def apply(self, transaction, context):
transaction_payload = TransactionPayload()
transaction_payload.ParseFromString(transaction.payload)
state_processor = self.get_state_processor()
try:
data_pb = state_processor[transaction_payload.method][PB_CLASS]()
data_pb.ParseFromString(transaction_payload.data)
processor = state_processor[transaction_payload.method][PROCESSOR]
updated_state = processor(context,
transaction.header.signer_public_key,
data_pb)
except KeyError:
raise InvalidTransaction(
'Unknown value {} for the pub_key operation type.'.format(
int(transaction_payload.method)))
except ParseError:
raise InvalidTransaction('Cannot decode transaction payload')
addresses = context.set_state(
{k: v.SerializeToString()
for k, v in updated_state.items()})
if len(addresses) < len(updated_state):
raise InternalError('Failed to update all of states. Updated: {}. '
'Full list of states to update: {}.'.format(
addresses, updated_state.keys()))
event_name = state_processor[transaction_payload.method].get(
EMIT_EVENT, None)
if event_name:
add_event(
context, event_name,
get_event_attributes(updated_state, transaction.signature))
def apply(self, transaction, context):
transaction_payload = TransactionPayload()
transaction_payload.ParseFromString(transaction.payload)
state_processor = self.get_state_processor()
try:
data_pb = state_processor[transaction_payload.method]['pb_class']()
data_pb.ParseFromString(transaction_payload.data)
processor = state_processor[
transaction_payload.method]['processor']
updated_state = processor(context,
transaction.header.signer_public_key,
data_pb)
except KeyError:
raise InvalidTransaction(
'Unknown value {} for the pub_key operation type.'.format(
int(transaction_payload.method)))
except ParseError:
raise InvalidTransaction('Cannot decode transaction payload')
print(self._family_name)
addresses = context.set_state(
{k: v.SerializeToString()
for k, v in updated_state.items()})
if len(addresses) < len(updated_state):
raise InternalError('Failed to update all of states. Updated: {}. '
'Full list of states to update: {}.'.format(
addresses, updated_state.keys()))
async def send_raw_transaction(request):
try:
data = request.params['data']
except KeyError:
raise RpcInvalidParamsError(message='Missed data')
try:
transaction = base64.b64decode(data.encode('utf-8'))
except Exception:
raise RpcGenericServerDefinedError(
error_code=-32050,
message='Decode payload of tranasaction failed'
)
try:
tr_pb = Transaction()
tr_pb.ParseFromString(transaction)
except DecodeError:
raise RpcGenericServerDefinedError(
error_code=-32050,
message='Failed to parse transaction proto'
)
try:
tr_head_pb = TransactionHeader()
tr_head_pb.ParseFromString(tr_pb.header)
except DecodeError:
raise RpcGenericServerDefinedError(
error_code=-32050,
message='Failed to parse transaction head proto'
)
try:
tr_payload_pb = TransactionPayload()
tr_payload_pb.ParseFromString(tr_pb.payload)
except DecodeError:
raise RpcGenericServerDefinedError(
error_code=-32050,
message='Failed to parse transaction payload proto'
)
prefix, public_key = tr_head_pb.signer_public_key[:2], \
tr_head_pb.signer_public_key[2:]
if prefix in ('02', '03') and len(public_key) != 64:
raise RpcGenericServerDefinedError(
error_code=-32050,
message='Signer public key format is not valid'
)
try:
handler = TP_HANDLERS[tr_head_pb.family_name]
except KeyError:
raise RpcGenericServerDefinedError(
error_code=-32050,
message='Validation handler not set for this method'
)
validator = _get_proto_validator(handler, tr_payload_pb)
if validator and not validator.validate():
logger.debug('Form "send_raw_transaction" validator errors: '
f'{validator.errors}')
raise RpcGenericServerDefinedError(
error_code=-32050,
message=f'Invalid "{validator.get_pb_class().__name__}" '
'structure'
)
client = PubKeyClient()
response = await client.send_raw_transaction(tr_pb)
return response['data']
def apply(self, transaction, context):
"""
Accept transaction request that passed from validator.
Validator accept not transaction request, but transaction, that have a bit another structure.
The flow is: transaction -> RPC -> validator -> (transaction request) handler's apply method.
Arguments:
transaction (sawtooth_sdk.protobuf.processor_pb2.TpProcessRequest): transaction request.
context (sawtooth_sdk.processor.context.Context): context to store and retrieve address data.
References:
- https://sawtooth.hyperledger.org/docs/core/releases/1.0/sdks/python_sdk/processor.html?
highlight=apply#processor.handler.TransactionHandler.apply
- https://sawtooth.hyperledger.org/docs/core/releases/1.0/_autogen/sdk_TP_tutorial_python.html?
highlight=apply#transaction-processor-tutorial-python
- https://sawtooth.hyperledger.org/docs/core/releases/1.0.1/architecture/transactions_and_batches.html
- https://github.com/hyperledger/sawtooth-core/blob/10a04a56ae29b5e4b38127399dc01552db500c0a/
protos/processor.proto#L81
- https://github.com/hyperledger/sawtooth-core/blob/master/sdk/python/sawtooth_sdk/processor/context.py
"""
try:
transaction_payload = TransactionPayload()
transaction_payload.ParseFromString(transaction.payload)
except DecodeError:
raise InvalidTransaction('Cannot decode transaction payload.')
state_processor = self.get_state_processor()
try:
data_pb = state_processor[transaction_payload.method][PB_CLASS]()
data_pb.ParseFromString(transaction_payload.data)
processor = state_processor[transaction_payload.method][PROCESSOR]
validator_class = state_processor[
transaction_payload.method][VALIDATOR]
except KeyError:
raise InvalidTransaction(
f'Invalid account method value ({transaction_payload.method}) has been set.'
)
validator = validator_class.load_proto(data_pb)
if not validator.validate():
raise InvalidTransaction(f'Invalid protobuf data of '
f'"{validator._pb_class.__name__}", '
f'detailed: {validator.errors}')
measurement = METRICS_SENDER.get_time_measurement(
f'tp.{self._family_name}.{transaction_payload.method}')
context_service = CacheContextService(context=context)
context_service.preload_state(transaction.header.inputs)
updated_state = processor(context_service,
transaction.header.signer_public_key,
data_pb)
context_service.set_state(
{k: v.SerializeToString()
for k, v in updated_state.items()})
event_name = state_processor[transaction_payload.method].get(
EMIT_EVENT, None)
if event_name:
event_attributes = get_event_attributes(updated_state,
transaction.signature)
add_event(context_service, event_name, event_attributes)
measurement.done()