57 lines
1.4 KiB
Go
57 lines
1.4 KiB
Go
package dns
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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"os/exec"
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"strings"
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"k8s.io/klog/v2"
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)
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func Execute(shell string, arg ...string) (bool, error) {
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var outb, errb bytes.Buffer
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cmd := exec.Command(shell, arg...)
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cmd.Dir = AcmeDir
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cmd.Stdout = &outb
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cmd.Stderr = &errb
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klog.Infof("cmd: %s\n", cmd.String())
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err := cmd.Run()
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outstr := strings.TrimSuffix(outb.String(), "\n")
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errstr := strings.TrimSuffix(errb.String(), "\n")
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klog.Infof("out:\n%s\n", outstr)
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if err != nil {
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klog.Errorf("Script returned error:\nerr:\n")
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klog.Errorf("%s\n============\n", err)
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return false, err
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}
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if errb.String() != "" {
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klog.Infof("stderr:\n")
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klog.Errorf("%s\n============\n", errstr)
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return false, fmt.Errorf("stderr:\n%q", errstr)
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}
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klog.Infof("Script returned success\n")
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return true, nil
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}
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// https://blog.kowalczyk.info/article/wOYk/advanced-command-execution-in-go-with-osexec.html
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func Execute2(shell string, arg ...string) (bool, error) {
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var stdoutBuf, stderrBuf bytes.Buffer
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cmd := exec.Command(shell, arg...)
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cmd.Stdout = io.MultiWriter(os.Stdout, &stdoutBuf)
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cmd.Stderr = io.MultiWriter(os.Stderr, &stderrBuf)
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err := cmd.Run()
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if err != nil {
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klog.Errorf("Script returned error:\nerr:\n")
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klog.Errorf("%s\n============\n", err)
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return false, err
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}
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outStr, errStr := string(stdoutBuf.String()), string(stderrBuf.String())
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fmt.Printf("\nout:\n%s\nerr:\n%s\n", outStr, errStr)
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klog.Infof("Script returned success\n")
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return true, nil
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}
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