54 lines
1.3 KiB
Go
54 lines
1.3 KiB
Go
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/*
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Copyright 2017 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 framework
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import (
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"bytes"
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"fmt"
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"os/exec"
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"k8s.io/api/core/v1"
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)
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// ExecCommand executes a command inside a the first container in a running pod
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func (f *Framework) ExecCommand(pod *v1.Pod, command string) (string, error) {
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var (
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execOut bytes.Buffer
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execErr bytes.Buffer
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)
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if len(pod.Spec.Containers) != 1 {
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return "", fmt.Errorf("could not determine which container to use")
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}
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args := fmt.Sprintf("kubectl exec -n %v %v -- %v", pod.Namespace, pod.Name, command)
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cmd := exec.Command("/bin/bash", "-c", args)
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cmd.Stdout = &execOut
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cmd.Stderr = &execErr
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err := cmd.Run()
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if err != nil {
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return "", fmt.Errorf("could not execute: %v", err)
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}
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if execErr.Len() > 0 {
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return "", fmt.Errorf("stderr: %v", execErr.String())
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}
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return execOut.String(), nil
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}
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