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55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package polymorphichelpers
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import (
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"fmt"
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"sort"
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"time"
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corev1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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corev1client "k8s.io/client-go/kubernetes/typed/core/v1"
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"k8s.io/kubernetes/pkg/kubectl/util/podutils"
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)
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// attachablePodForObject returns the pod to which to attach given an object.
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func attachablePodForObject(restClientGetter genericclioptions.RESTClientGetter, object runtime.Object, timeout time.Duration) (*corev1.Pod, error) {
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switch t := object.(type) {
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case *corev1.Pod:
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return t, nil
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}
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clientConfig, err := restClientGetter.ToRESTConfig()
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if err != nil {
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return nil, err
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}
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clientset, err := corev1client.NewForConfig(clientConfig)
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if err != nil {
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return nil, err
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}
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namespace, selector, err := SelectorsForObject(object)
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if err != nil {
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return nil, fmt.Errorf("cannot attach to %T: %v", object, err)
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}
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sortBy := func(pods []*corev1.Pod) sort.Interface { return sort.Reverse(podutils.ActivePods(pods)) }
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pod, _, err := GetFirstPod(clientset, namespace, selector.String(), timeout, sortBy)
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return pod, err
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}
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