| /* |
| Copyright 2018 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. |
| */ |
| |
| package polymorphichelpers |
| |
| import ( |
| "errors" |
| "fmt" |
| "os" |
| "sort" |
| "time" |
| |
| "k8s.io/api/core/v1" |
| corev1 "k8s.io/api/core/v1" |
| "k8s.io/apimachinery/pkg/runtime" |
| "k8s.io/cli-runtime/pkg/genericclioptions" |
| corev1client "k8s.io/client-go/kubernetes/typed/core/v1" |
| "k8s.io/client-go/rest" |
| "k8s.io/kubernetes/pkg/kubectl/util/podutils" |
| ) |
| |
| func logsForObject(restClientGetter genericclioptions.RESTClientGetter, object, options runtime.Object, timeout time.Duration, allContainers bool) ([]*rest.Request, error) { |
| clientConfig, err := restClientGetter.ToRESTConfig() |
| if err != nil { |
| return nil, err |
| } |
| |
| clientset, err := corev1client.NewForConfig(clientConfig) |
| if err != nil { |
| return nil, err |
| } |
| return logsForObjectWithClient(clientset, object, options, timeout, allContainers) |
| } |
| |
| // TODO: remove internal clientset once all callers use external versions |
| // this is split for easy test-ability |
| func logsForObjectWithClient(clientset corev1client.CoreV1Interface, object, options runtime.Object, timeout time.Duration, allContainers bool) ([]*rest.Request, error) { |
| opts, ok := options.(*corev1.PodLogOptions) |
| if !ok { |
| return nil, errors.New("provided options object is not a PodLogOptions") |
| } |
| |
| switch t := object.(type) { |
| case *corev1.PodList: |
| ret := []*rest.Request{} |
| for i := range t.Items { |
| currRet, err := logsForObjectWithClient(clientset, &t.Items[i], options, timeout, allContainers) |
| if err != nil { |
| return nil, err |
| } |
| ret = append(ret, currRet...) |
| } |
| return ret, nil |
| |
| case *corev1.Pod: |
| // if allContainers is true, then we're going to locate all containers and then iterate through them. At that point, "allContainers" is false |
| if !allContainers { |
| return []*rest.Request{clientset.Pods(t.Namespace).GetLogs(t.Name, opts)}, nil |
| } |
| |
| ret := []*rest.Request{} |
| for _, c := range t.Spec.InitContainers { |
| currOpts := opts.DeepCopy() |
| currOpts.Container = c.Name |
| currRet, err := logsForObjectWithClient(clientset, t, currOpts, timeout, false) |
| if err != nil { |
| return nil, err |
| } |
| ret = append(ret, currRet...) |
| } |
| for _, c := range t.Spec.Containers { |
| currOpts := opts.DeepCopy() |
| currOpts.Container = c.Name |
| currRet, err := logsForObjectWithClient(clientset, t, currOpts, timeout, false) |
| if err != nil { |
| return nil, err |
| } |
| ret = append(ret, currRet...) |
| } |
| |
| return ret, nil |
| } |
| |
| namespace, selector, err := SelectorsForObject(object) |
| if err != nil { |
| return nil, fmt.Errorf("cannot get the logs from %T: %v", object, err) |
| } |
| |
| sortBy := func(pods []*v1.Pod) sort.Interface { return podutils.ByLogging(pods) } |
| pod, numPods, err := GetFirstPod(clientset, namespace, selector.String(), timeout, sortBy) |
| if err != nil { |
| return nil, err |
| } |
| if numPods > 1 { |
| fmt.Fprintf(os.Stderr, "Found %v pods, using pod/%v\n", numPods, pod.Name) |
| } |
| |
| return logsForObjectWithClient(clientset, pod, options, timeout, allContainers) |
| } |