28
42
Exceptions are reported in a brief form to stderr so as not to look scary.
29
43
BzrErrors are required to be able to format themselves into a properly
30
explanatory message. This is not true for builtin excexceptions such as
44
explanatory message. This is not true for builtin exceptions such as
31
45
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?)
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
64
from bzrlib.lazy_import import lazy_import
65
lazy_import(globals(), """
66
from cStringIO import StringIO
48
from bzrlib.errors import BzrError, BzrNewError
52
_stderr_handler = None
74
from bzrlib.symbol_versioning import (
79
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.
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
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
79
110
_bzr_logger = logging.getLogger('bzr')
81
113
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.
83
120
bzrlib.ui.ui_factory.clear_term()
84
121
_bzr_logger.info(*args, **kwargs)
86
124
def warning(*args, **kwargs):
88
126
bzrlib.ui.ui_factory.clear_term()
89
127
_bzr_logger.warning(*args, **kwargs)
92
log_error = _bzr_logger.error
93
error = _bzr_logger.error
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)
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)
156
_last_mutter_flush_time = None
96
159
def mutter(fmt, *args):
160
global _last_mutter_flush_time
97
161
if _trace_file is None:
99
if hasattr(_trace_file, 'closed') and _trace_file.closed:
163
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
166
if isinstance(fmt, unicode):
167
fmt = fmt.encode('utf8')
101
169
if len(args) > 0:
170
# It seems that if we do ascii % (unicode, ascii) we can
171
# get a unicode cannot encode ascii error, so make sure that "fmt"
172
# is a unicode string
175
if isinstance(arg, unicode):
176
arg = arg.encode('utf8')
177
real_args.append(arg)
178
out = fmt % tuple(real_args)
182
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
183
out = timestamp + out + '\n'
106
184
_trace_file.write(out)
185
# We flush if we haven't flushed for a few seconds. We don't want to flush
186
# on every mutter, but when a command takes a while, it can be nice to see
187
# updates in the debug log.
188
if (_last_mutter_flush_time is None
189
or (now - _last_mutter_flush_time) > 2.0):
190
flush = getattr(_trace_file, 'flush', None)
191
if flush is not None:
193
_last_mutter_flush_time = now
196
def mutter_callsite(stacklevel, fmt, *args):
197
"""Perform a mutter of fmt and args, logging the call trace.
199
:param stacklevel: The number of frames to show. None will show all
201
:param fmt: The format string to pass to mutter.
202
:param args: A list of substitution variables.
205
if stacklevel is None:
208
limit = stacklevel + 1
209
traceback.print_stack(limit=limit, file=outf)
210
formatted_lines = outf.getvalue().splitlines()
211
formatted_stack = '\n'.join(formatted_lines[:-2])
212
mutter(fmt + "\nCalled from:\n%s", *(args + (formatted_stack,)))
110
215
def _rollover_trace_maybe(trace_fname):
114
219
if size <= 4 << 20:
116
221
old_fname = trace_fname + '.old'
117
from osutils import rename
118
rename(trace_fname, old_fname)
222
osutils.rename(trace_fname, old_fname)
123
def open_tracefile(tracefilename='~/.bzr.log'):
124
# Messages are always written to here, so that we have some
125
# information if something goes wrong. In a future version this
126
# file will be removed on successful completion.
127
global _file_handler, _bzr_log_file
130
trace_fname = os.path.join(os.path.expanduser(tracefilename))
131
_rollover_trace_maybe(trace_fname)
227
def _get_bzr_log_filename():
228
bzr_log = os.environ.get('BZR_LOG')
231
home = os.environ.get('BZR_HOME')
233
if sys.platform == 'win32':
234
from bzrlib import win32utils
235
home = win32utils.get_home_location()
237
home = os.path.expanduser('~')
238
return os.path.join(home, '.bzr.log')
242
"""Open the .bzr.log trace file.
244
If the log is more than a particular length, the old file is renamed to
245
.bzr.log.old and a new file is started. Otherwise, we append to the
248
This sets the global _bzr_log_filename.
250
global _bzr_log_filename
251
_bzr_log_filename = _get_bzr_log_filename()
252
_rollover_trace_maybe(_bzr_log_filename)
134
tf = codecs.open(trace_fname, 'at', 'utf8', buffering=LINE_BUFFERED)
137
tf.write("\nthis is a debug log for diagnosing/reporting problems in bzr\n")
138
tf.write("you can delete or truncate this file, or include sections in\n")
139
tf.write("bug reports to bazaar-ng@lists.canonical.com\n\n")
140
_file_handler = logging.StreamHandler(tf)
141
fmt = r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s'
142
datefmt = r'%a %H:%M:%S'
143
_file_handler.setFormatter(logging.Formatter(fmt, datefmt))
144
_file_handler.setLevel(logging.DEBUG)
145
logging.getLogger('').addHandler(_file_handler)
254
bzr_log_file = open(_bzr_log_filename, 'at', 1) # line buffered
255
# bzr_log_file.tell() on windows always return 0 until some writing done
256
bzr_log_file.write('\n')
257
if bzr_log_file.tell() <= 2:
258
bzr_log_file.write("this is a debug log for diagnosing/reporting problems in bzr\n")
259
bzr_log_file.write("you can delete or truncate this file, or include sections in\n")
260
bzr_log_file.write("bug reports to https://bugs.launchpad.net/bzr/+filebug\n\n")
146
262
except IOError, e:
147
263
warning("failed to open trace file: %s" % (e))
150
def log_startup(argv):
151
debug('\n\nbzr %s invoked on python %s (%s)',
153
'.'.join(map(str, sys.version_info)),
155
debug(' arguments: %r', argv)
156
debug(' working dir: %r', os.getcwdu())
159
def log_exception(msg=None):
160
"""Log the last exception to stderr and the trace file.
162
The exception string representation is used as the error
163
summary, unless msg is given.
168
exc_str = format_exception_short(sys.exc_info())
170
log_exception_quietly()
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
# Do this before we open the log file, so we prevent
282
# get_terminal_encoding() from mutter()ing multiple times
283
term_encoding = osutils.get_terminal_encoding()
284
start_time = osutils.format_local_date(_bzr_log_start_time,
286
# create encoded wrapper around stderr
287
bzr_log_file = _open_bzr_log()
288
if bzr_log_file is not None:
289
bzr_log_file.write(start_time.encode('utf-8') + '\n')
290
push_log_file(bzr_log_file,
291
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
292
r'%Y-%m-%d %H:%M:%S')
293
# after hooking output into bzr_log, we also need to attach a stderr
294
# handler, writing only at level info and with encoding
295
writer_factory = codecs.getwriter(term_encoding)
296
encoded_stderr = writer_factory(sys.stderr, errors='replace')
297
stderr_handler = logging.StreamHandler(encoded_stderr)
298
stderr_handler.setLevel(logging.INFO)
299
logging.getLogger('bzr').addHandler(stderr_handler)
302
def push_log_file(to_file, log_format=None, date_format=None):
303
"""Intercept log and trace messages and send them to a file.
305
:param to_file: A file-like object to which messages will be sent.
307
:returns: A memento that should be passed to _pop_log_file to restore the
308
previously active logging.
312
new_handler = logging.StreamHandler(to_file)
313
new_handler.setLevel(logging.DEBUG)
314
if log_format is None:
315
log_format = '%(levelname)8s %(message)s'
316
new_handler.setFormatter(logging.Formatter(log_format, date_format))
317
# save and remove any existing log handlers
318
bzr_logger = logging.getLogger('bzr')
319
old_handlers = bzr_logger.handlers[:]
320
del bzr_logger.handlers[:]
321
# set that as the default logger
322
bzr_logger.addHandler(new_handler)
323
bzr_logger.setLevel(logging.DEBUG)
324
# TODO: check if any changes are needed to the root logger
326
# TODO: also probably need to save and restore the level on bzr_logger.
327
# but maybe we can avoid setting the logger level altogether, and just set
328
# the level on the handler?
330
# save the old trace file
331
old_trace_file = _trace_file
332
# send traces to the new one
333
_trace_file = to_file
334
result = new_handler, _trace_file
335
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
338
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
339
"""Undo changes to logging/tracing done by _push_log_file.
341
This flushes, but does not close the trace file.
343
Takes the memento returned from _push_log_file."""
345
_trace_file = old_trace_file
346
bzr_logger = logging.getLogger('bzr')
347
bzr_logger.removeHandler(new_handler)
348
# must be closed, otherwise logging will try to close it atexit, and the
349
# file will likely already be closed underneath.
351
bzr_logger.handlers = old_handlers
352
new_trace_file.flush()
173
355
def log_exception_quietly():
174
356
"""Log the last exception to the trace file only.
176
Used for exceptions that occur internally and that may be
177
interesting to developers but not to users. For example,
358
Used for exceptions that occur internally and that may be
359
interesting to developers but not to users. For example,
178
360
errors loading plugins.
181
debug(traceback.format_exc())
184
def enable_default_logging():
185
"""Configure default logging to stderr and .bzr.log"""
186
# FIXME: if this is run twice, things get confused
187
global _stderr_handler, _file_handler, _trace_file, _bzr_log_file
188
_stderr_handler = logging.StreamHandler()
189
_stderr_handler.setFormatter(QuietFormatter())
190
logging.getLogger('').addHandler(_stderr_handler)
191
_stderr_handler.setLevel(logging.INFO)
192
if not _file_handler:
194
_trace_file = _bzr_log_file
196
_file_handler.setLevel(logging.DEBUG)
197
_bzr_logger.setLevel(logging.DEBUG)
362
mutter(traceback.format_exc())
365
def set_verbosity_level(level):
366
"""Set the verbosity level.
368
:param level: -ve for quiet, 0 for normal, +ve for verbose
370
global _verbosity_level
371
_verbosity_level = level
372
_update_logging_level(level < 0)
375
def get_verbosity_level():
376
"""Get the verbosity level.
378
See set_verbosity_level() for values.
380
return _verbosity_level
201
383
def be_quiet(quiet=True):
202
global _stderr_handler, _stderr_quiet
204
_stderr_quiet = quiet
206
_stderr_handler.setLevel(logging.WARNING)
208
_stderr_handler.setLevel(logging.INFO)
384
# Perhaps this could be deprecated now ...
386
set_verbosity_level(-1)
388
set_verbosity_level(0)
391
def _update_logging_level(quiet=True):
392
"""Hide INFO messages if quiet."""
394
_bzr_logger.setLevel(logging.WARNING)
396
_bzr_logger.setLevel(logging.INFO)
216
def disable_default_logging():
217
"""Turn off default log handlers.
219
This is intended to be used by the test framework, which doesn't
220
want leakage from the code-under-test into the main logs.
223
l = logging.getLogger('')
224
l.removeHandler(_stderr_handler)
226
l.removeHandler(_file_handler)
230
def enable_test_log(to_file):
231
"""Redirect logging to a temporary file for a test
233
returns an opaque reference that should be passed to disable_test_log
234
after the test complete.
236
disable_default_logging()
238
hdlr = logging.StreamHandler(to_file)
239
hdlr.setLevel(logging.DEBUG)
240
hdlr.setFormatter(logging.Formatter('%(levelname)8s %(message)s'))
241
_bzr_logger.addHandler(hdlr)
242
_bzr_logger.setLevel(logging.DEBUG)
243
result = hdlr, _trace_file
244
_trace_file = to_file
248
def disable_test_log((test_log_hdlr, old_trace_file)):
249
_bzr_logger.removeHandler(test_log_hdlr)
250
test_log_hdlr.close()
251
_trace_file = old_trace_file
252
enable_default_logging()
255
def format_exception_short(exc_info):
256
"""Make a short string form of an exception.
258
This is used for display to stderr. It specially handles exception
259
classes without useful string methods.
261
The result has no trailing newline.
263
exc_info - typically an exception from sys.exc_info()
265
exc_type, exc_object, exc_tb = exc_info
268
return '(no exception)'
269
if isinstance(exc_object, (BzrError, BzrNewError)):
270
return str(exc_object)
400
"""Is the verbosity level negative?"""
401
return _verbosity_level < 0
405
"""Is the verbosity level positive?"""
406
return _verbosity_level > 0
409
def debug_memory(message='', short=True):
410
"""Write out a memory dump."""
411
if sys.platform == 'win32':
412
from bzrlib import win32utils
413
win32utils.debug_memory_win32api(message=message, short=short)
415
_debug_memory_proc(message=message, short=short)
418
_short_fields = ('VmPeak', 'VmSize', 'VmRSS')
420
def _debug_memory_proc(message='', short=True):
422
status_file = file('/proc/%s/status' % os.getpid(), 'rb')
426
status = status_file.read()
431
for line in status.splitlines():
273
tb = traceback.extract_tb(exc_tb)
274
msg = '%s: %s' % (exc_type, exc_object)
278
msg += '\n at %s line %d\n in %s' % (tb[-1][:3])
280
except Exception, formatting_exc:
281
# XXX: is this really better than just letting it run up?
282
return '(error formatting exception of type %s: %s)' \
283
% (exc_type, formatting_exc)
435
for field in _short_fields:
436
if line.startswith(field):
441
def report_exception(exc_info, err_file):
442
"""Report an exception to err_file (typically stderr) and to .bzr.log.
444
This will show either a full traceback or a short message as appropriate.
446
:return: The appropriate exit code for this error.
448
exc_type, exc_object, exc_tb = exc_info
449
# Log the full traceback to ~/.bzr.log
450
log_exception_quietly()
451
if (isinstance(exc_object, IOError)
452
and getattr(exc_object, 'errno', None) == errno.EPIPE):
453
err_file.write("bzr: broken pipe\n")
454
return errors.EXIT_ERROR
455
elif isinstance(exc_object, KeyboardInterrupt):
456
err_file.write("bzr: interrupted\n")
457
return errors.EXIT_ERROR
458
elif isinstance(exc_object, MemoryError):
459
err_file.write("bzr: out of memory\n")
460
return errors.EXIT_ERROR
461
elif isinstance(exc_object, ImportError) \
462
and str(exc_object).startswith("No module named "):
463
report_user_error(exc_info, err_file,
464
'You may need to install this Python library separately.')
465
return errors.EXIT_ERROR
466
elif not getattr(exc_object, 'internal_error', True):
467
report_user_error(exc_info, err_file)
468
return errors.EXIT_ERROR
469
elif isinstance(exc_object, (OSError, IOError)):
470
# Might be nice to catch all of these and show them as something more
471
# specific, but there are too many cases at the moment.
472
report_user_error(exc_info, err_file)
473
return errors.EXIT_ERROR
475
report_bug(exc_info, err_file)
476
return errors.EXIT_INTERNAL_ERROR
479
def print_exception(exc_info, err_file):
480
exc_type, exc_object, exc_tb = exc_info
481
err_file.write("bzr: ERROR: %s.%s: %s\n" % (
482
exc_type.__module__, exc_type.__name__, exc_object))
484
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
487
# TODO: Should these be specially encoding the output?
488
def report_user_error(exc_info, err_file, advice=None):
489
"""Report to err_file an error that's not an internal error.
491
These don't get a traceback unless -Derror was given.
493
:param exc_info: 3-tuple from sys.exc_info()
494
:param advice: Extra advice to the user to be printed following the
497
if 'error' in debug.debug_flags:
498
print_exception(exc_info, err_file)
500
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
502
err_file.write("%s\n" % (advice,))
505
def report_bug(exc_info, err_file):
506
"""Report an exception that probably indicates a bug in bzr"""
507
from bzrlib.crash import report_bug
508
report_bug(exc_info, err_file)
added
removed
bzrlib/trace.py
