14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
"""Messages and logging for bazaar-ng.
17
"""Messages and logging.
19
19
Messages are supplied by callers as a string-formatting template, plus values
20
20
to be inserted into it. The actual %-formatting is deferred to the log
34
34
Output to stderr depends on the mode chosen by the user. By default, messages
35
35
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 quiet mode, only warnings and
37
above are shown. In debug mode, stderr gets debug messages too.
36
list of files processed by add and commit. In debug mode, stderr gets debug messages too.
39
38
Errors that terminate an operation are generally passed back as exceptions;
40
39
others may be just emitted as messages.
109
107
def note(*args, **kwargs):
108
"""Output a note to the user.
110
Takes the same parameters as logging.info.
110
114
# FIXME note always emits utf-8, regardless of the terminal encoding
112
116
# FIXME: clearing the ui and then going through the abstract logging
113
117
# framework is whack; we should probably have a logging Handler that
114
118
# deals with terminal output if needed.
116
bzrlib.ui.ui_factory.clear_term()
119
ui.ui_factory.clear_term()
117
120
_bzr_logger.info(*args, **kwargs)
120
123
def warning(*args, **kwargs):
122
bzrlib.ui.ui_factory.clear_term()
124
ui.ui_factory.clear_term()
123
125
_bzr_logger.warning(*args, **kwargs)
126
# configure convenient aliases for output routines
128
# TODO: deprecate them, have one name for each.
130
log_error = _bzr_logger.error
131
error = _bzr_logger.error
134
_last_mutter_flush_time = None
128
def show_error(*args, **kwargs):
129
"""Show an error message to the user.
131
Don't use this for exceptions, use report_exception instead.
133
_bzr_logger.error(*args, **kwargs)
136
136
def mutter(fmt, *args):
137
global _last_mutter_flush_time
138
137
if _trace_file is None:
139
# XXX: Don't check this every time; instead anyone who closes the file
140
# ought to deregister it. We can tolerate None.
140
141
if (getattr(_trace_file, 'closed', None) is not None) and _trace_file.closed:
159
160
timestamp = '%0.3f ' % (now - _bzr_log_start_time,)
160
161
out = timestamp + out + '\n'
161
162
_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
163
# there's no explicit flushing; the file is typically line buffered.
173
166
def mutter_callsite(stacklevel, fmt, *args):
225
218
This sets the global _bzr_log_filename.
227
220
global _bzr_log_filename
222
def _open_or_create_log_file(filename):
223
"""Open existing log file, or create with ownership and permissions
225
It inherits the ownership and permissions (masked by umask) from
226
the containing directory to cope better with being run under sudo
227
with $HOME still set to the user's homedir.
229
flags = os.O_WRONLY | os.O_APPEND | osutils.O_TEXT
232
fd = os.open(filename, flags)
235
if e.errno != errno.ENOENT:
238
fd = os.open(filename, flags | os.O_CREAT | os.O_EXCL, 0666)
240
if e.errno != errno.EEXIST:
243
osutils.copy_ownership_from_path(filename)
245
return os.fdopen(fd, 'at', 0) # unbuffered
228
248
_bzr_log_filename = _get_bzr_log_filename()
229
249
_rollover_trace_maybe(_bzr_log_filename)
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
251
bzr_log_file = _open_or_create_log_file(_bzr_log_filename)
233
252
bzr_log_file.write('\n')
234
253
if bzr_log_file.tell() <= 2:
235
254
bzr_log_file.write("this is a debug log for diagnosing/reporting problems in bzr\n")
236
255
bzr_log_file.write("you can delete or truncate this file, or include sections in\n")
237
256
bzr_log_file.write("bug reports to https://bugs.launchpad.net/bzr/+filebug\n\n")
238
258
return bzr_log_file
240
warning("failed to open trace file: %s" % (e))
260
except EnvironmentError, e:
261
# If we are failing to open the log, then most likely logging has not
262
# been set up yet. So we just write to stderr rather than using
263
# 'warning()'. If we using warning(), users get the unhelpful 'no
264
# handlers registered for "bzr"' when something goes wrong on the
265
# server. (bug #503886)
266
sys.stderr.write("failed to open trace file: %s\n" % (e,))
241
267
# TODO: What should happen if we fail to open the trace file? Maybe the
242
268
# objects should be pointed at /dev/null or the equivalent? Currently
243
269
# returns None which will cause failures later.
254
280
logging.getLogger("bzr").
256
282
Output can be redirected away by calling _push_log_file.
284
:return: A memento from push_log_file for restoring the log state.
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
286
start_time = osutils.format_local_date(_bzr_log_start_time,
262
287
timezone='local')
263
288
# create encoded wrapper around stderr
264
289
bzr_log_file = _open_bzr_log()
265
290
if bzr_log_file is not None:
266
291
bzr_log_file.write(start_time.encode('utf-8') + '\n')
267
push_log_file(bzr_log_file,
292
memento = push_log_file(bzr_log_file,
268
293
r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s',
269
294
r'%Y-%m-%d %H:%M:%S')
270
295
# after hooking output into bzr_log, we also need to attach a stderr
271
296
# handler, writing only at level info and with encoding
297
term_encoding = osutils.get_terminal_encoding()
272
298
writer_factory = codecs.getwriter(term_encoding)
273
299
encoded_stderr = writer_factory(sys.stderr, errors='replace')
274
300
stderr_handler = logging.StreamHandler(encoded_stderr)
275
301
stderr_handler.setLevel(logging.INFO)
276
302
logging.getLogger('bzr').addHandler(stderr_handler)
279
306
def push_log_file(to_file, log_format=None, date_format=None):
315
342
def pop_log_file((magic, old_handlers, new_handler, old_trace_file, new_trace_file)):
316
343
"""Undo changes to logging/tracing done by _push_log_file.
318
This flushes, but does not close the trace file.
345
This flushes, but does not close the trace file (so that anything that was
320
348
Takes the memento returned from _push_log_file."""
321
349
global _trace_file
322
350
_trace_file = old_trace_file
323
351
bzr_logger = logging.getLogger('bzr')
324
352
bzr_logger.removeHandler(new_handler)
325
# must be closed, otherwise logging will try to close it atexit, and the
353
# must be closed, otherwise logging will try to close it at exit, and the
326
354
# file will likely already be closed underneath.
327
355
new_handler.close()
328
356
bzr_logger.handlers = old_handlers
329
new_trace_file.flush()
357
if new_trace_file is not None:
358
new_trace_file.flush()
332
361
def log_exception_quietly():
446
def _dump_memory_usage(err_file):
449
fd, name = tempfile.mkstemp(prefix="bzr_memdump", suffix=".json")
450
dump_file = os.fdopen(fd, 'w')
451
from meliae import scanner
452
scanner.dump_gc_objects(dump_file)
453
err_file.write("Memory dumped to %s\n" % name)
455
err_file.write("Dumping memory requires meliae module.\n")
456
log_exception_quietly()
458
err_file.write("Exception while dumping memory.\n")
459
log_exception_quietly()
461
if dump_file is not None:
467
def _qualified_exception_name(eclass, unqualified_bzrlib_errors=False):
468
"""Give name of error class including module for non-builtin exceptions
470
If `unqualified_bzrlib_errors` is True, errors specific to bzrlib will
471
also omit the module prefix.
473
class_name = eclass.__name__
474
module_name = eclass.__module__
475
if module_name in ("exceptions", "__main__") or (
476
unqualified_bzrlib_errors and module_name == "bzrlib.errors"):
478
return "%s.%s" % (module_name, class_name)
418
481
def report_exception(exc_info, err_file):
419
482
"""Report an exception to err_file (typically stderr) and to .bzr.log.
423
486
:return: The appropriate exit code for this error.
425
exc_type, exc_object, exc_tb = exc_info
426
488
# Log the full traceback to ~/.bzr.log
427
489
log_exception_quietly()
490
if 'error' in debug.debug_flags:
491
print_exception(exc_info, err_file)
492
return errors.EXIT_ERROR
493
exc_type, exc_object, exc_tb = exc_info
428
494
if (isinstance(exc_object, IOError)
429
495
and getattr(exc_object, 'errno', None) == errno.EPIPE):
430
496
err_file.write("bzr: broken pipe\n")
432
498
elif isinstance(exc_object, KeyboardInterrupt):
433
499
err_file.write("bzr: interrupted\n")
434
500
return errors.EXIT_ERROR
501
elif isinstance(exc_object, MemoryError):
502
err_file.write("bzr: out of memory\n")
503
if 'mem_dump' in debug.debug_flags:
504
_dump_memory_usage(err_file)
506
err_file.write("Use -Dmem_dump to dump memory to a file.\n")
507
return errors.EXIT_ERROR
435
508
elif isinstance(exc_object, ImportError) \
436
509
and str(exc_object).startswith("No module named "):
437
510
report_user_error(exc_info, err_file,
440
513
elif not getattr(exc_object, 'internal_error', True):
441
514
report_user_error(exc_info, err_file)
442
515
return errors.EXIT_ERROR
443
elif isinstance(exc_object, (OSError, IOError)):
516
elif isinstance(exc_object, (OSError, IOError)) or (
517
# GZ 2010-05-20: Like (exc_type is pywintypes.error) but avoid import
518
exc_type.__name__ == "error" and exc_type.__module__ == "pywintypes"):
444
519
# Might be nice to catch all of these and show them as something more
445
520
# specific, but there are too many cases at the moment.
446
521
report_user_error(exc_info, err_file)
479
551
def report_bug(exc_info, err_file):
480
552
"""Report an exception that probably indicates a bug in bzr"""
481
print_exception(exc_info, err_file)
483
err_file.write('bzr %s on python %s (%s)\n' % \
485
bzrlib._format_version_tuple(sys.version_info),
487
err_file.write('arguments: %r\n' % sys.argv)
489
'encoding: %r, fsenc: %r, lang: %r\n' % (
490
osutils.get_user_encoding(), sys.getfilesystemencoding(),
491
os.environ.get('LANG')))
492
err_file.write("plugins:\n")
493
for name, a_plugin in sorted(plugin.plugins().items()):
494
err_file.write(" %-20s %s [%s]\n" %
495
(name, a_plugin.path(), a_plugin.__version__))
498
*** Bazaar has encountered an internal error.
499
Please report a bug at https://bugs.launchpad.net/bzr/+filebug
500
including this traceback, and a description of what you
501
were doing when the error occurred.
553
from bzrlib.crash import report_bug
554
report_bug(exc_info, err_file)
557
def _flush_stdout_stderr():
558
# called from the bzrlib library finalizer returned by bzrlib.initialize()
562
except ValueError, e:
563
# On Windows, I get ValueError calling stdout.flush() on a closed
568
if e.errno in [errno.EINVAL, errno.EPIPE]:
575
# called from the bzrlib library finalizer returned by bzrlib.initialize()
581
class Config(object):
582
"""Configuration of message tracing in bzrlib.
584
This implements the context manager protocol and should manage any global
585
variables still used. The default config used is DefaultConfig, but
586
embedded uses of bzrlib may wish to use a custom manager.
590
return self # This is bound to the 'as' clause in a with statement.
592
def __exit__(self, exc_type, exc_val, exc_tb):
593
return False # propogate exceptions.
596
class DefaultConfig(Config):
597
"""A default configuration for tracing of messages in bzrlib.
599
This implements the context manager protocol.
603
self._original_filename = _bzr_log_filename
604
self._original_state = enable_default_logging()
605
return self # This is bound to the 'as' clause in a with statement.
607
def __exit__(self, exc_type, exc_val, exc_tb):
608
pop_log_file(self._original_state)
609
global _bzr_log_filename
610
_bzr_log_filename = self._original_filename
611
return False # propogate exceptions.
added
removed
bzrlib/trace.py
