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@@ -0,0 +1,95 @@
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+// Copyright (c) Tailscale Inc & AUTHORS
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+// SPDX-License-Identifier: BSD-3-Clause
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+
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+// The build-webclient tool generates the static resources needed for the
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+// web client (code at client/web).
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+//
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+// # Running
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+//
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+// Meant to be invoked from the tailscale/web-client-prebuilt repo when
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+// updating the production built web client assets. To run it manually,
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+// you can use `./tool/go run ./misc/build-webclient`
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+package main
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+
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+import (
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+ "flag"
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+ "fmt"
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+ "log"
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+ "os"
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+ "os/exec"
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+ "path/filepath"
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+
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+ "tailscale.com/util/precompress"
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+)
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+
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+var (
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+ outDir = flag.String("outDir", "build/", "path to output directory")
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+)
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+
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+func main() {
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+ flag.Parse()
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+
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+ // The toolDir flag is relative to the current working directory,
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+ // so we need to resolve it to an absolute path.
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+ toolDir, err := filepath.Abs("./tool")
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+ if err != nil {
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+ log.Fatalf("Cannot resolve tool-dir: %v", err)
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+ }
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+
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+ if err := build(toolDir, "client/web"); err != nil {
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+ log.Fatalf("%v", err)
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+ }
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+}
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+
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+func build(toolDir, appDir string) error {
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+ if err := os.Chdir(appDir); err != nil {
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+ return fmt.Errorf("Cannot change cwd: %w", err)
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+ }
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+
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+ if err := yarn(toolDir); err != nil {
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+ return fmt.Errorf("install failed: %w", err)
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+ }
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+
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+ if err := yarn(toolDir, "lint"); err != nil {
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+ return fmt.Errorf("lint failed: %w", err)
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+ }
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+
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+ if err := yarn(toolDir, "build", "--outDir="+*outDir, "--emptyOutDir"); err != nil {
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+ return fmt.Errorf("build failed: %w", err)
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+ }
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+
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+ var compressedFiles []string
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+ if err := precompress.PrecompressDir(*outDir, precompress.Options{
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+ ProgressFn: func(path string) {
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+ log.Printf("Pre-compressing %v\n", path)
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+ compressedFiles = append(compressedFiles, path)
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+ },
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+ }); err != nil {
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+ return fmt.Errorf("Cannot precompress: %w", err)
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+ }
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+
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+ // Cleanup pre-compressed files.
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+ for _, f := range compressedFiles {
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+ if err := os.Remove(f); err != nil {
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+ log.Printf("Failed to cleanup %q: %v", f, err)
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+ }
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+ // Removing intermediate ".br" version, we use ".gz" asset.
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+ if err := os.Remove(f + ".br"); err != nil {
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+ log.Printf("Failed to cleanup %q: %v", f+".gz", err)
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+ }
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+ }
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+
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+ return nil
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+}
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+
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+func yarn(toolDir string, args ...string) error {
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+ args = append([]string{"--silent", "--non-interactive"}, args...)
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+ return run(filepath.Join(toolDir, "yarn"), args...)
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+}
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+
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+func run(name string, args ...string) error {
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+ cmd := exec.Command(name, args...)
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+ cmd.Stdout = os.Stdout
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+ cmd.Stderr = os.Stderr
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+ return cmd.Run()
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+}
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Sonia Appasamy