// 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 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
}
// 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
}
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
}
// BeginTxBatch gets invoked when the next round
// of transaction-batch execution begins
func (h *Helper) BeginTxBatch(id interface{}) error {
ledger, err := ledger.GetLedger()
if err != nil {
return fmt.Errorf("Failed to get the ledger: %v", err)
}
if err := ledger.BeginTxBatch(id); err != nil {
return fmt.Errorf("Failed to begin transaction with the ledger: %v", err)
}
h.curBatch = nil // TODO, remove after issue 579
return 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
}
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}
} else {
_, ctorArgsOK := constructorMap["args"]
if !ctorArgsOK {
genesisLogger.Error("Invalid chaincode constructor args defined in genesis configuration:", constructorMap["args"])
makeGenesisError = fmt.Errorf("Invalid chaincode constructor args defined in genesis configuration: %s", constructorMap["args"])
return
}
ctorArgs, ctorArgsOK := constructorMap["args"].([]interface{})
var ctorArgsStringArray []string
if ctorArgsOK {
genesisLogger.Debug("Genesis chaincode constructor args %s", ctorArgs)
for j := 0; j < len(ctorArgs); j++ {
ctorArgsStringArray = append(ctorArgsStringArray, ctorArgs[j].(string))
}
}
spec = protos.ChaincodeSpec{Type: protos.ChaincodeSpec_Type(protos.ChaincodeSpec_Type_value[chaincodeType]), ChaincodeID: chaincodeID, CtorMsg: &protos.ChaincodeInput{Args: ctorArgsStringArray}}
}
transaction, _, deployErr := DeployLocal(context.Background(), &spec, genesisBlockExists)
if deployErr != nil {
genesisLogger.Error("Error deploying chaincode for genesis block.", deployErr)
makeGenesisError = deployErr
return
}
genesisTransactions = append(genesisTransactions, transaction)
} //for
} //else
})
return makeGenesisError
}
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
}