def evaluate(self, message):
"""Create and submit workorder and wait for result."""
self.result_text.set("Waiting for evaluation result...")
self.update()
# Create, sign, and submit workorder.
# Convert workloadId to hex.
workload_id = "heart-disease-eval"
workload_id = workload_id.encode("UTF-8").hex()
session_iv = utility.generate_iv()
session_key = utility.generate_key()
requester_nonce = secrets.token_hex(16)
work_order_id = secrets.token_hex(32)
requester_id = secrets.token_hex(32)
wo_params = WorkOrderParams()
wo_params.create_request(
work_order_id,
worker_id,
workload_id,
requester_id,
session_key,
session_iv,
requester_nonce,
result_uri=" ",
notify_uri=" ",
worker_encryption_key=worker_obj.encryption_key,
data_encryption_algorithm="AES-GCM-256")
wo_params.add_in_data(message)
wo_params.add_encrypted_request_hash()
private_key = utility.generate_signing_keys()
if requester_signature:
# Add requester signature and requester verifying_key
if wo_params.add_requester_signature(private_key) is False:
logger.info("Work order request signing failed")
exit(1)
# Set text for JSON sidebar
req_id = 51
self.request_json = wo_params.to_jrpc_string(req_id)
work_order_instance = direct_jrpc.get_work_order_instance()
response = work_order_instance.work_order_submit(
wo_params.get_work_order_id(),
wo_params.get_worker_id(),
wo_params.get_requester_id(),
wo_params.to_string(),
id=req_id)
logger.info("Work order submit response : {}\n ".format(
json.dumps(response, indent=4)))
if "error" in response and response["error"]["code"] != \
WorkOrderStatus.PENDING:
sys.exit(1)
# Create work order receipt
req_id += 1
wo_receipt_instance = direct_jrpc.get_work_order_receipt_instance()
wo_request = json.loads(self.request_json)
wo_receipt_obj = WorkOrderReceiptRequest()
wo_create_receipt = wo_receipt_obj.create_receipt(
wo_request, ReceiptCreateStatus.PENDING.value, private_key)
logger.info("Work order create receipt request : {} \n \n ".format(
json.dumps(wo_create_receipt, indent=4)))
# Submit work order create receipt jrpc request
wo_receipt_resp = wo_receipt_instance.work_order_receipt_create(
wo_create_receipt["workOrderId"],
wo_create_receipt["workerServiceId"],
wo_create_receipt["workerId"], wo_create_receipt["requesterId"],
wo_create_receipt["receiptCreateStatus"],
wo_create_receipt["workOrderRequestHash"],
wo_create_receipt["requesterGeneratedNonce"],
wo_create_receipt["requesterSignature"],
wo_create_receipt["signatureRules"],
wo_create_receipt["receiptVerificationKey"], req_id)
logger.info("Work order create receipt response : {} \n \n ".format(
wo_receipt_resp))
# Retrieve result and set GUI result text
res = work_order_instance.work_order_get_result(work_order_id, req_id)
self.result_json = json.dumps(res, indent=4)
if "result" in res:
sig_obj = signature.ClientSignature()
status = sig_obj.verify_signature(res['result'],
worker_obj.verification_key,
wo_params.get_requester_nonce())
try:
if status == SignatureStatus.PASSED:
logger.info("Signature verification Successful")
decrypted_res = utility. \
decrypted_response(
res['result'], session_key, session_iv)
logger.info(
"\n" +
"Decrypted response:\n {}".format(decrypted_res))
else:
logger.info("Signature verification Failed")
sys.exit(1)
except Exception as err:
logger.info("ERROR: Failed to decrypt response: %s", str(err))
sys.exit(1)
else:
logger.info("\n Work order get result failed {}\n".format(res))
sys.exit(1)
# Set text for JSON sidebar
self.result_text.set(decrypted_res[0]["data"])
# Retrieve receipt
# Set text for JSON sidebar
req_id += 1
self.receipt_json = json.dumps(
wo_receipt_instance.work_order_receipt_retrieve(
work_order_id, req_id),
indent=4)
def Main(args=None):
ParseCommandLine(args)
config["Logging"] = {"LogFile": "__screen__", "LogLevel": "INFO"}
plogger.setup_loggers(config.get("Logging", {}))
sys.stdout = plogger.stream_to_logger(logging.getLogger("STDOUT"),
logging.DEBUG)
sys.stderr = plogger.stream_to_logger(logging.getLogger("STDERR"),
logging.WARN)
logger.info("***************** AVALON *****************")
# Connect to registry list and retrieve registry
if not off_chain:
registry_list_instance = direct_jrpc.get_worker_registry_list_instance(
)
# Lookup returns tuple, first element is number of registries and
# second is element is lookup tag and
# third is list of organization ids.
registry_count, lookup_tag, registry_list = \
registry_list_instance.registry_lookup()
logger.info("\n Registry lookup response: registry count: {} " +
"lookup tag: {} registry list: {}\n".format(
registry_count, lookup_tag, registry_list))
if (registry_count == 0):
logger.warn("No registries found")
sys.exit(1)
# Retrieve the first registry details.
registry_retrieve_result = registry_list_instance.registry_retrieve(
registry_list[0])
logger.info("\n Registry retrieve response: {}\n".format(
registry_retrieve_result))
config["tcf"]["json_rpc_uri"] = registry_retrieve_result[0]
# Prepare worker
req_id = 31
global worker_id
worker_registry_instance = direct_jrpc.get_worker_registry_instance()
if not worker_id:
worker_lookup_result = worker_registry_instance.worker_lookup(
worker_type=WorkerType.TEE_SGX, id=req_id)
logger.info("\n Worker lookup response: {}\n".format(
json.dumps(worker_lookup_result, indent=4)))
if "result" in worker_lookup_result and \
"ids" in worker_lookup_result["result"].keys():
if worker_lookup_result["result"]["totalCount"] != 0:
worker_id = worker_lookup_result["result"]["ids"][0]
else:
logger.error("ERROR: No workers found")
sys.exit(1)
else:
logger.error("ERROR: Failed to lookup worker")
sys.exit(1)
req_id += 1
worker_retrieve_result = worker_registry_instance.worker_retrieve(
worker_id, req_id)
logger.info("\n Worker retrieve response: {}\n".format(
json.dumps(worker_retrieve_result, indent=4)))
worker_obj.load_worker(worker_retrieve_result["result"]["details"])
logger.info(
"**********Worker details Updated with Worker ID" + "*********\n%s\n",
worker_id)
# Convert workloadId to hex
workload_id = "echo-result".encode("UTF-8").hex()
work_order_id = secrets.token_hex(32)
requester_id = secrets.token_hex(32)
session_iv = utility.generate_iv()
session_key = utility.generate_key()
requester_nonce = secrets.token_hex(16)
# Create work order
wo_params = WorkOrderParams(
work_order_id,
worker_id,
workload_id,
requester_id,
session_key,
session_iv,
requester_nonce,
result_uri=" ",
notify_uri=" ",
worker_encryption_key=worker_obj.encryption_key,
data_encryption_algorithm="AES-GCM-256")
# Add worker input data
if input_data_hash:
# Compute data hash for data params inData
data_hash = utility.compute_data_hash(message)
# Convert data_hash to hex
data_hash = hex_utils.byte_array_to_hex_str(data_hash)
wo_params.add_in_data(message, data_hash)
else:
wo_params.add_in_data(message)
# Encrypt work order request hash
wo_params.add_encrypted_request_hash()
private_key = utility.generate_signing_keys()
if requester_signature:
# Add requester signature and requester verifying_key
if wo_params.add_requester_signature(private_key) is False:
logger.info("Work order request signing failed")
exit(1)
# Submit work order
logger.info("Work order submit request : %s, \n \n ",
wo_params.to_jrpc_string(req_id))
work_order_instance = direct_jrpc.get_work_order_instance()
req_id += 1
response = work_order_instance.work_order_submit(
wo_params.get_work_order_id(),
wo_params.get_worker_id(),
wo_params.get_requester_id(),
wo_params.to_string(),
id=req_id)
logger.info("Work order submit response : {}\n ".format(
json.dumps(response, indent=4)))
if "error" in response and response["error"]["code"] != \
WorkOrderStatus.PENDING:
sys.exit(1)
# Create receipt
wo_receipt_instance = direct_jrpc.get_work_order_receipt_instance()
req_id += 1
# Create work order receipt object using WorkOrderReceiptRequest class
wo_request = json.loads(wo_params.to_jrpc_string(req_id))
wo_receipt_obj = WorkOrderReceiptRequest()
wo_create_receipt = wo_receipt_obj.create_receipt(
wo_request, ReceiptCreateStatus.PENDING.value, private_key)
logger.info("Work order create receipt request : {} \n \n ".format(
json.dumps(wo_create_receipt, indent=4)))
# Submit work order create receipt jrpc request
wo_receipt_resp = wo_receipt_instance.work_order_receipt_create(
wo_create_receipt["workOrderId"], wo_create_receipt["workerServiceId"],
wo_create_receipt["workerId"], wo_create_receipt["requesterId"],
wo_create_receipt["receiptCreateStatus"],
wo_create_receipt["workOrderRequestHash"],
wo_create_receipt["requesterGeneratedNonce"],
wo_create_receipt["requesterSignature"],
wo_create_receipt["signatureRules"],
wo_create_receipt["receiptVerificationKey"], req_id)
logger.info("Work order create receipt response : {} \n \n ".format(
wo_receipt_resp))
# Retrieve result
req_id += 1
res = work_order_instance.work_order_get_result(work_order_id, req_id)
logger.info("Work order get result : {}\n ".format(
json.dumps(res, indent=4)))
sig_obj = signature.ClientSignature()
if "result" in res:
status = sig_obj.verify_signature(res['result'],
worker_obj.verification_key,
wo_params.get_requester_nonce())
try:
if status == SignatureStatus.PASSED:
logger.info(
"Work order response signature verification Successful")
decrypted_res = utility.decrypted_response(
res['result'], session_key, session_iv)
logger.info("\nDecrypted response:\n {}".format(decrypted_res))
if input_data_hash:
decrypted_data = decrypted_res[0]["data"]
data_hash_in_resp = (decrypted_res[0]["dataHash"]).upper()
# Verify data hash in response
if utility.verify_data_hash(decrypted_data,
data_hash_in_resp) is False:
sys.exit(1)
else:
logger.info("Signature verification Failed")
sys.exit(1)
except Exception as err:
logger.error("ERROR: Failed to decrypt response: %s", str(err))
sys.exit(1)
else:
logger.info("\n Work order get result failed {}\n".format(res))
sys.exit(1)
# Retrieve receipt
receipt_res = wo_receipt_instance.work_order_receipt_retrieve(
work_order_id, id=req_id)
logger.info("\n Retrieve receipt response:\n {}".format(
json.dumps(receipt_res, indent=4)))
# Retrieve last update to receipt by passing 0xFFFFFFFF
req_id += 1
receipt_update_retrieve = \
wo_receipt_instance.work_order_receipt_update_retrieve(
work_order_id,
None,
1 << 32,
id=req_id)
logger.info("\n Last update to receipt receipt is:\n {}".format(
json.dumps(receipt_update_retrieve, indent=4)))
if "result" in receipt_update_retrieve:
status = sig_obj.verify_update_receipt_signature(
receipt_update_retrieve['result'])
if status == SignatureStatus.PASSED:
logger.info("Work order receipt retrieve signature" +
" verification Successful")
else:
logger.info("Work order receipt retrieve signature" +
" verification failed!!")
sys.exit(1)
else:
logger.info("Work order receipt update failed")
# Receipt lookup based on requesterId
req_id += 1
receipt_lookup_res = wo_receipt_instance.work_order_receipt_lookup(
requester_id=requester_id, id=req_id)
logger.info("\n Work order receipt lookup response :\n {}".format(
json.dumps(receipt_lookup_res, indent=4)))
