Better file access controls

[mpd-sima.git] / sima / utils / utils.py

diff --git a/sima/utils/utils.py b/sima/utils/utils.py
index 93bac25e78084dd94b92708fc7c83b5c91daefd8..ff0641057afdb57ce11c57131202f9d6378cbac0 100644 (file)
--- a/sima/utils/utils.py
+++ b/sima/utils/utils.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 #
-# Copyright (c) 2010, 2011, 2013 Jack Kaliko <kaliko@azylum.org>
+# Copyright (c) 2010, 2011, 2013, 2014 Jack Kaliko <kaliko@azylum.org>
 #
 #  This file is part of sima
 #
@@ -20,6 +20,7 @@
 #
 """generic tools and utilities for sima
 """
+# pylint: disable=C0111
 
 import traceback
 import sys
@@ -27,7 +28,7 @@ import sys
 from argparse import ArgumentError, Action
 from base64 import b64decode as push
 from codecs import getencoder
-from datetime import datetime, timedelta
+from datetime import datetime
 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
@@ -78,20 +79,9 @@ 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):
+    """SIGHUP raises this Exception"""
     pass
 
 # ArgParse Callbacks
@@ -158,7 +148,8 @@ class Wdir(FileAction):
         if not access(self._file, W_OK):
             self.parser.error('no write access to "{0}"'.format(self._file))
 
-class Throttle():
+class Throttle:
+    """throttle decorator"""
     def __init__(self, wait):
         self.wait = wait
         self.last_called = datetime.now()
@@ -172,18 +163,20 @@ class Throttle():
             return result
         return wrapper
 
-class Cache():
-    def __init__(self, elem, last=None):
-        self.elem = elem
-        self.requestdate = last
-        if not last:
-            self.requestdate = datetime.utcnow()
+# http client exceptions (for webservices)
+
+class WSError(Exception):
+    pass
+
+class WSNotFound(WSError):
+    pass
+
+class WSTimeout(WSError):
+    pass
 
-    def created(self):
-        return self.requestdate
+class WSHTTPError(WSError):
+    pass
 
-    def get(self):
-        return self.elem
 
 # VIM MODLINE
 # vim: ai ts=4 sw=4 sts=4 expandtab