Metadata (#251)

* recover middleware

* simplify Atoi

* metadata data prototype

* InterestingAttention

* resize itself

* Bump version to 0.9.4
Added some comments
Removed String() for Extraparams

* Add metadata test

* Fix CI

* Remove unnecessary tests

* Update file count

* use t.Run to get test case

---------

Co-authored-by: n0vad3v <n0vad3v@riseup.net>

.gitignore

@@ -25,3 +25,4 @@ remote-raw/
 coverage.txt
 .DS_Store
 /webp_server_go
+/metadata/*

config/config.go

@@ -3,7 +3,6 @@ package config
 import (
 	"encoding/json"
 	"flag"
-	"fmt"
 	"os"
 	"regexp"
 	"runtime"
@@ -59,10 +58,18 @@ var (
 	ProxyMode   bool
 	Prefetch    bool
 	Config      jsonFile
-	Version     = "0.9.3"
+	Version     = "0.9.4"
 	WriteLock   = cache.New(5*time.Minute, 10*time.Minute)
 )
 
+const Metadata = "metadata"
+
+type MetaFile struct {
+	Id       string `json:"id"`       // hash of below path️, also json file name id.webp
+	Path     string `json:"path"`     // local: path with width and height, proxy: full url
+	Checksum string `json:"checksum"` // hash of original file or hash(etag). Use this to identify changes
+}
+
 type jsonFile struct {
 	Host              string   `json:"HOST"`
 	Port              string   `json:"PORT"`
@@ -81,7 +88,6 @@ func init() {
 	flag.BoolVar(&DumpConfig, "dump-config", false, "Print sample config.json")
 	flag.BoolVar(&DumpSystemd, "dump-systemd", false, "Print sample systemd service file.")
 	flag.BoolVar(&ShowVersion, "V", false, "Show version information.")
-
 }
 
 func LoadConfig() {
@@ -100,11 +106,6 @@ type ExtraParams struct {
 	Height int // in px
 }
 
-// String : convert ExtraParams to string, used to generate cache path
-func (e *ExtraParams) String() string {
-	return fmt.Sprintf("_width=%d&height=%d", e.Width, e.Height)
-}
-
 func switchProxyMode() {
 	matched, _ := regexp.MatchString(`^https?://`, Config.ImgPath)
 	if matched {

config/config_test.go

@@ -1,8 +1,9 @@
 package config
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestMain(m *testing.M) {
@@ -21,15 +22,6 @@ func TestLoadConfig(t *testing.T) {
 	assert.Equal(t, Config.ExhaustPath, "./exhaust")
 }
 
-func TestExtraParamsString(t *testing.T) {
-	param := ExtraParams{
-		Width:  100,
-		Height: 100,
-	}
-	assert.Equal(t, param.String(), "_width=100&height=100")
-
-}
-
 func TestSwitchProxyMode(t *testing.T) {
 	switchProxyMode()
 	assert.False(t, ProxyMode)

encoder/encoder.go

@@ -4,9 +4,7 @@ import (
 	"errors"
 	"os"
 	"path"
-	"path/filepath"
 	"runtime"
-	"strings"
 	"sync"
 	"webp_server_go/config"
 	"webp_server_go/helper"
@@ -32,7 +30,7 @@ func init() {
 func resizeImage(img *vips.ImageRef, extraParams config.ExtraParams) error {
 	imgHeightWidthRatio := float32(img.Metadata().Height) / float32(img.Metadata().Width)
 	if extraParams.Width > 0 && extraParams.Height > 0 {
-		err := img.Thumbnail(extraParams.Width, extraParams.Height, 0)
+		err := img.Thumbnail(extraParams.Width, extraParams.Height, vips.InterestingAttention)
 		if err != nil {
 			return err
 		}
@@ -85,27 +83,20 @@ func ConvertFilter(raw, avifPath, webpPath string, extraParams config.ExtraParam
 	}
 }
 
+func ResizeItself(raw, dest string, extraParams config.ExtraParams) {
+	log.Infof("Resize %s itself to %s", raw, dest)
+	img, _ := vips.LoadImageFromFile(raw, &vips.ImportParams{
+		FailOnError: boolFalse,
+	})
+	_ = resizeImage(img, extraParams)
+	buf, _, _ := img.ExportNative()
+	_ = os.WriteFile(dest, buf, 0600)
+	img.Close()
+}
+
 func convertImage(raw, optimized, imageType string, extraParams config.ExtraParams) error {
-	// we don't have /path/to/tsuki.jpg.1582558990.webp, maybe we have /path/to/tsuki.jpg.1082008000.webp
-	// delete the old converted pic and convert a new one.
-	// optimized: /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp
-	// we'll delete file starts with /home/webp_server/exhaust/path/to/tsuki.jpg.ts.imageType
-	// If contain extraParams like tsuki.jpg?width=200, exhaust path will be /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp_width=200
-
-	s := strings.Split(path.Base(optimized), ".")
-	pattern := path.Join(path.Dir(optimized), s[0]+"."+s[1]+".*."+s[len(s)-1])
-
-	matches, err := filepath.Glob(pattern)
-	if err != nil {
-		log.Error(err.Error())
-	} else {
-		for _, p := range matches {
-			_ = os.Remove(p)
-		}
-	}
-
 	// we need to create dir first
-	err = os.MkdirAll(path.Dir(optimized), 0755)
+	var err = os.MkdirAll(path.Dir(optimized), 0755)
 	if err != nil {
 		log.Error(err.Error())
 	}

encoder/prefetch.go

@@ -5,7 +5,6 @@ import (
 	"os"
 	"path"
 	"path/filepath"
-	"strings"
 	"time"
 	"webp_server_go/config"
 	"webp_server_go/helper"
@@ -35,8 +34,8 @@ func PrefetchImages() {
 				return nil
 			}
 			// RawImagePath string, ImgFilename string, reqURI string
-			proposedURI := strings.Replace(picAbsPath, config.Config.ImgPath, "", 1)
-			avif, webp := helper.GenOptimizedAbsPath(picAbsPath, proposedURI, config.ExtraParams{Width: 0, Height: 0})
+			metadata := helper.ReadMetadata(picAbsPath, "")
+			avif, webp := helper.GenOptimizedAbsPath(metadata)
 			_ = os.MkdirAll(path.Dir(avif), 0755)
 			log.Infof("Prefetching %s", picAbsPath)
 			go ConvertFilter(picAbsPath, avif, webp, config.ExtraParams{Width: 0, Height: 0}, finishChan)

handler/remote.go

@@ -75,28 +75,21 @@ func downloadFile(filepath string, url string) {
 
 }
 
-func fetchRemoteImg(url string) string {
+func fetchRemoteImg(url string) config.MetaFile {
 	// url is https://test.webp.sh/mypic/123.jpg?someother=200&somebugs=200
-	// How do we know if the remote img is changed? we're using hash(url+etag) as key.
-	// if this exists in local system, means the remote img is not changed, we can use it directly.
-	// otherwise, we need to fetch it from remote and store it in local system.
+	// How do we know if the remote img is changed? we're using hash(etag+length)
 	log.Infof("Remote Addr is %s, pinging for info...", url)
-	// identifiable is etag + length
-	identifiable := pingURL(url)
-	// For store the remote raw image, /home/webp_server/remote-raw/3a42ab801f669d64-b8f999ab5acd69d03f5e904b1b84eb79210536
-	// Which 3a42ab801f669d64 is hash(url), b8f999ab5acd69d03f5e904b1b84eb79 is etag and 210536 is length
-	localRawImagePath := path.Join(config.RemoteRaw, helper.HashString(url)+"-"+identifiable)
+	etag := pingURL(url)
+	metadata := helper.ReadMetadata(url, etag)
+	localRawImagePath := path.Join(config.RemoteRaw, metadata.Id)
 
-	if helper.ImageExists(localRawImagePath) {
-		return localRawImagePath
-	} else {
-		// Temporary store of remote file.
-		cleanProxyCache(config.RemoteRaw + helper.HashString(url) + "*")
+	if !helper.ImageExists(localRawImagePath) || metadata.Checksum != helper.HashString(etag) {
+		// remote file has changed or local file not exists
 		log.Info("Remote file not found in remote-raw, re-fetching...")
+		cleanProxyCache(path.Join(config.Config.ExhaustPath, metadata.Id+"*"))
 		downloadFile(localRawImagePath, url)
-		return localRawImagePath
 	}
-
+	return metadata
 }
 
 func pingURL(url string) string {
@@ -117,7 +110,5 @@ func pingURL(url string) string {
 	if etag == "" {
 		log.Info("Remote didn't return etag in header when getRemoteImageInfo, please check.")
 	}
-	// Remove " from etag
-	etag = strings.ReplaceAll(etag, "\"", "")
 	return etag + length
 }

handler/router.go

@@ -3,7 +3,6 @@ package handler
 import (
 	"net/http"
 	"net/url"
-	"os"
 	"webp_server_go/config"
 	"webp_server_go/encoder"
 	"webp_server_go/helper"
@@ -40,31 +39,42 @@ func Convert(c *fiber.Ctx) error {
 	reqURI = path.Clean(reqURI)
 	reqURIwithQuery = path.Clean(reqURIwithQuery)
 
-	WidthInt, err := strconv.Atoi(c.Query("width"))
-	if err != nil {
-		WidthInt = 0
-	}
-	HeightInt, err := strconv.Atoi(c.Query("height"))
-	if err != nil {
-		HeightInt = 0
-	}
+	width, _ := strconv.Atoi(c.Query("width"))
+	height, _ := strconv.Atoi(c.Query("height"))
+
 	var extraParams = config.ExtraParams{
-		Width:  WidthInt,
-		Height: HeightInt,
+		Width:  width,
+		Height: height,
 	}
 
 	var rawImageAbs string
+	var metadata = config.MetaFile{}
 	if config.ProxyMode {
 		// this is proxyMode, we'll have to use this url to download and save it to local path, which also gives us rawImageAbs
 		// https://test.webp.sh/mypic/123.jpg?someother=200&somebugs=200
-		rawImageAbs = fetchRemoteImg(config.Config.ImgPath + reqURIwithQuery)
-
+		metadata = fetchRemoteImg(config.Config.ImgPath + reqURIwithQuery)
+		rawImageAbs = path.Join(config.RemoteRaw, metadata.Id)
 	} else {
 		// not proxyMode, we'll use local path
-		rawImageAbs = path.Join(config.Config.ImgPath, reqURI) // /home/xxx/mypic/123.jpg
+		metadata = helper.ReadMetadata(reqURIwithQuery, "")
+		rawImageAbs = path.Join(config.Config.ImgPath, reqURI)
+		// detect if source file has changed
+		if metadata.Checksum != helper.HashFile(rawImageAbs) {
+			log.Info("Source file has changed, re-encoding...")
+			helper.WriteMetadata(reqURIwithQuery, "")
+			cleanProxyCache(path.Join(config.Config.ExhaustPath, metadata.Id))
+		}
 	}
 
 	goodFormat := helper.GuessSupportedFormat(&c.Request().Header)
+	// resize itself and return if only one format(raw) is supported
+	if len(goodFormat) == 1 {
+		dest := path.Join(config.Config.ExhaustPath, metadata.Id)
+		if !helper.ImageExists(dest) {
+			encoder.ResizeItself(rawImageAbs, dest, extraParams)
+		}
+		return c.SendFile(dest)
+	}
 
 	// Check the original image for existence,
 	if !helper.ImageExists(rawImageAbs) {
@@ -75,11 +85,7 @@ func Convert(c *fiber.Ctx) error {
 		return nil
 	}
 
-	// generate with timestamp to make sure files are update-to-date
-	// If extraParams not enabled, exhaust path will be /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp
-	// If extraParams enabled, and given request at tsuki.jpg?width=200, exhaust path will be /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp_width=200&height=0
-	// If extraParams enabled, and given request at tsuki.jpg, exhaust path will be /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp_width=0&height=0
-	avifAbs, webpAbs := helper.GenOptimizedAbsPath(rawImageAbs, reqURI, extraParams)
+	avifAbs, webpAbs := helper.GenOptimizedAbsPath(metadata)
 	encoder.ConvertFilter(rawImageAbs, avifAbs, webpAbs, extraParams, nil)
 
 	var availableFiles = []string{rawImageAbs}
@@ -93,9 +99,7 @@ func Convert(c *fiber.Ctx) error {
 	}
 
 	finalFilename := helper.FindSmallestFiles(availableFiles)
-
-	buf, _ := os.ReadFile(finalFilename)
-	contentType := helper.GetFileContentType(buf)
+	contentType := helper.GetFileContentType(finalFilename)
 	c.Set("Content-Type", contentType)
 
 	c.Set("X-Compression-Rate", helper.GetCompressionRate(rawImageAbs, finalFilename))

helper/helper.go

@@ -1,7 +1,6 @@
 package helper
 
 import (
-	"bytes"
 	"fmt"
 	"os"
 	"path"
@@ -10,34 +9,25 @@ import (
 	"time"
 	"webp_server_go/config"
 
-	"github.com/cespare/xxhash"
 	"github.com/h2non/filetype"
+
+	"github.com/cespare/xxhash"
 	"github.com/valyala/fasthttp"
 
 	log "github.com/sirupsen/logrus"
 )
 
-var _ = filetype.AddMatcher(filetype.NewType("avif", "image/avif"), avifMatcher)
-
-func avifMatcher(buf []byte) bool {
-	// use hexdump on macOS to see the magic number
-	// 0000001c 66747970 61766966 00000000 61766966 6d696631 6d696166
-	magicHeader := []byte{
-		0x0, 0x0, 0x0, 0x1c,
-		0x66, 0x74, 0x79, 0x70,
-		0x61, 0x76, 0x69, 0x66,
-		0x0, 0x0, 0x0, 0x0,
-		0x61, 0x76, 0x69, 0x66,
-		0x6d, 0x69, 0x66, 0x31,
-		0x6d, 0x69, 0x61, 0x66,
+func GetFileContentType(filename string) string {
+	if strings.HasSuffix(filename, ".webp") {
+		return "image/webp"
+	} else if strings.HasSuffix(filename, ".avif") {
+		return "image/avif"
+	} else {
+		// raw image, need to use filetype to determine
+		buf, _ := os.ReadFile(filename)
+		kind, _ := filetype.Match(buf)
+		return kind.MIME.Value
 	}
-
-	return len(buf) > 1 && bytes.Equal(buf[:28], magicHeader) || strings.Contains(string(buf), "ftypavif")
-}
-
-func GetFileContentType(buffer []byte) string {
-	kind, _ := filetype.Match(buffer)
-	return kind.MIME.Value
 }
 
 func FileCount(dir string) int64 {
@@ -99,37 +89,11 @@ func CheckAllowedType(imgFilename string) bool {
 	return false
 }
 
-func GenOptimizedAbsPath(rawImagePath, reqURI string, extraParams config.ExtraParams) (string, string) {
-	// imageName is not needed, we can use reqURI
-	// get file mod time
-	var (
-		imageName   = path.Base(reqURI)
-		exhaustPath = config.Config.ExhaustPath
-	)
-	STAT, err := os.Stat(rawImagePath)
-	if err != nil {
-		log.Error(err.Error())
-		return "", ""
-	}
-	ModifiedTime := STAT.ModTime().Unix()
-	// TODO: just hash it?
-	// webpFilename: abc.jpg.png -> abc.jpg.png.1582558990.webp
-	webpFilename := fmt.Sprintf("%s.%d.webp", imageName, ModifiedTime)
-	// avifFilename: abc.jpg.png -> abc.jpg.png.1582558990.avif
-	avifFilename := fmt.Sprintf("%s.%d.avif", imageName, ModifiedTime)
-
-	// If extraParams not enabled, exhaust path will be /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp
-	// If extraParams enabled, and given request at tsuki.jpg?width=200, exhaust path will be /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp_width=200&height=0
-	// If extraParams enabled, and given request at tsuki.jpg, exhaust path will be /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp_width=0&height=0
-	if config.Config.EnableExtraParams {
-		webpFilename = webpFilename + extraParams.String()
-		avifFilename = avifFilename + extraParams.String()
-	}
-
-	// /home/webp_server/exhaust/path/to/tsuki.jpg.1582558990.webp
-	// Custom Exhaust: /path/to/exhaust/web_path/web_to/tsuki.jpg.1582558990.webp
-	webpAbsolutePath := path.Clean(path.Join(exhaustPath, path.Dir(reqURI), webpFilename))
-	avifAbsolutePath := path.Clean(path.Join(exhaustPath, path.Dir(reqURI), avifFilename))
+func GenOptimizedAbsPath(metadata config.MetaFile) (string, string) {
+	webpFilename := fmt.Sprintf("%s.webp", metadata.Id)
+	avifFilename := fmt.Sprintf("%s.avif", metadata.Id)
+	webpAbsolutePath := path.Clean(path.Join(config.Config.ExhaustPath, webpFilename))
+	avifAbsolutePath := path.Clean(path.Join(config.Config.ExhaustPath, avifFilename))
 	return avifAbsolutePath, webpAbsolutePath
 }
 
@@ -214,3 +178,8 @@ func HashString(uri string) string {
 	// xxhash supports cross compile
 	return fmt.Sprintf("%x", xxhash.Sum64String(uri))
 }
+
+func HashFile(filepath string) string {
+	buf, _ := os.ReadFile(filepath)
+	return fmt.Sprintf("%x", xxhash.Sum64(buf))
+}

helper/helper_test.go

@@ -18,7 +18,7 @@ func TestMain(m *testing.M) {
 func TestFileCount(t *testing.T) {
 	// test helper dir
 	count := FileCount("./")
-	assert.Equal(t, int64(3), count)
+	assert.Equal(t, int64(4), count)
 }
 
 func TestImageExists(t *testing.T) {
@@ -26,10 +26,6 @@ func TestImageExists(t *testing.T) {
 		assert.False(t, ImageExists("dgyuaikdsa"))
 	})
 
-	t.Run("file size incorrect", func(t *testing.T) {
-		assert.False(t, ImageExists("test.txt"))
-	})
-
 	// TODO: how to test lock?
 
 	t.Run("test dir", func(t *testing.T) {
@@ -43,7 +39,7 @@ func TestImageExists(t *testing.T) {
 
 func TestCheckAllowedType(t *testing.T) {
 	t.Run("not allowed type", func(t *testing.T) {
-		assert.False(t, CheckAllowedType("test.txt"))
+		assert.False(t, CheckAllowedType("./helper_test.go"))
 	})
 
 	t.Run("allowed type", func(t *testing.T) {

helper/metadata.go

@@ -0,0 +1,70 @@
+package helper
+
+import (
+	"encoding/json"
+	"net/url"
+	"os"
+	"path"
+	"webp_server_go/config"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func getId(p string) (string, string, string) {
+	var id string
+	if config.ProxyMode {
+		return HashString(p), "", ""
+	}
+	parsed, _ := url.Parse(p)
+	width := parsed.Query().Get("width")
+	height := parsed.Query().Get("height")
+	// santizedPath will be /webp_server.jpg?width=200\u0026height= in local mode when requesting /webp_server.jpg?width=200
+	// santizedPath will be https://docs.webp.sh/images/webp_server.jpg?width=400 in proxy mode when requesting /images/webp_server.jpg?width=400 with IMG_PATH = https://docs.webp.sh
+	santizedPath := parsed.Path + "?width=" + width + "&height=" + height
+	id = HashString(santizedPath)
+
+	return id, path.Join(config.Config.ImgPath, parsed.Path), santizedPath
+}
+
+func ReadMetadata(p, etag string) config.MetaFile {
+	// try to read metadata, if we can't read, create one
+	var metadata config.MetaFile
+	var id, _, _ = getId(p)
+
+	buf, err := os.ReadFile(path.Join(config.Metadata, id+".json"))
+	if err != nil {
+		log.Warnf("can't read metadata: %s", err)
+		WriteMetadata(p, etag)
+		return ReadMetadata(p, etag)
+	}
+
+	err = json.Unmarshal(buf, &metadata)
+	if err != nil {
+		log.Warnf("unmarshal metadata error, possible corrupt file, re-building...: %s", err)
+		WriteMetadata(p, etag)
+		return ReadMetadata(p, etag)
+	}
+	return metadata
+}
+
+func WriteMetadata(p, etag string) config.MetaFile {
+	_ = os.Mkdir(config.Metadata, 0755)
+
+	var id, filepath, sant = getId(p)
+
+	var data = config.MetaFile{
+		Id: id,
+	}
+
+	if config.ProxyMode {
+		data.Path = p
+		data.Checksum = HashString(etag)
+	} else {
+		data.Path = sant
+		data.Checksum = HashFile(filepath)
+	}
+
+	buf, _ := json.Marshal(data)
+	_ = os.WriteFile(path.Join(config.Metadata, data.Id+".json"), buf, 0644)
+	return data
+}

helper/metadata_test.go

@@ -0,0 +1,43 @@
+package helper
+
+import (
+	"net/url"
+	"path"
+	"testing"
+	"webp_server_go/config"
+)
+
+func TestGetId(t *testing.T) {
+	p := "https://example.com/image.jpg?width=200&height=300"
+
+	t.Run("proxy mode", func(t *testing.T) {
+		// Test case 1: Proxy mode
+		config.ProxyMode = true
+		id, jointPath, santizedPath := getId(p)
+
+		// Verify the return values
+		expectedId := HashString(p)
+		expectedPath := ""
+		expectedSantizedPath := ""
+		if id != expectedId || jointPath != expectedPath || santizedPath != expectedSantizedPath {
+			t.Errorf("Test case 1 failed: Expected (%s, %s, %s), but got (%s, %s, %s)",
+				expectedId, expectedPath, expectedSantizedPath, id, jointPath, santizedPath)
+		}
+	})
+	t.Run("non-proxy mode", func(t *testing.T) {
+		// Test case 2: Non-proxy mode
+		config.ProxyMode = false
+		p = "/image.jpg?width=400&height=500"
+		id, jointPath, santizedPath := getId(p)
+
+		// Verify the return values
+		parsed, _ := url.Parse(p)
+		expectedId := HashString(parsed.Path + "?width=400&height=500")
+		expectedPath := path.Join(config.Config.ImgPath, parsed.Path)
+		expectedSantizedPath := parsed.Path + "?width=400&height=500"
+		if id != expectedId || jointPath != expectedPath || santizedPath != expectedSantizedPath {
+			t.Errorf("Test case 2 failed: Expected (%s, %s, %s), but got (%s, %s, %s)",
+				expectedId, expectedPath, expectedSantizedPath, id, jointPath, santizedPath)
+		}
+	})
+}

helper/test.txt

@@ -1 +0,0 @@
-not an image

webp-server.go

@@ -12,6 +12,7 @@ import (
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/middleware/etag"
 	"github.com/gofiber/fiber/v2/middleware/logger"
+	"github.com/gofiber/fiber/v2/middleware/recover"
 	log "github.com/sirupsen/logrus"
 )
 
@@ -41,7 +42,8 @@ func setupLogger() {
 		Format:     config.FiberLogFormat,
 		TimeFormat: config.TimeDateFormat,
 	}))
-	log.Infoln("Logger ready.")
+	app.Use(recover.New(recover.Config{}))
+	log.Infoln("fiber ready.")
 }
 
 func init() {
@@ -59,7 +61,7 @@ func main() {
 ▙▚▌▛▀ ▌ ▌▌   ▖ ▌▛▀ ▌  ▐▐ ▛▀ ▌   ▌ ▌▌ ▌
 ▘ ▘▝▀▘▀▀ ▘   ▝▀ ▝▀▘▘   ▘ ▝▀▘▘   ▝▀ ▝▀
 
-Webp Server Go - v%s
+WebP Server Go - v%s
 Develop by WebP Server team. https://github.com/webp-sh`, config.Version)
 
 	// process cli params
@@ -88,7 +90,7 @@ Develop by WebP Server team. https://github.com/webp-sh`, config.Version)
 	app.Get("/*", handler.Convert)
 
 	fmt.Printf("\n %c[1;32m%s%c[0m\n\n", 0x1B, banner, 0x1B)
-	fmt.Println("Webp Server Go is Running on http://" + listenAddress)
+	fmt.Println("WebP Server Go is Running on http://" + listenAddress)
 
 	_ = app.Listen(listenAddress)