64 lines
1.2 KiB
Go
64 lines
1.2 KiB
Go
package liquidsoap
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import (
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"fmt"
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"os"
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"os/exec"
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"syscall"
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"time"
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"github.com/pkg/errors"
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)
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var ErrNotRunning = errors.New("liquidsoap is not running")
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type Liquidsoap struct {
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command *exec.Cmd
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}
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func NewLiquidsoap(liquidsoapPath, scriptPath string) (*Liquidsoap, error) {
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cmd := exec.Command(liquidsoapPath, scriptPath)
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if err := cmd.Start(); err != nil {
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return nil, err
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}
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// If there are errors in a script this time will be sufficient to wait
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// for them to occure.
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time.Sleep(4 * time.Second)
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if _, err := os.FindProcess(cmd.Process.Pid); err != nil {
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stderr, _ := cmd.StderrPipe()
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var stderr_content string
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fmt.Fscanln(stderr, &stderr_content)
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if err_wait := cmd.Wait(); err != nil {
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return nil, errors.Wrapf(err_wait, "%s: %s", err.Error(), stderr_content)
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}
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return nil, errors.Wrapf(err, "%s: %s", err.Error(), stderr_content)
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}
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return &Liquidsoap{
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command: cmd}, nil
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}
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func (l *Liquidsoap) Stop() error {
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if !l.IsRunning() {
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return ErrNotRunning
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}
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if err := l.command.Process.Signal(syscall.SIGINT); err != nil {
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return err
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}
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if err := l.command.Wait(); err != nil {
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return err
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}
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return nil
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}
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func (l *Liquidsoap) IsRunning() bool {
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return l.command.Process != nil && l.command.ProcessState == nil
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}
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