mirror of
https://github.com/Hopiu/linkchecker.git
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114 lines
3.7 KiB
Python
114 lines
3.7 KiB
Python
# Copyright (C) 2000-2014 Bastian Kleineidam
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""
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A failures logger.
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"""
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import os
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from . import _Logger
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from .. import log, LOG_CHECK
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from ..configuration import get_user_data
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class FailuresLogger(_Logger):
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"""
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Updates a list of failed links. If a link already on the list
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is found to be working, it is removed. After n days
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we only have links on the list which failed within those n days.
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"""
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LoggerName = "failures"
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LoggerArgs = {
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"filename": os.path.join(get_user_data(), "failures"),
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}
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def __init__(self, **kwargs):
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"""Initialize with old failures data (if found)."""
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blacklist = os.path.join(get_user_data(), "blacklist")
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if os.path.isfile(blacklist):
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self.LoggerArgs["filename"] = blacklist
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log.warn(
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LOG_CHECK,
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_("%(blacklist)s file is deprecated please rename to failures")
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% {"blacklist": blacklist}
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)
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args = self.get_args(kwargs)
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super().__init__(**args)
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self.init_fileoutput(args)
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self.failures = {}
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if self.filename is not None and os.path.exists(self.filename):
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self.read_failures()
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def comment(self, s, **args):
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"""
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Write nothing.
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"""
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pass
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def log_url(self, url_data):
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"""
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Add invalid url to failures, delete valid url from failures.
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"""
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key = (url_data.parent_url, url_data.cache_url)
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key = repr(key)
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if key in self.failures:
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if url_data.valid:
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del self.failures[key]
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else:
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self.failures[key] += 1
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else:
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if not url_data.valid:
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self.failures[key] = 1
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def end_output(self, **kwargs):
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"""
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Write failures file.
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"""
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self.write_failures()
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def read_failures(self):
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"""
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Read a previously stored failures from file fd.
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"""
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with open(self.filename, encoding=self.output_encoding,
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errors=self.codec_errors) as fd:
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for line in fd:
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line = line.rstrip()
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if line.startswith('#') or not line:
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continue
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value, key = line.split(None, 1)
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key = key.strip('"')
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if not key.startswith('('):
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log.critical(
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LOG_CHECK,
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_("invalid line starting with '%(linestart)s' in %(failures)s")
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% {"linestart": line[:12], "failures": self.filename}
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)
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raise SystemExit(2)
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self.failures[key] = int(value)
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def write_failures(self):
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"""
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Write the failures file.
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"""
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oldmask = os.umask(0o077)
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for key, value in self.failures.items():
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self.write("%d %s%s" % (value, repr(key), os.linesep))
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self.close_fileoutput()
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# restore umask
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os.umask(oldmask)
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