def query(self,
name,
counter=1,
creator_account=None,
created_time=None,
page_size=None,
first_tx_hash=None,
**kwargs):
"""
Creates a protobuf query with specified set of entities
:param name: CamelCased name of query to be executed
:param counter: query counter, should be incremented for each new query
:param creator_account: account id of query creator
:param created_time: query creation timestamp in milliseconds
:param page_size: a non-zero positive number, size of result rowset for queries with pagination
:param first_tx_hash: optional hash of a transaction that will be the beginning of the next page
:param kwargs: query arguments as they defined in schema
:return: a proto query
"""
assert creator_account or self.creator_account, "No account name specified as query creator id"
pagination_meta = None
if not created_time:
created_time = self.now()
if not creator_account:
creator_account = self.creator_account
if page_size or first_tx_hash:
pagination_meta = queries_pb2.TxPaginationMeta()
pagination_meta.page_size = page_size
if first_tx_hash:
pagination_meta.first_tx_hash = first_tx_hash
meta = queries_pb2.QueryPayloadMeta()
meta.created_time = created_time
meta.creator_account_id = creator_account
meta.query_counter = counter
query_wrapper = queries_pb2.Query()
query_wrapper.payload.meta.CopyFrom(meta)
field_name = Iroha._camel_case_to_snake_case(name)
internal_query = getattr(query_wrapper.payload, field_name)
for key, value in kwargs.items():
if 'tx_hashes' == key:
hashes_attr = getattr(internal_query, key)
hashes_attr.extend(value)
continue
setattr(internal_query, key, value)
if pagination_meta:
pagination_meta_attr = getattr(internal_query, 'pagination_meta')
pagination_meta_attr.CopyFrom(pagination_meta)
if not len(kwargs):
message = getattr(queries_pb2, name)()
internal_query.CopyFrom(message)
return query_wrapper
def send_query(query, key_pair):
query_blob = proto_query_helper.signAndAddSignature(query, key_pair).blob()
proto_query = queries_pb2.Query()
if sys.version_info[0] == 2:
tmp = ''.join(map(chr, query_blob))
else:
tmp = bytes(query_blob)
proto_query.ParseFromString(tmp)
channel = grpc.insecure_channel('127.0.0.1:50051')
query_stub = endpoint_pb2_grpc.QueryServiceStub(channel)
query_response = query_stub.Find(proto_query)
return query_response
def send_query(query, key_pair, address='127.0.0.1:50051'):
"""
Send query to iroha address
:param query: to send
:param key_pair: for signatures
:param address: iroha address
:return: query response
"""
query_blob = proto_query_helper.signAndAddSignature(query, key_pair).blob()
proto_query = queries_pb2.Query()
if sys.version_info[0] == 2:
tmp = ''.join(map(chr, query_blob))
else:
tmp = bytes(query_blob)
proto_query.ParseFromString(tmp)
channel = grpc.insecure_channel(address)
query_stub = endpoint_pb2_grpc.QueryServiceStub(channel)
query_response = query_stub.Find(proto_query)
return MessageToJson(query_response)
response = stub.Status(request)
status = endpoint_pb2.TxStatus.Name(response.tx_status)
print("Status of transaction is:", status)
if status != "COMMITTED":
print("Your transaction wasn't committed")
exit(1)
query = query_builder.creatorAccountId(creator) \
.createdTime(current_time) \
.queryCounter(start_query_counter) \
.getAssetInfo("dollar#ru") \
.build()
query_blob = proto_query_helper.signAndAddSignature(query, me_kp).blob()
proto_query = queries_pb2.Query()
proto_query.ParseFromString(''.join(map(chr, query_blob)))
query_stub = endpoint_pb2_grpc.QueryServiceStub(channel)
query_response = query_stub.Find(proto_query)
if not query_response.HasField("asset_response"):
print("Query response error")
exit(1)
else:
print("Query responded with asset response")
asset_info = query_response.asset_response.asset
print("Asset Id =", asset_info.asset_id)
print("Precision =", asset_info.precision)