def prepare_buy_for_state(txn):
from common.serializers.serialization import domain_state_serializer
identifier = get_from(txn)
req_id = get_req_id(txn)
value = domain_state_serializer.serialize({"amount": get_payload_data(txn)['amount']})
key = TestDomainRequestHandler.prepare_buy_key(identifier, req_id)
return key, value
def prepare_buy_for_state(txn):
identifier = get_from(txn)
req_id = get_req_id(txn)
value = domain_state_serializer.serialize(
{"amount": get_payload_data(txn)['amount']})
key = BuyHandler.prepare_buy_key(identifier, req_id)
return key, value
def prepare_buy_for_state(txn):
from common.serializers.serialization import domain_state_serializer
identifier = txn.get(f.IDENTIFIER.nm)
req_id = txn.get(f.REQ_ID.nm)
value = domain_state_serializer.serialize({"amount": txn['amount']})
key = TestDomainRequestHandler.prepare_buy_key(identifier, req_id)
return key, value
def prepare_for_state_read(req: Request):
if req.txn_type == "buy":
txn = reqToTxn(req)
key = BuyHandler.prepare_buy_key(req.identifier, req.reqId)
value = domain_state_serializer.serialize(
{"amount": get_payload_data(txn)['amount']})
return key, value
def get_result(self, request: Request):
self._validate_request_type(request)
nym = request.operation[TARGET_NYM]
path = domain.make_state_path_for_nym(nym)
nym_data, proof = self._get_value_from_state(path, with_proof=True)
if nym_data:
nym_data = domain_state_serializer.deserialize(nym_data)
nym_data[TARGET_NYM] = nym
data = domain_state_serializer.serialize(nym_data)
seq_no = nym_data[f.SEQ_NO.nm]
update_time = nym_data[TXN_TIME]
else:
data = None
seq_no = None
update_time = None
# TODO: add update time here!
result = self.make_result(request=request,
data=data,
last_seq_no=seq_no,
update_time=update_time,
proof=proof)
result.update(request.operation)
return result
def update_state(self, txn, prev_result, request, is_committed=False):
self._validate_txn_type(txn)
key = self.gen_state_key(txn)
value = domain_state_serializer.serialize({"amount": get_payload_data(txn)['amount']})
self.state.set(key, value)
logger.trace('{} after adding to state, headhash is {}'.
format(self, self.state.headHash))
def prepare_buy_for_state(txn):
from common.serializers.serialization import domain_state_serializer
identifier = get_from(txn)
req_id = get_req_id(txn)
value = domain_state_serializer.serialize({"amount": get_payload_data(txn)['amount']})
key = TestDomainRequestHandler.prepare_buy_key(identifier, req_id)
return key, value
def prepare_nym_for_state(txn):
# TODO: this is semi-duplicated in plenum.DomainRequestHandler
data = txn.get(DATA)
parsed = domain_state_serializer.deserialize(data)
parsed.pop(TARGET_NYM, None)
value = domain_state_serializer.serialize(parsed)
nym = txn[TARGET_NYM]
key = make_state_path_for_nym(nym)
return key, value
def prepare_get_nym_for_state(txn):
data = txn.get(DATA)
value = None
if data is not None:
parsed = domain_state_serializer.deserialize(data)
parsed.pop(TARGET_NYM, None)
value = domain_state_serializer.serialize(parsed)
nym = txn[TARGET_NYM]
key = make_state_path_for_nym(nym)
return key, value
def prepare_get_nym_for_state(reply):
data = reply.get(DATA)
value = None
if data is not None:
parsed = domain_state_serializer.deserialize(data)
parsed.pop(TARGET_NYM, None)
value = domain_state_serializer.serialize(parsed)
nym = reply[TARGET_NYM]
key = make_state_path_for_nym(nym)
return key, value
def add_txns(db_manager, ledger_id, count, txn_time):
ledger = db_manager.get_ledger(ledger_id)
state = db_manager.get_state(ledger_id)
txns = [do_req_to_txn({}, {"ledger_id": ledger_id, "num": i}) for i in range(count)]
ledger.append_txns_metadata(txns, txn_time)
ledger.appendTxns(txns)
for i, txn in enumerate(txns):
state.set(bytes(ledger_id + i),
domain_state_serializer.serialize(txn))
def get_nym_verify_proof(read_manager, db_manager, nym, data, multi_sig):
request = Request(operation={
TARGET_NYM: nym,
TXN_TYPE: GET_NYM,
},
signatures={},
protocolVersion=CURRENT_PROTOCOL_VERSION)
result = read_manager.get_result(request)
proof = extract_proof(result, multi_sig)
result_data = None
assert proof
if data:
assert result[DATA]
result_data = domain_state_serializer.deserialize(result[DATA])
data_from_req = copy.copy(result_data)
data_from_req.pop(f.IDENTIFIER.nm, None)
data_from_req.pop(f.SEQ_NO.nm, None)
data_from_req.pop(TXN_TIME, None)
assert data_from_req == data
# Verifying signed state proof
path = nym_to_state_key(nym)
# If the value does not exist, serialization should be null and
# verify_state_proof needs to be given null (None). This is done to
# differentiate between absence of value and presence of empty string value
if result_data:
data.pop(TARGET_NYM, None)
data.update({
f.IDENTIFIER.nm: result_data[f.IDENTIFIER.nm],
f.SEQ_NO.nm: result_data[f.SEQ_NO.nm],
TXN_TIME: result_data[TXN_TIME]
})
serialized_value = domain_state_serializer.serialize(
data) if data else None
proof_nodes = base64.b64decode(proof[PROOF_NODES])
root_hash = base58.b58decode(proof[ROOT_HASH])
return db_manager.get_state(DOMAIN_LEDGER_ID).verify_state_proof(
root_hash, path, serialized_value, proof_nodes, serialized=True)
def hash_of(text) -> str:
if not isinstance(text, (str, bytes)):
text = domain_state_serializer.serialize(text)
if not isinstance(text, bytes):
text = text.encode()
return sha256(text).hexdigest()
def encode_state_value(value, seqNo, txnTime):
return domain_state_serializer.serialize({
LAST_SEQ_NO: seqNo,
LAST_UPDATE_TIME: txnTime,
VALUE: value
})
def _reset_fees(self, node):
empty_fees = domain_state_serializer.serialize({})
node.db_manager.get_state(CONFIG_LEDGER_ID).set(build_path_for_set_fees().encode(), empty_fees)
def encode_state_value(value, seqNo, txnTime):
return domain_state_serializer.serialize({
LAST_SEQ_NO: seqNo,
LAST_UPDATE_TIME: txnTime,
VALUE: value
})
def update_nym(state, identifier, role):
state.set(
nym_to_state_key(identifier),
domain_state_serializer.serialize(
create_nym_txn(identifier, role)['txn']['data']))
def hash_of(text) -> str:
if not isinstance(text, (str, bytes)):
text = domain_state_serializer.serialize(text)
if not isinstance(text, bytes):
text = text.encode()
return sha256(text).hexdigest()