122 lines
4.3 KiB
Go
122 lines
4.3 KiB
Go
//
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// Copyright (c) 2012-2019 Red Hat, Inc.
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// This program and the accompanying materials are made
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// available under the terms of the Eclipse Public License 2.0
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// which is available at https://www.eclipse.org/legal/epl-2.0/
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//
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// SPDX-License-Identifier: EPL-2.0
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//
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// Contributors:
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// Red Hat, Inc. - initial API and implementation
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//
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package deploy
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import (
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"context"
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"fmt"
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orgv1 "github.com/eclipse/che-operator/pkg/apis/org/v1"
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"github.com/google/go-cmp/cmp"
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"github.com/google/go-cmp/cmp/cmpopts"
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"github.com/sirupsen/logrus"
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appsv1 "k8s.io/api/apps/v1"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/api/resource"
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"k8s.io/apimachinery/pkg/types"
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runtimeClient "sigs.k8s.io/controller-runtime/pkg/client"
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)
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var deploymentDiffOpts = cmp.Options{
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cmpopts.IgnoreFields(appsv1.Deployment{}, "TypeMeta", "ObjectMeta", "Status"),
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cmpopts.IgnoreFields(appsv1.DeploymentSpec{}, "Replicas", "RevisionHistoryLimit", "ProgressDeadlineSeconds"),
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cmpopts.IgnoreFields(appsv1.DeploymentStrategy{}, "RollingUpdate"),
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cmpopts.IgnoreFields(corev1.Container{}, "TerminationMessagePath", "TerminationMessagePolicy"),
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cmpopts.IgnoreFields(corev1.PodSpec{}, "DNSPolicy", "SchedulerName", "SecurityContext"),
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cmpopts.IgnoreFields(corev1.VolumeSource{}, "EmptyDir"),
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cmp.Comparer(func(x, y resource.Quantity) bool {
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return x.Cmp(y) == 0
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}),
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}
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type DeploymentProvisioningStatus struct {
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ProvisioningStatus
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Deployment *appsv1.Deployment
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}
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func SyncDeploymentToCluster(
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checluster *orgv1.CheCluster,
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specDeployment *appsv1.Deployment,
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clusterDeployment *appsv1.Deployment,
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additionalDeploymentDiffOpts cmp.Options,
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additionalDeploymentMerge func(*appsv1.Deployment, *appsv1.Deployment) *appsv1.Deployment,
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clusterAPI ClusterAPI) DeploymentProvisioningStatus {
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clusterDeployment, err := getClusterDeployment(specDeployment.Name, specDeployment.Namespace, clusterAPI.Client)
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if err != nil {
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return DeploymentProvisioningStatus{
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ProvisioningStatus: ProvisioningStatus{Err: err},
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}
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}
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if clusterDeployment == nil {
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logrus.Infof("Creating a new object: %s, name %s", specDeployment.Kind, specDeployment.Name)
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err := clusterAPI.Client.Create(context.TODO(), specDeployment)
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return DeploymentProvisioningStatus{
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ProvisioningStatus: ProvisioningStatus{Requeue: true, Err: err},
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}
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}
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// 2-step comparation process
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// Firstly compare fields (and update the object if necessary) specifc to deployment
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// And only then compare common deployment fields
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if additionalDeploymentDiffOpts != nil {
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diff := cmp.Diff(clusterDeployment, specDeployment, additionalDeploymentDiffOpts)
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if len(diff) > 0 {
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logrus.Infof("Updating existed object: %s, name: %s", specDeployment.Kind, specDeployment.Name)
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fmt.Printf("Difference:\n%s", diff)
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clusterDeployment = additionalDeploymentMerge(specDeployment, clusterDeployment)
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err := clusterAPI.Client.Update(context.TODO(), clusterDeployment)
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return DeploymentProvisioningStatus{
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ProvisioningStatus: ProvisioningStatus{Requeue: true, Err: err},
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}
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}
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}
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diff := cmp.Diff(clusterDeployment, specDeployment, deploymentDiffOpts)
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if len(diff) > 0 {
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logrus.Infof("Updating existed object: %s, name: %s", specDeployment.Kind, specDeployment.Name)
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fmt.Printf("Difference:\n%s", diff)
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clusterDeployment.Spec = specDeployment.Spec
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err := clusterAPI.Client.Update(context.TODO(), clusterDeployment)
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return DeploymentProvisioningStatus{
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ProvisioningStatus: ProvisioningStatus{Requeue: true, Err: err},
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}
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}
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if clusterDeployment.Spec.Strategy.Type == appsv1.RollingUpdateDeploymentStrategyType && clusterDeployment.Status.Replicas > 1 {
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logrus.Infof("Deployment %s is in the rolling update state.", specDeployment.Name)
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}
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return DeploymentProvisioningStatus{
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ProvisioningStatus: ProvisioningStatus{Continue: clusterDeployment.Status.AvailableReplicas == 1 && clusterDeployment.Status.Replicas == 1},
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Deployment: clusterDeployment,
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}
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}
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func getClusterDeployment(name string, namespace string, client runtimeClient.Client) (*appsv1.Deployment, error) {
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deployment := &appsv1.Deployment{}
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namespacedName := types.NamespacedName{
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Namespace: namespace,
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Name: name,
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}
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err := client.Get(context.TODO(), namespacedName, deployment)
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if err != nil {
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if errors.IsNotFound(err) {
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return nil, nil
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}
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return nil, err
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}
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return deployment, nil
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}
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