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utils.go
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utils.go
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/*
Copyright SecureKey Technologies Inc. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
*/
package integration
import (
"math/rand"
"os"
"testing"
"time"
"fmt"
"github.com/hyperledger/fabric-sdk-go/pkg/client/resmgmt"
"github.com/hyperledger/fabric-sdk-go/pkg/common/providers/core"
"github.com/hyperledger/fabric-sdk-go/pkg/fabsdk"
"github.com/pkg/errors"
)
const (
adminUser = "Admin"
ordererOrgName = "ordererorg"
)
// GenerateRandomID generates random ID
func GenerateRandomID() string {
return randomString(10)
}
// Utility to create random string of strlen length
func randomString(strlen int) string {
const chars = "abcdefghijklmnopqrstuvwxyz0123456789"
result := make([]byte, strlen)
for i := 0; i < strlen; i++ {
result[i] = chars[rand.Intn(len(chars))]
}
return string(result)
}
// InitializeChannel ...
func InitializeChannel(sdk *fabsdk.FabricSDK, orgID string, req resmgmt.SaveChannelRequest, targets []string) error {
joinedTargets, err := FilterTargetsJoinedChannel(sdk, orgID, req.ChannelID, targets)
if err != nil {
return errors.WithMessage(err, "checking for joined targets failed")
}
if len(joinedTargets) != len(targets) {
_, err := CreateChannel(sdk, req)
if err != nil {
return errors.Wrapf(err, "create channel failed")
}
_, err = JoinChannel(sdk, req.ChannelID, orgID)
if err != nil {
return errors.Wrapf(err, "join channel failed")
}
}
return nil
}
// FilterTargetsJoinedChannel filters targets to those that have joined the named channel.
func FilterTargetsJoinedChannel(sdk *fabsdk.FabricSDK, orgID string, channelID string, targets []string) ([]string, error) {
var joinedTargets []string
//prepare context
clientContext := sdk.Context(fabsdk.WithUser(adminUser), fabsdk.WithOrg(orgID))
rc, err := resmgmt.New(clientContext)
if err != nil {
return nil, errors.WithMessage(err, "failed getting admin user session for org")
}
for _, target := range targets {
// Check if primary peer has joined channel
alreadyJoined, err := HasPeerJoinedChannel(rc, target, channelID)
if err != nil {
return nil, errors.WithMessage(err, "failed while checking if primary peer has already joined channel")
}
if alreadyJoined {
joinedTargets = append(joinedTargets, target)
}
}
return joinedTargets, nil
}
// CreateChannel attempts to save the named channel.
func CreateChannel(sdk *fabsdk.FabricSDK, req resmgmt.SaveChannelRequest) (bool, error) {
//prepare context
clientContext := sdk.Context(fabsdk.WithUser(adminUser), fabsdk.WithOrg(ordererOrgName))
// Channel management client is responsible for managing channels (create/update)
resMgmtClient, err := resmgmt.New(clientContext)
if err != nil {
return false, errors.WithMessage(err, "Failed to create new channel management client")
}
// Create channel (or update if it already exists)
if err = resMgmtClient.SaveChannel(req); err != nil {
return false, err
}
time.Sleep(time.Second * 5)
return true, nil
}
// JoinChannel attempts to save the named channel.
func JoinChannel(sdk *fabsdk.FabricSDK, name, orgID string) (bool, error) {
//prepare context
clientContext := sdk.Context(fabsdk.WithUser(adminUser), fabsdk.WithOrg(orgID))
// Resource management client is responsible for managing resources (joining channels, install/instantiate/upgrade chaincodes)
resMgmtClient, err := resmgmt.New(clientContext)
if err != nil {
return false, errors.WithMessage(err, "Failed to create new resource management client")
}
if err = resMgmtClient.JoinChannel(name); err != nil {
return false, nil
}
return true, nil
}
// OrgTargetPeers determines peer endpoints for orgs
func OrgTargetPeers(config core.Config, orgs []string) ([]string, error) {
var peers []string
for _, org := range orgs {
peerConfig, err := config.PeersConfig(org)
if err != nil {
return nil, errors.WithMessage(err, "reading peer config failed")
}
for _, p := range peerConfig {
peers = append(peers, p.URL)
}
}
return peers, nil
}
// HasPeerJoinedChannel checks whether the peer has already joined the channel.
// It returns true if it has, false otherwise, or an error
func HasPeerJoinedChannel(client *resmgmt.Client, target string, channel string) (bool, error) {
foundChannel := false
response, err := client.QueryChannels(resmgmt.WithTargetURLs(target))
if err != nil {
return false, errors.WithMessage(err, "failed to query channel for peer")
}
for _, responseChannel := range response.Channels {
if responseChannel.ChannelId == channel {
foundChannel = true
}
}
return foundChannel, nil
}
// CleanupTestPath removes the contents of a state store.
func CleanupTestPath(t *testing.T, storePath string) {
err := os.RemoveAll(storePath)
if err != nil {
if t == nil {
panic(fmt.Sprintf("Cleaning up directory '%s' failed: %v", storePath, err))
}
t.Fatalf("Cleaning up directory '%s' failed: %v", storePath, err)
}
}
// CleanupUserData removes user data.
func CleanupUserData(t *testing.T, sdk *fabsdk.FabricSDK) {
netConfig := sdk.Config()
keyStorePath := netConfig.KeyStorePath()
credentialStorePath := netConfig.CredentialStorePath()
CleanupTestPath(t, keyStorePath)
CleanupTestPath(t, credentialStorePath)
}