84 lines
2.3 KiB
Go
84 lines
2.3 KiB
Go
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// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// heapview is a tool for viewing Go heap dumps.
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package main
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import (
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"flag"
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"fmt"
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"go/build"
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"io"
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"log"
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"net/http"
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"os"
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"path/filepath"
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)
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var host = flag.String("host", "", "host addr to listen on")
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var port = flag.Int("port", 8080, "service port")
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var index = `<!DOCTYPE html>
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<script src="js/customelements.js"></script>
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<script src="js/typescript.js"></script>
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<script src="js/moduleloader.js"></script>
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<script>
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System.transpiler = 'typescript';
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System.typescriptOptions = {target: ts.ScriptTarget.ES2015};
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System.locate = (load) => load.name + '.ts';
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</script>
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<script type="module">
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import {main} from './client/main';
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main();
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</script>
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`
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func toolsDir() string {
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p, err := build.Import("golang.org/x/tools", "", build.FindOnly)
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if err != nil {
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log.Println("error: can't find client files:", err)
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os.Exit(1)
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}
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return p.Dir
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}
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var parseFlags = func() {
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flag.Parse()
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}
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var addHandlers = func() {
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toolsDir := toolsDir()
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// Directly serve typescript code in client directory for development.
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http.Handle("/client/", http.StripPrefix("/client",
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http.FileServer(http.Dir(filepath.Join(toolsDir, "cmd/heapview/client")))))
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// Serve typescript.js and moduleloader.js for development.
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http.HandleFunc("/js/typescript.js", func(w http.ResponseWriter, r *http.Request) {
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http.ServeFile(w, r, filepath.Join(toolsDir, "third_party/typescript/typescript.js"))
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})
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http.HandleFunc("/js/moduleloader.js", func(w http.ResponseWriter, r *http.Request) {
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http.ServeFile(w, r, filepath.Join(toolsDir, "third_party/moduleloader/moduleloader.js"))
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})
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http.HandleFunc("/js/customelements.js", func(w http.ResponseWriter, r *http.Request) {
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http.ServeFile(w, r, filepath.Join(toolsDir, "third_party/webcomponents/customelements.js"))
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})
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// Serve index.html using html string above.
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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w.Header().Set("Content-Type", "text/html")
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io.WriteString(w, index)
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})
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}
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var listenAndServe = func() error {
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return http.ListenAndServe(fmt.Sprintf("%s:%d", *host, *port), nil)
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}
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func main() {
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parseFlags()
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addHandlers()
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log.Fatal(listenAndServe())
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}
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