34
20
Output to stderr depends on the mode chosen by the user. By default, messages
35
21
of info and above are sent out, which results in progress messages such as the
36
list of files processed by add and commit. In debug mode, stderr gets debug messages too.
22
list of files processed by add and commit. In quiet mode, only warnings and
23
above are shown. In debug mode, stderr gets debug messages too.
38
25
Errors that terminate an operation are generally passed back as exceptions;
39
26
others may be just emitted as messages.
41
28
Exceptions are reported in a brief form to stderr so as not to look scary.
42
29
BzrErrors are required to be able to format themselves into a properly
43
explanatory message. This is not true for builtin exceptions such as
30
explanatory message. This is not true for builtin excexceptions such as
44
31
KeyError, which typically just str to "0". They're printed in a different
35
# TODO: in debug mode, stderr should get full tracebacks and also
36
# debug messages. (Is this really needed?)
48
38
# FIXME: Unfortunately it turns out that python's logging module
49
39
# is quite expensive, even when the message is not printed by any handlers.
50
40
# We should perhaps change back to just simply doing it here.
52
# On the other hand, as of 1.2 we generally only call the mutter() statement
53
# if (according to debug_flags) we actually intend to write it. So the
54
# increased cost of logging.py is not so bad, and we could standardize on
63
from bzrlib.lazy_import import lazy_import
64
lazy_import(globals(), """
65
from cStringIO import StringIO
73
from bzrlib.symbol_versioning import (
78
lazy_import(globals(), """
90
# global verbosity for bzrlib; controls the log level for stderr; 0=normal; <0
91
# is quiet; >0 is verbose.
94
# File-like object where mutter/debug output is currently sent. Can be
95
# changed by _push_log_file etc. This is directly manipulated by some
96
# external code; maybe there should be functions to do that more precisely
97
# than push/pop_log_file.
48
from bzrlib.errors import BzrError, BzrNewError
52
_stderr_handler = None
100
# Absolute path for ~/.bzr.log. Not changed even if the log/trace output is
101
# redirected elsewhere. Used to show the location in --version.
102
_bzr_log_filename = None
104
# The time the first message was written to the trace file, so that we can
105
# show relative times since startup.
106
_bzr_log_start_time = bzrlib._start_time
109
# held in a global for quick reference
58
class QuietFormatter(logging.Formatter):
59
"""Formatter that supresses the details of errors.
61
This is used by default on stderr so as not to scare the user.
63
# At first I tried overriding formatException to suppress the
64
# exception details, but that has global effect: no loggers
65
# can get the exception details is we suppress them here.
67
def format(self, record):
68
if record.levelno >= logging.WARNING:
69
s = 'bzr: ' + record.levelname + ': '
72
s += record.getMessage()
74
s += '\n' + format_exception_short(record.exc_info)
77
# configure convenient aliases for output routines
110
79
_bzr_logger = logging.getLogger('bzr')
113
81
def note(*args, **kwargs):
114
# FIXME note always emits utf-8, regardless of the terminal encoding
116
# FIXME: clearing the ui and then going through the abstract logging
117
# framework is whack; we should probably have a logging Handler that
118
# deals with terminal output if needed.
120
83
bzrlib.ui.ui_factory.clear_term()
121
84
_bzr_logger.info(*args, **kwargs)
124
86
def warning(*args, **kwargs):
126
88
bzrlib.ui.ui_factory.clear_term()
127
89
_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)
148
def show_error(*args, **kwargs):
149
"""Show an error message to the user.
151
Don't use this for exceptions, use report_exception instead.
153
_bzr_logger.error(*args, **kwargs)
92
log_error = _bzr_logger.error
93
error = _bzr_logger.error
156
96
def mutter(fmt, *args):
157
97
if _trace_file is None:
159
# XXX: Don't check this every time; instead anyone who closes the file
160
# ought to deregister it. We can tolerate None.
161
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
99
if hasattr(_trace_file, 'closed') and _trace_file.closed:
164
if isinstance(fmt, unicode):
165
fmt = fmt.encode('utf8')
167
101
if len(args) > 0:
168
102
# It seems that if we do ascii % (unicode, ascii) we can
169
103
# get a unicode cannot encode ascii error, so make sure that "fmt"
170
104
# 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)
105
out = unicode(fmt) % args
180
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
181
out = timestamp + out + '\n'
182
_trace_file.write(out)
183
# there's no explicit flushing; the file is typically line buffered.
186
def mutter_callsite(stacklevel, fmt, *args):
187
"""Perform a mutter of fmt and args, logging the call trace.
189
:param stacklevel: The number of frames to show. None will show all
191
:param fmt: The format string to pass to mutter.
192
:param args: A list of substitution variables.
195
if stacklevel is None:
198
limit = stacklevel + 1
199
traceback.print_stack(limit=limit, file=outf)
200
formatted_lines = outf.getvalue().splitlines()
201
formatted_stack = '\n'.join(formatted_lines[:-2])
202
mutter(fmt + "\nCalled from:\n%s", *(args + (formatted_stack,)))
110
_trace_file.write(out)
111
except UnicodeError, e:
112
warning('UnicodeError: %s', e)
113
_trace_file.write(repr(out))
114
# TODO: jam 20051227 Consider flushing the trace file to help debugging
205
119
def _rollover_trace_maybe(trace_fname):
209
123
if size <= 4 << 20:
211
125
old_fname = trace_fname + '.old'
212
osutils.rename(trace_fname, old_fname)
126
from osutils import rename
127
rename(trace_fname, old_fname)
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.
234
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
238
This sets the global _bzr_log_filename.
240
global _bzr_log_filename
242
def _open_or_create_log_file(filename):
243
"""Open existing log file, or create with ownership and permissions
245
It inherits the ownership and permissions (masked by umask) from
246
the containing directory to cope better with being run under sudo
247
with $HOME still set to the user's homedir.
249
flags = os.O_WRONLY | os.O_APPEND | osutils.O_TEXT
252
fd = os.open(filename, flags)
255
if e.errno != errno.ENOENT:
258
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
260
if e.errno != errno.EEXIST:
263
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)
132
def open_tracefile(tracefilename='~/.bzr.log'):
133
# Messages are always written to here, so that we have some
134
# information if something goes wrong. In a future version this
135
# file will be removed on successful completion.
136
global _file_handler, _bzr_log_file
139
trace_fname = os.path.join(os.path.expanduser(tracefilename))
140
_rollover_trace_maybe(trace_fname)
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:
281
# If we are failing to open the log, then most likely logging has not
282
# been set up yet. So we just write to stderr rather than using
283
# 'warning()'. If we using warning(), users get the unhelpful 'no
284
# handlers registered for "bzr"' when something goes wrong on the
285
# server. (bug #503886)
286
sys.stderr.write("failed to open trace file: %s\n" % (e,))
287
# TODO: What should happen if we fail to open the trace file? Maybe the
288
# objects should be pointed at /dev/null or the equivalent? Currently
289
# returns None which will cause failures later.
293
def enable_default_logging():
294
"""Configure default logging: messages to stderr and debug to .bzr.log
296
This should only be called once per process.
298
Non-command-line programs embedding bzrlib do not need to call this. They
299
can instead either pass a file to _push_log_file, or act directly on
300
logging.getLogger("bzr").
302
Output can be redirected away by calling _push_log_file.
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,
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,
314
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
315
r'%Y-%m-%d %H:%M:%S')
316
# after hooking output into bzr_log, we also need to attach a stderr
317
# 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)
325
def push_log_file(to_file, log_format=None, date_format=None):
326
"""Intercept log and trace messages and send them to a file.
328
:param to_file: A file-like object to which messages will be sent.
330
:returns: A memento that should be passed to _pop_log_file to restore the
331
previously active logging.
335
new_handler = logging.StreamHandler(to_file)
336
new_handler.setLevel(logging.DEBUG)
337
if log_format is None:
338
log_format = '%(levelname)8s %(message)s'
339
new_handler.setFormatter(logging.Formatter(log_format, date_format))
340
# save and remove any existing log handlers
341
bzr_logger = logging.getLogger('bzr')
342
old_handlers = bzr_logger.handlers[:]
343
del bzr_logger.handlers[:]
344
# set that as the default logger
345
bzr_logger.addHandler(new_handler)
346
bzr_logger.setLevel(logging.DEBUG)
347
# 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.
350
# but maybe we can avoid setting the logger level altogether, and just set
351
# the level on the handler?
353
# save the old trace file
354
old_trace_file = _trace_file
355
# send traces to the new one
356
_trace_file = to_file
357
result = new_handler, _trace_file
358
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)):
362
"""Undo changes to logging/tracing done by _push_log_file.
364
This flushes, but does not close the trace file.
366
Takes the memento returned from _push_log_file."""
368
_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
372
# file will likely already be closed underneath.
374
bzr_logger.handlers = old_handlers
375
new_trace_file.flush()
143
tf = codecs.open(trace_fname, 'at', 'utf8', buffering=LINE_BUFFERED)
146
tf.write("\nthis is a debug log for diagnosing/reporting problems in bzr\n")
147
tf.write("you can delete or truncate this file, or include sections in\n")
148
tf.write("bug reports to bazaar-ng@lists.canonical.com\n\n")
149
_file_handler = logging.StreamHandler(tf)
150
fmt = r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s'
151
datefmt = r'%a %H:%M:%S'
152
_file_handler.setFormatter(logging.Formatter(fmt, datefmt))
153
_file_handler.setLevel(logging.DEBUG)
154
logging.getLogger('').addHandler(_file_handler)
156
warning("failed to open trace file: %s" % (e))
159
def log_startup(argv):
160
debug('\n\nbzr %s invoked on python %s (%s)',
162
'.'.join(map(str, sys.version_info)),
164
debug(' arguments: %r', argv)
165
debug(' working dir: %r', os.getcwdu())
168
def log_exception(msg=None):
169
"""Log the last exception to stderr and the trace file.
171
The exception string representation is used as the error
172
summary, unless msg is given.
177
exc_str = format_exception_short(sys.exc_info())
179
log_exception_quietly()
378
182
def log_exception_quietly():
379
183
"""Log the last exception to the trace file only.
381
Used for exceptions that occur internally and that may be
382
interesting to developers but not to users. For example,
185
Used for exceptions that occur internally and that may be
186
interesting to developers but not to users. For example,
383
187
errors loading plugins.
385
mutter(traceback.format_exc())
388
def set_verbosity_level(level):
389
"""Set the verbosity level.
391
:param level: -ve for quiet, 0 for normal, +ve for verbose
393
global _verbosity_level
394
_verbosity_level = level
395
_update_logging_level(level < 0)
396
ui.ui_factory.be_quiet(level < 0)
399
def get_verbosity_level():
400
"""Get the verbosity level.
402
See set_verbosity_level() for values.
404
return _verbosity_level
190
debug(traceback.format_exc())
193
def enable_default_logging():
194
"""Configure default logging to stderr and .bzr.log"""
195
# FIXME: if this is run twice, things get confused
196
global _stderr_handler, _file_handler, _trace_file, _bzr_log_file
197
_stderr_handler = logging.StreamHandler()
198
_stderr_handler.setFormatter(QuietFormatter())
199
logging.getLogger('').addHandler(_stderr_handler)
200
_stderr_handler.setLevel(logging.INFO)
201
if not _file_handler:
203
_trace_file = _bzr_log_file
205
_file_handler.setLevel(logging.DEBUG)
206
_bzr_logger.setLevel(logging.DEBUG)
407
210
def be_quiet(quiet=True):
409
set_verbosity_level(-1)
411
set_verbosity_level(0)
414
def _update_logging_level(quiet=True):
415
"""Hide INFO messages if quiet."""
417
_bzr_logger.setLevel(logging.WARNING)
419
_bzr_logger.setLevel(logging.INFO)
211
global _stderr_handler, _stderr_quiet
213
_stderr_quiet = quiet
215
_stderr_handler.setLevel(logging.WARNING)
217
_stderr_handler.setLevel(logging.INFO)
423
"""Is the verbosity level negative?"""
424
return _verbosity_level < 0
428
"""Is the verbosity level positive?"""
429
return _verbosity_level > 0
432
def debug_memory(message='', short=True):
433
"""Write out a memory dump."""
434
if sys.platform == 'win32':
435
from bzrlib import win32utils
436
win32utils.debug_memory_win32api(message=message, short=short)
438
_debug_memory_proc(message=message, short=short)
441
_short_fields = ('VmPeak', 'VmSize', 'VmRSS')
443
def _debug_memory_proc(message='', short=True):
445
status_file = file('/proc/%s/status' % os.getpid(), 'rb')
449
status = status_file.read()
454
for line in status.splitlines():
458
for field in _short_fields:
459
if line.startswith(field):
464
def report_exception(exc_info, err_file):
465
"""Report an exception to err_file (typically stderr) and to .bzr.log.
467
This will show either a full traceback or a short message as appropriate.
469
:return: The appropriate exit code for this error.
471
# Log the full traceback to ~/.bzr.log
472
log_exception_quietly()
473
if 'error' in debug.debug_flags:
474
print_exception(exc_info, err_file)
475
return errors.EXIT_ERROR
476
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")
483
return errors.EXIT_ERROR
484
elif isinstance(exc_object, MemoryError):
485
err_file.write("bzr: out of memory\n")
486
return errors.EXIT_ERROR
487
elif isinstance(exc_object, ImportError) \
488
and str(exc_object).startswith("No module named "):
489
report_user_error(exc_info, err_file,
490
'You may need to install this Python library separately.')
491
return errors.EXIT_ERROR
492
elif not getattr(exc_object, 'internal_error', True):
493
report_user_error(exc_info, err_file)
494
return errors.EXIT_ERROR
495
elif isinstance(exc_object, (OSError, IOError)):
496
# Might be nice to catch all of these and show them as something more
497
# specific, but there are too many cases at the moment.
498
report_user_error(exc_info, err_file)
499
return errors.EXIT_ERROR
501
report_bug(exc_info, err_file)
502
return errors.EXIT_INTERNAL_ERROR
505
def print_exception(exc_info, err_file):
506
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))
510
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
513
# TODO: Should these be specially encoding the output?
514
def report_user_error(exc_info, err_file, advice=None):
515
"""Report to err_file an error that's not an internal error.
517
These don't get a traceback unless -Derror was given.
519
:param exc_info: 3-tuple from sys.exc_info()
520
:param advice: Extra advice to the user to be printed following the
523
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
525
err_file.write("%s\n" % (advice,))
528
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
531
report_bug(exc_info, err_file)
534
def _flush_stdout_stderr():
535
# installed into an atexit hook by bzrlib.initialize()
541
if e.errno in [errno.EINVAL, errno.EPIPE]:
548
# run from atexit hook
225
def disable_default_logging():
226
"""Turn off default log handlers.
228
This is intended to be used by the test framework, which doesn't
229
want leakage from the code-under-test into the main logs.
232
l = logging.getLogger('')
233
l.removeHandler(_stderr_handler)
235
l.removeHandler(_file_handler)
239
def enable_test_log(to_file):
240
"""Redirect logging to a temporary file for a test
242
returns an opaque reference that should be passed to disable_test_log
243
after the test complete.
245
disable_default_logging()
549
246
global _trace_file
247
hdlr = logging.StreamHandler(to_file)
248
hdlr.setLevel(logging.DEBUG)
249
hdlr.setFormatter(logging.Formatter('%(levelname)8s %(message)s'))
250
_bzr_logger.addHandler(hdlr)
251
_bzr_logger.setLevel(logging.DEBUG)
252
result = hdlr, _trace_file
253
_trace_file = to_file
257
def disable_test_log((test_log_hdlr, old_trace_file)):
258
_bzr_logger.removeHandler(test_log_hdlr)
259
test_log_hdlr.close()
260
_trace_file = old_trace_file
261
enable_default_logging()
264
def format_exception_short(exc_info):
265
"""Make a short string form of an exception.
267
This is used for display to stderr. It specially handles exception
268
classes without useful string methods.
270
The result has no trailing newline.
272
exc_info - typically an exception from sys.exc_info()
274
exc_type, exc_object, exc_tb = exc_info
277
return '(no exception)'
278
if isinstance(exc_object, (BzrError, BzrNewError)):
279
return str(exc_object)
282
tb = traceback.extract_tb(exc_tb)
283
msg = '%s: %s' % (exc_type, exc_object)
287
msg += '\n at %s line %d\n in %s' % (tb[-1][:3])
289
except Exception, formatting_exc:
290
# XXX: is this really better than just letting it run up?
291
return '(error formatting exception of type %s: %s)' \
292
% (exc_type, formatting_exc)
added
removed
bzrlib/trace.py
