gzip IDE index

This commit is contained in:
Liang Ding 2014-12-09 11:51:14 +08:00
parent fac3adc11b
commit ed40c5b5f6
1 changed files with 52 additions and 1 deletions

53
main.go
View File

@ -15,8 +15,10 @@
package main
import (
"compress/gzip"
"flag"
"html/template"
"io"
"math/rand"
"mime"
"net/http"
@ -240,7 +242,7 @@ func main() {
defer glog.Flush()
// IDE
http.HandleFunc("/", handlerWrapper(indexHandler))
http.HandleFunc("/", handlerGzWrapper(indexHandler))
http.HandleFunc("/start", handlerWrapper(startHandler))
http.HandleFunc("/about", handlerWrapper(aboutHandler))
http.HandleFunc("/keyboard_shortcuts", handlerWrapper(keyboardShortcutsHandler))
@ -326,6 +328,39 @@ func handlerWrapper(f func(w http.ResponseWriter, r *http.Request)) func(w http.
return handler
}
// handlerGzWrapper wraps the HTTP Handler for some common processes.
//
// 1. panic recover
// 2. gzip response
// 3. request stopwatch
// 4. i18n
func handlerGzWrapper(f func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
handler := panicRecover(f)
handler = gzipWrapper(handler)
handler = stopwatch(handler)
handler = i18nLoad(handler)
return handler
}
// gzipWrapper wraps the process with response gzip.
func gzipWrapper(f func(http.ResponseWriter, *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
f(w, r)
return
}
w.Header().Set("Content-Encoding", "gzip")
gz := gzip.NewWriter(w)
defer gz.Close()
gzr := gzipResponseWriter{Writer: gz, ResponseWriter: w}
f(gzr, r)
}
}
// i18nLoad wraps the i18n process.
func i18nLoad(handler func(w http.ResponseWriter, r *http.Request)) func(w http.ResponseWriter, r *http.Request) {
return func(w http.ResponseWriter, r *http.Request) {
@ -365,3 +400,19 @@ func initMime() {
mime.AddExtensionType(".js", "application/x-javascript")
mime.AddExtensionType(".json", "application/json")
}
// gzipResponseWriter represents a gzip response writer.
type gzipResponseWriter struct {
io.Writer
http.ResponseWriter
}
// Write writes response with appropriate 'Content-Type'.
func (w gzipResponseWriter) Write(b []byte) (int, error) {
if "" == w.Header().Get("Content-Type") {
// If no content type, apply sniffing algorithm to un-gzipped body.
w.Header().Set("Content-Type", http.DetectContentType(b))
}
return w.Writer.Write(b)
}