Пример #1
0
//helper
func (p *PassthruChaincode) iq(invoke bool, stub *shim.ChaincodeStub, function string, args []string) ([]byte, error) {
	if function == "" {
		return nil, errors.New("Chaincode ID not provided")
	}
	chaincodeID := function

	var f string
	var cargs []string
	if len(args) > 0 {
		f = args[0]
		cargs = args[1:]
	}

	if invoke {
		return stub.InvokeChaincode(chaincodeID, f, cargs)
	}
	return stub.QueryChaincode(chaincodeID, f, cargs)
}
Пример #2
-1
//==============================================================================================================================
//	Invoke Functions
//==============================================================================================================================
//	add_number - Invokes the numbers chaincode and calls the function add_number, chaincode name currently hardcoded
//
//==============================================================================================================================
func (t *SimpleChaincode) add_number(stub *shim.ChaincodeStub, args []string) ([]byte, error) {

	_, err := stub.InvokeChaincode("970000a712cf185274f39566276b18591c125ab41ee2674b3ccfeeed3e95a21b7129a4b97598e7807a362b345609caa8985f28f68e3a1614e0f12dcd99d3a589", "add_number", args)

	if err != nil {
		return nil, errors.New("Unable to invoke chaincode")
	}

	return nil, nil
}
Пример #3
-1
// Invoke invokes another chaincode - chaincode_example02, upon receipt of an event and changes event state
func (t *SimpleChaincode) Invoke(stub *shim.ChaincodeStub, function string, args []string) ([]byte, error) {
	var event string // Event entity
	var eventVal int // State of event
	var err error

	if len(args) != 2 {
		return nil, errors.New("Incorrect number of arguments. Expecting 2")
	}

	event = args[0]
	eventVal, err = strconv.Atoi(args[1])
	if err != nil {
		return nil, errors.New("Expected integer value for event state change")
	}

	if eventVal != 1 {
		fmt.Printf("Unexpected event. Doing nothing\n")
		return nil, nil
	}

	// Get the chaincode to call from the ledger
	chainCodeToCall, err := t.getChaincodeToCall(stub)
	if err != nil {
		return nil, err
	}

	f := "invoke"
	invokeArgs := []string{"a", "b", "10"}
	response, err := stub.InvokeChaincode(chainCodeToCall, f, invokeArgs)
	if err != nil {
		errStr := fmt.Sprintf("Failed to invoke chaincode. Got error: %s", err.Error())
		fmt.Printf(errStr)
		return nil, errors.New(errStr)
	}

	fmt.Printf("Invoke chaincode successful. Got response %s", string(response))

	// Write the event state back to the ledger
	err = stub.PutState(event, []byte(strconv.Itoa(eventVal)))
	if err != nil {
		return nil, err
	}

	return nil, nil
}