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Add support for stateful sets (#145)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| apiVersion: apps/v1 # for k8s versions before 1.9.0 use apps/v1beta2 and before 1.8.0 use extensions/v1beta1 | ||
| kind: StatefulSet | ||
| metadata: | ||
| name: web | ||
| labels: | ||
| app: nginx | ||
| spec: | ||
| serviceName: "nginx" | ||
| selector: | ||
| matchLabels: | ||
| app: nginx | ||
| replicas: 14 | ||
| template: | ||
| metadata: | ||
| labels: | ||
| app: nginx | ||
| spec: | ||
| containers: | ||
| - name: nginx | ||
| image: k8s.gcr.io/nginx-slim:0.8 | ||
| ports: | ||
| - containerPort: 80 | ||
| name: web | ||
| volumeMounts: | ||
| - name: www | ||
| mountPath: /usr/share/nginx/html | ||
| volumeClaimTemplates: | ||
| - metadata: | ||
| name: www | ||
| spec: | ||
| accessModes: [ "ReadWriteOnce" ] | ||
| resources: | ||
| requests: | ||
| storage: 1Gi | ||
| storageClassName: thin-disk |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| // Copyright 2019 ReactiveOps | ||
| // | ||
| // 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 validator | ||
|
|
||
| import ( | ||
| conf "github.com/reactiveops/polaris/pkg/config" | ||
| "github.com/reactiveops/polaris/pkg/kube" | ||
| appsv1 "k8s.io/api/apps/v1" | ||
| corev1 "k8s.io/api/core/v1" | ||
| ) | ||
|
|
||
| // ControllerSpec is a generic type for k8s controller specs | ||
| type ControllerSpec struct { | ||
| Template corev1.PodTemplateSpec | ||
| } | ||
|
|
||
| // Controller is a generic type for k8s controllers (e.g. Deployments and StatefulSets) | ||
| type Controller struct { | ||
| Type string | ||
| Name string | ||
| Namespace string | ||
| Spec ControllerSpec | ||
| } | ||
|
|
||
| // ValidateController validates a single controller, returns a ControllerResult. | ||
| func ValidateController(conf conf.Configuration, controller Controller) ControllerResult { | ||
| pod := controller.Spec.Template.Spec | ||
| podResult := ValidatePod(conf, &pod) | ||
| return ControllerResult{ | ||
| Type: controller.Type, | ||
| Name: controller.Name, | ||
| PodResult: podResult, | ||
| } | ||
| } | ||
|
|
||
| // ValidateControllers validates that each deployment conforms to the Polaris config, | ||
| // returns a list of ResourceResults organized by namespace. | ||
| func ValidateControllers(config conf.Configuration, kubeResources *kube.ResourceProvider, nsResults *NamespacedResults) { | ||
| controllers := []Controller{} | ||
| for _, deploy := range kubeResources.Deployments { | ||
| controllers = append(controllers, ControllerFromDeployment(deploy)) | ||
| } | ||
| for _, deploy := range kubeResources.StatefulSets { | ||
| controllers = append(controllers, ControllerFromStatefulSet(deploy)) | ||
| } | ||
| for _, controller := range controllers { | ||
| controllerResult := ValidateController(config, controller) | ||
| nsResult := nsResults.getNamespaceResult(controller.Namespace) | ||
| nsResult.Summary.appendResults(*controllerResult.PodResult.Summary) | ||
| if controller.Type == "Deployment" { | ||
| nsResult.DeploymentResults = append(nsResult.DeploymentResults, controllerResult) | ||
| } else if controller.Type == "StatefulSet" { | ||
| nsResult.StatefulSetResults = append(nsResult.StatefulSetResults, controllerResult) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // ControllerFrom* functions are 100% boilerplate | ||
|
|
||
| // ControllerFromDeployment creates a controller | ||
| func ControllerFromDeployment(c appsv1.Deployment) Controller { | ||
| spec := ControllerSpec{ | ||
| Template: c.Spec.Template, | ||
| } | ||
| return Controller{ | ||
| Type: "Deployment", | ||
| Name: c.Name, | ||
| Namespace: c.Namespace, | ||
| Spec: spec, | ||
| } | ||
| } | ||
|
|
||
| // ControllerFromStatefulSet creates a controller | ||
| func ControllerFromStatefulSet(c appsv1.StatefulSet) Controller { | ||
| spec := ControllerSpec{ | ||
| Template: c.Spec.Template, | ||
| } | ||
| return Controller{ | ||
| Type: "StatefulSet", | ||
| Name: c.Name, | ||
| Namespace: c.Namespace, | ||
| Spec: spec, | ||
| } | ||
| } |
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