def submit_update_transaction(self, ledger_config, **extra_params):
"""submit the update transaction to the ledger
"""
global transaction_dependencies
# there must be a previous state hash if this is
# an update
assert self.old_state_hash
update_submitter = Submitter(ledger_config['LedgerURL'],
key_str=self.channel_keys.txn_private)
b64_message_hash = crypto.byte_array_to_base64(self.message_hash)
b64_new_state_hash = crypto.byte_array_to_base64(self.new_state_hash)
b64_old_state_hash = crypto.byte_array_to_base64(self.old_state_hash)
# convert contract dependencies into transaction dependencies
# to ensure that the sawtooth validator does not attempt to
# re-order the transactions since it is unaware of the semantics
# of the contract dependencies
txn_dependencies = set()
if extra_params.get('transaction_dependency_list'):
txn_dependencies.update(
extra_params['transaction_dependency_list'])
txnid = transaction_dependencies.FindDependency(
ledger_config, self.contract_id, b64_old_state_hash)
if txnid:
txn_dependencies.add(txnid)
for dependency in self.dependencies:
contract_id = dependency['contract_id']
state_hash = dependency['state_hash']
txnid = transaction_dependencies.FindDependency(
ledger_config, contract_id, state_hash)
if txnid:
txn_dependencies.add(txnid)
if txn_dependencies:
extra_params['transaction_dependency_list'] = list(
txn_dependencies)
# now send off the transaction to the ledger
txnid = update_submitter.submit_ccl_update_from_data(
self.originator_keys.verifying_key, self.channel_keys.txn_public,
self.enclave_service.enclave_id, self.signature, self.contract_id,
b64_message_hash, b64_new_state_hash, b64_old_state_hash,
self.encrypted_state, self.dependencies, **extra_params)
if txnid:
transaction_dependencies.SaveDependency(self.contract_id,
b64_new_state_hash, txnid)
return txnid
def __submit_update_transaction__(response, ledger_config, **extra_params):
"""submit the update transaction to the ledger
"""
if response.status is False:
raise Exception('attempt to submit failed update transaction')
# there must be a previous state hash if this is
# an update
assert response.old_state_hash
update_submitter = Submitter(ledger_config['LedgerURL'],
key_str=response.channel_keys.txn_private)
b64_message_hash = crypto.byte_array_to_base64(response.message_hash)
b64_new_state_hash = crypto.byte_array_to_base64(response.new_state_hash)
b64_old_state_hash = crypto.byte_array_to_base64(response.old_state_hash)
# get transaction dependency list from the input
txn_dependencies = set()
if extra_params.get('transaction_dependency_list'):
txn_dependencies.update(extra_params['transaction_dependency_list'])
raw_state = response.raw_state
try:
raw_state = raw_state.decode()
except AttributeError:
pass
# now send off the transaction to the ledger
txnid = update_submitter.submit_ccl_update_from_data(
response.originator_keys.verifying_key,
response.channel_keys.txn_public, response.enclave_service.enclave_id,
response.signature, response.contract_id, b64_message_hash,
b64_new_state_hash, b64_old_state_hash, raw_state,
response.dependencies, **extra_params)
if txnid:
__lock_for_dependencies__.acquire()
__dependencies__.SaveDependency(response.contract_id,
b64_new_state_hash, txnid)
__lock_for_dependencies__.release()
return txnid