/
sdkfunctions.go
98 lines (79 loc) · 3.6 KB
/
sdkfunctions.go
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package blockchainSDK
import(
"fmt"
"github.com/hyperledger/fabric-sdk-go/pkg/client/channel"
"github.com/hyperledger/fabric-sdk-go/pkg/common/providers/fab"
"time"
)
// add entry using SDK
func (s *SetupSDK) InitEntrySDK(ID string, Hash string, Application string, NodeIP string, Owner string, Updated string) (string, error) {
eventID := "initEvent"
// register chaincode event
registered, notifier, err := s.event.RegisterChaincodeEvent(s.ChainCodeID, eventID)
if err != nil {
return "", err
}
defer s.event.Unregister(registered)
// Create a request for entry init and send it
response, err := s.client.Execute(channel.Request{ChaincodeID: s.ChainCodeID, Fcn: "initEntry", Args: [][]byte{[]byte(ID), []byte(Hash), []byte(Application), []byte(NodeIP), []byte(Owner), []byte(Updated) }})
if err != nil {
return "", fmt.Errorf("failed to innitiate: %v", err)
}
// Wait for the result of the submission
var ccEvent *fab.CCEvent
select {
case ccEvent = <-notifier:
fmt.Printf("Received CC event Transaction ID: %s\n", ccEvent.TxID)
fmt.Printf("Received CC event ChaincodeID: %v\n", ccEvent.ChaincodeID)
fmt.Printf("Received CC event name: %v\n", ccEvent.EventName)
fmt.Printf("Received CC event payload: %x\n", ccEvent.Payload)
fmt.Printf("Received CC event block number in which the event was commited: %v\n", ccEvent.BlockNumber)
fmt.Printf("Received CC event URL of the peer: %v\n", ccEvent.SourceURL)
fmt.Printf("Received CC event: %v\n", ccEvent)
case <-time.After(time.Second * 20):
return "", fmt.Errorf("did NOT receive CC event for eventId(%s)", eventID)
}
return string(response.Payload), nil
}
//read entry on chaincode using SDK
func (s *SetupSDK) ReadEntrySDK(ID string) (string, error) {
//creat and send request for reading an entry
response, err := s.client.Query(channel.Request{ChaincodeID: s.ChainCodeID, Fcn: "readEntry", Args: [][]byte{[]byte(ID)}})
if err != nil {
return "", fmt.Errorf("failed to query: %v", err)
}
return string(response.Payload), nil
}
//delete entry on chaincode using SDK
func (s *SetupSDK) DeleteEntrySDK(ID string) (string, error) {
//register event
eventID := "deleteEvent"
reg, notifier, err := s.event.RegisterChaincodeEvent(s.ChainCodeID, eventID)
if err != nil {
return "", err
}
defer s.event.Unregister(reg)
//create a request for deletion and sent it
resp, err := s.client.Execute(channel.Request{ChaincodeID: s.ChainCodeID, Fcn: "deleteEntry", Args: [][]byte{[]byte(ID)} })
if err != nil {
return "", fmt.Errorf("failed to delete: %v",err)
}
// Wait for the result of the submission
var ccEvent *fab.CCEvent
select {
case ccEvent = <-notifier:
fmt.Printf("Received CC event: %v\n", ccEvent)
case <-time.After(time.Second * 20):
return "", fmt.Errorf("did NOT receive CC event for eventId(%s)", eventID)
}
return string(resp.Payload), nil
}
//search by username on chaincode using SDK
func (s *SetupSDK) SearchByOwnerSDK(Owner string) (string, error) {
//creat and send request for reading an entry
response, err := s.client.Query(channel.Request{ChaincodeID: s.ChainCodeID, Fcn: "searchByOwner", Args: [][]byte{[]byte(Owner)}})
if err != nil {
return "", fmt.Errorf("failed to query: %v", err)
}
return string(response.Payload), nil
}