/
__init__.py
executable file
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/
__init__.py
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import ConfigParser
from datetime import datetime, timedelta
import logging
import logging.handlers
import nntplib
from Queue import Queue
import threading
import time
import xml.etree.ElementTree
import sys
import os.path
from nzb import NZBBuilder
import cache
from cache import Article, Group
LOG = logging.getLogger('py-usedex')
LOG.setLevel(logging.DEBUG)
def setup_logger(logger):
formatter = logging.Formatter("%(levelname)s %(name)s (%(processName)s:%(threadName)s) %(filename)s:%(lineno)d %(message)s")
file_handler = logging.FileHandler('log.log')
file_handler.setFormatter(formatter)
logger.addHandler(file_handler)
stde_handler = logging.StreamHandler()
stde_handler.setFormatter(formatter)
logger.addHandler(stde_handler)
setup_logger(LOG)
class Worker(nntplib.NNTP):
def __init__(self, semaphore, *args, **kw):
self.semaphore = semaphore
self.semaphore.acquire()
nntplib.NNTP.__init__(self, *args, **kw)
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.quit()
def quit(self):
nntplib.NNTP.quit(self)
self.semaphore.release()
class Indexer:
def __init__(self, config_file='defaults.cfg'):
self.config = ConfigParser.SafeConfigParser()
self.config.readfp(open(config_file))
cache.database.init(self.config.get('indexer', 'cache_file'))
Group.create_table(True)
Article.create_table(True)
max_nntp = self.config.getint('indexer', 'max_connections')
self.nntp_semaphore = threading.BoundedSemaphore(max_nntp)
max_task = 5
self.task_queue = Queue()
self.task_runners = []
for i in xrange(max_task):
runner = threading.Thread(target=self.task_runner)
runner.daemon = True
self.task_runners.append(runner)
runner.start()
@property
def nntp_connection(self):
worker = Worker(
self.nntp_semaphore,
self.config.get('indexer', 'host'),
self.config.get('indexer', 'port'),
self.config.get('indexer', 'username'),
self.config.get('indexer', 'password'),
True)
#worker.set_debuglevel(1)
return worker
def update_groups(self):
self.add_task('update_groups', False)
def update_watched(self, count=1000):
for group in Group.watched():
LOG.debug(group)
self.get_last(group.name, count)
def update_group(self, group):
cache = None
last_read = cache.get_last_read(group)
last = 0
span = self.config.getint('indexer', 'xover_range')
with self.nntp_connection as nntp:
resp, count, first, last, group_name = nntp.group(group)
last_read = max(int(first), last_read)
last = int(last)
LOG.debug('update_group: %s %d %d', group, last, last_read)
if last > last_read:
for start in xrange(last_read, last, span):
end = min(last, start + span - 1)
self.add_task('fetch', group, start, end)
def get_last(self, group, number):
LOG.debug((group, number))
span = self.config.getint('indexer', 'xover_range')
with self.nntp_connection as nntp:
resp, count, first, last, group_name = nntp.group(group)
last = int(last)
start = max(int(first), last - number)
if start < last:
for point in xrange(start, last, span):
end = min(last, point + span - 1)
self.add_task('fetch', group, point, end)
def add_task(self, *args):
LOG.debug(args)
self.task_queue.put(args)
def task_runner(self):
try:
while True:
LOG.debug('%d tasks waiting' % self.task_queue.qsize())
task = self.task_queue.get()
LOG.debug(task)
if task[0] == 'fetch':
self._fetch_group_articles(*task[1:])
elif task[0] == 'update_groups':
self._build_group_list(*task[1:])
else:
LOG.error('Invalid action provided: %s', task)
self.task_queue.task_done()
except KeyboardInterrupt as err:
LOG.error(err)
return
def _build_group_list(self, all=False):
with self.nntp_connection as nntp:
resp, groups = nntp.list()
Group.add_from_nntplib(groups)
def _fetch_group_articles(self, group, start, end):
LOG.debug((group, start, end))
with self.nntp_connection as nntp:
nntp.group(group)
resp, articles = nntp.xover(str(start), str(end))
LOG.debug(len(articles))
if articles:
Article.add_from_nntplib(group, articles)
if __name__ == '__main__':
app = Indexer('defaults.cfg')
app.update_groups()
with app.cache_connection as cache:
cache.set_watched('alt.binaries.tv', True)
cache.set_watched('alt.binaries.hdtv', True)
app.update_watched()
while not app.task_queue.empty():
time.sleep(1)