Choosing identity dynamically to call transactions

.github/workflows/tests.yml

@@ -19,7 +19,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.18      
+        go-version: 1.21  
 
     - name: Build
       run: go build -v github.com/hyperledger-labs/cc-tools-demo/chaincode

README.md

@@ -2,17 +2,17 @@
 
 ## Directory Structure
 
-- `/fabric`: Fabric network v2.2 used as a test environment
+- `/fabric`: Fabric network v2.5 used as a test environment
 - `/chaincode`: chaincode-related files
 - `/ccapi`: chaincode REST API in Golang project
 
 ## Development
 
-The `cc-tools` library has been tested in Fabric v1.4, v2.2 and v2.4 networks.
+The `cc-tools` library has been tested in Fabric v2.2, v2.4 and v2.5 networks.
 
 Dependencies for chaincode and chaincode API:
 
-- Go 1.14 or higher
+- Go 1.21 or higher
 
 Dependencies for test environment:
 

ccapi/chaincode/event.go

@@ -78,7 +78,7 @@ func HandleEvent(channelName, ccName string, event EventHandler) {
 
 func RegisterForEvents() {
 	// Get registered events on the chaincode
-	res, _, err := Invoke(os.Getenv("CHANNEL"), os.Getenv("CCNAME"), "getEvents", nil, nil)
+	res, _, err := Invoke(os.Getenv("CHANNEL"), os.Getenv("CCNAME"), "getEvents", os.Getenv("USER"), nil, nil)
 	if err != nil {
 		fmt.Println("error registering for events: ", err)
 		return

ccapi/chaincode/eventHandler.go

@@ -54,7 +54,7 @@ func (event EventHandler) Execute(ccEvent *fab.CCEvent) {
 			cc = event.Chaincode
 		}
 
-		res, _, err := Invoke(ch, cc, event.Transaction, [][]byte{ccEvent.Payload}, nil)
+		res, _, err := Invoke(ch, cc, event.Transaction, os.Getenv("USER"), [][]byte{ccEvent.Payload}, nil)
 		if err != nil {
 			fmt.Println("error invoking transaction: ", err)
 			return
@@ -86,7 +86,7 @@ func (event EventHandler) Execute(ccEvent *fab.CCEvent) {
 			txName = "runEvent"
 		}
 
-		_, _, err := Invoke(os.Getenv("CHANNEL"), os.Getenv("CCNAME"), txName, [][]byte{args}, nil)
+		_, _, err := Invoke(os.Getenv("CHANNEL"), os.Getenv("CCNAME"), txName, os.Getenv("USER"), [][]byte{args}, nil)
 		if err != nil {
 			fmt.Println("error invoking transaction: ", err)
 			return

ccapi/chaincode/invoke.go

@@ -9,9 +9,9 @@ import (
 	"github.com/hyperledger/fabric-sdk-go/pkg/common/errors/retry"
 )
 
-func Invoke(channelName, ccName, txName string, txArgs [][]byte, transientRequest []byte) (*channel.Response, int, error) {
+func Invoke(channelName, ccName, txName, user string, txArgs [][]byte, transientRequest []byte) (*channel.Response, int, error) {
 	// create channel manager
-	fabMngr, err := common.NewFabricChClient(channelName, os.Getenv("USER"), os.Getenv("ORG"))
+	fabMngr, err := common.NewFabricChClient(channelName, user, os.Getenv("ORG"))
 	if err != nil {
 		return nil, http.StatusInternalServerError, err
 	}

ccapi/chaincode/invokeGateway.go

@@ -8,7 +8,7 @@ import (
 	"github.com/pkg/errors"
 )
 
-func InvokeGateway(channelName, chaincodeName, txName, args string, transientArgs []byte, endorsingOrgs []string) ([]byte, error) {
+func InvokeGateway(channelName, chaincodeName, txName, args, user string, transientArgs []byte, endorsingOrgs []string) ([]byte, error) {
 	// Gateway endpoint
 	endpoint := os.Getenv("FABRIC_GATEWAY_ENDPOINT")
 
@@ -20,7 +20,7 @@ func InvokeGateway(channelName, chaincodeName, txName, args string, transientArg
 	defer grpcConn.Close()
 
 	// Create gateway connection
-	gw, err := common.CreateGatewayConnection(grpcConn)
+	gw, err := common.CreateGatewayConnection(grpcConn, user)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create gateway connection")
 	}

ccapi/chaincode/query.go

@@ -9,9 +9,9 @@ import (
 	"github.com/hyperledger/fabric-sdk-go/pkg/common/errors/retry"
 )
 
-func Query(channelName, ccName, txName string, txArgs [][]byte) (*channel.Response, int, error) {
+func Query(channelName, ccName, txName, user string, txArgs [][]byte) (*channel.Response, int, error) {
 	// create channel manager
-	fabMngr, err := common.NewFabricChClient(channelName, os.Getenv("USER"), os.Getenv("ORG"))
+	fabMngr, err := common.NewFabricChClient(channelName, user, os.Getenv("ORG"))
 	if err != nil {
 		return nil, http.StatusInternalServerError, err
 	}

ccapi/chaincode/queryGateway.go

@@ -7,7 +7,7 @@ import (
 	"github.com/pkg/errors"
 )
 
-func QueryGateway(channelName, chaincodeName, txName, args string) ([]byte, error) {
+func QueryGateway(channelName, chaincodeName, txName, args, user string) ([]byte, error) {
 	// Gateway endpoint
 	endpoint := os.Getenv("FABRIC_GATEWAY_ENDPOINT")
 
@@ -19,7 +19,7 @@ func QueryGateway(channelName, chaincodeName, txName, args string) ([]byte, erro
 	defer grpcConn.Close()
 
 	// Create gateway connection
-	gw, err := common.CreateGatewayConnection(grpcConn)
+	gw, err := common.CreateGatewayConnection(grpcConn, user)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to create gateway connection")
 	}

ccapi/common/gateway.go

@@ -21,8 +21,6 @@ import (
 )
 
 var (
-	gatewayId             *identity.X509Identity
-	gatewaySign           identity.Sign
 	gatewayTLSCredentials *credentials.TransportCredentials
 )
 
@@ -43,26 +41,22 @@ func CreateGrpcConnection(endpoint string) (*grpc.ClientConn, error) {
 	return grpc.Dial(endpoint, grpc.WithTransportCredentials(*gatewayTLSCredentials))
 }
 
-func CreateGatewayConnection(grpcConn *grpc.ClientConn) (*client.Gateway, error) {
-	// Check identity was created
-	if gatewayId == nil {
-		id, err := newIdentity(getSignCert(os.Getenv("USER")), GetMSPID())
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to create new identity")
-		}
-		gatewayId = id
+func CreateGatewayConnection(grpcConn *grpc.ClientConn, user string) (*client.Gateway, error) {
+	// Create identity
+	id, err := newIdentity(getSignCert(user), GetMSPID())
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to create new identity")
 	}
+	gatewayId := id
 
-	// Check sign function was created
-	if gatewaySign == nil {
-		sign, err := newSign(getSignKey(os.Getenv("USER")))
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to create new sign function")
-		}
-
-		gatewaySign = sign
+	// Create sign function
+	sign, err := newSign(getSignKey(user))
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to create new sign function")
 	}
 
+	gatewaySign := sign
+
 	// Create a Gateway connection for a specific client identity.
 	return client.Connect(
 		gatewayId,

ccapi/handlers/invoke.go

@@ -78,7 +78,12 @@ func Invoke(c *gin.Context) {
 		argList = append(argList, args)
 	}
 
-	res, status, err := chaincode.Invoke(channelName, chaincodeName, txName, argList, transientMapByte)
+	user := c.GetHeader("User")
+	if user == "" {
+		user = "Admin"
+	}
+
+	res, status, err := chaincode.Invoke(channelName, chaincodeName, txName, user, argList, transientMapByte)
 	if err != nil {
 		common.Abort(c, status, err)
 		return

ccapi/handlers/invokeGateway.go

@@ -82,7 +82,12 @@ func invokeGateway(c *gin.Context, channelName, chaincodeName string) {
 	}
 
 	// Invoke
-	result, err := chaincode.InvokeGateway(channelName, chaincodeName, txName, string(reqBytes), transientBytes, endorsers)
+	user := c.GetHeader("User")
+	if user == "" {
+		user = "Admin"
+	}
+
+	result, err := chaincode.InvokeGateway(channelName, chaincodeName, txName, string(reqBytes), user, transientBytes, endorsers)
 	if err != nil {
 		err, status := common.ParseError(err)
 		common.Abort(c, status, err)

ccapi/handlers/invokeV1.go

@@ -80,7 +80,12 @@ func InvokeV1(c *gin.Context) {
 		argList = append(argList, args)
 	}
 
-	res, status, err := chaincode.Invoke(channelName, chaincodeName, txName, argList, transientMapByte)
+	user := c.GetHeader("User")
+	if user == "" {
+		user = "Admin"
+	}
+
+	res, status, err := chaincode.Invoke(channelName, chaincodeName, txName, user, argList, transientMapByte)
 	if err != nil {
 		common.Abort(c, status, err)
 		return

ccapi/handlers/query.go

@@ -38,7 +38,12 @@ func Query(c *gin.Context) {
 		argList = append(argList, args)
 	}
 
-	res, status, err := chaincode.Query(channelName, chaincodeName, txName, argList)
+	user := c.GetHeader("User")
+	if user == "" {
+		user = "Admin"
+	}
+
+	res, status, err := chaincode.Query(channelName, chaincodeName, txName, user, argList)
 	if err != nil {
 		common.Abort(c, status, err)
 		return

ccapi/handlers/queryGateway.go

@@ -48,7 +48,12 @@ func queryGateway(c *gin.Context, channelName, chaincodeName string) {
 	txName := c.Param("txname")
 
 	// Query
-	result, err := chaincode.QueryGateway(channelName, chaincodeName, txName, string(args))
+	user := c.GetHeader("User")
+	if user == "" {
+		user = "Admin"
+	}
+
+	result, err := chaincode.QueryGateway(channelName, chaincodeName, txName, string(args), user)
 	if err != nil {
 		err, status := common.ParseError(err)
 		common.Abort(c, status, err)

ccapi/handlers/queryV1.go

@@ -39,7 +39,12 @@ func QueryV1(c *gin.Context) {
 		argList = append(argList, args)
 	}
 
-	res, status, err := chaincode.Query(channelName, chaincodeName, txName, argList)
+	user := c.GetHeader("User")
+	if user == "" {
+		user = "Admin"
+	}
+
+	res, status, err := chaincode.Query(channelName, chaincodeName, txName, user, argList)
 	if err != nil {
 		common.Abort(c, status, err)
 		return

chaincode/go.mod

@@ -1,23 +1,44 @@
 module github.com/hyperledger-labs/cc-tools-demo/chaincode
 
-go 1.13
+go 1.21
 
 // replace github.com/hyperledger-labs/cc-tools => ../../cc-tools
 
 require (
 	github.com/cucumber/godog v0.12.5
-	github.com/hyperledger-labs/cc-tools v0.0.0-20230925111202-1b51d7cd3cc5
+	github.com/hyperledger-labs/cc-tools v0.0.0-20240509203838-10894c139aba
 	github.com/hyperledger/fabric-chaincode-go v0.0.0-20210603161043-af0e3898842a
 	github.com/hyperledger/fabric-protos-go v0.0.0-20210528200356-82833ecdac31
+)
+
+require (
+	github.com/cucumber/gherkin-go/v19 v19.0.3 // indirect
+	github.com/cucumber/messages-go/v16 v16.0.1 // indirect
+	github.com/gofrs/uuid v4.0.0+incompatible // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/hashicorp/go-immutable-radix v1.3.0 // indirect
+	github.com/hashicorp/go-memdb v1.3.0 // indirect
+	github.com/hashicorp/golang-lru v0.5.4 // indirect
+	github.com/hyperledger/fabric v2.1.1+incompatible // indirect
+	github.com/miekg/pkcs11 v1.0.3 // indirect
 	github.com/mitchellh/mapstructure v1.3.2 // indirect
 	github.com/pelletier/go-toml v1.8.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/spf13/afero v1.3.1 // indirect
 	github.com/spf13/cast v1.3.1 // indirect
 	github.com/spf13/jwalterweatherman v1.1.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/stretchr/testify v1.8.0 // indirect
-	golang.org/x/crypto v0.0.0-20210920023735-84f357641f63 // indirect
-	golang.org/x/net v0.0.0-20210917221730-978cfadd31cf // indirect
-	golang.org/x/sys v0.0.0-20210806184541-e5e7981a1069 // indirect
-	golang.org/x/text v0.3.7 // indirect
-	google.golang.org/protobuf v1.28.0 // indirect
+	github.com/sykesm/zap-logfmt v0.0.4 // indirect
+	go.uber.org/atomic v1.6.0 // indirect
+	go.uber.org/multierr v1.5.0 // indirect
+	go.uber.org/zap v1.16.0 // indirect
+	golang.org/x/crypto v0.21.0 // indirect
+	golang.org/x/net v0.23.0 // indirect
+	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	google.golang.org/genproto v0.0.0-20230410155749-daa745c078e1 // indirect
+	google.golang.org/grpc v1.56.3 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
 )