Attempt to handle ctrl+c

main.go

@@ -146,7 +146,7 @@ func main() {
 			tgSender, &wg, log.New(os.Stderr, "SendToTg", log.Lmicroseconds)))
 
 	for e := range FilterByIndex(FilterByType(
-		FilterByLastSeen(s.Events, "hs_wro_last_seen.bin", log.New(os.Stderr, "FilterByLastSeen", log.Lmicroseconds)),
+		FilterByLastSeen(CloseChanOnCtrlC(s.Events), "hs_wro_last_seen.bin", log.New(os.Stderr, "FilterByLastSeen", log.Lmicroseconds)),
 		allowedTypes),
 		allowedIndexes) {
 		logger.Print("Received change from SATEL: ", e)

satel_utils.go

@@ -3,6 +3,8 @@ package main
 import (
 	"errors"
 	"fmt"
+	"os"
+	"os/signal"
 
 	"github.com/probakowski/go-satel"
 )
@@ -91,6 +93,28 @@ var SATEL_STRING_TO_CHANGE_TYPE = map[string]satel.ChangeType{
 	"zone-isolate":                    satel.ZoneIsolate,
 }
 
+func CloseChanOnCtrlC(ev <-chan satel.Event) <-chan satel.Event {
+	returnChan := make(chan satel.Event)
+	exitSignal := make(chan os.Signal, 1)
+	signal.Notify(exitSignal, os.Interrupt)
+	go func() {
+		defer close(returnChan)
+	loop:
+		for {
+			select {
+			case <-exitSignal:
+				return
+			case e, ok := <-ev:
+				if !ok {
+					break loop
+				}
+				returnChan <- e
+			}
+		}
+	}()
+	return returnChan
+}
+
 func StringToSatelChangeType(s string) (satel.ChangeType, error) {
 	ct, ok := SATEL_STRING_TO_CHANGE_TYPE[s]
 	if !ok {