func (handler *ConsensusHandler) doChainQuery(msg *pb.OpenchainMessage) error {
var response *pb.Response
tx := &pb.Transaction{}
err := proto.Unmarshal(msg.Payload, tx)
if err != nil {
response = &pb.Response{Status: pb.Response_FAILURE,
Msg: []byte(fmt.Sprintf("Error unmarshalling payload of received OpenchainMessage:%s.", msg.Type))}
} else {
// Verify transaction signature if security is enabled
secHelper := handler.coordinator.GetSecHelper()
if nil != secHelper {
if logger.IsEnabledFor(logging.DEBUG) {
logger.Debug("Verifying transaction signature %s", tx.Uuid)
}
if tx, err = secHelper.TransactionPreValidation(tx); nil != err {
response = &pb.Response{Status: pb.Response_FAILURE, Msg: []byte(err.Error())}
logger.Debug("Failed to verify transaction %v", err)
}
}
// execute if response nil (ie, no error)
if nil == response {
result, err := chaincode.Execute(context.Background(),
chaincode.GetChain(chaincode.DefaultChain), tx, secHelper)
if err != nil {
response = &pb.Response{Status: pb.Response_FAILURE,
Msg: []byte(fmt.Sprintf("Error:%s", err))}
} else {
response = &pb.Response{Status: pb.Response_SUCCESS, Msg: result}
}
}
}
payload, _ := proto.Marshal(response)
handler.SendMessage(&pb.OpenchainMessage{Type: pb.OpenchainMessage_RESPONSE, Payload: payload})
return nil
}
func whoIsTheOwner(asset string) ([]byte, error) {
chaincodeInput := &pb.ChaincodeInput{Function: "query", Args: []string{asset}}
// Prepare spec and submit
spec := &pb.ChaincodeSpec{
Type: 1,
ChaincodeID: &pb.ChaincodeID{Name: "mycc"},
CtorMsg: chaincodeInput,
ConfidentialityLevel: pb.ConfidentialityLevel_PUBLIC,
}
var ctx = context.Background()
chaincodeInvocationSpec := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}
tid := chaincodeInvocationSpec.ChaincodeSpec.ChaincodeID.Name
// Now create the Transactions message and send to Peer.
transaction, err := administrator.NewChaincodeQuery(chaincodeInvocationSpec, tid)
if err != nil {
return nil, fmt.Errorf("Error deploying chaincode: %s ", err)
}
ledger, err := ledger.GetLedger()
ledger.BeginTxBatch("1")
result, err := chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
if err != nil {
return nil, fmt.Errorf("Error deploying chaincode: %s", err)
}
ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)
return result, err
}
func transferOwnership(owner crypto.Client, ownerCert crypto.CertificateHandler, asset string, newOwnerCert crypto.CertificateHandler) error {
// Get a transaction handler to be used to submit the execute transaction
// and bind the chaincode access control logic using the binding
submittingCertHandler, err := owner.GetTCertificateHandlerNext()
if err != nil {
return err
}
txHandler, err := submittingCertHandler.GetTransactionHandler()
if err != nil {
return err
}
binding, err := txHandler.GetBinding()
if err != nil {
return err
}
chaincodeInput := &pb.ChaincodeInput{Function: "transfer", Args: []string{asset, string(newOwnerCert.GetCertificate())}}
chaincodeInputRaw, err := proto.Marshal(chaincodeInput)
if err != nil {
return err
}
// Access control. Owner signs chaincodeInputRaw || binding to confirm his identity
sigma, err := ownerCert.Sign(append(chaincodeInputRaw, binding...))
if err != nil {
return err
}
// Prepare spec and submit
spec := &pb.ChaincodeSpec{
Type: 1,
ChaincodeID: &pb.ChaincodeID{Name: "mycc"},
CtorMsg: chaincodeInput,
Metadata: sigma, // Proof of identity
ConfidentialityLevel: pb.ConfidentialityLevel_PUBLIC,
}
var ctx = context.Background()
chaincodeInvocationSpec := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}
tid := chaincodeInvocationSpec.ChaincodeSpec.ChaincodeID.Name
// Now create the Transactions message and send to Peer.
transaction, err := txHandler.NewChaincodeExecute(chaincodeInvocationSpec, tid)
if err != nil {
return fmt.Errorf("Error deploying chaincode: %s ", err)
}
ledger, err := ledger.GetLedger()
ledger.BeginTxBatch("1")
_, err = chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
if err != nil {
return fmt.Errorf("Error deploying chaincode: %s", err)
}
ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)
return err
}
func deploy(admCert crypto.CertificateHandler) error {
// Prepare the spec. The metadata includes the identity of the administrator
spec := &pb.ChaincodeSpec{
Type: 1,
ChaincodeID: &pb.ChaincodeID{Name: "mycc"},
CtorMsg: &pb.ChaincodeInput{Function: "init", Args: []string{}},
Metadata: admCert.GetCertificate(),
ConfidentialityLevel: pb.ConfidentialityLevel_PUBLIC,
}
// First build and get the deployment spec
var ctx = context.Background()
chaincodeDeploymentSpec, err := getDeploymentSpec(ctx, spec)
if err != nil {
return err
}
tid := chaincodeDeploymentSpec.ChaincodeSpec.ChaincodeID.Name
// Now create the Transactions message and send to Peer.
transaction, err := administrator.NewChaincodeDeployTransaction(chaincodeDeploymentSpec, tid)
if err != nil {
return fmt.Errorf("Error deploying chaincode: %s ", err)
}
ledger, err := ledger.GetLedger()
ledger.BeginTxBatch("1")
_, err = chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
if err != nil {
return fmt.Errorf("Error deploying chaincode: %s", err)
}
ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)
return err
}
// DeployLocal deploys the supplied chaincode image to the local peer
func DeployLocal(ctx context.Context, spec *protos.ChaincodeSpec, secCxt crypto.Peer) (*protos.Transaction, []byte, error) {
// First build and get the deployment spec
chaincodeDeploymentSpec, err := BuildLocal(ctx, spec)
if err != nil {
genesisLogger.Error(fmt.Sprintf("Error deploying chaincode spec: %v\n\n error: %s", spec, err))
return nil, nil, err
}
transaction, err := protos.NewChaincodeDeployTransaction(chaincodeDeploymentSpec, chaincodeDeploymentSpec.ChaincodeSpec.ChaincodeID.Name)
if err != nil {
return nil, nil, fmt.Errorf("Error deploying chaincode: %s ", err)
}
//chaincode.NewChaincodeSupport(chaincode.DefaultChain, peer.GetPeerEndpoint, false, 120000)
result, err := chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction, secCxt)
return transaction, result, err
}
// DeployLocal deploys the supplied chaincode image to the local peer
func DeployLocal(ctx context.Context, spec *protos.ChaincodeSpec) (*protos.Transaction, []byte, error) {
// First build and get the deployment spec
chaincodeDeploymentSpec, err := BuildLocal(ctx, spec)
if err != nil {
genesisLogger.Error(fmt.Sprintf("Error deploying chaincode spec: %v\n\n error: %s", spec, err))
return nil, nil, err
}
transaction, err := protos.NewChaincodeDeployTransaction(chaincodeDeploymentSpec, chaincodeDeploymentSpec.ChaincodeSpec.ChaincodeID.Name)
if err != nil {
return nil, nil, fmt.Errorf("Error deploying chaincode: %s ", err)
}
//chaincode.NewChaincodeSupport(chaincode.DefaultChain, peer.GetPeerEndpoint, false, 120000)
// The secHelper is set during creat ChaincodeSupport, so we don't need this step
//ctx = context.WithValue(ctx, "security", secCxt)
result, err := chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
return transaction, result, err
}