/
wait.go
178 lines (149 loc) · 5.08 KB
/
wait.go
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// Copyright © 2019 Banzai Cloud
//
// 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 k8s
import (
"context"
"fmt"
"strings"
log "github.com/sirupsen/logrus"
"istio.io/operator/pkg/object"
appsv1 "k8s.io/api/apps/v1"
apiextensionsv1beta1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/wait"
k8sclient "github.com/banzaicloud/backyards-cli/pkg/k8s/client"
)
type NamespacedNameWithGVK struct {
types.NamespacedName
schema.GroupVersionKind
}
type ResourceConditionCheck func(*unstructured.Unstructured, error) bool
func ExistsConditionCheck(obj *unstructured.Unstructured, k8serror error) bool {
if k8serror == nil {
return true
}
if !k8serrors.IsNotFound(k8serror) {
log.Error(k8serror)
}
return false
}
func NonExistsConditionCheck(obj *unstructured.Unstructured, k8serror error) bool {
return k8serrors.IsNotFound(k8serror)
}
func CRDEstablishedConditionCheck(obj *unstructured.Unstructured, k8serror error) bool {
var resource apiextensionsv1beta1.CustomResourceDefinition
err := k8sclient.GetScheme().Convert(obj, &resource, nil)
// simply return true for unconvertable objects
if err != nil {
return true
}
for _, condition := range resource.Status.Conditions {
if condition.Type == apiextensionsv1beta1.Established {
if condition.Status == apiextensionsv1beta1.ConditionTrue {
return true
}
}
}
return false
}
func ReadyReplicasConditionCheck(obj *unstructured.Unstructured, k8serror error) bool {
var deployment appsv1.Deployment
deploymentErr := k8sclient.GetScheme().Convert(obj, &deployment, nil)
if deploymentErr == nil && deployment.Status.ReadyReplicas == deployment.Status.Replicas {
return true
}
var statefulset appsv1.StatefulSet
statefulsetErr := k8sclient.GetScheme().Convert(obj, &statefulset, nil)
if statefulsetErr == nil && statefulset.Status.ReadyReplicas == statefulset.Status.Replicas {
return true
}
// return true for unconvertable objects
if deploymentErr != nil && statefulsetErr != nil {
return true
}
return false
}
func WaitForResourcesConditions(client k8sclient.Client, objects []NamespacedNameWithGVK, backoff wait.Backoff, checkFuncs ...ResourceConditionCheck) error {
for _, o := range objects {
err := waitForResourceConditions(client, o.Unstructured(), backoff, checkFuncs...)
if err != nil {
return err
}
}
return nil
}
type WaitForResourceConditionsFunc func(k8sclient.Client, *unstructured.Unstructured) error
func WaitForResourceConditions(backoff wait.Backoff, checkFuncs ...ResourceConditionCheck) WaitForResourceConditionsFunc {
return func(client k8sclient.Client, object *unstructured.Unstructured) error {
return waitForResourceConditions(client, object, backoff, checkFuncs...)
}
}
func waitForResourceConditions(client k8sclient.Client, object *unstructured.Unstructured, backoff wait.Backoff, checkFuncs ...ResourceConditionCheck) error {
log.Infof("%s - pending", getFormattedName(object))
err := wait.ExponentialBackoff(backoff, func() (bool, error) {
resource := object.DeepCopy()
err := client.Get(context.Background(), types.NamespacedName{
Name: resource.GetName(),
Namespace: resource.GetNamespace(),
}, resource)
for _, fn := range checkFuncs {
ok := fn(resource, err)
if !ok {
return false, nil
}
}
return true, nil
})
if err != nil {
return err
}
log.Infof("%s - ok", getFormattedName(object))
return nil
}
func (o NamespacedNameWithGVK) Unstructured() *unstructured.Unstructured {
obj := &unstructured.Unstructured{}
obj.SetName(o.Name)
obj.SetNamespace(o.Namespace)
obj.SetGroupVersionKind(o.GroupVersionKind)
return obj
}
func (o NamespacedNameWithGVK) String() string {
if o.Namespace == "" {
return fmt.Sprintf("%s/%s", strings.ToLower(o.GroupVersionKind.Kind), o.Name)
}
return fmt.Sprintf("%s/%s/%s", strings.ToLower(o.GroupVersionKind.Kind), o.Namespace, o.Name)
}
func NamesWithGVKFromK8sObjects(objects object.K8sObjects, kind ...string) []NamespacedNameWithGVK {
kinds := make(map[string]bool, len(kind))
for _, kind := range kind {
kinds[kind] = true
}
names := make([]NamespacedNameWithGVK, 0)
for _, obj := range objects {
if len(kinds) > 0 && !kinds[obj.GroupVersionKind().Kind] {
continue
}
names = append(names, NamespacedNameWithGVK{
NamespacedName: types.NamespacedName{
Name: obj.Name,
Namespace: obj.Namespace,
},
GroupVersionKind: obj.GroupVersionKind(),
})
}
return names
}