Added signal handling

golangServer/testing.go

@@ -7,6 +7,9 @@ import (
 	"fmt"
 	"log"
 	"net/http"
+	"os"
+	"os/signal"
+	"syscall"
 
 	"github.com/jmoiron/sqlx"
 	_ "github.com/mattn/go-sqlite3"
@@ -72,6 +75,13 @@ var lang_codes []string = []string{
 
 var db *sqlx.DB
 
+func cleanup() {
+	db.Close()
+	log.Printf("Shutting down...\n")
+	return
+}
+
+
 /*
 	Returns the cached translation from the database, for the given english text. The first parameter
 
@@ -168,13 +178,28 @@ func handler(w http.ResponseWriter, r *http.Request) {
 }
 
 func main() {
-	fmt.Printf("Starting server...")
+	log.Printf("Starting server...")
 	var err error
 	db, err = sqlx.Connect("sqlite3", "../translations.db")
 	if err != nil {
 		panic(err)
 	}
 	defer db.Close()
+	// Catch signal
+	sigs := make(chan os.Signal, 1)
+	signal.Notify(sigs)
+	go func() {
+		for sig := range sigs {
+			log.Printf("Received signal: %s", sig)
+			switch sig {
+			case syscall.SIGURG:
+				log.Printf("Ignoring sigurg")
+			case syscall.SIGTERM, syscall.SIGINT:
+				cleanup()
+				os.Exit(1)
+			}
+		}
+	}()
 
 	http.HandleFunc("/", handler)
 	log.Fatal(http.ListenAndServe(":9090", nil))