From b6247d0d7790bd45a79e2f699af0c37db8d0c890 Mon Sep 17 00:00:00 2001
From: Alex Shoop <alexander.shoop@datarobot.com>
Date: Wed, 24 Sep 2025 10:27:22 +0900
Subject: [PATCH] code cov test script check_fastuuid_usage.py

---
 .../check_fastuuid_usage.py                   | 87 +++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 tests/code_coverage_tests/check_fastuuid_usage.py

diff --git a/tests/code_coverage_tests/check_fastuuid_usage.py b/tests/code_coverage_tests/check_fastuuid_usage.py
new file mode 100644
index 0000000000..e043345437
--- /dev/null
+++ b/tests/code_coverage_tests/check_fastuuid_usage.py
@@ -0,0 +1,87 @@
+import ast
+import os
+from typing import List, Dict, Any
+
+
+ALLOWED_FILE = os.path.normpath("litellm/_uuid.py")
+
+
+def _to_module_path(relative_path: str) -> str:
+    module = os.path.splitext(relative_path)[0].replace(os.sep, ".")
+    if module.endswith(".__init__"):
+        return module[: -len(".__init__")]
+    return module
+
+
+def _find_fastuuid_imports_in_file(
+    file_path: str, base_dir: str
+) -> List[Dict[str, Any]]:
+    results: List[Dict[str, Any]] = []
+    try:
+        with open(file_path, "r", encoding="utf-8") as f:
+            source = f.read()
+        tree = ast.parse(source, filename=file_path)
+    except Exception:
+        return results
+
+    relative = os.path.normpath(os.path.relpath(file_path, base_dir))
+    if relative == ALLOWED_FILE:
+        return results
+
+    module = _to_module_path(relative)
+    for node in ast.walk(tree):
+        if isinstance(node, ast.Import):
+            for alias in node.names:
+                if alias.name == "fastuuid":
+                    results.append(
+                        {
+                            "file": relative,
+                            "line": getattr(node, "lineno", 0),
+                            "import": f"import {alias.name}",
+                            "module": module,
+                        }
+                    )
+        elif isinstance(node, ast.ImportFrom) and node.module == "fastuuid":
+            names = ", ".join([a.name for a in node.names])
+            results.append(
+                {
+                    "file": relative,
+                    "line": getattr(node, "lineno", 0),
+                    "import": f"from fastuuid import {names}",
+                    "module": module,
+                }
+            )
+
+    return results
+
+
+def scan_directory_for_fastuuid(base_dir: str) -> List[Dict[str, Any]]:
+    violations: List[Dict[str, Any]] = []
+    scan_root = os.path.join(base_dir, "litellm")
+    for root, _, files in os.walk(scan_root):
+        for filename in files:
+            if filename.endswith(".py"):
+                file_path = os.path.join(root, filename)
+                violations.extend(_find_fastuuid_imports_in_file(file_path, base_dir))
+    return violations
+
+
+def main() -> None:
+    base_dir = "."  # tests run from repo root in CI
+    violations = scan_directory_for_fastuuid(base_dir)
+    if violations:
+        print(
+            "\n🚨 fastuuid must only be imported inside litellm/_uuid.py. Found violations:"
+        )
+        for v in violations:
+            print(f"* {v['module']} ({v['file']}:{v['line']}) -> {v['import']}")
+        print("\n")
+        raise Exception(
+            "Found fastuuid imports outside litellm/_uuid.py. Use litellm._uuid.uuid or litellm._uuid.uuid4 instead."
+        )
+    else:
+        print("✅ No invalid fastuuid imports found.")
+
+
+if __name__ == "__main__":
+    main()