35
# TODO: in debug mode, stderr should get full tracebacks and also
36
# debug messages. (Is this really needed?)
38
49
# FIXME: Unfortunately it turns out that python's logging module
39
50
# is quite expensive, even when the message is not printed by any handlers.
40
51
# We should perhaps change back to just simply doing it here.
53
# On the other hand, as of 1.2 we generally only call the mutter() statement
54
# if (according to debug_flags) we actually intend to write it. So the
55
# increased cost of logging.py is not so bad, and we could standardize on
65
from bzrlib.lazy_import import lazy_import
66
lazy_import(globals(), """
67
from cStringIO import StringIO
48
from bzrlib.errors import BzrError, BzrNewError
52
_stderr_handler = None
75
lazy_import(globals(), """
86
# global verbosity for bzrlib; controls the log level for stderr; 0=normal; <0
87
# is quiet; >0 is verbose.
90
# File-like object where mutter/debug output is currently sent. Can be
91
# changed by _push_log_file etc. This is directly manipulated by some
92
# external code; maybe there should be functions to do that more precisely
93
# than push/pop_log_file.
59
class QuietFormatter(logging.Formatter):
60
"""Formatter that suppresses the details of errors.
62
This is used by default on stderr so as not to scare the user.
64
# At first I tried overriding FormatException to suppress the
65
# exception details, but that has global effect: no loggers
66
# can get the exception details is we suppress them here.
68
def format(self, record):
69
if record.levelno >= logging.WARNING:
70
s = 'bzr: ' + record.levelname + ': '
73
s += record.getMessage()
75
s += '\n' + format_exception_short(record.exc_info)
78
# configure convenient aliases for output routines
96
# Absolute path for ~/.bzr.log. Not changed even if the log/trace output is
97
# redirected elsewhere. Used to show the location in --version.
98
_bzr_log_filename = None
100
# The time the first message was written to the trace file, so that we can
101
# show relative times since startup.
102
_bzr_log_start_time = bzrlib._start_time
105
# held in a global for quick reference
80
106
_bzr_logger = logging.getLogger('bzr')
82
109
def note(*args, **kwargs):
110
# FIXME note always emits utf-8, regardless of the terminal encoding
112
# FIXME: clearing the ui and then going through the abstract logging
113
# framework is whack; we should probably have a logging Handler that
114
# deals with terminal output if needed.
84
116
bzrlib.ui.ui_factory.clear_term()
85
117
_bzr_logger.info(*args, **kwargs)
87
120
def warning(*args, **kwargs):
89
122
bzrlib.ui.ui_factory.clear_term()
90
123
_bzr_logger.warning(*args, **kwargs)
126
# configure convenient aliases for output routines
128
# TODO: deprecate them, have one name for each.
93
130
log_error = _bzr_logger.error
94
131
error = _bzr_logger.error
134
_last_mutter_flush_time = None
97
136
def mutter(fmt, *args):
137
global _last_mutter_flush_time
98
138
if _trace_file is None:
100
if hasattr(_trace_file, 'closed') and _trace_file.closed:
140
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
143
if isinstance(fmt, unicode):
144
fmt = fmt.encode('utf8')
102
146
if len(args) > 0:
103
147
# It seems that if we do ascii % (unicode, ascii) we can
104
148
# get a unicode cannot encode ascii error, so make sure that "fmt"
105
149
# is a unicode string
106
out = unicode(fmt) % args
152
if isinstance(arg, unicode):
153
arg = arg.encode('utf8')
154
real_args.append(arg)
155
out = fmt % tuple(real_args)
111
_trace_file.write(out)
112
except UnicodeError, e:
113
warning('UnicodeError: %s', e)
114
_trace_file.write(repr(out))
115
# TODO: jam 20051227 Consider flushing the trace file to help debugging
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
173
def mutter_callsite(stacklevel, fmt, *args):
174
"""Perform a mutter of fmt and args, logging the call trace.
176
:param stacklevel: The number of frames to show. None will show all
178
:param fmt: The format string to pass to mutter.
179
:param args: A list of substitution variables.
182
if stacklevel is None:
185
limit = stacklevel + 1
186
traceback.print_stack(limit=limit, file=outf)
187
formatted_lines = outf.getvalue().splitlines()
188
formatted_stack = '\n'.join(formatted_lines[:-2])
189
mutter(fmt + "\nCalled from:\n%s", *(args + (formatted_stack,)))
120
192
def _rollover_trace_maybe(trace_fname):
124
196
if size <= 4 << 20:
126
198
old_fname = trace_fname + '.old'
127
from osutils import rename
128
rename(trace_fname, old_fname)
199
osutils.rename(trace_fname, old_fname)
133
def open_tracefile(tracefilename='~/.bzr.log'):
134
# Messages are always written to here, so that we have some
135
# information if something goes wrong. In a future version this
136
# file will be removed on successful completion.
137
global _file_handler, _bzr_log_file
140
trace_fname = os.path.join(os.path.expanduser(tracefilename))
141
_rollover_trace_maybe(trace_fname)
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.
221
If the log is more than a particular length, the old file is renamed to
222
.bzr.log.old and a new file is started. Otherwise, we append to the
225
This sets the global _bzr_log_filename.
227
global _bzr_log_filename
228
_bzr_log_filename = _get_bzr_log_filename()
229
_rollover_trace_maybe(_bzr_log_filename)
144
tf = codecs.open(trace_fname, 'at', 'utf8', buffering=LINE_BUFFERED)
147
tf.write("\nthis is a debug log for diagnosing/reporting problems in bzr\n")
148
tf.write("you can delete or truncate this file, or include sections in\n")
149
tf.write("bug reports to bazaar-ng@lists.canonical.com\n\n")
150
_file_handler = logging.StreamHandler(tf)
151
fmt = r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s'
152
datefmt = r'%a %H:%M:%S'
153
_file_handler.setFormatter(logging.Formatter(fmt, datefmt))
154
_file_handler.setLevel(logging.DEBUG)
155
logging.getLogger('').addHandler(_file_handler)
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")
156
239
except IOError, e:
157
240
warning("failed to open trace file: %s" % (e))
160
def log_startup(argv):
161
debug('\n\nbzr %s invoked on python %s (%s)',
163
'.'.join(map(str, sys.version_info)),
165
debug(' arguments: %r', argv)
166
debug(' working dir: %r', os.getcwdu())
169
def log_exception(msg=None):
170
"""Log the last exception to stderr and the trace file.
172
The exception string representation is used as the error
173
summary, unless msg is given.
178
exc_str = format_exception_short(sys.exc_info())
180
log_exception_quietly()
241
# TODO: What should happen if we fail to open the trace file? Maybe the
242
# objects should be pointed at /dev/null or the equivalent? Currently
243
# returns None which will cause failures later.
247
def enable_default_logging():
248
"""Configure default logging: messages to stderr and debug to .bzr.log
250
This should only be called once per process.
252
Non-command-line programs embedding bzrlib do not need to call this. They
253
can instead either pass a file to _push_log_file, or act directly on
254
logging.getLogger("bzr").
256
Output can be redirected away by calling _push_log_file.
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,
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,
268
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
269
r'%Y-%m-%d %H:%M:%S')
270
# after hooking output into bzr_log, we also need to attach a stderr
271
# handler, writing only at level info and with encoding
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)
279
def push_log_file(to_file, log_format=None, date_format=None):
280
"""Intercept log and trace messages and send them to a file.
282
:param to_file: A file-like object to which messages will be sent.
284
:returns: A memento that should be passed to _pop_log_file to restore the
285
previously active logging.
289
new_handler = logging.StreamHandler(to_file)
290
new_handler.setLevel(logging.DEBUG)
291
if log_format is None:
292
log_format = '%(levelname)8s %(message)s'
293
new_handler.setFormatter(logging.Formatter(log_format, date_format))
294
# save and remove any existing log handlers
295
bzr_logger = logging.getLogger('bzr')
296
old_handlers = bzr_logger.handlers[:]
297
del bzr_logger.handlers[:]
298
# set that as the default logger
299
bzr_logger.addHandler(new_handler)
300
bzr_logger.setLevel(logging.DEBUG)
301
# TODO: check if any changes are needed to the root logger
303
# TODO: also probably need to save and restore the level on bzr_logger.
304
# but maybe we can avoid setting the logger level altogether, and just set
305
# the level on the handler?
307
# save the old trace file
308
old_trace_file = _trace_file
309
# send traces to the new one
310
_trace_file = to_file
311
result = new_handler, _trace_file
312
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
315
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
316
"""Undo changes to logging/tracing done by _push_log_file.
318
This flushes, but does not close the trace file.
320
Takes the memento returned from _push_log_file."""
322
_trace_file = old_trace_file
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
326
# file will likely already be closed underneath.
328
bzr_logger.handlers = old_handlers
329
new_trace_file.flush()
332
@symbol_versioning.deprecated_function(symbol_versioning.one_two)
333
def enable_test_log(to_file):
334
"""Redirect logging to a temporary file for a test
336
:returns: an opaque reference that should be passed to disable_test_log
337
after the test completes.
339
return push_log_file(to_file)
342
@symbol_versioning.deprecated_function(symbol_versioning.one_two)
343
def disable_test_log(memento):
344
return pop_log_file(memento)
183
347
def log_exception_quietly():
187
351
interesting to developers but not to users. For example,
188
352
errors loading plugins.
191
debug(traceback.format_exc())
194
def enable_default_logging():
195
"""Configure default logging to stderr and .bzr.log"""
196
# FIXME: if this is run twice, things get confused
197
global _stderr_handler, _file_handler, _trace_file, _bzr_log_file
198
_stderr_handler = logging.StreamHandler()
199
_stderr_handler.setFormatter(QuietFormatter())
200
logging.getLogger('').addHandler(_stderr_handler)
201
_stderr_handler.setLevel(logging.INFO)
202
if not _file_handler:
204
_trace_file = _bzr_log_file
206
_file_handler.setLevel(logging.DEBUG)
207
_bzr_logger.setLevel(logging.DEBUG)
354
mutter(traceback.format_exc())
357
def set_verbosity_level(level):
358
"""Set the verbosity level.
360
:param level: -ve for quiet, 0 for normal, +ve for verbose
362
global _verbosity_level
363
_verbosity_level = level
364
_update_logging_level(level < 0)
367
def get_verbosity_level():
368
"""Get the verbosity level.
370
See set_verbosity_level() for values.
372
return _verbosity_level
211
375
def be_quiet(quiet=True):
212
global _stderr_handler, _stderr_quiet
214
_stderr_quiet = quiet
216
_stderr_handler.setLevel(logging.WARNING)
218
_stderr_handler.setLevel(logging.INFO)
376
# Perhaps this could be deprecated now ...
378
set_verbosity_level(-1)
380
set_verbosity_level(0)
383
def _update_logging_level(quiet=True):
384
"""Hide INFO messages if quiet."""
386
_bzr_logger.setLevel(logging.WARNING)
388
_bzr_logger.setLevel(logging.INFO)
392
"""Is the verbosity level negative?"""
393
return _verbosity_level < 0
397
"""Is the verbosity level positive?"""
398
return _verbosity_level > 0
401
@symbol_versioning.deprecated_function(symbol_versioning.one_two)
226
402
def disable_default_logging():
227
403
"""Turn off default log handlers.
229
This is intended to be used by the test framework, which doesn't
230
want leakage from the code-under-test into the main logs.
233
l = logging.getLogger('')
234
l.removeHandler(_stderr_handler)
236
l.removeHandler(_file_handler)
240
def enable_test_log(to_file):
241
"""Redirect logging to a temporary file for a test
243
returns an opaque reference that should be passed to disable_test_log
244
after the test completes.
246
disable_default_logging()
249
hdlr = logging.StreamHandler(to_file)
250
hdlr.setLevel(logging.DEBUG)
251
hdlr.setFormatter(logging.Formatter('%(levelname)8s %(message)s'))
252
_bzr_logger.addHandler(hdlr)
253
_bzr_logger.setLevel(logging.DEBUG)
254
result = hdlr, _trace_file, _trace_depth
255
_trace_file = to_file
260
def disable_test_log((test_log_hdlr, old_trace_file, old_trace_depth)):
261
_bzr_logger.removeHandler(test_log_hdlr)
262
test_log_hdlr.close()
265
_trace_file = old_trace_file
266
_trace_depth = old_trace_depth
268
enable_default_logging()
271
def format_exception_short(exc_info):
272
"""Make a short string form of an exception.
274
This is used for display to stderr. It specially handles exception
275
classes without useful string methods.
277
The result has no trailing newline.
279
exc_info - typically an exception from sys.exc_info()
281
exc_type, exc_object, exc_tb = exc_info
284
return '(no exception)'
285
if isinstance(exc_object, (BzrError, BzrNewError)):
286
return str(exc_object)
405
Don't call this method, use _push_log_file and _pop_log_file instead.
410
_short_fields = ('VmPeak', 'VmSize', 'VmRSS')
412
def debug_memory(message='', short=True):
413
"""Write out a memory dump."""
415
status_file = file('/proc/%s/status' % os.getpid(), 'rb')
419
status = status_file.read()
424
for line in status.splitlines():
289
tb = traceback.extract_tb(exc_tb)
290
msg = '%s: %s' % (exc_type, exc_object)
294
msg += '\n at %s line %d\n in %s' % (tb[-1][:3])
296
except Exception, formatting_exc:
297
# XXX: is this really better than just letting it run up?
298
return '(error formatting exception of type %s: %s)' \
299
% (exc_type, formatting_exc)
428
for field in _short_fields:
429
if line.startswith(field):
434
def report_exception(exc_info, err_file):
435
"""Report an exception to err_file (typically stderr) and to .bzr.log.
437
This will show either a full traceback or a short message as appropriate.
439
:return: The appropriate exit code for this error.
441
exc_type, exc_object, exc_tb = exc_info
442
# Log the full traceback to ~/.bzr.log
443
log_exception_quietly()
444
if (isinstance(exc_object, IOError)
445
and getattr(exc_object, 'errno', None) == errno.EPIPE):
446
err_file.write("bzr: broken pipe\n")
447
return errors.EXIT_ERROR
448
elif isinstance(exc_object, KeyboardInterrupt):
449
err_file.write("bzr: interrupted\n")
450
return errors.EXIT_ERROR
451
elif isinstance(exc_object, ImportError) \
452
and str(exc_object).startswith("No module named "):
453
report_user_error(exc_info, err_file,
454
'You may need to install this Python library separately.')
455
return errors.EXIT_ERROR
456
elif not getattr(exc_object, 'internal_error', True):
457
report_user_error(exc_info, err_file)
458
return errors.EXIT_ERROR
459
elif isinstance(exc_object, (OSError, IOError)):
460
# Might be nice to catch all of these and show them as something more
461
# specific, but there are too many cases at the moment.
462
report_user_error(exc_info, err_file)
463
return errors.EXIT_ERROR
465
report_bug(exc_info, err_file)
466
return errors.EXIT_INTERNAL_ERROR
469
def print_exception(exc_info, err_file):
470
exc_type, exc_object, exc_tb = exc_info
471
err_file.write("bzr: ERROR: %s.%s: %s\n" % (
472
exc_type.__module__, exc_type.__name__, exc_object))
474
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
477
# TODO: Should these be specially encoding the output?
478
def report_user_error(exc_info, err_file, advice=None):
479
"""Report to err_file an error that's not an internal error.
481
These don't get a traceback unless -Derror was given.
483
:param exc_info: 3-tuple from sys.exc_info()
484
:param advice: Extra advice to the user to be printed following the
487
if 'error' in debug.debug_flags:
488
print_exception(exc_info, err_file)
490
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
492
err_file.write("%s\n" % (advice,))
495
def report_bug(exc_info, err_file):
496
"""Report an exception that probably indicates a bug in bzr"""
497
print_exception(exc_info, err_file)
499
err_file.write('bzr %s on python %s (%s)\n' % \
501
bzrlib._format_version_tuple(sys.version_info),
503
err_file.write('arguments: %r\n' % sys.argv)
505
'encoding: %r, fsenc: %r, lang: %r\n' % (
506
osutils.get_user_encoding(), sys.getfilesystemencoding(),
507
os.environ.get('LANG')))
508
err_file.write("plugins:\n")
509
for name, a_plugin in sorted(plugin.plugins().items()):
510
err_file.write(" %-20s %s [%s]\n" %
511
(name, a_plugin.path(), a_plugin.__version__))
514
*** Bazaar has encountered an internal error.
515
Please report a bug at https://bugs.launchpad.net/bzr/+filebug
516
including this traceback, and a description of what you
517
were doing when the error occurred.
added
removed
bzrlib/trace.py
