horizontalpodautoscalerdetail.go

// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 horizontalpodautoscalerdetail

import (
	"log"

	"github.com/kubernetes/dashboard/src/app/backend/resource/common"
	"github.com/kubernetes/dashboard/src/app/backend/resource/horizontalpodautoscaler"
	"k8s.io/kubernetes/pkg/api/unversioned"
	"k8s.io/kubernetes/pkg/apis/autoscaling"
	client "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
)

// HorizontalPodAutoscalerDetail provides the presentation layer view of Kubernetes Horizontal Pod Autoscaler resource.
// close mapping of the autoscaling.HorizontalPodAutoscaler type with part of the *Spec and *Detail childs
type HorizontalPodAutoscalerDetail struct {
	ObjectMeta common.ObjectMeta `json:"objectMeta"`
	TypeMeta   common.TypeMeta   `json:"typeMeta"`

	ScaleTargetRef horizontalpodautoscaler.ScaleTargetRef `json:"scaleTargetRef"`

	MinReplicas *int32 `json:"minReplicas"`
	MaxReplicas int32  `json:"maxReplicas"`

	CurrentCPUUtilizationPercentage *int32 `json:"currentCPUUtilizationPercentage"`
	TargetCPUUtilizationPercentage  *int32 `json:"targetCPUUtilizationPercentage"`

	CurrentReplicas int32 `json:"currentReplicas"`
	DesiredReplicas int32 `json:"desiredReplicas"`

	LastScaleTime *unversioned.Time `json:"lastScaleTime"`
}

// GetHorizontalPodAutoscalerDetail returns detailed information about a horizontal pod autoscaler
func GetHorizontalPodAutoscalerDetail(client client.Interface, namespace string, name string) (*HorizontalPodAutoscalerDetail, error) {
	log.Printf("Getting details of %s horizontal pod autoscaler", name)

	rawHorizontalPodAutoscaler, err := client.Autoscaling().HorizontalPodAutoscalers(namespace).Get(name)

	if err != nil {
		return nil, err
	}

	return getHorizontalPodAutoscalerDetail(rawHorizontalPodAutoscaler), nil
}

func getHorizontalPodAutoscalerDetail(horizontalPodAutoscaler *autoscaling.HorizontalPodAutoscaler) *HorizontalPodAutoscalerDetail {

	return &HorizontalPodAutoscalerDetail{
		ObjectMeta: common.NewObjectMeta(horizontalPodAutoscaler.ObjectMeta),
		TypeMeta:   common.NewTypeMeta(common.ResourceKindHorizontalPodAutoscaler),

		ScaleTargetRef: horizontalpodautoscaler.ScaleTargetRef{
			Kind: horizontalPodAutoscaler.Spec.ScaleTargetRef.Kind,
			Name: horizontalPodAutoscaler.Spec.ScaleTargetRef.Name,
		},

		MinReplicas:                     horizontalPodAutoscaler.Spec.MinReplicas,
		MaxReplicas:                     horizontalPodAutoscaler.Spec.MaxReplicas,
		CurrentCPUUtilizationPercentage: horizontalPodAutoscaler.Status.CurrentCPUUtilizationPercentage,
		TargetCPUUtilizationPercentage:  horizontalPodAutoscaler.Spec.TargetCPUUtilizationPercentage,

		CurrentReplicas: horizontalPodAutoscaler.Status.CurrentReplicas,
		DesiredReplicas: horizontalPodAutoscaler.Status.DesiredReplicas,

		LastScaleTime: horizontalPodAutoscaler.Status.LastScaleTime,
	}
}