def immediatelyCaching(url, success_func=None, fail_func=None):
"""
A smart method to start caching some identity and get results in callbacks.
"""
global _CachingTasks
if _CachingTasks.has_key(url):
return _CachingTasks[url]
def _getPageSuccess(src, url, res):
global _CachingTasks
_CachingTasks.pop(url)
if UpdateAfterChecking(url, src):
if success_func is not None:
success_func(url+'\n'+src)
res.callback(src)
else:
if fail_func is not None:
fail_func(url+'\n'+src)
res.errback(Exception(src))
def _getPageFail(x, url, res):
global _CachingTasks
_CachingTasks.pop(url)
if fail_func is not None:
fail_func(x)
res.errback(x)
result = Deferred()
d = dhnnet.getPageTwisted(url)
d.addCallback(_getPageSuccess, url, result)
d.addErrback(_getPageFail, url, result)
_CachingTasks[url] = result
return result
def pageRequestTwisted(url):
"""
Request an HTML page - this can be an user identity.
"""
d = dhnnet.getPageTwisted(url)
d.addCallback(getPageSuccess, url)
d.addErrback(getPageFail, url)
return d
