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create.go
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create.go
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package create
import (
"context"
"fmt"
"math/rand"
"time"
runtimev1 "github.com/crossplane/crossplane-runtime/apis/common/v1"
"github.com/crossplane/crossplane-runtime/pkg/resource"
"github.com/lucasepe/codename"
"github.com/ninech/nctl/api"
"github.com/ninech/nctl/internal/format"
"github.com/theckman/yacspin"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/client-go/util/retry"
runtimeclient "sigs.k8s.io/controller-runtime/pkg/client"
)
type Cmd struct {
Filename string `short:"f" predictor:"file"`
FromFile fromFile `cmd:"" default:"1" name:"-f <file>" help:"Create any resource from a yaml or json file."`
VCluster vclusterCmd `cmd:"" group:"infrastructure.nine.ch" name:"vcluster" help:"Create a new vcluster."`
APIServiceAccount apiServiceAccountCmd `cmd:"" group:"iam.nine.ch" name:"apiserviceaccount" aliases:"asa" help:"Create a new API Service Account."`
Project projectCmd `cmd:"" group:"management.nine.ch" name:"project" help:"Create a new project."`
Config configCmd `cmd:"" group:"deplo.io" name:"config" help:"Create a new deplo.io Project Configuration. (Beta - requires access)"`
Application applicationCmd `cmd:"" group:"deplo.io" name:"application" aliases:"app" help:"Create a new deplo.io Application. (Beta - requires access)"`
MySQL mySQLCmd `cmd:"" group:"storage.nine.ch" name:"mysql" help:"Create a new MySQL instance."`
Postgres postgresCmd `cmd:"" group:"storage.nine.ch" name:"postgres" help:"Create a new PostgreSQL instance."`
KeyValueStore keyValueStoreCmd `cmd:"" group:"storage.nine.ch" name:"keyvaluestore" aliases:"kvs" help:"Create a new KeyValueStore instance"`
CloudVirtualMachine cloudVMCmd `cmd:"" group:"infrastructure.nine.ch" name:"cloudvirtualmachine" aliases:"cloudvm" help:"Create a new CloudVM."`
}
type resourceCmd struct {
Name string `arg:"" help:"Name of the new resource. A random name is generated if omitted." default:""`
Wait bool `default:"true" help:"Wait until resource is fully created."`
WaitTimeout time.Duration `default:"30m" help:"Duration to wait for resource getting ready. Only relevant if wait is set."`
}
// resultFunc is the function called on a watch event during creation. It
// should return true whenever the wait can be considered done.
type resultFunc func(watch.Event) (bool, error)
type creator struct {
client *api.Client
mg resource.Managed
kind string
}
type waitStage struct {
kind string
waitMessage *message
doneMessage *message
objectList runtimeclient.ObjectList
listOpts []runtimeclient.ListOption
onResult resultFunc
spinner *yacspin.Spinner
disableSpinner bool
// beforeWait is a hook that is called just before the wait is being run.
beforeWait func()
}
type message struct {
icon string
text string
disabled bool
}
var watchBackoff = wait.Backoff{
Steps: 15,
Duration: 10 * time.Millisecond,
Factor: 1.0,
Jitter: 0.1,
}
func (m *message) progress() string {
if m.disabled {
return ""
}
return format.ProgressMessagef(m.icon, m.text)
}
func (m *message) printSuccess() {
if m.disabled {
return
}
format.PrintSuccessf(m.icon, m.text)
}
func newCreator(client *api.Client, mg resource.Managed, resourceName string) *creator {
return &creator{client: client, mg: mg, kind: resourceName}
}
func (c *creator) createResource(ctx context.Context) error {
if err := c.client.Create(ctx, c.mg); err != nil {
return fmt.Errorf("unable to create %s %q: %w", c.kind, c.mg.GetName(), err)
}
format.PrintSuccessf("🏗", "created %s %q", c.kind, c.mg.GetName())
return nil
}
func (c *creator) wait(ctx context.Context, stages ...waitStage) error {
for _, stage := range stages {
stage.setDefaults(c)
spinner, err := format.NewSpinner(
stage.waitMessage.progress(),
stage.waitMessage.progress(),
)
if err != nil {
return err
}
stage.spinner = spinner
if stage.beforeWait != nil {
stage.beforeWait()
}
if err := retry.OnError(watchBackoff, isWatchError, func() error {
return stage.wait(ctx, c.client)
}); err != nil {
_ = stage.spinner.StopFail()
_ = stage.spinner.Stop()
return err
}
}
return nil
}
func (w *waitStage) setDefaults(c *creator) {
if len(w.kind) == 0 {
w.kind = c.kind
}
if w.waitMessage == nil {
w.waitMessage = &message{
text: fmt.Sprintf("waiting for %s to be ready", w.kind),
icon: "⏳",
}
}
if w.doneMessage == nil {
w.doneMessage = &message{
text: fmt.Sprintf("%s ready", w.kind),
icon: "🛫",
}
}
if len(w.listOpts) == 0 {
w.listOpts = []runtimeclient.ListOption{
runtimeclient.InNamespace(c.mg.GetNamespace()),
runtimeclient.MatchingFields{"metadata.name": c.mg.GetName()},
}
}
}
type watchError struct {
kind string
}
func (werr watchError) Error() string {
return fmt.Sprintf("error watching %s, the API might be experiencing connectivity issues", werr.kind)
}
func isWatchError(err error) bool {
_, ok := err.(watchError)
return ok
}
func (w *waitStage) wait(ctx context.Context, client *api.Client) error {
if !w.disableSpinner {
_ = w.spinner.Start()
}
return w.watch(ctx, client)
}
func (w *waitStage) watch(ctx context.Context, client *api.Client) error {
wa, err := client.Watch(ctx, w.objectList, w.listOpts...)
if err != nil {
if err == context.Canceled {
return err
}
return watchError{kind: w.kind}
}
for {
select {
case res := <-wa.ResultChan():
if res.Type == watch.Error || res.Type == "" {
return watchError{kind: w.kind}
}
done, err := w.onResult(res)
if err != nil {
_ = w.spinner.StopFail()
return err
}
if done {
wa.Stop()
_ = w.spinner.Stop()
// print out the done message directly
w.doneMessage.printSuccess()
return nil
}
case <-ctx.Done():
msg := "timeout waiting for %s"
w.spinner.StopFailMessage(format.ProgressMessagef("", msg, w.kind))
_ = w.spinner.StopFail()
return fmt.Errorf(msg, w.kind)
}
}
}
func resourceAvailable(event watch.Event) (bool, error) {
mg, ok := event.Object.(resource.Managed)
if !ok {
return false, nil
}
return isAvailable(mg), nil
}
func isAvailable(mg resource.Managed) bool {
return mg.GetCondition(runtimev1.TypeReady).Reason == runtimev1.ReasonAvailable &&
mg.GetCondition(runtimev1.TypeReady).Status == corev1.ConditionTrue
}
func getName(name string) string {
if len(name) != 0 {
return name
}
return codename.Generate(rand.New(rand.NewSource(time.Now().UnixNano())), 0)
}