<commit_before>/*
Copyright IBM Corp. 2016 All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

		 http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package chaincode

import (
	"fmt"
	"net"
	"os"
	"strconv"
	"strings"
	"sync"
	"testing"
	"time"

	"path/filepath"

	"github.com/hyperledger/fabric/core/container"
	"github.com/hyperledger/fabric/core/container/ccintf"
	"github.com/hyperledger/fabric/core/crypto"
	"github.com/hyperledger/fabric/core/db"
	"github.com/hyperledger/fabric/core/ledger"
	"github.com/hyperledger/fabric/core/util"
	"github.com/hyperledger/fabric/membersrvc/ca"
	pb "github.com/hyperledger/fabric/protos"
	"github.com/spf13/viper"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"
	"google.golang.org/grpc/grpclog"
)

// attributes to request in the batch of tcerts while deploying, invoking or querying
var attributes = []string{"company", "position"}

var testDBWrapper = db.NewTestDBWrapper()

func getNowMillis() int64 {
	nanos := time.Now().UnixNano()
	return nanos / 1000000
}

//initialize memberservices and startup
func initMemSrvc() (net.Listener, error) {
	//start clean
	finitMemSrvc(nil)

	ca.CacheConfiguration() // Cache configuration

	aca := ca.NewACA()
	eca := ca.NewECA()
	tca := ca.NewTCA(eca)
	tlsca := ca.NewTLSCA(eca)

	sockp, err := net.Listen("tcp", viper.GetString("server.port"))
	if err != nil {
		return nil, err
	}

	var opts []grpc.ServerOption
	server := grpc.NewServer(opts...)

	aca.Start(server)
	eca.Start(server)
	tca.Start(server)
	tlsca.Start(server)

	go server.Serve(sockp)

	return sockp, nil
}

//cleanup memberservice debris
func finitMemSrvc(lis net.Listener) {
	closeListenerAndSleep(lis)
	os.RemoveAll(filepath.Join(os.TempDir(), "ca"))
}

//initialize peer and start up. If security==enabled, login as vp
func initPeer() (net.Listener, error) {
	//start clean
	finitPeer(nil)
	var opts []grpc.ServerOption
	if viper.GetBool("peer.tls.enabled") {
		creds, err := credentials.NewServerTLSFromFile(viper.GetString("peer.tls.cert.file"), viper.GetString("peer.tls.key.file"))
		if err != nil {
			return nil, fmt.Errorf("Failed to generate credentials %v", err)
		}
		opts = []grpc.ServerOption{grpc.Creds(creds)}
	}
	grpcServer := grpc.NewServer(opts...)

	peerAddress := viper.GetString("peer.address")
	lis, err := net.Listen("tcp", peerAddress)
	if err != nil {
		return nil, fmt.Errorf("Error starting peer listener %s", err)
	}

	getPeerEndpoint := func() (*pb.PeerEndpoint, error) {
		return &pb.PeerEndpoint{ID: &pb.PeerID{Name: "testpeer"}, Address: peerAddress}, nil
	}

	// Install security object for peer
	var secHelper crypto.Peer
	if viper.GetBool("security.enabled") {
		enrollID := viper.GetString("security.enrollID")
		enrollSecret := viper.GetString("security.enrollSecret")
		if err = crypto.RegisterValidator(enrollID, nil, enrollID, enrollSecret); nil != err {
			return nil, err
		}
		secHelper, err = crypto.InitValidator(enrollID, nil)
		if nil != err {
			return nil, err
		}
	}

	ccStartupTimeout := time.Duration(chaincodeStartupTimeoutDefault) * time.Millisecond
	pb.RegisterChaincodeSupportServer(grpcServer, NewChaincodeSupport(DefaultChain, getPeerEndpoint, false, ccStartupTimeout, secHelper))

	go grpcServer.Serve(lis)

	return lis, nil
}

func finitPeer(lis net.Listener) {
	closeListenerAndSleep(lis)
	os.RemoveAll(filepath.Join(os.TempDir(), "hyperledger"))
}

// Build a chaincode.
func getDeploymentSpec(context context.Context, spec *pb.ChaincodeSpec) (*pb.ChaincodeDeploymentSpec, error) {
	fmt.Printf("getting deployment spec for chaincode spec: %v\n", spec)
	codePackageBytes, err := container.GetChaincodePackageBytes(spec)
	if err != nil {
		return nil, err
	}
	chaincodeDeploymentSpec := &pb.ChaincodeDeploymentSpec{ChaincodeSpec: spec, CodePackage: codePackageBytes}
	return chaincodeDeploymentSpec, nil
}

func createDeployTransaction(dspec *pb.ChaincodeDeploymentSpec, uuid string) (*pb.Transaction, error) {
	var tx *pb.Transaction
	var err error
	var sec crypto.Client
	if dspec.ChaincodeSpec.SecureContext != "" {
		sec, err = crypto.InitClient(dspec.ChaincodeSpec.SecureContext, nil)
		defer crypto.CloseClient(sec)

		if nil != err {
			return nil, err
		}

		tx, err = sec.NewChaincodeDeployTransaction(dspec, uuid, attributes...)
		if nil != err {
			return nil, err
		}
	} else {
		tx, err = pb.NewChaincodeDeployTransaction(dspec, uuid)
		if err != nil {
			return nil, fmt.Errorf("Error deploying chaincode: %s ", 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, attributes...)
		} else {
			tx, err = sec.NewChaincodeQuery(spec, uuid, attributes...)
		}
		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
}

// 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 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
}

// 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
	if typ == pb.Transaction_CHAINCODE_QUERY {
		transaction, err = createTransaction(false, chaincodeInvocationSpec, uuid)
	} else {
		transaction, err = createTransaction(true, chaincodeInvocationSpec, uuid)
	}
	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 = Execute(ctx, GetChain(DefaultChain), transaction)
	} else {
		ledger, _ := ledger.GetLedger()
		ledger.BeginTxBatch("1")
		retval, ccevt, execErr = Execute(ctx, GetChain(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 closeListenerAndSleep(l net.Listener) {
	if l != nil {
		l.Close()
		time.Sleep(2 * time.Second)
	}
}

func executeDeployTransaction(t *testing.T, url string) {
	var opts []grpc.ServerOption
	if viper.GetBool("peer.tls.enabled") {
		creds, err := credentials.NewServerTLSFromFile(viper.GetString("peer.tls.cert.file"), viper.GetString("peer.tls.key.file"))
		if err != nil {
			grpclog.Fatalf("Failed to generate credentials %v", err)
		}
		opts = []grpc.ServerOption{grpc.Creds(creds)}
	}
	grpcServer := grpc.NewServer(opts...)
	viper.Set("peer.fileSystemPath", "/var/hyperledger/test/tmpdb")

	//lis, err := net.Listen("tcp", viper.GetString("peer.address"))

	//use a different address than what we usually use for "peer"
	//we override the peerAddress set in chaincode_support.go
	peerAddress := "0.0.0.0:21212"
	lis, err := net.Listen("tcp", peerAddress)
	if err != nil {
		t.Fail()
		t.Logf("Error starting peer listener %s", err)
		return
	}

	getPeerEndpoint := func() (*pb.PeerEndpoint, error) {
		return &pb.PeerEndpoint{ID: &pb.PeerID{Name: "testpeer"}, Address: peerAddress}, nil
	}

	ccStartupTimeout := time.Duration(chaincodeStartupTimeoutDefault) * time.Millisecond
	pb.RegisterChaincodeSupportServer(grpcServer, NewChaincodeSupport(DefaultChain, getPeerEndpoint, false, ccStartupTimeout, nil))

	go grpcServer.Serve(lis)

	var ctxt = context.Background()

	f := "init"
	args := util.ToChaincodeArgs(f, "a", "100", "b", "200")
	spec := &pb.ChaincodeSpec{Type: 1, ChaincodeID: &pb.ChaincodeID{Path: url}, CtorMsg: &pb.ChaincodeInput{Args: args}}
	_, err = deploy(ctxt, spec)
	chaincodeID := spec.ChaincodeID.Name
	if err != nil {
		GetChain(DefaultChain).Stop(ctxt, &pb.ChaincodeDeploymentSpec{ChaincodeSpec: spec})
		closeListenerAndSleep(lis)
		t.Fail()
		t.Logf("Error deploying <%s>: %s", chaincodeID, err)
		return
	}

	GetChain(DefaultChain).Stop(ctxt, &pb.ChaincodeDeploymentSpec{ChaincodeSpec: spec})
	closeListenerAndSleep(lis)
}

// Test deploy of a transaction
func TestExecuteDeployTransaction(t *testing.T) {
	testDBWrapper.CleanDB(t)
	executeDeployTransaction(t, "github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example01")
}

// Test deploy of a transaction with a GOPATH with multiple elements
func TestGopathExecuteDeployTransaction(t *testing.T) {
	// add a trailing slash to GOPATH
	// and a couple of elements - it doesn't matter what they are
	os.Setenv("GOPATH", os.Getenv("GOPATH")+string(os.PathSeparator)+string(os.PathListSeparator)+"/tmp/foo"+string(os.PathListSeparator)+"/tmp/bar")
	fmt.Printf("set GOPATH to: \"%s\"\n", os.Getenv("GOPATH"))
	testDBWrapper.CleanDB(t)
	executeDeployTransaction(t, "github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example01")
}

// Test deploy of a transaction with a chaincode over HTTP.
func TestHTTPExecuteDeployTransaction(t *testing.T) {
	// The chaincode used here cannot be from the fabric repo
	// itself or it won't be downloaded because it will be found
	// in GOPATH, which would defeat the test
	testDBWrapper.CleanDB(t)
	executeDeployTransaction(t, "http://github.com/hyperledger/fabric-test-resources/examples/chaincode/go/chaincode_example01")
}

// Check the correctness of the final state after transaction execution.
func checkFinalState(uuid string, chaincodeID string) error {
	// Check the state in the ledger
	ledgerObj, ledgerErr := ledger.GetLedger()
	if ledgerErr != nil {<commit_msg>Temporary fix for failing CI for master branch<commit_after>/*
Copyright IBM Corp. 2016 All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

		 http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package chaincode

import (
	"fmt"
	"net"
	"os"
	"strconv"
	"strings"
	"sync"
	"testing"
	"time"

	"path/filepath"

	"github.com/hyperledger/fabric/core/container"
	"github.com/hyperledger/fabric/core/container/ccintf"
	"github.com/hyperledger/fabric/core/crypto"
	"github.com/hyperledger/fabric/core/db"
	"github.com/hyperledger/fabric/core/ledger"
	"github.com/hyperledger/fabric/core/util"
	"github.com/hyperledger/fabric/membersrvc/ca"
	pb "github.com/hyperledger/fabric/protos"
	"github.com/spf13/viper"
	"golang.org/x/net/context"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"
	"google.golang.org/grpc/grpclog"
)

// attributes to request in the batch of tcerts while deploying, invoking or querying
var attributes = []string{"company", "position"}

var testDBWrapper = db.NewTestDBWrapper()

func getNowMillis() int64 {
	nanos := time.Now().UnixNano()
	return nanos / 1000000
}

//initialize memberservices and startup
func initMemSrvc() (net.Listener, error) {
	//start clean
	finitMemSrvc(nil)

	ca.CacheConfiguration() // Cache configuration

	aca := ca.NewACA()
	eca := ca.NewECA()
	tca := ca.NewTCA(eca)
	tlsca := ca.NewTLSCA(eca)

	sockp, err := net.Listen("tcp", viper.GetString("server.port"))
	if err != nil {
		return nil, err
	}

	var opts []grpc.ServerOption
	server := grpc.NewServer(opts...)

	aca.Start(server)
	eca.Start(server)
	tca.Start(server)
	tlsca.Start(server)

	go server.Serve(sockp)

	return sockp, nil
}

//cleanup memberservice debris
func finitMemSrvc(lis net.Listener) {
	closeListenerAndSleep(lis)
	os.RemoveAll(filepath.Join(os.TempDir(), "ca"))
}

//initialize peer and start up. If security==enabled, login as vp
func initPeer() (net.Listener, error) {
	//start clean
	finitPeer(nil)
	var opts []grpc.ServerOption
	if viper.GetBool("peer.tls.enabled") {
		creds, err := credentials.NewServerTLSFromFile(viper.GetString("peer.tls.cert.file"), viper.GetString("peer.tls.key.file"))
		if err != nil {
			return nil, fmt.Errorf("Failed to generate credentials %v", err)
		}
		opts = []grpc.ServerOption{grpc.Creds(creds)}
	}
	grpcServer := grpc.NewServer(opts...)

	peerAddress := viper.GetString("peer.address")
	lis, err := net.Listen("tcp", peerAddress)
	if err != nil {
		return nil, fmt.Errorf("Error starting peer listener %s", err)
	}

	getPeerEndpoint := func() (*pb.PeerEndpoint, error) {
		return &pb.PeerEndpoint{ID: &pb.PeerID{Name: "testpeer"}, Address: peerAddress}, nil
	}

	// Install security object for peer
	var secHelper crypto.Peer
	if viper.GetBool("security.enabled") {
		enrollID := viper.GetString("security.enrollID")
		enrollSecret := viper.GetString("security.enrollSecret")
		if err = crypto.RegisterValidator(enrollID, nil, enrollID, enrollSecret); nil != err {
			return nil, err
		}
		secHelper, err = crypto.InitValidator(enrollID, nil)
		if nil != err {
			return nil, err
		}
	}

	ccStartupTimeout := time.Duration(chaincodeStartupTimeoutDefault) * time.Millisecond
	pb.RegisterChaincodeSupportServer(grpcServer, NewChaincodeSupport(DefaultChain, getPeerEndpoint, false, ccStartupTimeout, secHelper))

	go grpcServer.Serve(lis)

	return lis, nil
}

func finitPeer(lis net.Listener) {
	closeListenerAndSleep(lis)
	os.RemoveAll(filepath.Join(os.TempDir(), "hyperledger"))
}

// Build a chaincode.
func getDeploymentSpec(context context.Context, spec *pb.ChaincodeSpec) (*pb.ChaincodeDeploymentSpec, error) {
	fmt.Printf("getting deployment spec for chaincode spec: %v\n", spec)
	codePackageBytes, err := container.GetChaincodePackageBytes(spec)
	if err != nil {
		return nil, err
	}
	chaincodeDeploymentSpec := &pb.ChaincodeDeploymentSpec{ChaincodeSpec: spec, CodePackage: codePackageBytes}
	return chaincodeDeploymentSpec, nil
}

func createDeployTransaction(dspec *pb.ChaincodeDeploymentSpec, uuid string) (*pb.Transaction, error) {
	var tx *pb.Transaction
	var err error
	var sec crypto.Client
	if dspec.ChaincodeSpec.SecureContext != "" {
		sec, err = crypto.InitClient(dspec.ChaincodeSpec.SecureContext, nil)
		defer crypto.CloseClient(sec)

		if nil != err {
			return nil, err
		}

		tx, err = sec.NewChaincodeDeployTransaction(dspec, uuid, attributes...)
		if nil != err {
			return nil, err
		}
	} else {
		tx, err = pb.NewChaincodeDeployTransaction(dspec, uuid)
		if err != nil {
			return nil, fmt.Errorf("Error deploying chaincode: %s ", 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, attributes...)
		} else {
			tx, err = sec.NewChaincodeQuery(spec, uuid, attributes...)
		}
		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
}

// 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 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
}

// 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
	if typ == pb.Transaction_CHAINCODE_QUERY {
		transaction, err = createTransaction(false, chaincodeInvocationSpec, uuid)
	} else {
		transaction, err = createTransaction(true, chaincodeInvocationSpec, uuid)
	}
	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 = Execute(ctx, GetChain(DefaultChain), transaction)
	} else {
		ledger, _ := ledger.GetLedger()
		ledger.BeginTxBatch("1")
		retval, ccevt, execErr = Execute(ctx, GetChain(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 closeListenerAndSleep(l net.Listener) {
	if l != nil {
		l.Close()
		time.Sleep(2 * time.Second)
	}
}

func executeDeployTransaction(t *testing.T, url string) {
	var opts []grpc.ServerOption
	if viper.GetBool("peer.tls.enabled") {
		creds, err := credentials.NewServerTLSFromFile(viper.GetString("peer.tls.cert.file"), viper.GetString("peer.tls.key.file"))
		if err != nil {
			grpclog.Fatalf("Failed to generate credentials %v", err)
		}
		opts = []grpc.ServerOption{grpc.Creds(creds)}
	}
	grpcServer := grpc.NewServer(opts...)
	viper.Set("peer.fileSystemPath", "/var/hyperledger/test/tmpdb")

	//lis, err := net.Listen("tcp", viper.GetString("peer.address"))

	//use a different address than what we usually use for "peer"
	//we override the peerAddress set in chaincode_support.go
	peerAddress := "0.0.0.0:21212"
	lis, err := net.Listen("tcp", peerAddress)
	if err != nil {
		t.Fail()
		t.Logf("Error starting peer listener %s", err)
		return
	}

	getPeerEndpoint := func() (*pb.PeerEndpoint, error) {
		return &pb.PeerEndpoint{ID: &pb.PeerID{Name: "testpeer"}, Address: peerAddress}, nil
	}

	ccStartupTimeout := time.Duration(chaincodeStartupTimeoutDefault) * time.Millisecond
	pb.RegisterChaincodeSupportServer(grpcServer, NewChaincodeSupport(DefaultChain, getPeerEndpoint, false, ccStartupTimeout, nil))

	go grpcServer.Serve(lis)

	var ctxt = context.Background()

	f := "init"
	args := util.ToChaincodeArgs(f, "a", "100", "b", "200")
	spec := &pb.ChaincodeSpec{Type: 1, ChaincodeID: &pb.ChaincodeID{Path: url}, CtorMsg: &pb.ChaincodeInput{Args: args}}
	_, err = deploy(ctxt, spec)
	chaincodeID := spec.ChaincodeID.Name
	if err != nil {
		GetChain(DefaultChain).Stop(ctxt, &pb.ChaincodeDeploymentSpec{ChaincodeSpec: spec})
		closeListenerAndSleep(lis)
		t.Fail()
		t.Logf("Error deploying <%s>: %s", chaincodeID, err)
		return
	}

	GetChain(DefaultChain).Stop(ctxt, &pb.ChaincodeDeploymentSpec{ChaincodeSpec: spec})
	closeListenerAndSleep(lis)
}

// Test deploy of a transaction
func TestExecuteDeployTransaction(t *testing.T) {
	testDBWrapper.CleanDB(t)
	executeDeployTransaction(t, "github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example01")
}

// Test deploy of a transaction with a GOPATH with multiple elements
func TestGopathExecuteDeployTransaction(t *testing.T) {
	// add a trailing slash to GOPATH
	// and a couple of elements - it doesn't matter what they are
	os.Setenv("GOPATH", os.Getenv("GOPATH")+string(os.PathSeparator)+string(os.PathListSeparator)+"/tmp/foo"+string(os.PathListSeparator)+"/tmp/bar")
	fmt.Printf("set GOPATH to: \"%s\"\n", os.Getenv("GOPATH"))
	testDBWrapper.CleanDB(t)
	executeDeployTransaction(t, "github.com/hyperledger/fabric/examples/chaincode/go/chaincode_example01")
}

// Test deploy of a transaction with a chaincode over HTTP.
func TestHTTPExecuteDeployTransaction(t *testing.T) {
	// The chaincode used here cannot be from the fabric repo
	// itself or it won't be downloaded because it will be found
	// in GOPATH, which would defeat the test
	testDBWrapper.CleanDB(t)
	executeDeployTransaction(t, "http://gopkg.in/mastersingh24/fabric-test-resources.v0")
}

// Check the correctness of the final state after transaction execution.
func checkFinalState(uuid string, chaincodeID string) error {
	// Check the state in the ledger
	ledgerObj, ledgerErr := ledger.GetLedger()
	if ledgerErr != nil {
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{'dir': 'git-commits-cleaned', 'id': '7542724', 'n_tokens_mistral': 8423, 'n_tokens_neox': 8060, 'n_words': 2051}