mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-01 14:05:39 +00:00
76 lines
2.4 KiB
Go
76 lines
2.4 KiB
Go
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package web
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import (
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"log"
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"net/http"
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"net/http/httputil"
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"net/url"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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)
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// startDevServer starts the JS dev server that does on-demand rebuilding
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// and serving of web client JS and CSS resources.
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func (s *Server) startDevServer() (cleanup func()) {
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root := gitRootDir()
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webClientPath := filepath.Join(root, "client", "web")
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yarn := filepath.Join(root, "tool", "yarn")
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node := filepath.Join(root, "tool", "node")
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vite := filepath.Join(webClientPath, "node_modules", ".bin", "vite")
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log.Printf("installing JavaScript deps using %s... (might take ~30s)", yarn)
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out, err := exec.Command(yarn, "--non-interactive", "-s", "--cwd", webClientPath, "install").CombinedOutput()
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if err != nil {
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log.Fatalf("error running tailscale web's yarn install: %v, %s", err, out)
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}
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log.Printf("starting JavaScript dev server...")
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cmd := exec.Command(node, vite)
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cmd.Dir = webClientPath
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cmd.Stdout = os.Stdout
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cmd.Stderr = os.Stderr
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if err := cmd.Start(); err != nil {
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log.Fatalf("Starting JS dev server: %v", err)
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}
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log.Printf("JavaScript dev server running as pid %d", cmd.Process.Pid)
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return func() {
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cmd.Process.Signal(os.Interrupt)
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err := cmd.Wait()
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log.Printf("JavaScript dev server exited: %v", err)
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}
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}
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func (s *Server) addProxyToDevServer() {
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if !s.devMode {
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return // only using Vite proxy in dev mode
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}
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// We use Vite to develop on the web client.
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// Vite starts up its own local server for development,
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// which we proxy requests to from Server.ServeHTTP.
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// Here we set up the proxy to Vite's server.
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handleErr := func(w http.ResponseWriter, r *http.Request, err error) {
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w.Header().Set("Content-Type", "text/plain")
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w.WriteHeader(http.StatusBadGateway)
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w.Write([]byte("The web client development server isn't running. " +
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"Run `./tool/yarn --cwd client/web start` from " +
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"the repo root to start the development server."))
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w.Write([]byte("\n\nError: " + err.Error()))
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}
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viteTarget, _ := url.Parse("http://127.0.0.1:4000")
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s.devProxy = httputil.NewSingleHostReverseProxy(viteTarget)
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s.devProxy.ErrorHandler = handleErr
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}
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func gitRootDir() string {
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top, err := exec.Command("git", "rev-parse", "--show-toplevel").Output()
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if err != nil {
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log.Fatalf("failed to find git top level (not in corp git?): %v", err)
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}
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return strings.TrimSpace(string(top))
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}
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