Make application runnable

Signed-off-by: Steven Kriegler <61625851+justusbunsi@users.noreply.github.com>

cmd/gitea-sonarqube-bot/main.go

@@ -1,10 +1,13 @@
 package main
 
 import (
+	"log"
 	"os"
 	"path"
 
 	"gitea-sonarqube-pr-bot/internal/settings"
+	handler "gitea-sonarqube-pr-bot/internal/webhook_handler"
+	"github.com/urfave/cli/v2"
 )
 
 func getConfigLocation() string {
@@ -18,4 +21,16 @@ func getConfigLocation() string {
 
 func main() {
 	settings.Load(getConfigLocation())
+
+	app := &cli.App{
+		Name: "gitea-sonarqube-pr-bot",
+		Usage: "Improve your experience with SonarQube and Gitea",
+		Description: `By default, gitea-sonarqube-pr-bot will start running the webserver if no arguments are passed.`,
+		Action: handler.Serve,
+	}
+
+	err := app.Run(os.Args)
+	if err != nil {
+		log.Fatal(err)
+	}
 }

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6 // indirect
 	github.com/coreos/etcd v3.3.10+incompatible // indirect
 	github.com/coreos/go-etcd v2.0.0+incompatible // indirect
+	github.com/gorilla/mux v1.8.0 // indirect
 	github.com/spf13/viper v1.8.0 // indirect
 	github.com/stretchr/testify v1.7.0 // indirect
 	github.com/ugorji/go/codec v0.0.0-20181204163529-d75b2dcb6bc8 // indirect

go.sum

@@ -141,6 +141,8 @@ github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
+github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
+github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/consul/api v1.1.0/go.mod h1:VmuI/Lkw1nC05EYQWNKwWGbkg+FbDBtguAZLlVdkD9Q=
 github.com/hashicorp/consul/sdk v0.1.1/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyNV1vwHyQBF0x8=

internal/webhook_handler/main.go

@@ -0,0 +1,57 @@
+package webhook_handler
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+	"os/signal"
+	"time"
+
+	"github.com/gorilla/mux"
+	"github.com/urfave/cli/v2"
+)
+
+func Serve(c *cli.Context) error {
+	fmt.Println("Hi! I'm the Gitea-SonarQube-PR bot. At your service.")
+
+	var wait time.Duration
+	flag.DurationVar(&wait, "graceful-timeout", time.Second * 15, "the duration for which the server gracefully wait for existing connections to finish")
+	flag.Parse()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/hooks/sonarqube", NewSonarQubeWebhookHandler().Handle).Methods("POST").Headers("X-SonarQube-Project", "")
+
+	srv := &http.Server{
+		Addr: "0.0.0.0:8080",
+		// Good practice to set timeouts to avoid Slowloris attacks.
+		WriteTimeout: time.Second * 15,
+		ReadTimeout: time.Second * 15,
+		IdleTimeout: time.Second * 60,
+		Handler: r,
+	}
+
+	go func() {
+		log.Println("Listen on :8080")
+		if err := srv.ListenAndServe(); err != nil {
+			log.Println(err)
+		}
+	}()
+
+	ch := make(chan os.Signal, 1)
+	signal.Notify(ch, os.Interrupt)
+
+	// Block until we receive our signal.
+	<-ch
+
+	// Create a deadline to wait for.
+	ctx, cancel := context.WithTimeout(context.Background(), wait)
+	defer cancel()
+	srv.Shutdown(ctx)
+	log.Println("Shutting down webhook server")
+	os.Exit(0)
+
+	return nil
+}