more controlling, more config options

config.example.yml

@@ -6,3 +6,6 @@ outputs:
 
 address: ":3000"
 default_duration: "15m"
+playoutscript: "decklink_playout.sh"
+playoutscriptpath: "/path/to/ffmpeg-scripts/playout"
+tmpdir: "/tmp"

go.mod

@@ -6,8 +6,8 @@ require (
 	github.com/andybalholm/brotli v1.0.1 // indirect
 	github.com/fsnotify/fsnotify v1.4.9
 	github.com/gofiber/fiber/v2 v2.1.3
-	github.com/google/uuid v1.1.2
 	github.com/ilyakaznacheev/cleanenv v1.2.5
+	github.com/json-iterator/go v1.1.10
 	github.com/klauspost/compress v1.11.2 // indirect
 	gopkg.in/yaml.v2 v2.3.0 // indirect
 	olympos.io/encoding/edn v0.0.0-20201019073823-d3554ca0b0a3 // indirect

go.sum

@@ -4,20 +4,33 @@ github.com/andybalholm/brotli v1.0.0 h1:7UCwP93aiSfvWpapti8g88vVVGp2qqtGyePsSuDa
 github.com/andybalholm/brotli v1.0.0/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
 github.com/andybalholm/brotli v1.0.1 h1:KqhlKozYbRtJvsPrrEeXcO+N2l6NYT5A2QAFmSULpEc=
 github.com/andybalholm/brotli v1.0.1/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/gofiber/fiber/v2 v2.1.3 h1:d2fkRf6fkLa1uXgzXqN5iqAydjytoocS83hm1o00Ocg=
 github.com/gofiber/fiber/v2 v2.1.3/go.mod h1:MMiSv1HrDkN8Pv7NeVDYK+T/lwXOEKAvPBbLvJPCEfA=
-github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
+github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/ilyakaznacheev/cleanenv v1.2.5 h1:/SlcF9GaIvefWqFJzsccGG/NJdoaAwb7Mm7ImzhO3DM=
 github.com/ilyakaznacheev/cleanenv v1.2.5/go.mod h1:/i3yhzwZ3s7hacNERGFwvlhwXMDcaqwIzmayEhbRplk=
 github.com/joho/godotenv v1.3.0 h1:Zjp+RcGpHhGlrMbJzXTrZZPrWj+1vfm90La1wgB6Bhc=
 github.com/joho/godotenv v1.3.0/go.mod h1:7hK45KPybAkOC6peb+G5yklZfMxEjkZhHbwpqxOKXbg=
+github.com/json-iterator/go v1.1.10 h1:Kz6Cvnvv2wGdaG/V8yMvfkmNiXq9Ya2KUv4rouJJr68=
+github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
 github.com/klauspost/compress v1.10.7 h1:7rix8v8GpI3ZBb0nSozFRgbtXKv+hOe+qfEpZqybrAg=
 github.com/klauspost/compress v1.10.7/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
 github.com/klauspost/compress v1.11.2 h1:MiK62aErc3gIiVEtyzKfeOHgW7atJb5g/KNX5m3c2nQ=
 github.com/klauspost/compress v1.11.2/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 h1:ZqeYNhU3OHLH3mGKHDcjJRFFRrJa6eAM5H+CtDdOsPc=
+github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 h1:Esafd1046DLDQ0W1YjYsBW+p8U2u7vzgW2SQVmlNazg=
+github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasthttp v1.16.0 h1:9zAqOYLl8Tuy3E5R6ckzGDJ1g8+pw15oQp2iL9Jl6gQ=

main.go

@@ -8,20 +8,35 @@ import (
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/cors"
 	"github.com/ilyakaznacheev/cleanenv"
+	jsoniter "github.com/json-iterator/go"
 	"log"
 	"time"
 )
 
+var json = jsoniter.ConfigCompatibleWithStandardLibrary
+
 type Config struct {
-	Outputs         []string `yaml:"outputs"`
+	Outputs           []string `yaml:"outputs"`
-	Address         string   `yaml:"address" env:"ADDRESS" env-default:":3000"`
+	Address           string   `yaml:"address" env:"ADDRESS" env-default:":3000"`
-	DefaultDuration string   `yaml:"default_duration" env:"DEFAULT_DURATION" env-default:"15"`
+	DefaultDuration   string   `yaml:"default_duration" env:"DEFAULT_DURATION" env-default:"15"`
+	PlayoutScript     string   `yaml:"playoutscript"`
+	PlayoutScriptPath string   `yaml:"playoutscriptpath" env:""`
+	ProgressDir       string   `yaml:"tmpdir"`
 }
 
 type Job struct {
-	StartAt string `json:"startAt,omitempty"`
+	StartAt time.Time `json:"startAt,omitempty"`
-	StopAt  string `json:"stopAt,omitempty"`
+	StopAt  time.Time `json:"stopAt,omitempty"`
-	Source  string `json:"source"`
+	Source  string    `json:"source"`
+	ID      int       `json:"id"`
+	Version string    `json:"version"`
+}
+
+type ScheduledJob struct {
+	ID      int    `json:"id"`
+	Port    string `json:"port"`
+	Room    string `json:"room"`
+	Version string `json:"version"`
 }
 
 func schedulePlayout(s *store.Store) fiber.Handler {
@@ -29,45 +44,56 @@ func schedulePlayout(s *store.Store) fiber.Handler {
 	return func(c *fiber.Ctx) error {
 		var p playout.Job
 		job := new(Job)
-		var err error
+
-		if err := c.BodyParser(job); err != nil {
+		jsonErr := json.Unmarshal(c.Body(), job)
-			log.Println("got defective request: ", err)
+		if jsonErr != nil {
+			log.Println("got defective request: ", jsonErr)
 			c.SendStatus(400)
-			return err
+			return jsonErr
 		}
 
 		if job.Source == "" {
 			c.SendStatus(400)
 			return errors.New("Got Empty Source. I can't play »Nothing«")
 		}
+
+		p.ID = job.ID
 		p.Source = job.Source
-
+		p.Version = job.Version
-		if p.StartAt, err = time.Parse(time.RFC3339, job.StartAt); err != nil {
+		p.StartAt = job.StartAt
-			log.Println("got strange date: ", job.StartAt, "; error:", err)
+		if job.StopAt.IsZero() {
-			c.SendStatus(400)
-			return err
-		}
-
-		if job.StopAt != "" {
-			if p.StopAt, err = time.Parse(time.RFC3339, job.StopAt); err != nil {
-				log.Println("got strange date: ", job.StopAt, "; error:", err)
-				c.SendStatus(400)
-				return err
-			}
-		} else {
 			p.StopAt = p.StartAt.Add(s.DefaultDuration)
+		} else {
+			p.StopAt = job.StopAt
 		}
 
-		s.Lock()
+		var output string
-		uid, err := s.AddPlayout(&p)
+		s.RLock()
-		s.Unlock()
+		oldPlayout, playoutExists := s.Playouts[job.ID]
-		if err != nil {
+		s.RUnlock()
-			c.SendStatus(500)
+		if playoutExists {
-			return fmt.Errorf("can not schedule playout: %s", err)
+			oldPlayout.ControlChannel <- "reschedule"
+			output = oldPlayout.Output
+		} else {
+			var err error
+			s.Lock()
+			output, err = s.AddPlayout(&p)
+			s.Unlock()
+			if err != nil {
+				c.SendStatus(500)
+				return fmt.Errorf("can not schedule playout: %s", err)
+			}
 		}
-		c.SendString(uid.String())
 
-		go p.Playout()
+		c.JSON(ScheduledJob{
+			ID:      p.ID,
+			Port:    output,
+			Version: p.Version,
+		})
+		go func() {
+			p.Playout(s.Config)
+			s.DeletePlayout(p.ID)
+		}()
 
 		// staus 409 when no schedule possible
 
@@ -83,7 +109,7 @@ func main() {
 		log.Fatal("No configfile: ", err)
 	}
 
-	s, err := store.NewStore(cfg.Outputs, cfg.DefaultDuration)
+	s, err := store.NewStore(cfg.Outputs, cfg.DefaultDuration, cfg.PlayoutScriptPath, cfg.PlayoutScript, cfg.ProgressDir)
 	if err != nil {
 		log.Fatal("Failed to init Store: ", err.Error())
 	}

playout/playout.go

@@ -3,18 +3,14 @@ package playout
 import (
 	"fmt"
 	"log"
+	"os/exec"
+	"path"
 	"time"
 )
 
-type PlayoutType int
-
-const (
-	rtmpPlayout PlayoutType = iota
-	icecastPlayout
-)
-
 type Job struct {
-	PlayoutType    PlayoutType
+	ID             int
+	Version        string
 	StartAt        time.Time
 	StopAt         time.Time
 	Source         string
@@ -22,14 +18,56 @@ type Job struct {
 	ControlChannel chan string
 }
 
-func (p *Job) Playout() {
+type Config struct {
+	PlayoutScriptPath string
+	PlayoutScript     string
+	ProgressDir       string
+}
+
+func (p *Job) Playout(cfg *Config) {
 	// TODO delete playout Job from store after finishing/aborting playout
-	log.Println(time.Until(p.StartAt))
+	for {
-	select {
+		log.Println(p.StartAt)
-	case ctrlMsg := <-p.ControlChannel:
+		log.Println(time.Until(p.StartAt))
-		fmt.Println(ctrlMsg)
+		select {
-		return
+		case ctrlMsg := <-p.ControlChannel:
-	case <-time.After(time.Until(p.StartAt)):
+			fmt.Println(ctrlMsg)
-		log.Println("Start Playout")
+			continue
+		case <-time.After(time.Until(p.StartAt)):
+			log.Println("Start Playout")
+			progressPath := path.Join(cfg.ProgressDir, string(p.ID))
+			playoutScript := path.Join(cfg.PlayoutScriptPath, cfg.PlayoutScript)
+			cmd := exec.Command(playoutScript, //nolint:gosec
+				fmt.Sprintf("-i %v", p.Source),
+				fmt.Sprintf("-o %v", p.Output),
+				fmt.Sprintf("-p %v", progressPath),
+			)
+			cmd.Dir = cfg.PlayoutScriptPath
+
+			err := cmd.Start()
+			if err != nil {
+				log.Printf("Failed to start Playout %v: %v", p.ID, err)
+			}
+			pid := cmd.Process.Pid
+			log.Printf("PID for %v: %v", p.ID, pid)
+		ProcessManagement:
+			for {
+				select {
+				case ctrlMsg := <-p.ControlChannel:
+					log.Println(ctrlMsg)
+					continue
+				case <-time.After(time.Until(p.StopAt)):
+					cmd.Process.Kill()
+					break ProcessManagement
+				}
+			}
+			err = cmd.Wait()
+			if err != nil {
+				log.Println(err)
+			}
+			log.Println(cmd.ProcessState.ExitCode())
+			log.Printf("Finish %v", p.ID)
+			break
+		}
 	}
 }

store/store.go

@@ -3,35 +3,38 @@ package store
 import (
 	"errors"
 	"ffmpeg-playout/playout"
-	"fmt"
-	"github.com/google/uuid"
 	"log"
 	"sync"
 	"time"
 )
 
 type Store struct {
-	Playouts        map[uuid.UUID]*playout.Job
+	Playouts        map[int]*playout.Job
 	DefaultDuration time.Duration
 	Outputs         []string
+	*playout.Config
 	sync.RWMutex
 }
 
-func NewStore(o []string, defaultDuration string) (*Store, error) {
+func NewStore(o []string, defaultDuration string, playoutScriptPath string, playoutScript string, tmpDir string) (*Store, error) {
-	playouts := make(map[uuid.UUID]*playout.Job)
+	playouts := make(map[int]*playout.Job)
 
 	var d time.Duration
 	var err error
 	if d, err = time.ParseDuration(defaultDuration); err != nil {
 		log.Fatal("Failed to set Default Duration: ", err)
 	}
-
+	pcfg := playout.Config{
-	store := &Store{Playouts: playouts, DefaultDuration: d, Outputs: o}
+		PlayoutScriptPath: playoutScriptPath,
+		PlayoutScript:     playoutScript,
+		ProgressDir:       tmpDir,
+	}
+	store := &Store{Playouts: playouts, DefaultDuration: d, Outputs: o, Config: &pcfg}
 
 	return store, nil
 }
 
-func (s *Store) AddPlayout(p *playout.Job) (uuid.UUID, error) {
+func (s *Store) AddPlayout(p *playout.Job) (string, error) {
 	outputs := s.Outputs
 	for _, value := range s.Playouts {
 		if len(outputs) != 0 &&
@@ -49,15 +52,17 @@ func (s *Store) AddPlayout(p *playout.Job) (uuid.UUID, error) {
 	if len(outputs) != 0 {
 		output = outputs[0]
 	} else {
-		return uuid.Nil, errors.New("no output available")
+		return "", errors.New("no output available")
-	}
-	uid, err := uuid.NewUUID()
-	if err != nil {
-		return uuid.Nil, fmt.Errorf("couldn't generate uuid: %s", err.Error())
 	}
 	p.Output = output
-	s.Playouts[uid] = p
+	s.Playouts[p.ID] = p
-	return uid, nil
+	return output, nil
+}
+
+func (s *Store) DeletePlayout(id int) {
+	s.Lock()
+	delete(s.Playouts, id)
+	s.Unlock()
 }
 
 //https://stackoverflow.com/a/15323988/10997297

types.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+	"time"
+)
+
+type Timestamp time.Time
+
+func (t *Timestamp) MarshalJSON() ([]byte, error) {
+	ts := time.Time(*t).Unix()
+	stamp := fmt.Sprint(ts)
+	return []byte(stamp), nil
+}
+
+func (t *Timestamp) UnmarshalJSON(b []byte) error {
+	ts, err := strconv.Atoi(string(b))
+	if err != nil {
+		return err
+	}
+	*t = Timestamp(time.Unix(int64(ts), 0))
+	return nil
+}
+
+func (t *Timestamp) String() string {
+	return time.Time(*t).String()
+}