1
# This program is free software; you can redistribute it and/or modify
2
# it under the terms of the GNU General Public License as published by
3
# the Free Software Foundation; either version 2 of the License, or
4
# (at your option) any later version.
6
# This program is distributed in the hope that it will be useful,
7
# but WITHOUT ANY WARRANTY; without even the implied warranty of
8
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9
# GNU General Public License for more details.
11
# You should have received a copy of the GNU General Public License
12
# along with this program; if not, write to the Free Software
13
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16
"""Messages and logging for bazaar-ng
18
Messages are sent out through the Python logging library.
20
They can be sent to two places: to stderr, and to ~/.bzr.log.
22
~/.bzr.log gets all messages, and tracebacks of all uncaught
25
Normally stderr only gets messages of level INFO and higher, and gets
26
only a summary of exceptions, not the traceback.
30
# TODO: in debug mode, stderr should get full tracebacks and also
31
# debug messages. (Is this really needed?)
33
# TODO: When running the test suites, we should add an additional
34
# logger that sends messages into the test log file.
43
class QuietFormatter(logging.Formatter):
44
"""Formatter that supresses the details of errors.
46
This is used by default on stderr so as not to scare the user.
48
# At first I tried overriding formatException to suppress the
49
# exception details, but that has global effect: no loggers
50
# can get the exception details is we suppress them here.
52
def format(self, record):
54
if record.levelno >= logging.WARNING:
55
s += record.levelname + ': '
57
s += record.getMessage()
60
# give just a summary of the exception, not the whole thing
61
exinfo = traceback.extract_tb(record.exc_info[2])
62
# the format of this string matches one of the REs
64
s += (' at %s line %d, in %s()\n' % exinfo[-1][:3])
65
s += ' see ~/.bzr.log for debug information'
70
# configure default handler to stderr
72
_stderr_handler = logging.StreamHandler()
73
_stderr_handler.setFormatter(QuietFormatter())
75
if os.environ.get('BZR_DEBUG'):
76
_stderr_handler.setLevel(logging.DEBUG)
78
_stderr_handler.setLevel(logging.INFO)
80
logging.getLogger('').addHandler(_stderr_handler)
85
# configure convenient aliases for output routines
87
_bzr_logger = logging.getLogger('bzr')
88
_bzr_logger.setLevel(logging.DEBUG)
90
note = _bzr_logger.info
91
warning = _bzr_logger.warning
92
log_error = _bzr_logger.error
93
error = _bzr_logger.error
94
mutter = _bzr_logger.debug
95
debug = _bzr_logger.debug
100
# we do the rollover using this code, rather than the default from python
101
# logging, because we only want to rollover at program startup, not on each
102
# message. maybe that's not a good enough reason.
104
def _rollover_trace_maybe(trace_fname):
107
size = os.stat(trace_fname)[stat.ST_SIZE]
110
old_fname = trace_fname + '.old'
113
# must remove before rename on windows
119
# might fail if in use on windows
120
os.rename(trace_fname, old_fname)
128
def open_tracefile(argv=[], tracefilename='~/.bzr.log'):
129
# Messages are always written to here, so that we have some
130
# information if something goes wrong. In a future version this
131
# file will be removed on successful completion.
135
trace_fname = os.path.join(os.path.expanduser(tracefilename))
136
_rollover_trace_maybe(trace_fname)
138
# buffering=1 means line buffered
140
tf = codecs.open(trace_fname, 'at', 'utf8', buffering=1)
142
if os.fstat(tf.fileno())[stat.ST_SIZE] == 0:
143
t.write("\nthis is a debug log for diagnosing/reporting problems in bzr\n")
144
t.write("you can delete or truncate this file, or include sections in\n")
145
t.write("bug reports to bazaar-ng@lists.canonical.com\n\n")
147
_file_handler = logging.StreamHandler(tf)
148
fmt = r'[%(process)5d] %(asctime)s.%(msecs)03d %(levelname)s: %(message)s'
149
datefmt = r'%a %H:%M:%S'
150
_file_handler.setFormatter(logging.Formatter(fmt, datefmt))
151
_file_handler.setLevel(logging.DEBUG)
152
logging.getLogger('').addHandler(_file_handler)
156
debug('bzr %s invoked on python %s (%s)'
157
% (bzrlib.__version__,
158
'.'.join(map(str, sys.version_info)),
161
debug(' arguments: %r' % argv)
162
debug(' working dir: ' + os.getcwdu())
164
warning("failed to open trace file: %s" % (e))
168
def log_exception(msg=None):
169
"""Log the last exception into the trace file.
171
The exception string representation is used as the error
172
summary, unless msg is given.
181
_bzr_logger.exception(msg)