/
utils.go
45 lines (32 loc) · 1.09 KB
/
utils.go
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package blockchain
import (
"fmt"
"time"
"github.com/hyperledger/fabric-sdk-go/pkg/client/channel"
)
func (user *FabricUser) ExecuteTranctionEvent(eventID, fcnName string, args [][]byte) (*channel.Response, error) {
reg, notifier, err := user.Fabric.event.RegisterChaincodeEvent(user.Fabric.ChaincodeID, eventID)
if err != nil {
return nil, fmt.Errorf("Blockchain ..... failed to register event: %v", err)
}
defer user.Fabric.event.Unregister(reg)
transientDataMap := make(map[string][]byte)
transientDataMap["result"] = []byte("Transient data to invoke in the ledger")
response, err := user.ChannelClient.Execute(channel.Request{
ChaincodeID: user.Fabric.ChaincodeID,
Fcn: fcnName,
Args: args,
TransientMap: transientDataMap,
})
if err != nil {
fmt.Printf("failed to execute event: %s", err.Error())
return nil, nil
}
select {
case ccEvent := <-notifier:
fmt.Printf("Received CC event: %v\n", ccEvent)
case <-time.After(time.Second * 60):
return nil, fmt.Errorf("did NOT receive CC event for eventId(%s)", eventID)
}
return &response, nil
}