| /* |
| Copyright 2016 The Kubernetes Authors. |
| |
| 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. |
| */ |
| |
| // Note: the example only works with the code within the same release/branch. |
| package main |
| |
| import ( |
| "fmt" |
| "time" |
| |
| "k8s.io/apimachinery/pkg/api/errors" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/client-go/kubernetes" |
| "k8s.io/client-go/rest" |
| ) |
| |
| func main() { |
| // creates the in-cluster config |
| config, err := rest.InClusterConfig() |
| if err != nil { |
| panic(err.Error()) |
| } |
| // creates the clientset |
| clientset, err := kubernetes.NewForConfig(config) |
| if err != nil { |
| panic(err.Error()) |
| } |
| for { |
| pods, err := clientset.CoreV1().Pods("").List(metav1.ListOptions{}) |
| if err != nil { |
| panic(err.Error()) |
| } |
| fmt.Printf("There are %d pods in the cluster\n", len(pods.Items)) |
| |
| // Examples for error handling: |
| // - Use helper functions like e.g. errors.IsNotFound() |
| // - And/or cast to StatusError and use its properties like e.g. ErrStatus.Message |
| _, err = clientset.CoreV1().Pods("default").Get("example-xxxxx", metav1.GetOptions{}) |
| if errors.IsNotFound(err) { |
| fmt.Printf("Pod not found\n") |
| } else if statusError, isStatus := err.(*errors.StatusError); isStatus { |
| fmt.Printf("Error getting pod %v\n", statusError.ErrStatus.Message) |
| } else if err != nil { |
| panic(err.Error()) |
| } else { |
| fmt.Printf("Found pod\n") |
| } |
| |
| time.Sleep(10 * time.Second) |
| } |
| } |