/
velainstall.go
369 lines (311 loc) · 10.3 KB
/
velainstall.go
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package services
import (
"context"
"fmt"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"strings"
"sync"
"time"
"github.com/ghodss/yaml"
"github.com/gofrs/flock"
echo "github.com/labstack/echo/v4"
"github.com/pkg/errors"
"helm.sh/helm/v3/pkg/action"
"helm.sh/helm/v3/pkg/chart"
"helm.sh/helm/v3/pkg/chart/loader"
"helm.sh/helm/v3/pkg/cli"
"helm.sh/helm/v3/pkg/cli/values"
"helm.sh/helm/v3/pkg/downloader"
"helm.sh/helm/v3/pkg/getter"
"helm.sh/helm/v3/pkg/release"
"helm.sh/helm/v3/pkg/repo"
"helm.sh/helm/v3/pkg/storage/driver"
appv1 "k8s.io/api/apps/v1"
v1 "k8s.io/api/core/v1"
apiErrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/cli-runtime/pkg/genericclioptions"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
"sigs.k8s.io/controller-runtime/pkg/client"
"github.com/oam-dev/velacp/pkg/log"
"github.com/oam-dev/velacp/pkg/proto/model"
"github.com/oam-dev/velacp/pkg/rest/apis"
"github.com/oam-dev/velacp/pkg/runtime"
)
type VelaInstallService struct {
k8sClient client.Client
}
func NewVelaInstallService(client client.Client) *VelaInstallService {
return &VelaInstallService{
k8sClient: client,
}
}
func (s *VelaInstallService) InstallVela(c echo.Context) error {
clusterName := c.Param("cluster")
helmRepo := c.QueryParam("helmrepo")
installVersion := c.QueryParam("version")
if clusterName == "" || helmRepo == "" {
return fmt.Errorf("get params err: cluster: %s, helmrepo: %s", clusterName, helmRepo)
}
var cm v1.ConfigMap
err := s.k8sClient.Get(context.Background(), client.ObjectKey{Namespace: DefaultUINamespace, Name: clusterName}, &cm)
if err != nil {
return err
}
settings := cli.New()
repoName := "kubevela"
if err := AddHelmRepo(repoName, helmRepo, settings); err != nil {
return err
}
if err := UpdateHelmRepo(settings); err != nil {
return err
}
version, err := InstallHelmChart("kubevela", repoName, "vela-core", installVersion, cm.Data["Kubeconfig"], settings)
if err != nil {
return err
}
return c.JSON(http.StatusOK, model.InstallVelaResponse{
Version: fmt.Sprintf("%d", version),
})
}
func (s *VelaInstallService) IsVelaInstalled(c echo.Context) error {
var clusterName string
if clusterName = c.Param("cluster"); clusterName == "" {
return fmt.Errorf("get param error: cluster: %s", clusterName)
}
var cm v1.ConfigMap
err := s.k8sClient.Get(context.Background(), client.ObjectKey{Namespace: DefaultUINamespace, Name: clusterName}, &cm)
if err != nil {
return err
}
var (
velaNamespace = "vela-system"
velaName = "kubevela"
kubeConf = cm.Data["Kubeconfig"]
)
helmExist, err := CheckVelaHelmChartExist(kubeConf, velaNamespace, velaName)
if err != nil {
return err
}
if helmExist {
return c.JSON(http.StatusOK, apis.ClusterVelaStatus{Installed: true})
}
velaControllerExist := false
if velaControllerExist, err = CheckVelaControllerExist(kubeConf); err != nil {
return err
}
return c.JSON(http.StatusOK, apis.ClusterVelaStatus{Installed: velaControllerExist})
}
// AddHelmRepo adds repo with given name and url
func AddHelmRepo(name, url string, settings *cli.EnvSettings) error {
f := "AddHelmRepo"
repoFile := settings.RepositoryConfig
err := os.MkdirAll(filepath.Dir(repoFile), os.ModePerm)
if err != nil && !os.IsExist(err) {
return fmt.Errorf("%s, make repo dir err: %s", f, err.Error())
}
// Acquire a file lock for process synchronization
fileLock := flock.New(strings.Replace(repoFile, filepath.Ext(repoFile), ".lock", 1))
lockCtx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()
locked, err := fileLock.TryLockContext(lockCtx, time.Second)
if err == nil && locked {
//nolint:errcheck
defer fileLock.Unlock()
}
if err != nil {
return fmt.Errorf("%s, lock file err: %s", f, err.Error())
}
b, err := ioutil.ReadFile(repoFile)
if err != nil && !os.IsNotExist(err) {
return fmt.Errorf("%s, read file err: %s", f, err.Error())
}
var file repo.File
if err := yaml.Unmarshal(b, &file); err != nil {
return fmt.Errorf("%s, unmarshal err: %s", f, err.Error())
}
if file.Has(name) {
log.Logger.Infof("repository name (%s) already exists\n", name)
return nil
}
c := repo.Entry{
Name: name,
URL: url,
}
r, err := repo.NewChartRepository(&c, getter.All(settings))
if err != nil {
return fmt.Errorf("%s, new chart repo err: %s", f, err.Error())
}
if _, err := r.DownloadIndexFile(); err != nil {
return fmt.Errorf("looks like %q is not a valid chart repository or cannot be reached, err: %s", url, err.Error())
}
file.Update(&c)
if err := file.WriteFile(repoFile, 0644); err != nil {
return fmt.Errorf("%s, write file err: %s", f, err.Error())
}
log.Logger.Infof("%q has been added to repositories\n", name)
return nil
}
// UpdateHelmRepo updates charts for all helm repos
func UpdateHelmRepo(settings *cli.EnvSettings) error {
f := "UpdateHelmRepo"
repoFile := settings.RepositoryConfig
file, err := repo.LoadFile(repoFile)
if os.IsNotExist(errors.Cause(err)) || len(file.Repositories) == 0 {
return errors.New("no repositories found. You must add one before updating")
}
var repos []*repo.ChartRepository
for _, cfg := range file.Repositories {
r, err := repo.NewChartRepository(cfg, getter.All(settings))
if err != nil {
return fmt.Errorf("%s, new chart repo err: %s", f, err.Error())
}
repos = append(repos, r)
}
log.Logger.Infof("Hang tight while we grab the latest from your chart repositories...")
var wg sync.WaitGroup
for _, re := range repos {
wg.Add(1)
go func(re *repo.ChartRepository) {
defer wg.Done()
if _, err := re.DownloadIndexFile(); err != nil {
log.Logger.Infof("...Unable to get an update from the %q chart repository (%s):\n\t%s", re.Config.Name, re.Config.URL, err)
} else {
log.Logger.Infof("...Successfully got an update from the %q chart repository", re.Config.Name)
}
}(re)
}
wg.Wait()
log.Logger.Infof("Update repo complete")
return nil
}
func InstallHelmChart(name, repo, chart, version string, kubeConfig string, settings *cli.EnvSettings) (int, error) {
f := "InstallHelmChart"
cli, err := runtime.GetClient([]byte(kubeConfig))
if err != nil {
return 0, err
}
velaNamespace := &v1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: "vela-system"}}
if err := cli.Create(context.TODO(), velaNamespace); err != nil && !apiErrors.IsAlreadyExists(err) {
return 0, fmt.Errorf("create vela namespace error: %v", err)
}
config, err := clientcmd.RESTConfigFromKubeConfig([]byte(kubeConfig))
if err != nil {
return 0, fmt.Errorf("get restconfig from kubeconfig bytes failed : %v", err)
}
actionConfig, err := getActionConfig("vela-system", config)
if err != nil {
return 0, fmt.Errorf("get action config failed : %v", err)
}
client := action.NewInstall(actionConfig)
client.Version = version
if client.Version == "" && client.Devel {
client.Version = ">0.0.0-0"
}
client.ReleaseName = name
cp, err := client.ChartPathOptions.LocateChart(fmt.Sprintf("%s/%s", repo, chart), settings)
if err != nil {
return 0, fmt.Errorf("%s, locate chart err: %s", f, err.Error())
}
p := getter.All(settings)
valueOpts := &values.Options{}
vals, err := valueOpts.MergeValues(p)
if err != nil {
return 0, fmt.Errorf("%s, merge values err: %s", f, err.Error())
}
// Check chart dependencies to make sure all are present in /charts
chartRequested, err := loader.Load(cp)
if err != nil {
return 0, fmt.Errorf("%s, locate chart err: %s", f, err.Error())
}
validInstallableChart, err := isChartInstallable(chartRequested)
if !validInstallableChart {
return 0, err
}
if req := chartRequested.Metadata.Dependencies; req != nil {
// If CheckDependencies returns an error, have unfulfilled dependencies.
if err := action.CheckDependencies(chartRequested, req); err != nil {
if client.DependencyUpdate {
man := &downloader.Manager{
Out: os.Stdout,
ChartPath: cp,
Keyring: client.ChartPathOptions.Keyring,
SkipUpdate: false,
Getters: p,
RepositoryConfig: settings.RepositoryConfig,
RepositoryCache: settings.RepositoryCache,
}
if err := man.Update(); err != nil {
return 0, fmt.Errorf("%s, dependency update err: %s", f, err.Error())
}
}
}
}
client.Namespace = settings.Namespace()
release, err := client.Run(chartRequested, vals)
if err != nil {
return 0, fmt.Errorf("%s, exec err: %s", f, err.Error())
}
log.Logger.Infof("install complete")
return release.Version, nil
}
func CheckVelaControllerExist(kubeConfig string) (bool, error) {
k8sCli, err := runtime.GetClient([]byte(kubeConfig))
if err != nil {
return false, err
}
objectKey := client.ObjectKey{Namespace: "vela-system", Name: "kubevela-vela-core"}
if err := k8sCli.Get(context.TODO(), objectKey, &appv1.Deployment{}); err != nil {
if apiErrors.IsNotFound(err) {
return false, nil
}
return false, err
}
return true, nil
}
func CheckVelaHelmChartExist(kubeConfig string, namespace string, name string) (bool, error) {
rel, err := GetHelmChartRelease(kubeConfig, namespace, name)
if err != nil && !errors.Is(err, driver.ErrReleaseNotFound) {
return false, err
}
return rel != nil, nil
}
func GetHelmChartRelease(kubeConfig string, namespace string, name string) (*release.Release, error) {
config, err := clientcmd.RESTConfigFromKubeConfig([]byte(kubeConfig))
if err != nil {
return nil, fmt.Errorf("build restConfig error: %v", err)
}
actionConfig, err := getActionConfig(namespace, config)
if err != nil {
return nil, err
}
helmCli := action.NewStatus(actionConfig)
rel, err := helmCli.Run(name)
if err != nil {
return nil, err
}
return rel, nil
}
func getActionConfig(namespace string, config *rest.Config) (*action.Configuration, error) {
actionConfig := new(action.Configuration)
var kubeConfig = genericclioptions.NewConfigFlags(false)
kubeConfig.APIServer = &config.Host
kubeConfig.BearerToken = &config.BearerToken
kubeConfig.CAFile = &config.CAFile
kubeConfig.Namespace = &namespace
return actionConfig, actionConfig.Init(kubeConfig, namespace, "", loggerFunc)
}
func isChartInstallable(ch *chart.Chart) (bool, error) {
switch ch.Metadata.Type {
case "", "application":
return true, nil
}
return false, errors.Errorf("%s charts are not installable", ch.Metadata.Type)
}
func loggerFunc(format string, v ...interface{}) {
log.Logger.Infof(format, v...)
}