Exemple #1
0
    def setUp(self):
        initialise_database('test_database_file')

        self.private_key = SigningKey.generate()
        self.public_key = PublicKey.from_signing_key(self.private_key)
        # self.uuids = [uuid4() for _ in range(3)]

        self.operations = [[
            Operation(OperationRev(),'http://example0.com/v0/', [self.public_key]),
            Operation(OperationRev(),'http://example1.com/v0/', [self.public_key])
        ]]

        for op in self.operations[0]:
            sign_object(self.public_key, self.private_key, op)

        self.operations.append([
            Operation(OperationRev.from_obj(self.operations[0][0]), 'http://example0.com/v1/', [self.public_key]),
            Operation(OperationRev.from_obj(self.operations[0][1]), 'http://example1.com/v1/', [self.public_key]),
            Operation(OperationRev(), 'http://example2.com/v0/', [self.public_key])
        ])

        for op in self.operations[1]:
            sign_object(self.public_key, self.private_key, op)

        self.operations.append([
            Operation(OperationRev.from_obj(self.operations[1][0]),'http://example0.com/v2/', [self.public_key]),
            Operation(OperationRev.from_obj(self.operations[1][1]), 'http://example1.com/v2/', [self.public_key])
        ])

        for op in self.operations[2]:
            sign_object(self.public_key, self.private_key, op)

        self.operations.append([
            Operation(OperationRev.from_obj(self.operations[1][1]), 'http://alternative1.com/', [self.public_key]),
            Operation(OperationRev.from_obj(self.operations[1][2]), 'http://alternative2.com/', [self.public_key])
        ])

        for op in self.operations[3]:
            sign_object(self.public_key, self.private_key, op)

        timestamp = int(time.time()) - 100

        self.blocks = [Block.from_operations_list(BlockRev(), timestamp, self.operations[0])]
        self.blocks[0].mine()
        sign_object(self.public_key, self.private_key, self.blocks[0])
        self.blocks.append(
            Block.from_operations_list(BlockRev.from_obj(self.blocks[0]), timestamp + 20, self.operations[1]))
        self.blocks[1].mine()
        sign_object(self.public_key, self.private_key, self.blocks[1])
        self.blocks.append(
            Block.from_operations_list(BlockRev.from_obj(self.blocks[1]), timestamp + 40, self.operations[2]))
        self.blocks[2].mine()
        sign_object(self.public_key, self.private_key, self.blocks[2])
        self.blocks.append(
            Block.from_operations_list(BlockRev.from_obj(self.blocks[1]), timestamp + 60, self.operations[3]))
        self.blocks[3].mine()
        sign_object(self.public_key, self.private_key, self.blocks[3])
Exemple #2
0
    def test_4_wrong_previous_block(self):
        self.blocks[0].previous_block_rev = BlockRev.from_id(double_sha(b'something'))
        self.blocks[0].mine()
        sign_object(self.public_key, self.private_key, self.blocks[0])

        with self.assertRaisesRegex(Block.ChainError, "previous_block_rev does not exist"):
            self.blocks[0].verify()
Exemple #3
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    def add_blocks(self, ops):
        """
        create blocks:
        blocks[0] -> blocks[1] -> blocks[2] -> blocks[3] -> blocks[5]
                                           \-> blocks[4] -> blocks[6]
        """
        start_time = 42
        blocks = [Block.from_operations_list(BlockRev(), start_time, [ops[0], ops[1]])]
        blocks[0].mine()
        sign_object(self.public_keys[0], self.private_keys[0], blocks[0])
        blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[0]), start_time + 10, [ops[2], ops[6]]))
        blocks[1].mine()
        sign_object(self.public_keys[0], self.private_keys[0], blocks[1])
        blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[1]), start_time + 20, [ops[3], ops[5]]))
        blocks[2].mine()
        sign_object(self.public_keys[0], self.private_keys[0], blocks[2])
        blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[2]), start_time + 30, [ops[8], ops[4]]))
        blocks[3].mine()
        sign_object(self.public_keys[0], self.private_keys[0], blocks[3])
        blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[2]), start_time + 40, [ops[4], ops[7]]))
        blocks[4].mine()
        sign_object(self.public_keys[0], self.private_keys[0], blocks[4])
        blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[3]), start_time + 50, [ops[7], ops[9]]))
        blocks[5].mine()
        sign_object(self.public_keys[0], self.private_keys[0], blocks[5])
        blocks.append(Block.from_operations_list(BlockRev.from_obj(blocks[4]), start_time + 60, [ops[8], ops[9]]))
        blocks[6].mine()
        sign_object(self.public_keys[0], self.private_keys[0], blocks[6])

        return blocks
Exemple #4
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        def mint_block():

            if len(ops) >= MIN_OPS_IN_BLOCK:
                print("Preparing block with {} operations.".format(len(ops)))

                blockchain = pmpi.core.get_blockchain()
                rev = BlockRev.from_id(blockchain.head) if blockchain.max_depth > 0 else BlockRev()
                block = Block.from_operations_list(rev, int(time.time()), ops)
                block.difficulty = 10  # TODO difficulty!
                block.mine()
                self.user.sign_object(block)
                block.verify()

                print("Block minted. Sending.")

                self.transport.write(b'BL' + block.raw_with_operations())
            else:
                print("There are not enough operations to mint a block")
                for op in ops:
                    asyncio.ensure_future(operation_queue.put(op))
Exemple #5
0
def test():
    try:
        os.remove('test_database_file')
    except OSError:
        pass
    initialise_database('test_database_file')

    obj_private_key = SigningKey.generate()
    obj_public_key = PublicKey.from_signing_key(obj_private_key)
    obj_uuids = [uuid4() for _ in range(3)]

    obj_operations = [[
        Operation(OperationRev(), 'http://example0.com/v0/', [obj_public_key]),
        Operation(OperationRev(), 'http://example1.com/v0/', [obj_public_key])
    ]]

    for op in obj_operations[0]:
        sign_object(obj_public_key, obj_private_key, op)

    obj_operations.append([
        Operation(OperationRev.from_obj(obj_operations[0][0]), 'http://example0.com/v1/', [obj_public_key]),
        Operation(OperationRev.from_obj(obj_operations[0][1]), 'http://example1.com/v1/', [obj_public_key]),
        Operation(OperationRev(), 'http://example2.com/v0/', [obj_public_key])
    ])

    for op in obj_operations[1]:
        sign_object(obj_public_key, obj_private_key, op)

    obj_operations.append([
        Operation(OperationRev.from_obj(obj_operations[1][0]), 'http://example0.com/v2/', [obj_public_key]),
        Operation(OperationRev.from_obj(obj_operations[1][1]), 'http://example1.com/v2/', [obj_public_key])
    ])

    for op in obj_operations[2]:
        sign_object(obj_public_key, obj_private_key, op)

    obj_operations.append([
        Operation(OperationRev.from_obj(obj_operations[1][1]), 'http://alternative1.com/', [obj_public_key]),
        Operation(OperationRev.from_obj(obj_operations[1][2]), 'http://alternative2.com/', [obj_public_key])
    ])

    for op in obj_operations[3]:
        sign_object(obj_public_key, obj_private_key, op)

    timestamp = int(time.time()) - 100

    obj_blocks = [Block.from_operations_list(BlockRev(), timestamp, obj_operations[0])]
    obj_blocks[0].mine()
    sign_object(obj_public_key, obj_private_key, obj_blocks[0])
    obj_blocks.append(
        Block.from_operations_list(BlockRev.from_obj(obj_blocks[0]), timestamp + 20, obj_operations[1]))
    obj_blocks[1].mine()
    sign_object(obj_public_key, obj_private_key, obj_blocks[1])
    obj_blocks.append(
        Block.from_operations_list(BlockRev.from_obj(obj_blocks[1]), timestamp + 40, obj_operations[2]))
    obj_blocks[2].mine()
    sign_object(obj_public_key, obj_private_key, obj_blocks[2])
    obj_blocks.append(
        Block.from_operations_list(BlockRev.from_obj(obj_blocks[1]), timestamp + 60, obj_operations[3]))
    obj_blocks[3].mine()
    sign_object(obj_public_key, obj_private_key, obj_blocks[3])

    for block in obj_blocks:
        block.put()

    for block in obj_blocks:
        new_block = Block.get(block.id)
        assert new_block.id == block.id

    for block in obj_blocks[:2]:
        try:
            block.remove()
            raise AssertionError
        except Block.ChainOperationBlockedError:
            pass

    assert sorted(Block.get_ids_list()) == sorted([block.id for block in obj_blocks])

    obj_blocks[2].remove()

    for block in obj_blocks[:2]:
        try:
            block.remove()
            raise AssertionError
        except Block.ChainOperationBlockedError:
            pass

    obj_blocks[3].remove()

    try:
        obj_blocks[0].remove()
        raise AssertionError
    except Block.ChainOperationBlockedError:
        pass

    obj_blocks[1].remove()
    obj_blocks[0].remove()

    for block in obj_blocks:
        try:
            block.remove()
            raise AssertionError
        except Block.DoesNotExist:
            pass

    assert Block.get_ids_list() == []

    close_database()
    os.remove('test_database_file')