Golang ledger.CommitTxBatch函數代碼示例

// Deploy a chaincode - i.e., build and initialize.
func deploy(ctx context.Context, spec *pb.ChaincodeSpec) ([]byte, error) {
	// First build and get the deployment spec
	chaincodeDeploymentSpec, err := getDeploymentSpec(ctx, spec)
	if err != nil {
		return nil, err
	}

	tid := chaincodeDeploymentSpec.ChaincodeSpec.ChaincodeID.Name

	// Now create the Transactions message and send to Peer.
	transaction, err := createDeployTransaction(chaincodeDeploymentSpec, tid)
	if err != nil {
		return nil, fmt.Errorf("Error deploying chaincode: %s ", err)
	}

	ledger, err := ledger.GetLedger()
	if err != nil {
		return nil, fmt.Errorf("Failed to get handle to ledger: %s ", err)
	}
	ledger.BeginTxBatch("1")
	b, err := Execute(ctx, GetChain(DefaultChain), transaction)
	if err != nil {
		return nil, fmt.Errorf("Error deploying chaincode: %s", err)
	}
	ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)

	return b, err
}

// 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 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{Args: util.ToChaincodeArgs("init")},
		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
}

func whoIsTheOwner(asset string) ([]byte, error) {
	chaincodeInput := &pb.ChaincodeInput{Args: util.ToChaincodeArgs("query", 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

}

// CommitTxBatch gets invoked when the current transaction-batch needs
// to be committed. This function returns successfully iff the
// transactions details and state changes (that may have happened
// during execution of this transaction-batch) have been committed to
// permanent storage.
func (h *Helper) CommitTxBatch(id interface{}, metadata []byte) (*pb.Block, error) {
	ledger, err := ledger.GetLedger()
	if err != nil {
		return nil, fmt.Errorf("Failed to get the ledger: %v", err)
	}
	// TODO fix this one the ledger has been fixed to implement
	if err := ledger.CommitTxBatch(id, h.curBatch, h.curBatchErrs, metadata); err != nil {
		return nil, fmt.Errorf("Failed to commit transaction to the ledger: %v", err)
	}

	size := ledger.GetBlockchainSize()
	defer func() {
		h.curBatch = nil     // TODO, remove after issue 579
		h.curBatchErrs = nil // TODO, remove after issue 579
	}()

	block, err := ledger.GetBlockByNumber(size - 1)
	if err != nil {
		return nil, fmt.Errorf("Failed to get the block at the head of the chain: %v", err)
	}

	logger.Debugf("Committed block with %d transactions, intended to include %d", len(block.Transactions), len(h.curBatch))

	return block, nil
}

func transferOwnership(owner crypto.Client, ownerCert crypto.CertificateHandler, fromAttributes string,
	newOwnerCert crypto.CertificateHandler, toAttributes string, amount string) 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("role")
	if err != nil {
		return err
	}
	txHandler, err := submittingCertHandler.GetTransactionHandler()
	if err != nil {
		return err
	}

	chaincodeInput := &pb.ChaincodeInput{Args: util.ToChaincodeArgs(
		"transferOwnership",
		base64.StdEncoding.EncodeToString(ownerCert.GetCertificate()),
		fromAttributes,
		base64.StdEncoding.EncodeToString(newOwnerCert.GetCertificate()),
		toAttributes,
		amount)}

	// 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 := 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

}

// MakeGenesis creates the genesis block and adds it to the blockchain.
func MakeGenesis() error {
	once.Do(func() {
		ledger, err := ledger.GetLedger()
		if err != nil {
			makeGenesisError = err
			return
		}

		if ledger.GetBlockchainSize() == 0 {
			genesisLogger.Info("Creating genesis block.")
			if makeGenesisError = ledger.BeginTxBatch(0); makeGenesisError == nil {
				makeGenesisError = ledger.CommitTxBatch(0, nil, nil, nil)
			}
		}
	})
	return makeGenesisError
}

func deploy2(ctx context.Context, chaincodeDeploymentSpec *pb.ChaincodeDeploymentSpec) ([]byte, error) {
	tid := chaincodeDeploymentSpec.ChaincodeSpec.ChaincodeID.Name

	// Now create the Transactions message and send to Peer.
	transaction, err := createDeployTransaction(chaincodeDeploymentSpec, tid)
	if err != nil {
		return nil, fmt.Errorf("Error deploying chaincode: %s ", err)
	}

	ledger, err := ledger.GetLedger()
	ledger.BeginTxBatch("1")
	b, _, err := Execute(ctx, GetChain(DefaultChain), transaction)
	if err != nil {
		return nil, fmt.Errorf("Error deploying chaincode: %s", err)
	}
	ledger.CommitTxBatch("1", []*pb.Transaction{transaction}, nil, nil)

	return b, err
}

// CommitTxBatch gets invoked when the current transaction-batch needs
// to be committed. This function returns successfully iff the
// transactions details and state changes (that may have happened
// during execution of this transaction-batch) have been committed to
// permanent storage.
func (h *Helper) CommitTxBatch(id interface{}, metadata []byte) (*pb.Block, error) {
	ledger, err := ledger.GetLedger()
	if err != nil {
		return nil, fmt.Errorf("Failed to get the ledger: %v", err)
	}
	// TODO fix this one the ledger has been fixed to implement
	if err := ledger.CommitTxBatch(id, h.curBatch, nil, metadata); err != nil {
		return nil, fmt.Errorf("Failed to commit transaction to the ledger: %v", err)
	}

	size := ledger.GetBlockchainSize()
	h.curBatch = nil // TODO, remove after issue 579

	block, err := ledger.GetBlockByNumber(size - 1)
	if err != nil {
		return nil, fmt.Errorf("Failed to get the block at the head of the chain: %v", err)
	}

	return block, nil
}

func read(invoker crypto.Client, invokerCert crypto.CertificateHandler) ([]byte, error) {
	// Get a transaction handler to be used to submit the query transaction
	// and bind the chaincode access control logic using the binding

	submittingCertHandler, err := invoker.GetTCertificateHandlerNext()
	if err != nil {
		return nil, err
	}
	txHandler, err := submittingCertHandler.GetTransactionHandler()
	if err != nil {
		return nil, err
	}
	binding, err := txHandler.GetBinding()
	if err != nil {
		return nil, err
	}

	chaincodeInput := &pb.ChaincodeInput{Args: util.ToChaincodeArgs("read")}
	chaincodeInputRaw, err := proto.Marshal(chaincodeInput)
	if err != nil {
		return nil, err
	}

	// Access control:
	// invokerCert signs invokerCert.GetCertificate() || chaincodeInputRaw || binding to confirm his identity
	sigma, err := invokerCert.Sign(append(invokerCert.GetCertificate(), append(chaincodeInputRaw, binding...)...))
	if err != nil {
		return nil, err
	}

	rbacMetadata := RBACMetadata{invokerCert.GetCertificate(), sigma}
	rbacMetadataRaw, err := asn1.Marshal(rbacMetadata)
	if err != nil {
		return nil, err
	}

	// Prepare spec and submit
	spec := &pb.ChaincodeSpec{
		Type:                 1,
		ChaincodeID:          &pb.ChaincodeID{Name: "mycc"},
		CtorMsg:              chaincodeInput,
		Metadata:             rbacMetadataRaw,
		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.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
}

// MakeGenesis creates the genesis block based on configuration in core.yaml
// and adds it to the blockchain.
func MakeGenesis() error {
	once.Do(func() {
		ledger, err := ledger.GetLedger()
		if err != nil {
			makeGenesisError = err
			return
		}

		var genesisBlockExists bool
		if ledger.GetBlockchainSize() == 0 {
			genesisLogger.Info("Creating genesis block.")
			ledger.BeginTxBatch(0)
		} else {
			genesisBlockExists = true
		}

		var genesisTransactions []*protos.Transaction

		defer func() {
			if !genesisBlockExists && makeGenesisError == nil {
				genesisLogger.Info("Adding %d system chaincodes to the genesis block.", len(genesisTransactions))
				ledger.CommitTxBatch(0, genesisTransactions, nil, nil)
			}
		}()

		//We are disabling the validity period deployment for now, we shouldn't even allow it if it's enabled in the configuration
		allowDeployValidityPeriod := false

		if isDeploySystemChaincodeEnabled() && allowDeployValidityPeriod {
			vpTransaction, deployErr := deployUpdateValidityPeriodChaincode(genesisBlockExists)

			if deployErr != nil {
				genesisLogger.Error("Error deploying validity period system chaincode for genesis block.", deployErr)
				makeGenesisError = deployErr
				return
			}

			genesisTransactions = append(genesisTransactions, vpTransaction)
		}

		if getGenesis() == nil {
			genesisLogger.Info("No genesis block chaincodes defined.")
		} else {

			chaincodes, chaincodesOK := genesis["chaincodes"].(map[interface{}]interface{})
			if !chaincodesOK {
				genesisLogger.Info("No genesis block chaincodes defined.")
				ledger.CommitTxBatch(0, genesisTransactions, nil, nil)
				return
			}

			genesisLogger.Debug("Genesis chaincodes are %s", chaincodes)

			for i := range chaincodes {
				name := i.(string)
				genesisLogger.Debug("Chaincode %s", name)

				chaincode := chaincodes[name]
				chaincodeMap, chaincodeMapOK := chaincode.(map[interface{}]interface{})
				if !chaincodeMapOK {
					genesisLogger.Error("Invalid chaincode defined in genesis configuration:", chaincode)
					makeGenesisError = fmt.Errorf("Invalid chaincode defined in genesis configuration: %s", chaincode)
					return
				}

				path, pathOK := chaincodeMap["path"].(string)
				if !pathOK {
					genesisLogger.Error("Invalid chaincode URL defined in genesis configuration:", chaincodeMap["path"])
					makeGenesisError = fmt.Errorf("Invalid chaincode URL defined in genesis configuration: %s", chaincodeMap["path"])
					return
				}

				chaincodeType, chaincodeTypeOK := chaincodeMap["type"].(string)
				if !chaincodeTypeOK {
					genesisLogger.Error("Invalid chaincode type defined in genesis configuration:", chaincodeMap["type"])
					makeGenesisError = fmt.Errorf("Invalid chaincode type defined in genesis configuration: %s", chaincodeMap["type"])
					return
				}

				if chaincodeType == "" {
					chaincodeType = "GOLANG"
				}

				chaincodeID := &protos.ChaincodeID{Path: path, Name: name}

				genesisLogger.Debug("Genesis chaincodeID %s", chaincodeID)

				constructorMap, constructorMapOK := chaincodeMap["constructor"].(map[interface{}]interface{})
				if !constructorMapOK {
					genesisLogger.Error("Invalid chaincode constructor defined in genesis configuration:", chaincodeMap["constructor"])
					makeGenesisError = fmt.Errorf("Invalid chaincode constructor defined in genesis configuration: %s", chaincodeMap["constructor"])
					return
				}

				var spec protos.ChaincodeSpec
				if constructorMap == nil {
					genesisLogger.Debug("Genesis chaincode has no constructor.")
					spec = protos.ChaincodeSpec{Type: protos.ChaincodeSpec_Type(protos.ChaincodeSpec_Type_value[chaincodeType]), ChaincodeID: chaincodeID}
//.........這裏部分代碼省略.........

func addRole(admCert crypto.CertificateHandler, idCert crypto.CertificateHandler, role string) 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 := administrator.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: "addRole", Args: []string{string(idCert.GetCertificate()), role}}
	chaincodeInputRaw, err := proto.Marshal(chaincodeInput)
	if err != nil {
		return err
	}

	// Access control:
	// admCert signs admCert.GetCertificate() || chaincodeInputRaw || binding to confirm his identity
	sigma, err := admCert.Sign(append(admCert.GetCertificate(), append(chaincodeInputRaw, binding...)...))
	if err != nil {
		return err
	}

	rbacMetadata := RBACMetadata{admCert.GetCertificate(), sigma}
	rbacMetadataRaw, err := asn1.Marshal(rbacMetadata)
	if err != nil {
		return err
	}

	// Prepare spec and submit
	spec := &pb.ChaincodeSpec{
		Type:                 1,
		ChaincodeID:          &pb.ChaincodeID{Name: "mycc"},
		CtorMsg:              chaincodeInput,
		Metadata:             rbacMetadataRaw, // 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
}