def put_visited(self, task, changed):
"""Put a task for a visited directory.
If the directory is visited for the first time the `changed` argument
will be ignored. If the directory was previously visited the `changed`
argument should be `True` if the directory changed, `False` otherwise.
This information will be used to estimate the change frequency. In
both cases the `TaskQueue` will schedule a task to revisit the
directory.
"""
self._mutex.acquire()
try:
site_id = task.site_id
site_info = self._sites_info[site_id]
task.report_visit(changed)
if task.revisit_count == 0:
# First visit. Set default values.
task.revisit_wait = site_info['default_revisit_wait']
logging.info('Setting revisit frequency for "%s" to %s'
% (task.url, secs_to_readable(task.revisit_wait)))
else:
if task.revisit_count >= self._revisits:
minimum = site_info['min_revisit_wait']
maximum = site_info['max_revisit_wait']
estimated = self._estimate_revisit_wait(task)
task.revisit_wait = min(maximum, max(minimum, estimated))
task.reset_change_count()
logging.info('Changing revisit frequency for "%s" to %s'
% (task.url, secs_to_readable(task.revisit_wait)))
else:
logging.info('Missing %s visits to "%s" before estimating change frequency.'
% (self._revisits - task.revisit_count,task.url))
self._put(task, task.revisit_wait)
finally:
self._mutex.release()
def test_secs_to_readable(self):
values = {
1:
'1 second',
60:
'1 minute',
60 * 60:
'1 hour',
60 * 60 * 24:
'1 day',
2:
'2 seconds',
60 * 2:
'2 minutes',
60 * 60 * 2:
'2 hours',
60 * 60 * 24 * 2:
'2 days',
60 + 1:
'1 minute and 1 second',
60 * 60 + 60 + 1:
'1 hour, 1 minute and 1 second',
60 * 60 * 24 + 60 * 60 + 60 + 1:
'1 day, 1 hour, 1 minute and 1 second',
}
for secs, readable in values.iteritems():
self.assertEquals(secs_to_readable(secs), readable)
def put_visited(self, task, changed):
"""Put a task for a visited directory.
If the directory is visited for the first time the `changed` argument
will be ignored. If the directory was previously visited the `changed`
argument should be `True` if the directory changed, `False` otherwise.
This information will be used to estimate the change frequency. In
both cases the `TaskQueue` will schedule a task to revisit the
directory.
"""
self._mutex.acquire()
try:
site_id = task.site_id
site_info = self._sites_info[site_id]
task.report_visit(changed)
if task.revisit_count == 0:
# First visit. Set default values.
task.revisit_wait = site_info['default_revisit_wait']
logging.info('Setting revisit frequency for "%s" to %s' %
(task.url, secs_to_readable(task.revisit_wait)))
else:
if task.revisit_count >= self._revisits:
minimum = site_info['min_revisit_wait']
maximum = site_info['max_revisit_wait']
estimated = self._estimate_revisit_wait(task)
task.revisit_wait = min(maximum, max(minimum, estimated))
task.reset_change_count()
logging.info(
'Changing revisit frequency for "%s" to %s' %
(task.url, secs_to_readable(task.revisit_wait)))
else:
logging.info(
'Missing %s visits to "%s" before estimating change frequency.'
% (self._revisits - task.revisit_count, task.url))
self._put(task, task.revisit_wait)
finally:
self._mutex.release()
def test_secs_to_readable(self):
values = {
1: '1 second',
60: '1 minute',
60 * 60: '1 hour',
60 * 60 * 24: '1 day',
2: '2 seconds',
60 * 2: '2 minutes',
60 * 60 * 2: '2 hours',
60 * 60 * 24 * 2: '2 days',
60 + 1: '1 minute and 1 second',
60 * 60 + 60 + 1: '1 hour, 1 minute and 1 second',
60 * 60 * 24 + 60 * 60 + 60 + 1:
'1 day, 1 hour, 1 minute and 1 second',
}
for secs, readable in values.iteritems():
self.assertEquals(secs_to_readable(secs), readable)
