80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"log"
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
|
|
"gitlab.com/gomidi/midi/v2"
|
|
_ "gitlab.com/gomidi/midi/v2/drivers/rtmididrv"
|
|
)
|
|
|
|
const (
|
|
serviceName = "midi-request-trigger"
|
|
serviceDescription = "Takes trigger MIDI messages by HTTP or MQTT requests and trigger HTTP or MQTT requests by MIDI messages"
|
|
serviceVersion = "0.3"
|
|
)
|
|
|
|
// App is the global application structure for communicating between servers and storing information.
|
|
type App struct {
|
|
flags *Flags
|
|
config *Config
|
|
http *HTTPServer
|
|
}
|
|
|
|
var app *App
|
|
|
|
func main() {
|
|
app = new(App)
|
|
app.ParseFlags()
|
|
app.ReadConfig()
|
|
app.http = NewHTTPServer()
|
|
|
|
// Make sure midi drivers are closed when the app closes.
|
|
defer midi.CloseDriver()
|
|
|
|
// If no routers defined, or request to list devices.
|
|
if app.flags.ListMidiDevices || len(app.config.MidiRouters) == 0 {
|
|
// If no routers are defined, print notice about configuring one.
|
|
if len(app.config.MidiRouters) == 0 {
|
|
log.Println("No routers configured, please configure one.")
|
|
}
|
|
// Print available devices.
|
|
fmt.Printf("MIDI in ports\n")
|
|
fmt.Println(midi.GetInPorts())
|
|
fmt.Printf("\n\nMIDI out ports\n")
|
|
fmt.Println(midi.GetOutPorts())
|
|
fmt.Printf("\n\n")
|
|
return
|
|
}
|
|
|
|
// Connect to each router and and setup HTTP handlers.
|
|
for _, router := range app.config.MidiRouters {
|
|
router.Connect()
|
|
for _, trig := range router.RequestTriggers {
|
|
app.http.mux.HandleFunc(trig.URI, router.Handler)
|
|
}
|
|
}
|
|
|
|
// Setup context with cancellation function to allow background services to gracefully stop.
|
|
ctx, ctxCancel := context.WithCancel(context.Background())
|
|
// Start listening on HTTP server.
|
|
app.http.Start(ctx)
|
|
|
|
// Monitor common signals.
|
|
c := make(chan os.Signal, 1)
|
|
signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
|
|
// Wait for a signal.
|
|
<-c
|
|
// Stop HTTP server.
|
|
ctxCancel()
|
|
|
|
// Disconnect all MIDI listeners.
|
|
for _, router := range app.config.MidiRouters {
|
|
router.Disconnect()
|
|
}
|
|
}
|