Optional persistent cache for last.fm

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

diff --git a/sima/utils/utils.py b/sima/utils/utils.py
index d0edcd4ab6f8ca671143df6fbfe8e0e97ac44cc0..ff0641057afdb57ce11c57131202f9d6378cbac0 100644 (file)
--- a/sima/utils/utils.py
+++ b/sima/utils/utils.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 #
 # -*- 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
 #
 #
 #  This file is part of sima
 #


@@ -20,6 +20,7 @@
 #
 """generic tools and utilities for sima
 """
 #
 """generic tools and utilities for sima
 """

+# pylint: disable=C0111

 
 import traceback
 import sys
 
 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 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
 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)
 
     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):
 
 class SigHup(Exception):

+    """SIGHUP raises this Exception"""

     pass
 
 # ArgParse Callbacks
     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))
 
         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()
     def __init__(self, wait):
         self.wait = wait
         self.last_called = datetime.now()


@@ -172,20 +163,6 @@ class Throttle():
             return result
         return wrapper
 
             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()
-
-    def created(self):
-        return self.requestdate
-
-    def get(self):
-        return self.elem
-
-

 # http client exceptions (for webservices)
 
 class WSError(Exception):
 # http client exceptions (for webservices)
 
 class WSError(Exception):