48
49
# FIXME: Unfortunately it turns out that python's logging module
49
50
# is quite expensive, even when the message is not printed by any handlers.
50
51
# 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.
59
from bzrlib.errors import BzrError, BzrNewError
63
_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
70
class QuietFormatter(logging.Formatter):
71
"""Formatter that supresses the details of errors.
73
This is used by default on stderr so as not to scare the user.
75
# At first I tried overriding formatException to suppress the
76
# exception details, but that has global effect: no loggers
77
# can get the exception details is we suppress them here.
79
def format(self, record):
80
if record.levelno >= logging.WARNING:
81
s = 'bzr: ' + record.levelname + ': '
84
s += record.getMessage()
86
s += '\n' + format_exception_short(record.exc_info)
89
# configure convenient aliases for output routines
110
91
_bzr_logger = logging.getLogger('bzr')
113
93
def note(*args, **kwargs):
114
"""Output a note to the user.
116
Takes the same parameters as logging.info.
119
# FIXME note always emits utf-8, regardless of the terminal encoding
121
# FIXME: clearing the ui and then going through the abstract logging
122
# framework is whack; we should probably have a logging Handler that
123
# deals with terminal output if needed.
125
95
bzrlib.ui.ui_factory.clear_term()
126
96
_bzr_logger.info(*args, **kwargs)
129
98
def warning(*args, **kwargs):
131
100
bzrlib.ui.ui_factory.clear_term()
132
101
_bzr_logger.warning(*args, **kwargs)
135
@deprecated_function(deprecated_in((2, 1, 0)))
136
def info(*args, **kwargs):
137
"""Deprecated: use trace.note instead."""
138
note(*args, **kwargs)
141
@deprecated_function(deprecated_in((2, 1, 0)))
142
def log_error(*args, **kwargs):
143
"""Deprecated: use bzrlib.trace.show_error instead"""
144
_bzr_logger.error(*args, **kwargs)
147
@deprecated_function(deprecated_in((2, 1, 0)))
148
def error(*args, **kwargs):
149
"""Deprecated: use bzrlib.trace.show_error instead"""
150
_bzr_logger.error(*args, **kwargs)
153
def show_error(*args, **kwargs):
154
"""Show an error message to the user.
156
Don't use this for exceptions, use report_exception instead.
158
_bzr_logger.error(*args, **kwargs)
104
log_error = _bzr_logger.error
105
error = _bzr_logger.error
161
108
def mutter(fmt, *args):
162
109
if _trace_file is None:
164
# XXX: Don't check this every time; instead anyone who closes the file
165
# ought to deregister it. We can tolerate None.
166
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
111
if hasattr(_trace_file, 'closed') and _trace_file.closed:
169
if isinstance(fmt, unicode):
170
fmt = fmt.encode('utf8')
172
113
if len(args) > 0:
173
# It seems that if we do ascii % (unicode, ascii) we can
174
# get a unicode cannot encode ascii error, so make sure that "fmt"
175
# is a unicode string
178
if isinstance(arg, unicode):
179
arg = arg.encode('utf8')
180
real_args.append(arg)
181
out = fmt % tuple(real_args)
185
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
186
out = timestamp + out + '\n'
187
118
_trace_file.write(out)
188
# there's no explicit flushing; the file is typically line buffered.
191
def mutter_callsite(stacklevel, fmt, *args):
192
"""Perform a mutter of fmt and args, logging the call trace.
194
:param stacklevel: The number of frames to show. None will show all
196
:param fmt: The format string to pass to mutter.
197
:param args: A list of substitution variables.
200
if stacklevel is None:
203
limit = stacklevel + 1
204
traceback.print_stack(limit=limit, file=outf)
205
formatted_lines = outf.getvalue().splitlines()
206
formatted_stack = '\n'.join(formatted_lines[:-2])
207
mutter(fmt + "\nCalled from:\n%s", *(args + (formatted_stack,)))
210
122
def _rollover_trace_maybe(trace_fname):
214
126
if size <= 4 << 20:
216
128
old_fname = trace_fname + '.old'
217
osutils.rename(trace_fname, old_fname)
129
from osutils import rename
130
rename(trace_fname, old_fname)
222
def _get_bzr_log_filename():
223
bzr_log = os.environ.get('BZR_LOG')
226
home = os.environ.get('BZR_HOME')
228
if sys.platform == 'win32':
229
from bzrlib import win32utils
230
home = win32utils.get_home_location()
232
home = os.path.expanduser('~')
233
return os.path.join(home, '.bzr.log')
237
"""Open the .bzr.log trace file.
239
If the log is more than a particular length, the old file is renamed to
240
.bzr.log.old and a new file is started. Otherwise, we append to the
243
This sets the global _bzr_log_filename.
245
global _bzr_log_filename
247
def _open_or_create_log_file(filename):
248
"""Open existing log file, or create with ownership and permissions
250
It inherits the ownership and permissions (masked by umask) from
251
the containing directory to cope better with being run under sudo
252
with $HOME still set to the user's homedir.
254
flags = os.O_WRONLY | os.O_APPEND | osutils.O_TEXT
257
fd = os.open(filename, flags)
260
if e.errno != errno.ENOENT:
263
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
265
if e.errno != errno.EEXIST:
268
osutils.copy_ownership_from_path(filename)
270
return os.fdopen(fd, 'at', 0) # unbuffered
273
_bzr_log_filename = _get_bzr_log_filename()
274
_rollover_trace_maybe(_bzr_log_filename)
135
def open_tracefile(tracefilename='~/.bzr.log'):
136
# Messages are always written to here, so that we have some
137
# information if something goes wrong. In a future version this
138
# file will be removed on successful completion.
139
global _file_handler, _bzr_log_file
142
trace_fname = os.path.join(os.path.expanduser(tracefilename))
143
_rollover_trace_maybe(trace_fname)
276
bzr_log_file = _open_or_create_log_file(_bzr_log_filename)
277
bzr_log_file.write('\n')
278
if bzr_log_file.tell() <= 2:
279
bzr_log_file.write("this is a debug log for diagnosing/reporting problems in bzr\n")
280
bzr_log_file.write("you can delete or truncate this file, or include sections in\n")
281
bzr_log_file.write("bug reports to https://bugs.launchpad.net/bzr/+filebug\n\n")
285
except EnvironmentError, e:
286
# If we are failing to open the log, then most likely logging has not
287
# been set up yet. So we just write to stderr rather than using
288
# 'warning()'. If we using warning(), users get the unhelpful 'no
289
# handlers registered for "bzr"' when something goes wrong on the
290
# server. (bug #503886)
291
sys.stderr.write("failed to open trace file: %s\n" % (e,))
292
# TODO: What should happen if we fail to open the trace file? Maybe the
293
# objects should be pointed at /dev/null or the equivalent? Currently
294
# returns None which will cause failures later.
298
def enable_default_logging():
299
"""Configure default logging: messages to stderr and debug to .bzr.log
301
This should only be called once per process.
303
Non-command-line programs embedding bzrlib do not need to call this. They
304
can instead either pass a file to _push_log_file, or act directly on
305
logging.getLogger("bzr").
307
Output can be redirected away by calling _push_log_file.
309
# Do this before we open the log file, so we prevent
310
# get_terminal_encoding() from mutter()ing multiple times
311
term_encoding = osutils.get_terminal_encoding()
312
start_time = osutils.format_local_date(_bzr_log_start_time,
314
# create encoded wrapper around stderr
315
bzr_log_file = _open_bzr_log()
316
if bzr_log_file is not None:
317
bzr_log_file.write(start_time.encode('utf-8') + '\n')
318
push_log_file(bzr_log_file,
319
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
320
r'%Y-%m-%d %H:%M:%S')
321
# after hooking output into bzr_log, we also need to attach a stderr
322
# handler, writing only at level info and with encoding
323
writer_factory = codecs.getwriter(term_encoding)
324
encoded_stderr = writer_factory(sys.stderr, errors='replace')
325
stderr_handler = logging.StreamHandler(encoded_stderr)
326
stderr_handler.setLevel(logging.INFO)
327
logging.getLogger('bzr').addHandler(stderr_handler)
330
def push_log_file(to_file, log_format=None, date_format=None):
331
"""Intercept log and trace messages and send them to a file.
333
:param to_file: A file-like object to which messages will be sent.
335
:returns: A memento that should be passed to _pop_log_file to restore the
336
previously active logging.
340
new_handler = logging.StreamHandler(to_file)
341
new_handler.setLevel(logging.DEBUG)
342
if log_format is None:
343
log_format = '%(levelname)8s %(message)s'
344
new_handler.setFormatter(logging.Formatter(log_format, date_format))
345
# save and remove any existing log handlers
346
bzr_logger = logging.getLogger('bzr')
347
old_handlers = bzr_logger.handlers[:]
348
del bzr_logger.handlers[:]
349
# set that as the default logger
350
bzr_logger.addHandler(new_handler)
351
bzr_logger.setLevel(logging.DEBUG)
352
# TODO: check if any changes are needed to the root logger
354
# TODO: also probably need to save and restore the level on bzr_logger.
355
# but maybe we can avoid setting the logger level altogether, and just set
356
# the level on the handler?
358
# save the old trace file
359
old_trace_file = _trace_file
360
# send traces to the new one
361
_trace_file = to_file
362
result = new_handler, _trace_file
363
return ('log_memento', old_handlers, new_handler, old_trace_file, to_file)
366
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
367
"""Undo changes to logging/tracing done by _push_log_file.
369
This flushes, but does not close the trace file.
371
Takes the memento returned from _push_log_file."""
373
_trace_file = old_trace_file
374
bzr_logger = logging.getLogger('bzr')
375
bzr_logger.removeHandler(new_handler)
376
# must be closed, otherwise logging will try to close it atexit, and the
377
# file will likely already be closed underneath.
379
bzr_logger.handlers = old_handlers
380
new_trace_file.flush()
146
tf = codecs.open(trace_fname, 'at', 'utf8', buffering=LINE_BUFFERED)
149
tf.write("\nthis is a debug log for diagnosing/reporting problems in bzr\n")
150
tf.write("you can delete or truncate this file, or include sections in\n")
151
tf.write("bug reports to bazaar-ng@lists.canonical.com\n\n")
152
_file_handler = logging.StreamHandler(tf)
153
fmt = r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s'
154
datefmt = r'%a %H:%M:%S'
155
_file_handler.setFormatter(logging.Formatter(fmt, datefmt))
156
_file_handler.setLevel(logging.DEBUG)
157
logging.getLogger('').addHandler(_file_handler)
159
warning("failed to open trace file: %s" % (e))
162
def log_startup(argv):
163
debug('\n\nbzr %s invoked on python %s (%s)',
165
'.'.join(map(str, sys.version_info)),
167
debug(' arguments: %r', argv)
168
debug(' working dir: %r', os.getcwdu())
383
171
def log_exception_quietly():
384
172
"""Log the last exception to the trace file only.
386
Used for exceptions that occur internally and that may be
387
interesting to developers but not to users. For example,
174
Used for exceptions that occur internally and that may be
175
interesting to developers but not to users. For example,
388
176
errors loading plugins.
390
mutter(traceback.format_exc())
393
def set_verbosity_level(level):
394
"""Set the verbosity level.
396
:param level: -ve for quiet, 0 for normal, +ve for verbose
398
global _verbosity_level
399
_verbosity_level = level
400
_update_logging_level(level < 0)
401
ui.ui_factory.be_quiet(level < 0)
404
def get_verbosity_level():
405
"""Get the verbosity level.
407
See set_verbosity_level() for values.
409
return _verbosity_level
179
debug(traceback.format_exc())
182
def enable_default_logging():
183
"""Configure default logging to stderr and .bzr.log"""
184
# FIXME: if this is run twice, things get confused
185
global _stderr_handler, _file_handler, _trace_file, _bzr_log_file
186
_stderr_handler = logging.StreamHandler()
187
_stderr_handler.setFormatter(QuietFormatter())
188
logging.getLogger('').addHandler(_stderr_handler)
189
_stderr_handler.setLevel(logging.INFO)
190
if not _file_handler:
192
_trace_file = _bzr_log_file
194
_file_handler.setLevel(logging.DEBUG)
195
_bzr_logger.setLevel(logging.DEBUG)
412
199
def be_quiet(quiet=True):
414
set_verbosity_level(-1)
416
set_verbosity_level(0)
419
def _update_logging_level(quiet=True):
420
"""Hide INFO messages if quiet."""
422
_bzr_logger.setLevel(logging.WARNING)
424
_bzr_logger.setLevel(logging.INFO)
200
global _stderr_handler, _stderr_quiet
202
_stderr_quiet = quiet
204
_stderr_handler.setLevel(logging.WARNING)
206
_stderr_handler.setLevel(logging.INFO)
428
"""Is the verbosity level negative?"""
429
return _verbosity_level < 0
433
"""Is the verbosity level positive?"""
434
return _verbosity_level > 0
437
def debug_memory(message='', short=True):
438
"""Write out a memory dump."""
439
if sys.platform == 'win32':
440
from bzrlib import win32utils
441
win32utils.debug_memory_win32api(message=message, short=short)
443
_debug_memory_proc(message=message, short=short)
446
_short_fields = ('VmPeak', 'VmSize', 'VmRSS')
448
def _debug_memory_proc(message='', short=True):
450
status_file = file('/proc/%s/status' % os.getpid(), 'rb')
454
status = status_file.read()
459
for line in status.splitlines():
463
for field in _short_fields:
464
if line.startswith(field):
469
def report_exception(exc_info, err_file):
470
"""Report an exception to err_file (typically stderr) and to .bzr.log.
472
This will show either a full traceback or a short message as appropriate.
474
:return: The appropriate exit code for this error.
476
# Log the full traceback to ~/.bzr.log
477
log_exception_quietly()
478
if 'error' in debug.debug_flags:
479
print_exception(exc_info, err_file)
480
return errors.EXIT_ERROR
481
exc_type, exc_object, exc_tb = exc_info
482
if (isinstance(exc_object, IOError)
483
and getattr(exc_object, 'errno', None) == errno.EPIPE):
484
err_file.write("bzr: broken pipe\n")
485
return errors.EXIT_ERROR
486
elif 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
return errors.EXIT_ERROR
492
elif isinstance(exc_object, ImportError) \
493
and str(exc_object).startswith("No module named "):
494
report_user_error(exc_info, err_file,
495
'You may need to install this Python library separately.')
496
return errors.EXIT_ERROR
497
elif not getattr(exc_object, 'internal_error', True):
498
report_user_error(exc_info, err_file)
499
return errors.EXIT_ERROR
500
elif isinstance(exc_object, (OSError, IOError)):
501
# Might be nice to catch all of these and show them as something more
502
# specific, but there are too many cases at the moment.
503
report_user_error(exc_info, err_file)
504
return errors.EXIT_ERROR
214
def disable_default_logging():
215
"""Turn off default log handlers.
217
This is intended to be used by the test framework, which doesn't
218
want leakage from the code-under-test into the main logs.
221
l = logging.getLogger('')
222
l.removeHandler(_stderr_handler)
224
l.removeHandler(_file_handler)
228
def enable_test_log(to_file):
229
"""Redirect logging to a temporary file for a test
231
returns an opaque reference that should be passed to disable_test_log
232
after the test completes.
234
disable_default_logging()
237
hdlr = logging.StreamHandler(to_file)
238
hdlr.setLevel(logging.DEBUG)
239
hdlr.setFormatter(logging.Formatter('%(levelname)8s %(message)s'))
240
_bzr_logger.addHandler(hdlr)
241
_bzr_logger.setLevel(logging.DEBUG)
242
result = hdlr, _trace_file, _trace_depth
243
_trace_file = to_file
248
def disable_test_log((test_log_hdlr, old_trace_file, old_trace_depth)):
249
_bzr_logger.removeHandler(test_log_hdlr)
250
test_log_hdlr.close()
253
_trace_file = old_trace_file
254
_trace_depth = old_trace_depth
256
enable_default_logging()
259
def report_unhandled_exception(exc_info, err_file):
260
"""Report to stderr than an exception hit the top level.
262
This is used only for exceptions that indicate a bug of some kind in bzr.
264
if isinstance(exc_info[1], (BzrError, BzrNewError)):
265
report_user_error(exc_info, err_file)
506
267
report_bug(exc_info, err_file)
507
return errors.EXIT_INTERNAL_ERROR
510
def print_exception(exc_info, err_file):
511
exc_type, exc_object, exc_tb = exc_info
512
err_file.write("bzr: ERROR: %s.%s: %s\n" % (
513
exc_type.__module__, exc_type.__name__, exc_object))
515
traceback.print_exception(exc_type, exc_object, exc_tb, file=err_file)
518
270
# TODO: Should these be specially encoding the output?
519
def report_user_error(exc_info, err_file, advice=None):
520
"""Report to err_file an error that's not an internal error.
522
These don't get a traceback unless -Derror was given.
524
:param exc_info: 3-tuple from sys.exc_info()
525
:param advice: Extra advice to the user to be printed following the
528
err_file.write("bzr: ERROR: %s\n" % (exc_info[1],))
530
err_file.write("%s\n" % (advice,))
271
def report_user_error(exc_info, err_file):
272
exc_type, exc_object, exc_tb = exc_info
273
print >>err_file, "bzr:",
275
print >>err_file, str(exc_object)
276
except Exception, formatting_exc:
277
# XXX: is this really better than just letting it run up?
279
'(error formatting exception of type %s: %s)' \
280
% (exc_type, formatting_exc)
533
283
def report_bug(exc_info, err_file):
534
"""Report an exception that probably indicates a bug in bzr"""
535
from bzrlib.crash import report_bug
536
report_bug(exc_info, err_file)
539
def _flush_stdout_stderr():
540
# installed into an atexit hook by bzrlib.initialize()
285
exc_type, exc_object, exc_tb = exc_info
286
print >>err_file, "bzr: unhandled error: %s: %s" % (exc_type, exc_object)
288
traceback.print_exception(*exc_info)
290
print >>err_file, "** please send this report to bazaar-ng@lists.ubuntu.com"
293
# TODO: Is this still used?
294
def format_exception_short(exc_info):
295
"""Make a short string form of an exception.
297
This is used for display to stderr. It specially handles exception
298
classes without useful string methods.
300
The result has no trailing newline, but does span a few lines and includes
301
the function and line.
303
:param exc_info: typically an exception from sys.exc_info()
305
exc_type, exc_object, exc_tb = exc_info
546
if e.errno in [errno.EINVAL, errno.EPIPE]:
308
return '(no exception)'
309
if isinstance(exc_object, (BzrError, BzrNewError)):
310
return str(exc_object)
553
# run from atexit hook
313
tb = traceback.extract_tb(exc_tb)
314
msg = '%s: %s' % (exc_type, exc_object)
318
msg += '\n at %s line %d\n in %s' % (tb[-1][:3])
320
except Exception, formatting_exc:
321
# XXX: is this really better than just letting it run up?
322
return '(error formatting exception of type %s: %s)' \
323
% (exc_type, formatting_exc)
added
removed
bzrlib/trace.py
