def invokeChaincode(context, enrollId, ccAlias, functionName):
# Get the deployment for the supplied chaincode alias
deployedCcSpec = getDeployment(context, ccAlias)
assert deployedCcSpec != None, "Deployment NOT found for chaincode alias '{0}'".format(
ccAlias)
# Create a new ChaincodeSpec by copying the deployed one
newChaincodeSpec = chaincode_pb2.ChaincodeSpec()
newChaincodeSpec.CopyFrom(deployedCcSpec)
# Update hte chaincodeSpec ctorMsg for invoke
args = getArgsFromContextForUser(context, enrollId)
chaincodeInput = chaincode_pb2.ChaincodeInput(function=functionName,
args=args)
newChaincodeSpec.ctorMsg.CopyFrom(chaincodeInput)
ccInvocationSpec = chaincode_pb2.ChaincodeInvocationSpec(
chaincodeSpec=newChaincodeSpec)
(channel, userRegistration) = getGRPCChannelAndUser(context, enrollId)
stub = devops_pb2.beta_create_Devops_stub(channel)
response = stub.Invoke(ccInvocationSpec, 2)
return response
def step_impl(context, enrollId, assignerAppTCert, role, assigneeAppTCert):
assert 'users' in context, "users not found in context. Did you register a user?"
assert 'compose_containers' in context, "compose_containers not found in context"
(channel, userRegistration) = bdd_grpc_util.getGRPCChannelAndUser(
context, enrollId)
stub = devops_pb2.beta_create_Devops_stub(channel)
# First get binding with EXP_PrepareForTx
secret = bdd_grpc_util.getSecretForUserRegistration(userRegistration)
response = stub.EXP_PrepareForTx(secret, 2)
assert response.status == fabric_pb2.Response.SUCCESS, 'Failure getting Binding from {0}, for user "{1}": {2}'.format(
userRegistration.composeService, enrollId, response.msg)
binding = response.msg
# Now produce the sigma EXP_ProduceSigma
chaincodeInput = chaincode_pb2.ChaincodeInput(
function="addRole",
args=(base64.b64encode(userRegistration.tags[assigneeAppTCert]), role))
chaincodeInputRaw = chaincodeInput.SerializeToString()
appTCert = userRegistration.tags[assignerAppTCert]
sigmaInput = devops_pb2.SigmaInput(secret=secret,
appTCert=appTCert,
data=chaincodeInputRaw + binding)
response = stub.EXP_ProduceSigma(sigmaInput, 2)
assert response.status == fabric_pb2.Response.SUCCESS, 'Failure prducing sigma from {0}, for user "{1}": {2}'.format(
userRegistration.composeService, enrollId, response.msg)
sigmaOutputBytes = response.msg
# Parse the msg bytes as a SigmaOutput message
sigmaOutput = devops_pb2.SigmaOutput()
sigmaOutput.ParseFromString(sigmaOutputBytes)
print('Length of sigma = {0}'.format(len(sigmaOutput.sigma)))
# Now execute the transaction with the saved binding, EXP_ExecuteWithBinding
assert "grpcChaincodeSpec" in context, "grpcChaincodeSpec NOT found in context"
newChaincodeSpec = chaincode_pb2.ChaincodeSpec()
newChaincodeSpec.CopyFrom(context.grpcChaincodeSpec)
newChaincodeSpec.metadata = sigmaOutput.asn1Encoding
newChaincodeSpec.ctorMsg.CopyFrom(chaincodeInput)
ccInvocationSpec = chaincode_pb2.ChaincodeInvocationSpec(
chaincodeSpec=newChaincodeSpec)
executeWithBinding = devops_pb2.ExecuteWithBinding(
chaincodeInvocationSpec=ccInvocationSpec, binding=binding)
response = stub.EXP_ExecuteWithBinding(executeWithBinding, 60)
assert response.status == fabric_pb2.Response.SUCCESS, 'Failure executeWithBinding from {0}, for user "{1}": {2}'.format(
userRegistration.composeService, enrollId, response.msg)
context.response = response
context.transactionID = response.msg
def createDeploymentProposalForBDD(ccDeploymentSpec):
"Returns a deployment proposal of chaincode type"
lc_chaincode_spec = chaincode_pb2.ChaincodeSpec(
type=chaincode_pb2.ChaincodeSpec.GOLANG,
chaincodeID=chaincode_pb2.ChaincodeID(name="lccc"),
ctorMsg=chaincode_pb2.ChaincodeInput(
args=['deploy', 'default',
ccDeploymentSpec.SerializeToString()]))
lc_chaincode_invocation_spec = chaincode_pb2.ChaincodeInvocationSpec(
chaincodeSpec=lc_chaincode_spec)
# make proposal
proposal = fabric_next_pb2.Proposal(
type=fabric_next_pb2.Proposal.CHAINCODE, id=createPropsalId())
proposal.payload = lc_chaincode_invocation_spec.SerializeToString()
return proposal