isso/isso/core.py
Martin Zimmermann 221b782157 refactor configuration parsing
* use a single default configuration, share/isso.conf
* try to use config.new in some tests which are decoupled

A few tests now depend on `isso.dist` to show that they (or the used
objects) have too much dependencies and need to be rewritten.
2014-06-23 18:03:46 +02:00

131 lines
2.7 KiB
Python

# -*- encoding: utf-8 -*-
from __future__ import print_function
import time
import logging
import threading
import multiprocessing
try:
import uwsgi
except ImportError:
uwsgi = None
from isso.compat import PY2K
if PY2K:
import thread
else:
import _thread as thread
from werkzeug.contrib.cache import NullCache, SimpleCache
logger = logging.getLogger("isso")
class Cache:
"""Wrapper around werkzeug's cache class, to make it compatible to
uWSGI's cache framework.
"""
def __init__(self, cache):
self.cache = cache
def get(self, cache, key):
return self.cache.get(key)
def set(self, cache, key, value):
return self.cache.set(key, value)
def delete(self, cache, key):
return self.cache.delete(key)
class Mixin(object):
def __init__(self, conf):
self.lock = threading.Lock()
self.cache = Cache(NullCache())
def notify(self, subject, body, retries=5):
pass
def threaded(func):
"""
Decorator to execute each :param func: call in a separate thread.
"""
def dec(self, *args, **kwargs):
thread.start_new_thread(func, (self, ) + args, kwargs)
return dec
class ThreadedMixin(Mixin):
def __init__(self, conf):
super(ThreadedMixin, self).__init__(conf)
if conf.getboolean("moderation", "enabled"):
self.purge(conf.getint("moderation", "purge-after"))
self.cache = Cache(SimpleCache(threshold=1024, default_timeout=3600))
@threaded
def purge(self, delta):
while True:
with self.lock:
self.db.comments.purge(delta)
time.sleep(delta)
class ProcessMixin(ThreadedMixin):
def __init__(self, conf):
super(ProcessMixin, self).__init__(conf)
self.lock = multiprocessing.Lock()
class uWSGICache(object):
"""Uses uWSGI Caching Framework. INI configuration:
.. code-block:: ini
cache2 = name=hash,items=1024,blocksize=32
"""
@classmethod
def get(self, cache, key):
return uwsgi.cache_get(key, cache)
@classmethod
def set(self, cache, key, value):
uwsgi.cache_set(key, value, 3600, cache)
@classmethod
def delete(self, cache, key):
uwsgi.cache_del(key, cache)
class uWSGIMixin(Mixin):
def __init__(self, conf):
super(uWSGIMixin, self).__init__(conf)
self.lock = multiprocessing.Lock()
self.cache = uWSGICache
timedelta = conf.getint("moderation", "purge-after")
purge = lambda signum: self.db.comments.purge(timedelta)
uwsgi.register_signal(1, "", purge)
uwsgi.add_timer(1, timedelta)
# run purge once
purge(1)