Golang protos.NewChaincodeExecute函數代碼示例

// Invoke or query a chaincode.
func invoke(ctx context.Context, spec *pb.ChaincodeSpec, typ pb.Transaction_Type) (*pb.ChaincodeEvent, string, []byte, error) {
	chaincodeInvocationSpec := &pb.ChaincodeInvocationSpec{ChaincodeSpec: spec}

	// Now create the Transactions message and send to Peer.
	uuid := util.GenerateUUID()

	var transaction *pb.Transaction
	var err error
	transaction, err = pb.NewChaincodeExecute(chaincodeInvocationSpec, uuid, typ)
	if err != nil {
		return nil, uuid, nil, fmt.Errorf("Error invoking chaincode: %s ", err)
	}

	var retval []byte
	var execErr error
	var ccevt *pb.ChaincodeEvent
	if typ == pb.Transaction_CHAINCODE_QUERY {
		retval, ccevt, execErr = chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
	} else {
		ledger, _ := ledger.GetLedger()
		ledger.BeginTxBatch("1")
		retval, ccevt, execErr = chaincode.Execute(ctx, chaincode.GetChain(chaincode.DefaultChain), transaction)
		if err != nil {
			return nil, uuid, nil, fmt.Errorf("Error invoking chaincode: %s ", err)
		}
		ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)
	}

	return ccevt, uuid, retval, execErr
}

func (d *Devops) createExecTx(spec *pb.ChaincodeInvocationSpec, attributes []string, uuid string, invokeTx bool, sec crypto.Client) (*pb.Transaction, error) {
	var tx *pb.Transaction
	var err error

	//TODO What should we do with the attributes
	if nil != sec {
		if devopsLogger.IsEnabledFor(logging.DEBUG) {
			devopsLogger.Debugf("Creating secure invocation transaction %s", uuid)
		}
		if invokeTx {
			tx, err = sec.NewChaincodeExecute(spec, uuid, attributes...)
		} else {
			tx, err = sec.NewChaincodeQuery(spec, uuid, attributes...)
		}
		if nil != err {
			return nil, err
		}
	} else {
		if devopsLogger.IsEnabledFor(logging.DEBUG) {
			devopsLogger.Debugf("Creating invocation transaction (%s)", uuid)
		}
		var t pb.Transaction_Type
		if invokeTx {
			t = pb.Transaction_CHAINCODE_INVOKE
		} else {
			t = pb.Transaction_CHAINCODE_QUERY
		}
		tx, err = pb.NewChaincodeExecute(spec, uuid, t)
		if nil != err {
			return nil, err
		}
	}
	return tx, nil
}

func createTransaction(invokeTx bool, spec *pb.ChaincodeInvocationSpec, uuid string) (*pb.Transaction, error) {
	var tx *pb.Transaction
	var err error
	var sec crypto.Client
	if nil != sec {
		sec, err = crypto.InitClient(spec.ChaincodeSpec.SecureContext, nil)
		defer crypto.CloseClient(sec)
		if nil != err {
			return nil, err
		}
		if invokeTx {
			tx, err = sec.NewChaincodeExecute(spec, uuid)
		} else {
			tx, err = sec.NewChaincodeQuery(spec, uuid)
		}
		if nil != err {
			return nil, err
		}
	} else {
		var t pb.Transaction_Type
		if invokeTx {
			t = pb.Transaction_CHAINCODE_INVOKE
		} else {
			t = pb.Transaction_CHAINCODE_QUERY
		}
		tx, err = pb.NewChaincodeExecute(spec, uuid, t)
		if nil != err {
			return nil, err
		}
	}
	return tx, nil
}

func (client *clientImpl) createQueryTx(chaincodeInvocation *obc.ChaincodeInvocationSpec, uuid string, nonce []byte, tCert tCert, attrs ...string) (*obc.Transaction, error) {
	// Create a new transaction
	tx, err := obc.NewChaincodeExecute(chaincodeInvocation, uuid, obc.Transaction_CHAINCODE_QUERY)
	if err != nil {
		client.Errorf("Failed creating new transaction [%s].", err.Error())
		return nil, err
	}

	// Copy metadata from ChaincodeSpec
	tx.Metadata, err = getMetadata(chaincodeInvocation.GetChaincodeSpec(), tCert, attrs...)
	if err != nil {
		client.Errorf("Failed creating new transaction [%s].", err.Error())
		return nil, err
	}
	if nonce == nil {
		tx.Nonce, err = primitives.GetRandomNonce()
		if err != nil {
			client.Errorf("Failed creating nonce [%s].", err.Error())
			return nil, err
		}
	} else {
		// TODO: check that it is a well formed nonce
		tx.Nonce = nonce
	}

	// Handle confidentiality
	if chaincodeInvocation.ChaincodeSpec.ConfidentialityLevel == obc.ConfidentialityLevel_CONFIDENTIAL {
		// 1. set confidentiality level and nonce
		tx.ConfidentialityLevel = obc.ConfidentialityLevel_CONFIDENTIAL

		// 2. set confidentiality protocol version
		tx.ConfidentialityProtocolVersion = client.conf.GetConfidentialityProtocolVersion()

		// 3. encrypt tx
		err = client.encryptTx(tx)
		if err != nil {
			client.Errorf("Failed encrypting payload [%s].", err.Error())
			return nil, err

		}
	}

	return tx, nil
}

func createConfidentialECertHQueryTransaction(t *testing.T) (*obc.Transaction, *obc.Transaction, error) {
	uuid := util.GenerateUUID()

	cis := &obc.ChaincodeInvocationSpec{
		ChaincodeSpec: &obc.ChaincodeSpec{
			Type:                 obc.ChaincodeSpec_GOLANG,
			ChaincodeID:          &obc.ChaincodeID{Path: "Contract001"},
			CtorMsg:              nil,
			ConfidentialityLevel: obc.ConfidentialityLevel_CONFIDENTIAL,
		},
	}

	otx, err := obc.NewChaincodeExecute(cis, uuid, obc.Transaction_CHAINCODE_QUERY)
	if err != nil {
		return nil, nil, err
	}
	handler, err := invoker.GetEnrollmentCertificateHandler()
	if err != nil {
		return nil, nil, err
	}
	txHandler, err := handler.GetTransactionHandler()
	if err != nil {
		return nil, nil, err
	}
	tx, err := txHandler.NewChaincodeQuery(cis, uuid)

	// Check binding consistency
	binding, _ := txHandler.GetBinding()
	if !reflect.DeepEqual(binding, primitives.Hash(append(handler.GetCertificate(), tx.Nonce...))) {
		t.Fatal("Binding is malformed!")
	}

	// Check confidentiality level
	if tx.ConfidentialityLevel != cis.ChaincodeSpec.ConfidentialityLevel {
		t.Fatal("Failed setting confidentiality level")
	}

	// Check metadata
	if !reflect.DeepEqual(cis.ChaincodeSpec.Metadata, tx.Metadata) {
		t.Fatal("Failed copying metadata")
	}

	return otx, tx, err
}

func createPublicQueryTransaction(t *testing.T) (*obc.Transaction, *obc.Transaction, error) {
	uuid := util.GenerateUUID()

	cis := &obc.ChaincodeInvocationSpec{
		ChaincodeSpec: &obc.ChaincodeSpec{
			Type:                 obc.ChaincodeSpec_GOLANG,
			ChaincodeID:          &obc.ChaincodeID{Path: "Contract001"},
			CtorMsg:              nil,
			ConfidentialityLevel: obc.ConfidentialityLevel_PUBLIC,
		},
	}

	otx, err := obc.NewChaincodeExecute(cis, uuid, obc.Transaction_CHAINCODE_QUERY)
	if err != nil {
		return nil, nil, err
	}
	tx, err := invoker.NewChaincodeQuery(cis, uuid)
	return otx, tx, err
}