Add landmine support

Add support for landmines to node-ci.
This is a prerequisite to switch to node in-tree gn config files.

Bug: v8:14572

Change-Id: I4194bd4e9dfaa8b1f1ca5b858f40bb724b025386
Reviewed-on: https://chromium-review.googlesource.com/c/v8/node-ci/+/5212069
Reviewed-by: Victor Gomes <victorgomes@chromium.org>
Commit-Queue: Patrick Thier <pthier@chromium.org>

Author: pthier

.gitignore

@@ -12,3 +12,4 @@
 
 # Generated
 /node_files.json
+/.landmines

DEPS

@@ -164,6 +164,19 @@ deps = {
 }
 
 hooks = [
+  {
+    # This clobbers when necessary (based on get_landmines.py). It must be the
+    # first hook so that other things that get/generate into the output
+    # directory will not subsequently be clobbered.
+    'name': 'landmines',
+    'pattern': '.',
+    'action': [
+        'python3',
+        'node-ci/build/landmines.py',
+        '--landmine-scripts',
+        'node-ci/tools/get_landmines.py',
+    ],
+  },
   {
     'name': 'generate_node_filelist',
     'pattern': 'node-ci/node',

tools/get_landmines.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+# Copyright 2024 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+This file emits the list of reasons why a particular build needs to be clobbered
+(or a list of 'landmines').
+"""
+
+import os
+import sys
+
+sys.path.insert(0, os.path.abspath(
+  os.path.join(os.path.dirname(__file__), '..', 'build')))
+
+import get_landmines as build_get_landmines
+
+
+def print_landmines():  # pylint: disable=invalid-name
+  """
+  ALL LANDMINES ARE EMITTED FROM HERE.
+  """
+  # DO NOT add landmines as part of a regular CL. Landmines are a last-effort
+  # bandaid fix if a CL that got landed has a build dependency bug and all bots
+  # need to be cleaned up. If you're writing a new CL that causes build
+  # dependency problems, fix the dependency problems instead of adding a
+  # landmine.
+  # See the Chromium version in src/build/get_landmines.py for usage examples.
+  build_get_landmines.print_landmines()
+  return 0
+
+
+def main():
+  print_landmines()
+  return 0
+
+
+if __name__ == '__main__':
+  sys.exit(main())