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deployment.go
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deployment.go
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/*
* Copyright (c) 2019 WSO2 Inc. (http:www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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 (
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"github.com/cellery-io/mesh-controller/pkg/apis/mesh/v1alpha2"
"github.com/cellery-io/mesh-controller/pkg/controller"
"github.com/cellery-io/mesh-controller/pkg/meta"
"github.com/cellery-io/mesh-controller/pkg/ptr"
)
const readinessInitialDelay = 15
const readinessTimeout = 5
const readinessPeriod = 20
const readinessFailureThreshold = 3
const readinessSuccessThreshold = 1
func MakeDeployment(component *v1alpha2.Component) *appsv1.Deployment {
deployment := &appsv1.Deployment{
ObjectMeta: metav1.ObjectMeta{
Name: DeploymentName(component),
Namespace: component.Namespace,
Labels: makeLabels(component),
OwnerReferences: []metav1.OwnerReference{
*controller.CreateComponentOwnerRef(component),
},
},
Spec: appsv1.DeploymentSpec{
Replicas: ptr.Int32(component.Spec.ScalingPolicy.MinReplicas()),
Selector: makeSelector(component),
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: makeLabels(component),
Annotations: makePodAnnotations(component),
},
Spec: makePodSpec(component,
addPorts(component),
addPersistentVolumeClaimVolumes(component),
addConfigMapVolumes(component),
addSecretVolumes(component),
),
},
},
}
meta.AddObjectHash(deployment)
return deployment
}
func RequireDeployment(component *v1alpha2.Component) bool {
return component.Spec.Type == v1alpha2.ComponentTypeDeployment && !component.Spec.ScalingPolicy.IsKpa()
}
func RequireDeploymentUpdate(component *v1alpha2.Component, deployment *appsv1.Deployment) bool {
return component.Generation != component.Status.ObservedGeneration ||
deployment.Generation != component.Status.DeploymentGeneration
}
func CopyDeployment(source, destination *appsv1.Deployment, component *v1alpha2.Component) {
destination.Spec.Template = source.Spec.Template
destination.Spec.Selector = source.Spec.Selector
// If the scaling policy is using HPA, should not update the replicas forcefully since the replica count will be updated by the HPA.
if !component.Spec.ScalingPolicy.IsHpa() {
destination.Spec.Replicas = source.Spec.Replicas
}
destination.Labels = source.Labels
destination.Annotations = source.Annotations
}
func StatusFromDeployment(component *v1alpha2.Component, deployment *appsv1.Deployment) {
component.Status.Type = v1alpha2.ComponentTypeDeployment
component.Status.AvailableReplicas = deployment.Status.AvailableReplicas
component.Status.DeploymentGeneration = deployment.Generation
if deployment.Status.AvailableReplicas > 0 {
component.Status.Status = v1alpha2.ComponentCurrentStatusReady
} else {
component.Status.Status = v1alpha2.ComponentCurrentStatusNotReady
}
}