126 lines
2.9 KiB
Go
126 lines
2.9 KiB
Go
package playout
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import (
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"bytes"
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"ffmpeg-playout/status"
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"fmt"
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"log"
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"net/http"
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"net/url"
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"os"
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"os/exec"
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"path"
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"strconv"
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"time"
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)
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type Job struct {
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ID int
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Version string
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StartAt time.Time
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StopAt time.Time
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Source string
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Output string
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ControlChannel chan string
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}
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type Config struct {
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PlayoutScriptPath string
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PlayoutScript string
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ProgressDir string
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PrometheusPushGateway string
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}
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//nolint:funlen
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func (p *Job) Playout(cfg *Config) {
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// TODO delete playout Job from store after finishing/aborting playout
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for {
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select {
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case ctrlMsg := <-p.ControlChannel:
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fmt.Println(ctrlMsg)
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continue
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case <-time.After(time.Until(p.StartAt)):
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log.Printf("Start Playout for %v", p.ID)
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progressPath := path.Join(cfg.ProgressDir, strconv.Itoa(p.ID))
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playoutScript := path.Join(cfg.PlayoutScriptPath, cfg.PlayoutScript)
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cmd := exec.Command(playoutScript, //nolint:gosec
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fmt.Sprintf("-i %v", p.Source),
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fmt.Sprintf("-o %v", p.Output),
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fmt.Sprintf("-p %v", progressPath),
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)
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cmd.Dir = cfg.PlayoutScriptPath
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err := cmd.Start()
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if err != nil {
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log.Printf("Failed to start Playout %v: %v", p.ID, err)
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}
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pid := cmd.Process.Pid
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log.Printf("PID for %v: %v", p.ID, pid)
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log.Println(cmd.Args)
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go func() {
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stats := make(chan status.Status)
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c := 0
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for {
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if c > 15 {
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return
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}
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if _, err := os.Stat("/path/to/whatever"); os.IsNotExist(err) {
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time.Sleep(1 * time.Second)
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c++
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continue
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}
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err := status.FFmpegStatusWatcher(stats, progressPath)
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if err != nil {
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log.Println(err)
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continue
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} else {
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break
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}
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}
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u, _ := url.Parse(cfg.PrometheusPushGateway)
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u.Path = path.Join(u.Path, "metrics", "job", "Decklink_Outputs", p.Output)
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c = 0
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for c < 4 {
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select {
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case stat := <-stats:
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metric := fmt.Sprintf("frame %v\n dup_frames %v\n bitrate %v\n fps %v\n speed %v\n", stat.Frame, stat.Dupframes, stat.Bitrate, stat.FPS, stat.Speed)
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resp, err := http.Post(u.Path, "text/plain", bytes.NewBuffer([]byte(metric)))
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if err != nil {
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log.Println(err)
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}
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log.Println(metric)
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defer resp.Body.Close()
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case <-time.After(4 * time.Second):
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c++
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continue
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}
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}
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}()
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ProcessManagement:
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for {
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select {
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case ctrlMsg := <-p.ControlChannel:
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log.Println(ctrlMsg)
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continue
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case <-time.After(time.Until(p.StopAt)):
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log.Printf("Kill %v", cmd.Process.Pid)
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err := cmd.Process.Kill()
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if err != nil {
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log.Printf("Failed to kill %v: %v", cmd.Process.Pid, err)
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}
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break ProcessManagement
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}
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}
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err = cmd.Wait()
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if err != nil {
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log.Println(err)
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}
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out, _ := cmd.CombinedOutput()
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log.Println(string(out))
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log.Println(cmd.ProcessState.ExitCode())
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log.Printf("Finish %v", p.ID)
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return
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}
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}
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}
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