X-Git-Url: http://git.kaliko.me/?a=blobdiff_plain;f=sima%2Futils%2Futils.py;h=93bac25e78084dd94b92708fc7c83b5c91daefd8;hb=67bcabe7439d4830cb3ae8c61fa269eb9232ac59;hp=c3bc6c0175db30f36325c941d41d63d378c5f36e;hpb=cae35b4090eaeb8eec24c7ea77ec2311f3fc0608;p=mpd-sima.git

diff --git a/sima/utils/utils.py b/sima/utils/utils.py
index c3bc6c0..93bac25 100644
--- a/sima/utils/utils.py
+++ b/sima/utils/utils.py
@@ -27,9 +27,10 @@ import sys
 from argparse import ArgumentError, Action
 from base64 import b64decode as push
 from codecs import getencoder
-from datetime import datetime
+from datetime import datetime, timedelta
 from os import environ, access, getcwd, W_OK, R_OK
 from os.path import dirname, isabs, join, normpath, exists, isdir, isfile
+from time import sleep
 
 
 def getws(dic):
@@ -77,6 +78,19 @@ def exception_log():
     log.info('Quiting now!')
     sys.exit(1)
 
+def purge_cache(obj, age=4):
+    now = datetime.utcnow()
+    if now.hour == obj.timestamp.hour:
+        return
+    obj.timestamp = datetime.utcnow()
+    cache = obj.cache
+    delta = timedelta(hours=age)
+    for url in list(cache.keys()):
+        timestamp = cache.get(url).created()
+        if now - timestamp > delta:
+            cache.pop(url)
+
+
 class SigHup(Exception):
     pass