pcs-main-chaincode_invoke.go

func (cci *PreciousCargoChaincode) Invoke(stub shim.ChaincodeStubInterface) pb.Response {
	function, _ := stub.GetFunctionAndParameters()
	if invType, found := cci.handlers[function]; found {
		// from invType as reflect.Type, create a new object and
		// cast its interface to InvocationHandler.
		inv := reflect.New(invType).Interface().(InvocationHandler)
		// let it check its input
		if err := inv.checkParseArguments(stub); err != nil {
			return shim.Error(err.Error())
		}
		// run the transaction
		if err := inv.process(stub); err != nil {
			return shim.Error(err.Error())
		}
		// send out the response
		r, err := json.Marshal(inv.getResponse(stub))
		if err != nil {
			return shim.Error("internal JSON marshal error (response)")
		}
		return shim.Success([]byte(r))
	}

	return shim.Error("Invalid function name.")
}