fix(github-actions): remove bundled credential from bazel remote configuration

.prettierignore

@@ -2,7 +2,7 @@
 
 .github/local-actions/labels-sync/main.js
 .github/local-actions/lock-closed/main.js
-github-actions/bazel/configure-remote/configure-remote.cjs
+github-actions/bazel/configure-remote/main.js
 github-actions/branch-manager/main.js
 github-actions/browserstack/set-browserstack-env.cjs
 github-actions/pull-request-labeling/main.js

github-actions/bazel/configure-remote/BUILD.bazel

@@ -1,53 +1,19 @@
-load("@build_bazel_rules_nodejs//:index.bzl", "copy_to_bin", "generated_file_test", "nodejs_binary")
-load("//tools:defaults.bzl", "esbuild", "ts_library")
-load("//tools/node-to-shell-script:index.bzl", "nodejs_script_to_sh_script")
-
-copy_to_bin(
-    name = "gcp_token",
-    srcs = ["gcp_token.data"],
-)
+load("//tools:defaults.bzl", "esbuild_checked_in", "ts_library")
 
 ts_library(
     name = "setup-bazel-remote-exec",
     srcs = glob(["*.ts"]),
-    # TODO(devversion): Remove this when `ts_library` supports `.mts` extension.
-    devmode_module = "commonjs",
     deps = [
         "@npm//@actions/core",
         "@npm//@types/node",
     ],
 )
 
-nodejs_binary(
-    name = "encrypt",
-    data = [":setup-bazel-remote-exec"],
-    entry_point = ":encrypt.ts",
-)
-
-esbuild(
-    name = "bundle",
-    srcs = [":gcp_token"],
-    args = {
-        "loader": {
-            ".data": "binary",
-        },
-    },
+esbuild_checked_in(
+    name = "main",
     entry_point = "index.ts",
-    format = "iife",
-    minify = True,
-    sourcemap = "",
-    deps = [":setup-bazel-remote-exec"],
-)
-
-# TODO: determine if we can use the node script directly in github actions
-nodejs_script_to_sh_script(
-    name = "script",
-    bundle_file = ":bundle.js",
-    output_file = "script.sh",
-)
-
-generated_file_test(
-    name = "configure-remote",
-    src = "configure-remote.cjs",
-    generated = ":bundle.js",
+    target = "node20",
+    deps = [
+        ":setup-bazel-remote-exec",
+    ],
 )

github-actions/bazel/configure-remote/action.yml

@@ -22,4 +22,4 @@ inputs:
 
 runs:
   using: 'node20'
-  main: 'configure-remote.cjs'
+  main: 'main.js'

github-actions/bazel/configure-remote/index.ts

@@ -7,22 +7,23 @@
  */
 
 // @ts-ignore-next-line
-import tokenRaw from './gcp_token.data';
-import {k, iv, alg, at} from './constants.js';
-import {createDecipheriv} from 'crypto';
 import path from 'path';
 import fs from 'fs';
 import os from 'os';
-import {exportVariable, getBooleanInput, getInput} from '@actions/core';
+import {exportVariable, getBooleanInput, getInput, notice} from '@actions/core';
 
 async function main() {
   const isWindows = os.platform() === 'win32';
   const bazelRcPath = getInput('bazelrc', {required: false, trimWhitespace: true});
   const allowWindowsRbe = getBooleanInput('allow_windows_rbe', {required: true});
   const trustedBuild = getBooleanInput('trusted_build', {required: false});
-  const credential =
-    getInput('google_credential', {required: false, trimWhitespace: true}) ||
-    getEmbeddedCredential();
+  const credential = getInput('google_credential', {required: false, trimWhitespace: true});
+
+  // If no credential is provided, gracefully exit.
+  if (credential === '') {
+    notice('No credential was provided.', {title: 'Skipped setting up Bazel RBE'});
+    return;
+  }
 
   const destPath = isWindows
     ? path.join(process.env.APPDATA!, 'gcloud/application_default_credentials.json')
@@ -55,13 +56,6 @@ async function readFileGracefully(filePath: string): Promise<string> {
   }
 }
 
-/** Extract the embeeded credential from the action. */
-function getEmbeddedCredential(): string {
-  const t: Uint8Array = tokenRaw;
-  const dcip = createDecipheriv(alg, k, iv).setAuthTag(Buffer.from(at, 'base64'));
-  return dcip.update(t, undefined, 'utf8') + dcip.final('utf8');
-}
-
 main().catch((e) => {
   console.error(e);
   process.exitCode = 1;