# Copyright BigchainDB GmbH and BigchainDB contributors # SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0) # Code is Apache-2.0 and docs are CC-BY-4.0 import pytest import codecs from bigchaindb.elections.election import Election from bigchaindb.tendermint_utils import public_key_to_base64 from bigchaindb.upsert_validator import ValidatorElection from bigchaindb.common.exceptions import AmountError from bigchaindb.common.crypto import generate_key_pair from bigchaindb.common.exceptions import ValidationError from bigchaindb.common.transaction_mode_types import BROADCAST_TX_COMMIT from bigchaindb.elections.vote import Vote from tests.utils import generate_block, gen_vote pytestmark = [pytest.mark.execute] @pytest.mark.bdb def test_upsert_validator_valid_election_vote(b_mock, valid_upsert_validator_election, ed25519_node_keys): b_mock.store_bulk_transactions([valid_upsert_validator_election]) input0 = valid_upsert_validator_election.to_inputs()[0] votes = valid_upsert_validator_election.outputs[0].amount public_key0 = input0.owners_before[0] key0 = ed25519_node_keys[public_key0] election_pub_key = ValidatorElection.to_public_key(valid_upsert_validator_election.id) vote = Vote.generate([input0], [([election_pub_key], votes)], election_id=valid_upsert_validator_election.id)\ .sign([key0.private_key]) assert vote.validate(b_mock) @pytest.mark.bdb def test_upsert_validator_valid_non_election_vote(b_mock, valid_upsert_validator_election, ed25519_node_keys): b_mock.store_bulk_transactions([valid_upsert_validator_election]) input0 = valid_upsert_validator_election.to_inputs()[0] votes = valid_upsert_validator_election.outputs[0].amount public_key0 = input0.owners_before[0] key0 = ed25519_node_keys[public_key0] election_pub_key = ValidatorElection.to_public_key(valid_upsert_validator_election.id) # Ensure that threshold conditions are now allowed with pytest.raises(ValidationError): Vote.generate([input0], [([election_pub_key, key0.public_key], votes)], election_id=valid_upsert_validator_election.id)\ .sign([key0.private_key]) @pytest.mark.bdb def test_upsert_validator_delegate_election_vote(b_mock, valid_upsert_validator_election, ed25519_node_keys): alice = generate_key_pair() b_mock.store_bulk_transactions([valid_upsert_validator_election]) input0 = valid_upsert_validator_election.to_inputs()[0] votes = valid_upsert_validator_election.outputs[0].amount public_key0 = input0.owners_before[0] key0 = ed25519_node_keys[public_key0] delegate_vote = Vote.generate([input0], [([alice.public_key], 3), ([key0.public_key], votes-3)], election_id=valid_upsert_validator_election.id)\ .sign([key0.private_key]) assert delegate_vote.validate(b_mock) b_mock.store_bulk_transactions([delegate_vote]) election_pub_key = ValidatorElection.to_public_key(valid_upsert_validator_election.id) alice_votes = delegate_vote.to_inputs()[0] alice_casted_vote = Vote.generate([alice_votes], [([election_pub_key], 3)], election_id=valid_upsert_validator_election.id)\ .sign([alice.private_key]) assert alice_casted_vote.validate(b_mock) key0_votes = delegate_vote.to_inputs()[1] key0_casted_vote = Vote.generate([key0_votes], [([election_pub_key], votes-3)], election_id=valid_upsert_validator_election.id)\ .sign([key0.private_key]) assert key0_casted_vote.validate(b_mock) @pytest.mark.bdb def test_upsert_validator_invalid_election_vote(b_mock, valid_upsert_validator_election, ed25519_node_keys): b_mock.store_bulk_transactions([valid_upsert_validator_election]) input0 = valid_upsert_validator_election.to_inputs()[0] votes = valid_upsert_validator_election.outputs[0].amount public_key0 = input0.owners_before[0] key0 = ed25519_node_keys[public_key0] election_pub_key = ValidatorElection.to_public_key(valid_upsert_validator_election.id) vote = Vote.generate([input0], [([election_pub_key], votes+1)], election_id=valid_upsert_validator_election.id)\ .sign([key0.private_key]) with pytest.raises(AmountError): assert vote.validate(b_mock) @pytest.mark.bdb def test_valid_election_votes_received(b_mock, valid_upsert_validator_election, ed25519_node_keys): alice = generate_key_pair() b_mock.store_bulk_transactions([valid_upsert_validator_election]) assert valid_upsert_validator_election.get_commited_votes(b_mock) == 0 input0 = valid_upsert_validator_election.to_inputs()[0] votes = valid_upsert_validator_election.outputs[0].amount public_key0 = input0.owners_before[0] key0 = ed25519_node_keys[public_key0] # delegate some votes to alice delegate_vote = Vote.generate([input0], [([alice.public_key], 4), ([key0.public_key], votes-4)], election_id=valid_upsert_validator_election.id)\ .sign([key0.private_key]) b_mock.store_bulk_transactions([delegate_vote]) assert valid_upsert_validator_election.get_commited_votes(b_mock) == 0 election_public_key = ValidatorElection.to_public_key(valid_upsert_validator_election.id) alice_votes = delegate_vote.to_inputs()[0] key0_votes = delegate_vote.to_inputs()[1] alice_casted_vote = Vote.generate([alice_votes], [([election_public_key], 2), ([alice.public_key], 2)], election_id=valid_upsert_validator_election.id)\ .sign([alice.private_key]) assert alice_casted_vote.validate(b_mock) b_mock.store_bulk_transactions([alice_casted_vote]) # Check if the delegated vote is count as valid vote assert valid_upsert_validator_election.get_commited_votes(b_mock) == 2 key0_casted_vote = Vote.generate([key0_votes], [([election_public_key], votes-4)], election_id=valid_upsert_validator_election.id)\ .sign([key0.private_key]) assert key0_casted_vote.validate(b_mock) b_mock.store_bulk_transactions([key0_casted_vote]) assert valid_upsert_validator_election.get_commited_votes(b_mock) == votes - 2 @pytest.mark.bdb def test_valid_election_conclude(b_mock, valid_upsert_validator_election, ed25519_node_keys): # Node 0: cast vote tx_vote0 = gen_vote(valid_upsert_validator_election, 0, ed25519_node_keys) # check if the vote is valid even before the election doesn't exist with pytest.raises(ValidationError): assert tx_vote0.validate(b_mock) # store election b_mock.store_bulk_transactions([valid_upsert_validator_election]) # cannot conclude election as not votes exist assert not valid_upsert_validator_election.has_concluded(b_mock) # validate vote assert tx_vote0.validate(b_mock) assert not valid_upsert_validator_election.has_concluded(b_mock, [tx_vote0]) b_mock.store_bulk_transactions([tx_vote0]) assert not valid_upsert_validator_election.has_concluded(b_mock) # Node 1: cast vote tx_vote1 = gen_vote(valid_upsert_validator_election, 1, ed25519_node_keys) # Node 2: cast vote tx_vote2 = gen_vote(valid_upsert_validator_election, 2, ed25519_node_keys) # Node 3: cast vote tx_vote3 = gen_vote(valid_upsert_validator_election, 3, ed25519_node_keys) assert tx_vote1.validate(b_mock) assert not valid_upsert_validator_election.has_concluded(b_mock, [tx_vote1]) # 2/3 is achieved in the same block so the election can be.has_concludedd assert valid_upsert_validator_election.has_concluded(b_mock, [tx_vote1, tx_vote2]) b_mock.store_bulk_transactions([tx_vote1]) assert not valid_upsert_validator_election.has_concluded(b_mock) assert tx_vote2.validate(b_mock) assert tx_vote3.validate(b_mock) # conclusion can be triggered my different votes in the same block assert valid_upsert_validator_election.has_concluded(b_mock, [tx_vote2]) assert valid_upsert_validator_election.has_concluded(b_mock, [tx_vote2, tx_vote3]) b_mock.store_bulk_transactions([tx_vote2]) # Once the blockchain records >2/3 of the votes the election is assumed to be.has_concludedd # so any invocation of `.has_concluded` for that election should return False assert not valid_upsert_validator_election.has_concluded(b_mock) # Vote is still valid but the election cannot be.has_concludedd as it it assmed that it has # been.has_concludedd before assert tx_vote3.validate(b_mock) assert not valid_upsert_validator_election.has_concluded(b_mock, [tx_vote3]) @pytest.mark.abci def test_upsert_validator(b, node_key, node_keys, ed25519_node_keys): if b.get_latest_block()['height'] == 0: generate_block(b) (node_pub, _) = list(node_keys.items())[0] validators = [{'public_key': {'type': 'ed25519-base64', 'value': node_pub}, 'voting_power': 10}] latest_block = b.get_latest_block() # reset the validator set b.store_validator_set(latest_block['height'], validators) generate_block(b) 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, None).sign([node_key.private_key]) code, message = b.write_transaction(election, BROADCAST_TX_COMMIT) assert code == 202 assert b.get_transaction(election.id) tx_vote = gen_vote(election, 0, ed25519_node_keys) assert tx_vote.validate(b) code, message = b.write_transaction(tx_vote, BROADCAST_TX_COMMIT) assert code == 202 resp = b.get_validators() validator_pub_keys = [] for v in resp: validator_pub_keys.append(v['public_key']['value']) assert (public_key64 in validator_pub_keys) new_validator_set = b.get_validators() validator_pub_keys = [] for v in new_validator_set: validator_pub_keys.append(v['public_key']['value']) assert (public_key64 in validator_pub_keys) @pytest.mark.bdb 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 election.has_concluded(b, [tx_vote0]) assert not election.has_concluded(b, [tx_vote0, tx_vote1]) assert election.has_concluded(b, [tx_vote0, tx_vote1, tx_vote2]) assert Election.process_block(b, 4, [tx_vote0]) == [] assert Election.process_block(b, 4, [tx_vote0, tx_vote1]) == [] update = Election.process_block(b, 4, [tx_vote0, tx_vote1, tx_vote2]) assert len(update) == 1 update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n') 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 = Election.process_block(b, 9, [tx_vote2]) assert len(update) == 1 update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n') 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 # ============================================================================ # Helper functions # ============================================================================ def reset_validator_set(b, node_keys, height): validators = [] for (node_pub, _) in node_keys.items(): validators.append({'public_key': {'type': 'ed25519-base64', 'value': node_pub}, 'voting_power': 10}) b.store_validator_set(height, validators)