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e6763f8516
SitemapXmlLogger assumes the first result logged is for the root of the website being mapped. Ensure results are logged before content is checked.
116 lines
4 KiB
Python
116 lines
4 KiB
Python
# Copyright (C) 2006-2014 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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URL checking functions.
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"""
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import copy
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import time
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from . import task
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from ..cache import urlqueue
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from .. import parser
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# Interval in which each check thread looks if it's stopped.
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QUEUE_POLL_INTERVALL_SECS = 1.0
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def check_urls(urlqueue, logger):
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"""Check URLs without threading."""
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while not urlqueue.empty():
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url_data = urlqueue.get()
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try:
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check_url(url_data, logger)
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finally:
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urlqueue.task_done(url_data)
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def check_url(url_data, logger):
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"""Check a single URL with logging."""
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if url_data.has_result:
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logger.log_url(url_data.to_wire())
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else:
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cache = url_data.aggregate.result_cache
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key = url_data.cache_url
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result = cache.get_result(key)
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if result is None:
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# check
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check_start = time.time()
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try:
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url_data.check()
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do_parse = url_data.check_content()
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url_data.checktime = time.time() - check_start
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# Add result to cache
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result = url_data.to_wire()
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cache.add_result(key, result)
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for alias in url_data.aliases:
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# redirect aliases
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cache.add_result(alias, result)
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logger.log_url(result)
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# parse content recursively
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# XXX this could add new warnings which should be cached.
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if do_parse:
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parser.parse_url(url_data)
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finally:
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# close/release possible open connection
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url_data.close_connection()
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else:
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# copy data from cache and adjust it
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result = copy.copy(result)
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result.parent_url = url_data.parent_url
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result.base_ref = url_data.base_ref or ""
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result.base_url = url_data.base_url or ""
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result.line = url_data.line
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result.column = url_data.column
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result.level = url_data.recursion_level
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result.name = url_data.name
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logger.log_url(result)
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class Checker(task.LoggedCheckedTask):
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"""URL check thread."""
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def __init__(self, urlqueue, logger, add_request_session):
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"""Store URL queue and logger."""
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super().__init__(logger)
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self.urlqueue = urlqueue
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self.origname = self.name
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self.add_request_session = add_request_session
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def run_checked(self):
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"""Check URLs in the queue."""
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# construct per-thread HTTP/S requests session
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self.add_request_session()
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while not self.stopped(0):
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self.check_url()
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def check_url(self):
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"""Try to get URL data from queue and check it."""
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try:
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url_data = self.urlqueue.get(timeout=QUEUE_POLL_INTERVALL_SECS)
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if url_data is not None:
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try:
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self.check_url_data(url_data)
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finally:
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self.urlqueue.task_done(url_data)
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self.name = self.origname
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except urlqueue.Empty:
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pass
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except Exception:
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self.internal_error()
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def check_url_data(self, url_data):
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"""Check one URL data instance."""
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self.name = "CheckThread-%s" % (url_data.url or "")
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check_url(url_data, self.logger)
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