// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// heapview is a tool for viewing Go heap dumps.
package main
import (
"flag"
"fmt"
"io"
"log"
"net/http"
"os"
"path/filepath"
)
var host = flag.String("host", "", "host addr to listen on")
var port = flag.Int("port", 8080, "service port")
var index = `
`
func toolsDir() string {
gopath := os.Getenv("GOPATH")
if gopath == "" {
log.Println("error: GOPATH not set. Can't find client files")
os.Exit(1)
}
return filepath.Join(filepath.SplitList(gopath)[0], "src/golang.org/x/tools")
}
var parseFlags = func() {
flag.Parse()
}
var addHandlers = func() {
// Directly serve typescript code in client directory for development.
http.Handle("/client/", http.StripPrefix("/client",
http.FileServer(http.Dir(filepath.Join(toolsDir(), "cmd/heapview/client")))))
// Serve typescript.js and moduleloader.js for development.
http.HandleFunc("/js/typescript.js", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, filepath.Join(toolsDir(), "third_party/typescript/typescript.js"))
})
http.HandleFunc("/js/moduleloader.js", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, filepath.Join(toolsDir(), "third_party/moduleloader/moduleloader.js"))
})
http.HandleFunc("/js/customelements.js", func(w http.ResponseWriter, r *http.Request) {
http.ServeFile(w, r, filepath.Join(toolsDir(), "third_party/webcomponents/customelements.js"))
})
// Serve index.html using html string above.
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/html")
io.WriteString(w, index)
})
}
var listenAndServe = func() error {
return http.ListenAndServe(fmt.Sprintf("%s:%d", *host, *port), nil)
}
func main() {
parseFlags()
addHandlers()
log.Fatal(listenAndServe())
}