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Merge pull request #12 from reactiveops/jg/add-deploys
jg/add deploys
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| package validator | ||
|
|
||
| import ( | ||
| "context" | ||
| "net/http" | ||
|
|
||
| conf "github.com/reactiveops/fairwinds/pkg/config" | ||
| appsv1 "k8s.io/api/apps/v1" | ||
| corev1 "k8s.io/api/core/v1" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| "sigs.k8s.io/controller-runtime/pkg/runtime/inject" | ||
| "sigs.k8s.io/controller-runtime/pkg/webhook/admission" | ||
| "sigs.k8s.io/controller-runtime/pkg/webhook/admission/types" | ||
| ) | ||
|
|
||
| // Validator validates k8s resources. | ||
| type Validator struct { | ||
| client client.Client | ||
| decoder types.Decoder | ||
| Config conf.Configuration | ||
| } | ||
|
|
||
| var _ inject.Client = &Validator{} | ||
|
|
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| // InjectClient injects the client. | ||
| func (v *Validator) InjectClient(c client.Client) error { | ||
| v.client = c | ||
| return nil | ||
| } | ||
|
|
||
| var _ inject.Decoder = &Validator{} | ||
|
|
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| // InjectDecoder injects the decoder. | ||
| func (v *Validator) InjectDecoder(d types.Decoder) error { | ||
| v.decoder = d | ||
| return nil | ||
| } | ||
|
|
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| var _ admission.Handler = &Validator{} | ||
|
|
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| // Handle for Validator to run validation checks. | ||
| func (v *Validator) Handle(ctx context.Context, req types.Request) types.Response { | ||
| var err error | ||
| var allowed bool | ||
| var reason string | ||
| var results Results | ||
|
|
||
| switch req.AdmissionRequest.Kind.Kind { | ||
| case "Deployment": | ||
| deploy := appsv1.Deployment{} | ||
| err = v.decoder.Decode(req, &deploy) | ||
| results = ValidateDeploys(v.Config, &deploy, Results{}) | ||
| case "Pod": | ||
| pod := corev1.Pod{} | ||
| err = v.decoder.Decode(req, &pod) | ||
| results = ValidatePods(v.Config, &pod.Spec, Results{}) | ||
| } | ||
| if err != nil { | ||
| return admission.ErrorResponse(http.StatusBadRequest, err) | ||
| } | ||
|
|
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| allowed, reason = results.Format() | ||
| return admission.ValidationResponse(allowed, reason) | ||
| } | ||
|
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| // ValidateDeploys validates that each deployment conforms to the Fairwinds config. | ||
| func ValidateDeploys(conf conf.Configuration, deploy *appsv1.Deployment, results Results) Results { | ||
| pod := deploy.Spec.Template.Spec | ||
| return ValidatePods(conf, &pod, results) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| package validator | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/http" | ||
|
|
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| conf "github.com/reactiveops/fairwinds/pkg/config" | ||
| "github.com/reactiveops/fairwinds/pkg/kube" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| ) | ||
|
|
||
| // PingHandler is an endpoint to check the server is up. | ||
| func PingHandler(w http.ResponseWriter, r *http.Request) { | ||
| fmt.Fprintf(w, "pong\n") | ||
| } | ||
|
|
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| // DeployHandler creates a handler for to validate the current deploy workloads. | ||
| func DeployHandler(w http.ResponseWriter, r *http.Request, c conf.Configuration) { | ||
| var results []Results | ||
| deploys, err := kube.AppsV1API.Deployments("").List(metav1.ListOptions{}) | ||
| if err != nil { | ||
| fmt.Fprintf(w, err.Error()) | ||
| return | ||
| } | ||
| for _, deploy := range deploys.Items { | ||
| result := ValidateDeploys(c, &deploy, Results{}) | ||
| results = append(results, result) | ||
| } | ||
| w.WriteHeader(http.StatusOK) | ||
| w.Header().Set("Content-Type", "application/json") | ||
| json.NewEncoder(w).Encode(results) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| package validator | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
|
|
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| admissionregistrationv1beta1 "k8s.io/api/admissionregistration/v1beta1" | ||
| "k8s.io/apimachinery/pkg/runtime" | ||
| "sigs.k8s.io/controller-runtime/pkg/manager" | ||
| "sigs.k8s.io/controller-runtime/pkg/webhook/admission" | ||
| "sigs.k8s.io/controller-runtime/pkg/webhook/admission/builder" | ||
| ) | ||
|
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| // NewWebhook creates a validating admission webhook for the apiType. | ||
| func NewWebhook(name string, mgr manager.Manager, validator Validator, apiType runtime.Object) *admission.Webhook { | ||
| name = fmt.Sprintf("%s.k8s.io", name) | ||
| path := fmt.Sprintf("/validating-%s", name) | ||
|
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| webhook, err := builder.NewWebhookBuilder(). | ||
| Name(name). | ||
| Validating(). | ||
| Path(path). | ||
| Operations(admissionregistrationv1beta1.Create, admissionregistrationv1beta1.Update). | ||
| WithManager(mgr). | ||
| ForType(apiType). | ||
| Handlers(&validator). | ||
| Build() | ||
| if err != nil { | ||
| log.Error(err, "unable to setup validating webhook:", name) | ||
| os.Exit(1) | ||
| } | ||
|
|
||
| return webhook | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| --- | ||
| apiVersion: apps/v1 | ||
| kind: Deployment | ||
| metadata: | ||
| name: ng | ||
| labels: | ||
| app: nginx | ||
| spec: | ||
| replicas: 1 | ||
| selector: | ||
| matchLabels: | ||
| app: nginx | ||
| template: | ||
| metadata: | ||
| labels: | ||
| app: nginx | ||
| spec: | ||
| containers: | ||
| - name: nginx | ||
| image: nginx:1.7.9 | ||
| ports: | ||
| - containerPort: 80 |
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