doc.py 文件源码

def get_merkle_chains(self, root_key_name_yesterday):
        k=ndb.Key('DocRoot', root_key_name_yesterday)
        doc_root=k.get()

        if (doc_root.doc_root_hash!=''):
            raise Exception('ERROR! doc_root_hash already used!')

        my_list=DocLine.get_doclines_from_root(root_key_name_yesterday)

        if len(my_list)==0:
            raise Exception('WARNING. No documents to proof.')

        my_list2=map(lambda x:x.content_hash,my_list)

        tree = MerkleTree(my_list2, True)
        tree.build()

        doc_root_hash=binascii.hexlify(tree.root.val)

        for i in range(len(my_list2)):
            merkle_chain=tree.get_chain(i)
            merkle_chain2=map(lambda x: (binascii.hexlify(x[0]),x[1]), merkle_chain)

            my_list[i].merkle_chain=db.Text(str(merkle_chain2), encoding="latin-1")
            my_list[i].doc_root=doc_root_hash
            my_list[i].put()

        doc_root=k.get()

        doc_root.doc_root_hash=doc_root_hash
        doc_root.date_broadcast=test.utcnow()
        doc_root.nodes=db.Text(str(map(lambda x: binascii.hexlify(x.val), tree.leaves)), encoding='latin-1')
        doc_root.put()
        return doc_root_hash