def validate_link(url,whitelist=False):
if url:
url=sanitize_url(url)
if url:
if whitelist and domain(url) not in DOMAIN_WHITELIST:
print "Domain %s not in whitelist." % domain(url)
return False
try:
lbu = LinksByUrl._byID(LinksByUrl._key_from_url(url))
except tdb_cassandra.NotFound:
return url
link_id36s = lbu._values()
links = Link._byID36(link_id36s, data=True, return_dict=False)
links = [l for l in links if not l._deleted]
if len(links)==0:
return url
print "Link %s exists..." % url
return False
