/
waiter.go
109 lines (89 loc) · 2.51 KB
/
waiter.go
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// Copyright 2022 Flant JSC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package resources
import (
"time"
"github.com/hashicorp/go-multierror"
"github.com/deckhouse/deckhouse/dhctl/pkg/config"
"github.com/deckhouse/deckhouse/dhctl/pkg/kubernetes/client"
"github.com/deckhouse/deckhouse/dhctl/pkg/template"
"github.com/deckhouse/deckhouse/dhctl/pkg/util/retry"
)
type Checker interface {
IsReady() (bool, error)
Name() string
}
func GetCheckers(kubeCl *client.KubernetesClient, resources template.Resources, metaConfig *config.MetaConfig) ([]Checker, error) {
if metaConfig != nil {
for _, terraNg := range metaConfig.GetTerraNodeGroups() {
if terraNg.Replicas > 0 {
checker := newClusterIsBootstrapCheck(&kubeNgGetter{kubeCl: kubeCl}, kubeCl)
return []Checker{checker}, nil
}
}
}
errRes := &multierror.Error{}
checkers := make([]Checker, 0)
for _, r := range resources {
check, err := tryToGetClusterIsBootstrappedChecker(kubeCl, r)
if err != nil {
errRes = multierror.Append(errRes, err)
continue
}
if check != nil {
checkers = append(checkers, check)
// while we use one checker, we should break because
// cluster is bootstrap checker should be in single instance
// and should be single checker
break
}
}
if errRes.Len() > 0 {
return nil, errRes
}
return checkers, nil
}
type Waiter struct {
checkers []Checker
attempts int
}
func NewWaiter(checkers []Checker) *Waiter {
return &Waiter{
attempts: 6,
checkers: checkers,
}
}
func (w *Waiter) WithAttempts(a int) *Waiter {
w.attempts = a
return w
}
func (w *Waiter) ReadyAll() (bool, error) {
checkersToStay := make([]Checker, 0)
for _, c := range w.checkers {
var ready bool
err := retry.NewSilentLoop(c.Name(), w.attempts, 5*time.Second).Run(func() error {
var err error
ready, err = c.IsReady()
return err
})
if err != nil {
return false, err
}
if !ready {
checkersToStay = append(checkersToStay, c)
}
}
w.checkers = checkersToStay
return len(w.checkers) == 0, nil
}