def end_block(self, request_end_block): """Calculate block hash using transaction ids and previous block hash to be stored in the next block. Args: height (int): new height of the chain. """ height = request_end_block.height self.new_height = height block_txn_hash = calculate_hash(self.block_txn_ids) block = self.bigchaindb.get_latest_block() if self.block_txn_ids: self.block_txn_hash = calculate_hash([block['app_hash'], block_txn_hash]) else: self.block_txn_hash = block['app_hash'] # Check if the current block concluded any validator elections and # update the locally tracked validator set validator_updates = ValidatorElection.get_validator_update(self.bigchaindb, self.new_height, self.block_transactions) # Store pre-commit state to recover in case there is a crash # during `commit` pre_commit_state = PreCommitState(commit_id=PRE_COMMIT_ID, height=self.new_height, transactions=self.block_txn_ids) logger.debug('Updating PreCommitState: %s', self.new_height) self.bigchaindb.store_pre_commit_state(pre_commit_state._asdict()) return ResponseEndBlock(validator_updates=validator_updates)
def test_get_validator_update(b, node_keys, node_key, ed25519_node_keys): reset_validator_set(b, node_keys, 1) power = 1 public_key = '9B3119650DF82B9A5D8A12E38953EA47475C09F0C48A4E6A0ECE182944B24403' public_key64 = public_key_to_base64(public_key) new_validator = { 'public_key': public_key, 'node_id': 'some_node_id', 'power': power } voters = ValidatorElection.recipients(b) election = ValidatorElection.generate([node_key.public_key], voters, new_validator).sign( [node_key.private_key]) # store election b.store_bulk_transactions([election]) tx_vote0 = gen_vote(election, 0, ed25519_node_keys) tx_vote1 = gen_vote(election, 1, ed25519_node_keys) tx_vote2 = gen_vote(election, 2, ed25519_node_keys) assert not ValidatorElection.has_concluded(b, election.id, [tx_vote0]) assert not ValidatorElection.has_concluded(b, election.id, [tx_vote0, tx_vote1]) assert ValidatorElection.has_concluded(b, election.id, [tx_vote0, tx_vote1, tx_vote2]) assert ValidatorElection.get_validator_update(b, 4, [tx_vote0]) == [] assert ValidatorElection.get_validator_update(b, 4, [tx_vote0, tx_vote1]) == [] update = ValidatorElection.get_validator_update( b, 4, [tx_vote0, tx_vote1, tx_vote2]) update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n') assert len(update) == 1 assert update_public_key == public_key64 b.store_bulk_transactions([tx_vote0, tx_vote1]) update = ValidatorElection.get_validator_update(b, 4, [tx_vote2]) print('update', update) update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n') assert len(update) == 1 assert update_public_key == public_key64
def test_get_validator_update(b, node_keys, node_key, ed25519_node_keys): reset_validator_set(b, node_keys, 1) power = 1 public_key = '9B3119650DF82B9A5D8A12E38953EA47475C09F0C48A4E6A0ECE182944B24403' public_key64 = public_key_to_base64(public_key) new_validator = { 'public_key': { 'value': public_key, 'type': 'ed25519-base16' }, 'node_id': 'some_node_id', 'power': power } voters = ValidatorElection.recipients(b) election = ValidatorElection.generate([node_key.public_key], voters, new_validator).sign( [node_key.private_key]) # store election b.store_bulk_transactions([election]) tx_vote0 = gen_vote(election, 0, ed25519_node_keys) tx_vote1 = gen_vote(election, 1, ed25519_node_keys) tx_vote2 = gen_vote(election, 2, ed25519_node_keys) assert not ValidatorElection.has_concluded(b, election.id, [tx_vote0]) assert not ValidatorElection.has_concluded(b, election.id, [tx_vote0, tx_vote1]) assert ValidatorElection.has_concluded(b, election.id, [tx_vote0, tx_vote1, tx_vote2]) assert ValidatorElection.get_validator_update(b, 4, [tx_vote0]) == [] assert ValidatorElection.get_validator_update(b, 4, [tx_vote0, tx_vote1]) == [] update = ValidatorElection.get_validator_update( b, 4, [tx_vote0, tx_vote1, tx_vote2]) update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n') assert len(update) == 1 assert update_public_key == public_key64 b.store_bulk_transactions([tx_vote0, tx_vote1]) update = ValidatorElection.get_validator_update(b, 4, [tx_vote2]) update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n') assert len(update) == 1 assert update_public_key == public_key64 # remove validator power = 0 new_validator = { 'public_key': { 'value': public_key, 'type': 'ed25519-base16' }, 'node_id': 'some_node_id', 'power': power } voters = ValidatorElection.recipients(b) election = ValidatorElection.generate([node_key.public_key], voters, new_validator).sign( [node_key.private_key]) # store election b.store_bulk_transactions([election]) tx_vote0 = gen_vote(election, 0, ed25519_node_keys) tx_vote1 = gen_vote(election, 1, ed25519_node_keys) tx_vote2 = gen_vote(election, 2, ed25519_node_keys) b.store_bulk_transactions([tx_vote0, tx_vote1]) update = ValidatorElection.get_validator_update(b, 9, [tx_vote2]) update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n') assert len(update) == 1 assert update_public_key == public_key64 # assert that the public key is not a part of the current validator set for v in b.get_validators(10): assert not v['public_key']['value'] == public_key64