SERVER-102675 Bundle up codeowners tooling into bazel rule (#33854)

GitOrigin-RevId: f164862110f362cb2daee5cb41e39ce184ea5d27

buildscripts/bazel_rules_mongo/codeowners/validate_codeowners.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+"""Script for validating CODEOWNERS file."""
+
+import os
+import subprocess
+import sys
+
+
+def get_validator_env() -> dict:
+    """Prepare the environment for the codeowners-validator."""
+    env = os.environ.copy()
+
+    env.update(
+        {
+            "REPOSITORY_PATH": ".",
+            "CHECKS": "duppatterns,syntax",
+            "EXPERIMENTAL_CHECKS": "avoid-shadowing",
+        }
+    )
+    return env
+
+
+def run_validator(validator_path: str) -> int:
+    """Run the codeowners validation."""
+
+    if not os.path.isfile(validator_path):
+        raise RuntimeError(f"Validator was not found at input path: {validator_path}")
+
+    print(f"Using validator at: {validator_path}")
+    env = get_validator_env()
+
+    try:
+        result = subprocess.run(
+            [validator_path], env=env, check=True, capture_output=True, text=True
+        )
+        if result.stdout:
+            print(result.stdout)
+        return 0
+    except subprocess.CalledProcessError as exc:
+        if exc.stdout:
+            print(exc.stdout, file=sys.stderr)
+        if exc.stderr:
+            print(exc.stderr, file=sys.stderr)
+        return exc.returncode
+    except FileNotFoundError:
+        print("Error: Failed to run codeowners-validator after installation", file=sys.stderr)
+        return 1
+    except Exception:
+        raise