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#!/usr/bin/python
import Alchemist
import time
import urllib
import gzip
def getBox(box_cfg):
return URLBlackBox(box_cfg)
class URLBlackBox(Alchemist.BlackBox):
def __init__ (self, box_cfg):
self.status = 0
self.me = self.__class__.__module__
self._errNo = 0
self._errStr = None
self.readable = 1
self.writable = 0
Alchemist.validateBoxCfg(box_cfg)
try:
self.url = box_cfg.getChildByName("url").getValue()
except:
raise ValueError, "URLBlackBox box_cfgs must contain a 'url' element"
def read (self):
try:
ufile = urllib.urlopen(self.url)
gfile = gzip.GzipFile(fileobj = ufile)
xml_str = gfile.read()
gfile.close()
context = Alchemist.Context(xml = xml_str)
return context
except:
return None
def version(self):
return time.time() - time.timezone