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Generate and add api for cluster status (#263)
Signed-off-by: Tamal Saha <[email protected]> Signed-off-by: Imtiaz Uddin <[email protected]> Co-authored-by: Tamal Saha <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,2 @@ | ||
| apiVersion: meta.k8s.appscode.com/v1alpha1 | ||
| kind: ClusterStatus |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /* | ||
| Copyright AppsCode Inc. and Contributors. | ||
| 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 clusterstatus | ||
|
|
||
| import ( | ||
| "context" | ||
|
|
||
| apps "k8s.io/api/apps/v1" | ||
| apierrors "k8s.io/apimachinery/pkg/api/errors" | ||
| "k8s.io/apimachinery/pkg/api/meta" | ||
| "k8s.io/apimachinery/pkg/runtime/schema" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
| ) | ||
|
|
||
| const ( | ||
| KeyACEManaged = "byte.builders/managed" | ||
| ) | ||
|
|
||
| type FluxCDStatus struct { | ||
| Installed bool `json:"installed"` | ||
| Ready bool `json:"ready"` | ||
| Managed bool `json:"managed"` | ||
| Message string `json:"message,omitempty"` | ||
| } | ||
|
|
||
| func getFluxCDStatus(kc client.Client) (FluxCDStatus, error) { | ||
| status := FluxCDStatus{} | ||
| if err := checkFluxCRDRegistered(kc.RESTMapper()); err != nil { | ||
| if apierrors.IsNotFound(err) || meta.IsNoMatchError(err) { | ||
| status.Installed = false | ||
| status.Message = "FluxCD CRDs HelmReleases and HelmRepositories are not registered" | ||
| return status, nil | ||
| } | ||
| return status, err | ||
| } | ||
|
|
||
| var deployments apps.DeploymentList | ||
| err := kc.List(context.Background(), &deployments, client.MatchingLabels{ | ||
| "app.kubernetes.io/instance": "flux-system", | ||
| "app.kubernetes.io/part-of": "flux", | ||
| "control-plane": "controller", | ||
| }) | ||
| if err != nil { | ||
| return status, err | ||
| } | ||
| if len(deployments.Items) == 0 { | ||
| status.Installed = false | ||
| status.Message = "FluxCD deployments do not exist" | ||
| return status, nil | ||
| } | ||
|
|
||
| for _, deploy := range deployments.Items { | ||
| if deploy.Name == "source-controller" { | ||
| status.Installed = true | ||
| status.Managed = isFluxCDManaged(deploy.Spec.Template.Labels) | ||
|
|
||
| if deploy.Status.ReadyReplicas == 0 { | ||
| status.Ready = false | ||
| status.Message = "No ready replica found for deployment 'source-controller'" | ||
| return status, nil | ||
| } | ||
| } else if deploy.Name == "helm-controller" { | ||
| if deploy.Status.ReadyReplicas == 0 { | ||
| status.Ready = false | ||
| status.Message = "No ready replica found for deployment 'helm-controller'" | ||
| } | ||
| } | ||
| } | ||
| status.Ready = true | ||
|
|
||
| return status, nil | ||
| } | ||
|
|
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| func isFluxCDManaged(podLabels map[string]string) bool { | ||
| _, exists := podLabels[KeyACEManaged] | ||
| return exists | ||
| } | ||
|
|
||
| func checkFluxCRDRegistered(mapper meta.RESTMapper) error { | ||
| if _, err := mapper.RESTMappings(schema.GroupKind{ | ||
| Group: "helm.toolkit.fluxcd.io", | ||
| Kind: "HelmRelease", | ||
| }); err != nil { | ||
| return err | ||
| } | ||
| if _, err := mapper.RESTMappings(schema.GroupKind{ | ||
| Group: "source.toolkit.fluxcd.io", | ||
| Kind: "HelmRepository", | ||
| }); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } |
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