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67 lines
1.2 KiB
67 lines
1.2 KiB
package process
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import (
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"bytes"
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"context"
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"os/exec"
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)
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type Process struct {
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cmd *exec.Cmd
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cancel context.CancelFunc
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errorOutput *bytes.Buffer
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stdOutput *bytes.Buffer
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beforeStopHandler func()
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stopped bool
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}
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func New(path string, params []string) *Process {
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return NewWithEnvs(path, params, nil)
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}
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func NewWithEnvs(path string, params []string, envs []string) *Process {
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ctx, cancel := context.WithCancel(context.Background())
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cmd := exec.CommandContext(ctx, path, params...)
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cmd.Env = envs
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p := &Process{
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cmd: cmd,
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cancel: cancel,
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}
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p.errorOutput = bytes.NewBufferString("")
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p.stdOutput = bytes.NewBufferString("")
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cmd.Stderr = p.errorOutput
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cmd.Stdout = p.stdOutput
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return p
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}
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func (p *Process) Start() error {
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return p.cmd.Start()
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}
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func (p *Process) Stop() error {
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if p.stopped {
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return nil
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}
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defer func() {
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p.stopped = true
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}()
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if p.beforeStopHandler != nil {
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p.beforeStopHandler()
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}
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p.cancel()
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return p.cmd.Wait()
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}
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func (p *Process) ErrorOutput() string {
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return p.errorOutput.String()
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}
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func (p *Process) StdOutput() string {
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return p.stdOutput.String()
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}
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func (p *Process) SetBeforeStopHandler(fn func()) {
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p.beforeStopHandler = fn
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}
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