[FAB-4890] Fabric Txn API and removed utils

Change-Id: I07d55a38e59107cef0ab30925327113b15e3d686
Signed-off-by: Emir Heidinger <emir.heidinger@securekey.com>

Author: emirsh

api/channel.go

@@ -25,6 +25,7 @@ import (
 type Channel interface {
 	GetName() string
 	Initialize(data []byte) error
+	IsInitialized() bool
 	IsSecurityEnabled() bool
 	GetTCertBatchSize() int
 	SetTCertBatchSize(batchSize int)

fabric-txn/admin/transactionconfig.go

@@ -0,0 +1,228 @@
+/*
+Copyright SecureKey Technologies Inc. All Rights Reserved.
+
+SPDX-License-Identifier: Apache-2.0
+*/
+
+package admin
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"time"
+
+	api "github.com/hyperledger/fabric-sdk-go/api"
+	internal "github.com/hyperledger/fabric-sdk-go/fabric-txn/internal"
+	"github.com/hyperledger/fabric/protos/common"
+	"github.com/op/go-logging"
+)
+
+var logger = logging.MustGetLogger("fabric_sdk_go")
+var origGoPath = os.Getenv("GOPATH")
+
+// SendInstallCC  Sends an install proposal to one or more endorsing peers.
+func SendInstallCC(client api.FabricClient, chainCodeID string, chainCodePath string,
+	chainCodeVersion string, chaincodePackage []byte, targets []api.Peer, deployPath string) error {
+
+	changeGOPATHToDeploy(deployPath)
+	transactionProposalResponse, _, err := client.InstallChaincode(chainCodeID, chainCodePath, chainCodeVersion, chaincodePackage, targets)
+	resetGOPATH()
+	if err != nil {
+		return fmt.Errorf("InstallChaincode returned error: %v", err)
+	}
+	for _, v := range transactionProposalResponse {
+		if v.Err != nil {
+			return fmt.Errorf("InstallChaincode Endorser %s returned error: %v", v.Endorser, v.Err)
+		}
+		logger.Debugf("InstallChaincode Endorser '%s' returned ProposalResponse status:%v\n", v.Endorser, v.Status)
+	}
+
+	return nil
+}
+
+// SendInstantiateCC Sends instantiate CC proposal to one or more endorsing peers
+func SendInstantiateCC(channel api.Channel, chainCodeID string, channelID string, args []string,
+	chaincodePath string, chaincodeVersion string, targets []api.Peer, eventHub api.EventHub) error {
+
+	transactionProposalResponse, txID, err := channel.SendInstantiateProposal(chainCodeID,
+		channelID, args, chaincodePath, chaincodeVersion, targets)
+	if err != nil {
+		return fmt.Errorf("SendInstantiateProposal returned error: %v", err)
+	}
+
+	for _, v := range transactionProposalResponse {
+		if v.Err != nil {
+			return fmt.Errorf("SendInstantiateProposal Endorser %s returned error: %v", v.Endorser, v.Err)
+		}
+		logger.Debug("SendInstantiateProposal Endorser '%s' returned ProposalResponse status:%v\n", v.Endorser, v.Status)
+	}
+
+	// Register for commit event
+	done, fail := internal.RegisterTxEvent(txID, eventHub)
+
+	if _, err = internal.CreateAndSendTransaction(channel, transactionProposalResponse); err != nil {
+		return fmt.Errorf("CreateTransaction returned error: %v", err)
+	}
+
+	select {
+	case <-done:
+	case <-fail:
+		return fmt.Errorf("instantiateCC Error received from eventhub for txid(%s) error(%v)", txID, fail)
+	case <-time.After(time.Second * 30):
+		return fmt.Errorf("instantiateCC Didn't receive block event for txid(%s)", txID)
+	}
+	return nil
+}
+
+// CreateChannel ...
+func CreateChannel(client api.FabricClient, ordererUser api.User, orgUser api.User, channel api.Channel, channelConfig string) error {
+	// Check if primary peer has joined this channel
+	var foundChannel bool
+	primaryPeer := channel.GetPrimaryPeer()
+	client.SetUserContext(orgUser)
+	response, err := client.QueryChannels(primaryPeer)
+	if err != nil {
+		return fmt.Errorf("Error querying channels for primary peer: %s", err)
+	}
+	for _, responseChannel := range response.Channels {
+		if responseChannel.ChannelId == channel.GetName() {
+			foundChannel = true
+		}
+	}
+
+	if foundChannel {
+		// There's no need to create a channel, initialize the channel from the orderer and return
+		if err = channel.Initialize(nil); err != nil {
+			return fmt.Errorf("Error initializing channel: %v", err)
+		}
+		return nil
+	}
+
+	logger.Debugf("***** Creating channel: %s *****\n", channel.GetName())
+
+	configTx, err := ioutil.ReadFile(channelConfig)
+	if err != nil {
+		return fmt.Errorf("Error reading config file: %v", err)
+	}
+
+	config, err := client.ExtractChannelConfig(configTx)
+	if err != nil {
+		return fmt.Errorf("Error extracting channel config: %v", err)
+	}
+
+	configSignature, err := client.SignChannelConfig(config)
+	if err != nil {
+		return fmt.Errorf("Error signing configuration: %v", err)
+	}
+
+	var configSignatures []*common.ConfigSignature
+	configSignatures = append(configSignatures, configSignature)
+
+	creator, err := client.GetIdentity()
+	if err != nil {
+		return fmt.Errorf("Error getting creator: %v", err)
+	}
+	nonce, err := internal.GenerateRandomNonce()
+	if err != nil {
+		return fmt.Errorf("Could not compute nonce: %s", err)
+	}
+	txID, err := internal.ComputeTxID(nonce, creator)
+	if err != nil {
+		return fmt.Errorf("Could not compute TxID: %s", err)
+	}
+
+	request := api.CreateChannelRequest{
+		Name:       channel.GetName(),
+		Orderer:    channel.GetOrderers()[0],
+		Config:     config,
+		Signatures: configSignatures,
+		TxID:       txID,
+		Nonce:      nonce,
+	}
+
+	client.SetUserContext(ordererUser)
+	err = client.CreateChannel(&request)
+	if err != nil {
+		return fmt.Errorf("CreateChannel returned error")
+	}
+
+	return nil
+}
+
+// JoinChannel ...
+func JoinChannel(client api.FabricClient, orgUser api.User, channel api.Channel) error {
+	// Check if primary peer has joined this channel
+	var foundChannel bool
+	primaryPeer := channel.GetPrimaryPeer()
+	client.SetUserContext(orgUser)
+	response, err := client.QueryChannels(primaryPeer)
+	if err != nil {
+		return fmt.Errorf("Error querying channels for primary peer: %s", err)
+	}
+	for _, responseChannel := range response.Channels {
+		if responseChannel.ChannelId == channel.GetName() {
+			foundChannel = true
+		}
+	}
+
+	if foundChannel {
+		// no need to join channel
+		return nil
+	}
+
+	creator, err := client.GetIdentity()
+	if err != nil {
+		return fmt.Errorf("Error getting creator: %v", err)
+	}
+
+	nonce, err := internal.GenerateRandomNonce()
+	if err != nil {
+		return fmt.Errorf("Could not compute nonce: %s", err)
+	}
+	txID, err := internal.ComputeTxID(nonce, creator)
+	if err != nil {
+		return fmt.Errorf("Could not compute TxID: %s", err)
+	}
+
+	genesisBlockRequest := &api.GenesisBlockRequest{
+		TxID:  txID,
+		Nonce: nonce,
+	}
+	genesisBlock, err := channel.GetGenesisBlock(genesisBlockRequest)
+	if err != nil {
+		return fmt.Errorf("Error getting genesis block: %v", err)
+	}
+
+	nonce, err = internal.GenerateRandomNonce()
+	if err != nil {
+		return fmt.Errorf("Could not compute nonce: %s", err)
+	}
+	txID, err = internal.ComputeTxID(nonce, creator)
+	if err != nil {
+		return fmt.Errorf("Could not compute TxID: %s", err)
+	}
+	joinChannelRequest := &api.JoinChannelRequest{
+		Targets:      channel.GetPeers(),
+		GenesisBlock: genesisBlock,
+		TxID:         txID,
+		Nonce:        nonce,
+	}
+
+	err = channel.JoinChannel(joinChannelRequest)
+	if err != nil {
+		return fmt.Errorf("Error joining channel: %s", err)
+	}
+
+	return nil
+}
+
+// ChangeGOPATHToDeploy changes go path to fixtures folder
+func changeGOPATHToDeploy(deployPath string) {
+	os.Setenv("GOPATH", deployPath)
+}
+
+// ResetGOPATH resets go path to original
+func resetGOPATH() {
+	os.Setenv("GOPATH", origGoPath)
+}