file(to_file, log_format=None, date_format=None):
300
"""Intercept log and trace messages and send them to a file.
302
:param to_file: A file-like object to which messages will be sent.
304
:returns: A memento that should be passed to _pop_log_file to restore the
305
previously active logging.
309
new_handler = EncodedStreamHandler(to_file, "utf-8", level=logging.DEBUG)
310
if log_format is None:
311
log_format = '%(levelname)8s %(message)s'
312
new_handler.setFormatter(logging.Formatter(log_format, date_format))
313
# save and remove any existing log handlers
314
bzr_logger = logging.getLogger('bzr')
315
old_handlers = bzr_logger.handlers[:]
316
del bzr_logger.handlers[:]
317
# set that as the default logger
318
bzr_logger.addHandler(new_handler)
319
bzr_logger.setLevel(logging.DEBUG)
320
# TODO: check if any changes are needed to the root logger
322
# TODO: also probably need to save and restore the level on bzr_logger.
323
# but maybe we can avoid setting the logger level altogether, and just set
324
# the level on the handler?
326
# save the old trace file
327
old_trace_file = _trace_file
328
# send traces to the new one
329
_trace_file = to_file
330
result = new_handler, _trace_file
331
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
334
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
335
"""Undo changes to logging/tracing done by _push_log_file.
337
This flushes, but does not close the trace file (so that anything that was
340
Takes the memento returned from _push_log_file."""
342
_trace_file = old_trace_file
343
bzr_logger = logging.getLogger('bzr')
344
bzr_logger.removeHandler(new_handler)
345
# must be closed, otherwise logging will try to close it at exit, and the
346
# file will likely already be closed underneath.
348
bzr_logger.handlers = old_handlers
349
if new_trace_file is not None:
350
new_trace_file.flush()
193
353
def log_exception_quietly():
194
354
"""Log the last exception to the trace file only.
196
Used for exceptions that occur internally and that may be
197
interesting to developers but not to users. For example,
356
Used for exceptions that occur internally and that may be
357
interesting to developers but not to users. For example,
198
358
errors loading plugins.
201
360
mutter(traceback.format_exc())
204
def enable_default_logging():
205
"""Configure default logging to stderr and .bzr.log"""
206
# FIXME: if this is run twice, things get confused
207
global _stderr_handler, _file_handler, _trace_file, _bzr_log_file
208
_stderr_handler = logging.StreamHandler()
209
logging.getLogger('').addHandler(_stderr_handler)
210
_stderr_handler.setLevel(logging.INFO)
211
if not _file_handler:
213
_trace_file = _bzr_log_file
215
_file_handler.setLevel(logging.DEBUG)
216
_bzr_logger.setLevel(logging.DEBUG)
363
def set_verbosity_level(level):
364
"""Set the verbosity level.
366
:param level: -ve for quiet, 0 for normal, +ve for verbose
368
global _verbosity_level
369
_verbosity_level = level
370
_update_logging_level(level < 0)
371
ui.ui_factory.be_quiet(level < 0)
374
def get_verbosity_level():
375
"""Get the verbosity level.
377
See set_verbosity_level() for values.
379
return _verbosity_level
219
382
def be_quiet(quiet=True):
220
global _stderr_handler, _stderr_quiet
222
_stderr_quiet = quiet
224
_stderr_handler.setLevel(logging.WARNING)
226
_stderr_handler.setLevel(logging.INFO)
384
set_verbosity_level(-1)
386
set_verbosity_level(0)
389
def _update_logging_level(quiet=True):
390
"""Hide INFO messages if quiet."""
392
_bzr_logger.setLevel(logging.WARNING)
394
_bzr_logger.setLevel(logging.INFO)
234
def disable_default_logging():
235
"""Turn off default log handlers.
237
This is intended to be used by the test framework, which doesn't
238
want leakage from the code-under-test into the main logs.
241
l = logging.getLogger('')
242
l.removeHandler(_stderr_handler)
244
l.removeHandler(_file_handler)
248
def enable_test_log(to_file):
249
"""Redirect logging to a temporary file for a test
251
returns an opaque reference that should be passed to disable_test_log
252
after the test completes.
254
disable_default_logging()
257
hdlr = logging.StreamHandler(to_file)
258
hdlr.setLevel(logging.DEBUG)
259
hdlr.setFormatter(logging.Formatter('%(levelname)8s %(message)s'))
260
_bzr_logger.addHandler(hdlr)
261
_bzr_logger.setLevel(logging.DEBUG)
262
result = hdlr, _trace_file, _trace_depth
263
_trace_file = to_file
268
def disable_test_log((test_log_hdlr, old_trace_file, old_trace_depth)):
269
_bzr_logger.removeHandler(test_log_hdlr)
270
test_log_hdlr.close()
273
_trace_file = old_trace_file
274
_trace_depth = old_trace_depth
276
enable_default_logging()
398
"""Is the verbosity level negative?"""
399
return _verbosity_level < 0
403
"""Is the verbosity level positive?"""
404
return _verbosity_level > 0
407
def debug_memory(message='', short=True):
408
"""Write out a memory dump."""
409
if sys.platform == 'win32':
410
from bzrlib import win32utils
411
win32utils.debug_memory_win32api(message=message, short=short)
413
_debug_memory_proc(message=message, short=short)
416
_short_fields = ('VmPeak', 'VmSize', 'VmRSS')
418
def _debug_memory_proc(message='', short=True):
420
status_file = file('/proc/%s/status' % os.getpid(), 'rb')
424
status = status_file.read()
429
for line in status.splitlines():
433
for field in _short_fields:
434
if line.startswith(field):
438
def _dump_memory_usage(err_file):
441
fd, name = tempfile.mkstemp(prefix="bzr_memdump", suffix=".json")
442
dump_file = os.fdopen(fd, 'w')
443
from meliae import scanner
444
scanner.dump_gc_objects(dump_file)
445
err_file.write("Memory dumped to %s\n" % name)
447
err_file.write("Dumping memory requires meliae module.\n")
448
log_exception_quietly()
450
err_file.write("Exception while dumping memory.\n")
451
log_exception_quietly()
453
if dump_file is not None:
459
def _qualified_exception_name(eclass, unqualified_bzrlib_errors=False):
460
"""Give name of error class including module for non-builtin exceptions
462
If `unqualified_bzrlib_errors` is True, errors specific to bzrlib will
463
also omit the module prefix.
465
class_name = eclass.__name__
466
module_name = eclass.__module__
467
if module_name in ("exceptions", "__main__") or (
468
unqualified_bzrlib_errors and module_name == "bzrlib.errors"):
470
return "%s.%s" % (module_name, class_name)
279
473
def report_exception(exc_info, err_file):
280
exc_type, exc_object, exc_tb = exc_info
474
"""Report an exception to err_file (typically stderr) and to .bzr.log.
476
This will show either a full traceback or a short message as appropriate.
478
:return: The appropriate exit code for this error.
281
480
# Log the full traceback to ~/.bzr.log
282
481
log_exception_quietly()
283
if (isinstance(exc_object, IOError)
284
and getattr(exc_object, 'errno', None) == errno.EPIPE):
285
print >>err_file, "bzr: broken pipe"
286
elif isinstance(exc_object, KeyboardInterrupt):
287
print >>err_file, "bzr: interrupted"
482
if 'error' in debug.debug_flags:
483
print_exception(exc_info, err_file)
484
return errors.EXIT_ERROR
485
exc_type, exc_object, exc_tb = exc_info
486
if isinstance(exc_object, KeyboardInterrupt):
487
err_file.write("bzr: interrupted\n")
488
return errors.EXIT_ERROR
489
elif isinstance(exc_object, MemoryError):
490
err_file.write("bzr: out of memory\n")
491
if 'mem_dump' in debug.debug_flags:
492
_dump_memory_usage(err_file)
494
err_file.write("Use -Dmem_dump to dump memory to a file.\n")
495
return errors.EXIT_ERROR
496
elif isinstance(exc_object, ImportError) \
497
and str(exc_object).startswith("No module named "):
498
report_user_error(exc_info, err_file,
499
'You may need to install this Python library separately.')
500
return errors.EXIT_ERROR
288
501
elif not getattr(exc_object, 'internal_error', True):
289
502
report_user_error(exc_info, err_file)
290
elif isinstance(exc_object, (OSError, IOError)):
503
return errors.EXIT_ERROR
504
elif osutils.is_environment_error(exc_object):
505
if getattr(exc_object, 'errno', None) == errno.EPIPE:
506
err_file.write("bzr: broken pipe\n")
507
return errors.EXIT_ERROR
291
508
# Might be nice to catch all of these and show them as something more
292
509
# specific, but there are too many cases at the moment.
293
510
report_user_error(exc_info, err_file)
511
return errors.EXIT_ERROR
295
513
report_bug(exc_info, err_file)
514
return errors.EXIT_INTERNAL_ERROR
517
def print_exception(exc_info, err_file):
518
exc_type, exc_object, exc_tb = exc_info
519
err_file.write("bzr: ERROR: %s.%s: %s\n" % (
520
exc_type.__module__, exc_type.__name__, exc_object))
522
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
298
525
# TODO: Should these be specially encoding the output?
299
def report_user_error(exc_info, err_file):
526
def report_user_error(exc_info, err_file, advice=None):
300
527
"""Report to err_file an error that's not an internal error.
302
529
These don't get a traceback unless -Derror was given.
531
:param exc_info: 3-tuple from sys.exc_info()
532
:param advice: Extra advice to the user to be printed following the
304
if 'error' in debug.debug_flags:
305
report_bug(exc_info, err_file)
307
print >>err_file, "bzr: ERROR:", str(exc_info[1])
535
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
537
err_file.write("%s\n" % (advice,))
310
540
def report_bug(exc_info, err_file):
311
541
"""Report an exception that probably indicates a bug in bzr"""
313
exc_type, exc_object, exc_tb = exc_info
314
print >>err_file, "bzr: ERROR: %s.%s: %s" % (
315
exc_type.__module__, exc_type.__name__, exc_object)
317
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
319
print >>err_file, 'bzr %s on python %s (%s)' % \
321
'.'.join(map(str, sys.version_info)),
323
print >>err_file, 'arguments: %r' % sys.argv
325
print >>err_file, "** please send this report to bazaar@lists.ubuntu.com"
542
from bzrlib.crash import report_bug
543
report_bug(exc_info, err_file)
546
def _flush_stdout_stderr():
547
# called from the bzrlib library finalizer returned by bzrlib.initialize()
551
except ValueError, e:
552
# On Windows, I get ValueError calling stdout.flush() on a closed
557
if e.errno in [errno.EINVAL, errno.EPIPE]:
564
# called from the bzrlib library finalizer returned by bzrlib.initialize()
570
class EncodedStreamHandler(logging.Handler):
571
"""Robustly write logging events to a stream using the specified encoding
573
Messages are expected to be formatted to unicode, but UTF-8 byte strings
574
are also accepted. An error during formatting or a str message in another
575
encoding will be quitely noted as an error in the Bazaar log file.
577
The stream is not closed so sys.stdout or sys.stderr may be passed.
580
def __init__(self, stream, encoding=None, errors='strict', level=0):
581
logging.Handler.__init__(self, level)
584
encoding = getattr(stream, "encoding", "ascii")
585
self.encoding = encoding
589
flush = getattr(self.stream, "flush", None)
590
if flush is not None:
593
def emit(self, record):
595
line = self.format(record)
596
if not isinstance(line, unicode):
597
line = line.decode("utf-8")
598
self.stream.write(line.encode(self.encoding, self.errors) + "\n")
600
log_exception_quietly()
601
# Try saving the details that would have been logged in some form
602
msg = args = "<Unformattable>"
604
msg = repr(record.msg).encode("ascii")
605
args = repr(record.args).encode("ascii")
608
# Using mutter() bypasses the logging module and writes directly
609
# to the file so there's no danger of getting into a loop here.
610
mutter("Logging record unformattable: %s %% %s", msg, args)
613
class Config(object):
614
"""Configuration of message tracing in bzrlib.
616
This implements the context manager protocol and should manage any global
617
variables still used. The default config used is DefaultConfig, but
618
embedded uses of bzrlib may wish to use a custom manager.
622
return self # This is bound to the 'as' clause in a with statement.
624
def __exit__(self, exc_type, exc_val, exc_tb):
625
return False # propogate exceptions.
628
class DefaultConfig(Config):
629
"""A default configuration for tracing of messages in bzrlib.
631
This implements the context manager protocol.
635
self._original_filename = _bzr_log_filename
636
self._original_state = enable_default_logging()
637
return self # This is bound to the 'as' clause in a with statement.
639
def __exit__(self, exc_type, exc_val, exc_tb):
640
pop_log_file(self._original_state)
641
global _bzr_log_filename
642
_bzr_log_filename = self._original_filename
643
return False # propogate exceptions.