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package blockchain
import (
// InvokeHello
func (setup *FabricSetup) InvokeHello(value string) (string, error) {
// Prepare arguments
var args []string
args = append(args, "invoke")
args = append(args, "invoke")
args = append(args, "hello")
args = append(args, value)
eventID := "eventInvoke"
// Add data that will be visible in the proposal, like a description of the invoke request
transientDataMap := make(map[string][]byte)
transientDataMap["result"] = []byte("Transient data in hello invoke")
// Register a notification handler on the client
notifier := make(chan *chclient.CCEvent)
rce, err := setup.client.RegisterChaincodeEvent(notifier, setup.ChainCodeID, eventID)
if err != nil {
return "", fmt.Errorf("failed to register chaincode evet: %v", err)
// Create a request (proposal) and send it
response, err := setup.client.Execute(chclient.Request{ChaincodeID: setup.ChainCodeID, Fcn: args[0], Args: [][]byte{[]byte(args[1]), []byte(args[2]), []byte(args[3])}, TransientMap: transientDataMap})
if err != nil {
return "", fmt.Errorf("failed to move funds: %v", err)
// Wait for the result of the submission
select {
case ccEvent := <-notifier:
fmt.Printf("Received CC event: %s\n", ccEvent)
case <-time.After(time.Second * 20):
return "", fmt.Errorf("did NOT receive CC event for eventId(%s)", eventID)
// Unregister the notification handler previously created on the client
err = setup.client.UnregisterChaincodeEvent(rce)
return response.TransactionID.ID, nil