def end_block(self, height):
"""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."""
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']
validator_updates = self.bigchaindb.get_validator_update()
validator_updates = [encode_validator(v) for v in validator_updates]
# set sync status to true
self.bigchaindb.delete_validator_update()
# NOTE: interface for `ResponseEndBlock` has be changed in the latest
# version of py-abci i.e. the validator updates should be return
# as follows:
# ResponseEndBlock(validator_updates=validator_updates)
return ResponseEndBlock(diffs=validator_updates)
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.
"""
self.abort_if_abci_chain_is_not_synced()
chain_shift = 0 if self.chain is None else self.chain['height']
height = request_end_block.height + chain_shift
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']
validator_update = Election.process_block(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_update)
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']
# TODO: calculate if an election has concluded
# NOTE: ensure the local validator set is updated
# validator_updates = self.bigchaindb.get_validator_update()
# validator_updates = [encode_validator(v) for v in validator_updates]
validator_updates = []
# 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 end_block(self, height):
"""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."""
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']
validator_updates = self.bigchaindb.get_validator_update()
validator_updates = [encode_validator(v) for v in validator_updates]
# set sync status to true
self.bigchaindb.delete_validator_update()
# 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())
# NOTE: interface for `ResponseEndBlock` has be changed in the latest
# version of py-abci i.e. the validator updates should be return
# as follows:
# ResponseEndBlock(validator_updates=validator_updates)
return ResponseEndBlock(validator_updates=validator_updates)
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 end_block(self, height):
"""Called at the end of processing. If this is a stateful application
you can use the height from here to record the last_block_height"""
self.db.set_block_height(increment=True)
if self.new_block_txs: # Change app hash only if there any new txns
self.db.set_block_app_hash(utils.get_merkle_root(self.new_block_txs))
return ResponseEndBlock()
def end_block(self, height):
"""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."""
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']
return ResponseEndBlock()
def end_block(self, height):
"""Called at the end of processing. If this is a stateful application
you can use the height from here to record the last_block_height"""
self.last_block_height = height
return ResponseEndBlock()
def end_block(self, req):
return ResponseEndBlock(validator_updates=self.validators)