ami/tl-vikunja
1
0
Fork 0
Code

feat: add caching rules for more files

Browse Source
This commit is contained in:
kolaente 2024-02-09 13:39:55 +01:00
parent 4a66c2202f
commit b3228794c7
No known key found for this signature in database
GPG Key ID: F40E70337AB24C9B
1 changed files with 45 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
pkg/routes/static.go
View File

@ -25,6 +25,7 @@ const (
indexFile = `index.html`
rootPath = `dist/`
cacheControlMax = `max-age=315360000, public, max-age=31536000, s-maxage=31536000, immutable`
cacheControlNone = `public, max-age=0, s-maxage=0, must-revalidate`
)
// Because the files are embedded into the final binary, we can be absolutely sure the etag will never change
@ -132,38 +133,40 @@ func generateEtag(file http.File, name string) (etag string, err error) {
}
// copied from http.serveContent
func getMimeType(c echo.Context, name string, file http.File) (mimeType string, err error) {
var ctype string
ctype = c.Response().Header().Get("Content-Type")
if ctype == "" {
ctype = mime.TypeByExtension(filepath.Ext(name))
if ctype == "" {
func getMimeType(name string, file http.File) (mineType string, err error) {
mineType = mime.TypeByExtension(filepath.Ext(name))
if mineType == "" {
// read a chunk to decide between utf-8 text and binary
var buf [512]byte
n, _ := io.ReadFull(file, buf[:])
ctype = http.DetectContentType(buf[:n])
mineType = http.DetectContentType(buf[:n])
_, err := file.Seek(0, io.SeekStart) // rewind to output whole file
if err != nil {
return "", fmt.Errorf("seeker can't seek")
}
}
return mineType, nil
}
return ctype, nil
func getCacheControlHeader(info os.FileInfo, file http.File) (header string, err error) {
// Don't cache service worker and related files
if info.Name() == "robots.txt" ||
info.Name() == "sw.js" ||
info.Name() == "manifest.webmanifest" {
return cacheControlNone, nil
}
func serveFile(c echo.Context, file http.File, info os.FileInfo, etag string) error {
if strings.HasPrefix(info.Name(), "workbox-") {
return cacheControlMax, nil
}
c.Response().Header().Set("Server", "Vikunja")
c.Response().Header().Set("Vary", "Accept-Encoding")
c.Response().Header().Set("Etag", etag)
contentType, err := getMimeType(c, info.Name(), file)
contentType, err := getMimeType(info.Name(), file)
if err != nil {
return err
return "", err
}
var cacheControl = "public, max-age=0, s-maxage=0, must-revalidate"
// Cache everything looking like an asset
if strings.HasPrefix(contentType, "image/") ||
strings.HasPrefix(contentType, "font/") ||
strings.HasPrefix(contentType, "~images/") ||
@ -178,9 +181,22 @@ func serveFile(c echo.Context, file http.File, info os.FileInfo, etag string) er
contentType == "image/svg+xml" ||
contentType == "image/x-icon" ||
contentType == "audio/wav" {
cacheControl = cacheControlMax
return cacheControlMax, nil
}
return cacheControlNone, nil
}
func serveFile(c echo.Context, file http.File, info os.FileInfo, etag string) error {
c.Response().Header().Set("Server", "Vikunja")
c.Response().Header().Set("Vary", "Accept-Encoding")
c.Response().Header().Set("Etag", etag)
cacheControl, err := getCacheControlHeader(info, file)
if err != nil {
return err
}
c.Response().Header().Set("Cache-Control", cacheControl)
http.ServeContent(c.Response(), c.Request(), info.Name(), info.ModTime(), file)