pw_env_setup: Run npm install on bootstrap

Change-Id: Ia9c912c1ee7f03089efab6ce642a5793b0a8de98
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/184639
Reviewed-by: Rob Mohr <mohrr@google.com>
Commit-Queue: Asad Memon <asadmemon@google.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>

package.json

@@ -15,6 +15,7 @@
     "pw_protobuf_compiler": "./dist/bin/pw_protobuf_compiler.js"
   },
   "scripts": {
+    "postinstall": "cd pw_web/log-viewer && npm install --quiet --no-progress --loglevel=error",
     "prebuild": "rimraf dist && npm run build-protos",
     "build-protos": "ts-node -P tsconfig.json ts/buildprotos.ts",
     "build": "npm run rollup",

pigweed.json

@@ -66,6 +66,12 @@
       "root_variable": "PW_ROOT",
       "relative_pigweed_root": ".",
       "rosetta": "allow",
+      "project_actions": [
+        {
+          "import_path": "pw_env_setup",
+          "module_name": "npm_action"
+        }
+      ],
       "gni_file": "build_overrides/pigweed_environment.gni",
       "cipd_package_files": [
         "pw_env_setup/py/pw_env_setup/cipd_setup/upstream.json"

pw_env_setup/py/BUILD.gn

@@ -36,6 +36,7 @@ pw_python_package("py") {
     "pw_env_setup/environment.py",
     "pw_env_setup/gni_visitor.py",
     "pw_env_setup/json_visitor.py",
+    "pw_env_setup/npm_action.py",
     "pw_env_setup/python_packages.py",
     "pw_env_setup/shell_visitor.py",
     "pw_env_setup/spinner.py",

pw_env_setup/py/pw_env_setup/npm_action.py

@@ -0,0 +1,43 @@
+# Copyright 2023 The Pigweed Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License. You may obtain a copy of
+# the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations under
+# the License.
+"""NPM pw_env_setup action plugin.
+
+This action triggers `npm install` after CIPD setup.
+"""
+import subprocess
+import os
+import shutil
+
+
+def run_action(env=None):
+    """Project action to run 'npm install'."""
+    if not env:
+        raise ValueError(f"Missing 'env', got %{env}")
+
+    with env():
+        npm = shutil.which('npm')
+        repo_root = os.environ.get('PW_PROJECT_ROOT') or os.environ.get(
+            'PW_ROOT'
+        )
+        subprocess.run(
+            [
+                npm,
+                "install",
+                "--quiet",
+                "--no-progress",
+                "--loglevel=error",
+            ],
+            stdout=subprocess.PIPE,
+            cwd=repo_root,
+        )