/
cluster_use.go
183 lines (164 loc) · 4.92 KB
/
cluster_use.go
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package cmd
import (
"context"
"fmt"
"net/url"
"os"
"strconv"
flags "github.com/jessevdk/go-flags"
"github.com/mitchellh/cli"
v1auth "github.com/nerdalize/nerd/nerd/client/auth/v1"
v1authpayload "github.com/nerdalize/nerd/nerd/client/auth/v1/payload"
"github.com/nerdalize/nerd/nerd/conf"
"github.com/nerdalize/nerd/nerd/oauth"
"github.com/nerdalize/nerd/pkg/kubeconfig"
"github.com/nerdalize/nerd/pkg/populator"
"github.com/nerdalize/nerd/svc"
"github.com/pkg/errors"
)
const (
//PublicCluster is a service type we get from authentication
PublicCluster = "public-kubernetes"
)
//ClusterUse command
type ClusterUse struct {
Namespace string `long:"namespace" short:"n" description:"set a specific namespace as the default one"`
*command
}
//ClusterUseFactory creates the command
func ClusterUseFactory(ui cli.Ui) cli.CommandFactory {
cmd := &ClusterUse{}
cmd.command = createCommand(ui, cmd.Execute, cmd.Description, cmd.Usage, cmd, &ConfOpts{}, flags.None, "nerd cluster set-default")
t, ok := cmd.advancedOpts.(*ConfOpts)
if !ok {
return nil
}
t.ConfigFile = cmd.setConfig
t.SessionFile = cmd.setSession
return func() (cli.Command, error) {
return cmd, nil
}
}
//Execute runs the command
func (cmd *ClusterUse) Execute(args []string) (err error) {
// TODO move this part to another func
env := os.Getenv("NERD_ENV")
if env == "staging" {
cmd.config = conf.StagingDefaults()
} else if env == "dev" {
cmd.config = conf.DevDefaults(os.Getenv("NERD_API_ENDPOINT"))
}
if len(args) > 1 {
return errShowUsage(fmt.Sprintf(MessageTooManyArguments, 1, ""))
} else if len(args) < 1 {
return errShowUsage(fmt.Sprintf(MessageNotEnoughArguments, 1, ""))
}
ctx := context.Background()
ctx, cancel := context.WithTimeout(ctx, cmd.globalOpts.KubeOpts.Timeout)
defer cancel()
authbase, err := url.Parse(cmd.config.Auth.APIEndpoint)
if err != nil {
return errors.Wrapf(err, "auth endpoint '%v' is not a valid URL", cmd.config.Auth.APIEndpoint)
}
authOpsClient := v1auth.NewOpsClient(v1auth.OpsClientConfig{
Base: authbase,
Logger: cmd.Logger(),
})
client := v1auth.NewClient(v1auth.ClientConfig{
Base: authbase,
Logger: cmd.Logger(),
OAuthTokenProvider: oauth.NewConfigProvider(authOpsClient, cmd.config.Auth.SecureClientID, cmd.config.Auth.SecureClientSecret, cmd.session),
})
list, err := client.ListClusters()
if err != nil {
return err
}
var cluster *v1authpayload.GetClusterOutput
cluster, err = lookByID(args[0], list.Clusters)
if err != nil {
cluster, err = lookByName(args[0], list.Clusters)
if err != nil {
return err
}
}
cluster, err = client.GetCluster(cluster.URL)
if err != nil {
return err
}
if cluster == nil {
cmd.out.Infof("Cluster not found. You can use `nerd cluster list` to see your clusters.")
return nil
}
kubeConfig, err := kubeconfig.GetPath(cmd.globalOpts.KubeConfig)
if err != nil {
return err
}
p, err := populator.New("generic", kubeConfig, cluster)
if err != nil {
return err
}
if cmd.Namespace == "" && len(cluster.Namespaces) >= 1 {
cmd.Namespace = cluster.Namespaces[0].Name
}
err = p.PopulateKubeConfig(cmd.Namespace)
if err != nil {
p.RemoveConfig(cluster.ShortName)
return err
}
if err := checkNamespace(kubeConfig, cmd.Namespace); err != nil {
p.RemoveConfig(cluster.ShortName)
return err
}
if cluster.ServiceType != PublicCluster {
deps, err := NewDeps(cmd.Logger(), cmd.globalOpts.KubeOpts)
if err != nil {
return renderConfigError(err, "failed to configure")
}
kube := svc.NewKube(deps)
ok, nerdDependencies, err := kube.IsNerdCompliant(ctx)
if err != nil {
return err
}
if !ok {
cmd.out.Info("Cluster is not nerd compliant, installing dependencies...")
// TODO move this to a new command
err = kube.AddNerdDependencies(ctx, &svc.AddNerdDependenciesInput{Dependencies: nerdDependencies})
if err != nil {
return err
}
}
}
name := cluster.Name
if name == "" {
name = cluster.ShortName
}
cmd.out.Infof("You are now using '%s' config.", name)
return nil
}
func lookByID(name string, clusters []*v1authpayload.GetClusterOutput) (*v1authpayload.GetClusterOutput, error) {
id, err := strconv.Atoi(name)
if err != nil {
return nil, err
}
id--
if len(clusters) >= id {
return clusters[id], nil
}
return nil, errors.New("cluster not found")
}
func lookByName(name string, clusters []*v1authpayload.GetClusterOutput) (*v1authpayload.GetClusterOutput, error) {
for _, cluster := range clusters {
if cluster.ShortName == name || cluster.Name == name {
return cluster, nil
}
}
return nil, errors.New("cluster not found")
}
// Description returns long-form help text
func (cmd *ClusterUse) Description() string { return cmd.Synopsis() }
// Synopsis returns a one-line
func (cmd *ClusterUse) Synopsis() string {
return "Set a specific cluster as the current one to use."
}
// Usage shows usage
func (cmd *ClusterUse) Usage() string { return "nerd cluster set-default NAME [OPTIONS]" }