perf: cache SDK version metadata

openhands/automation/utils/version.py

@@ -1,6 +1,7 @@
 """Version metadata helpers for the automation service."""
 
 import importlib.metadata
+from functools import lru_cache
 from typing import TypedDict
 
 from openhands.automation import __version__
@@ -14,6 +15,7 @@ class ServerVersionInfo(TypedDict):
     sdk_version: str
 
 
+@lru_cache(maxsize=1)
 def get_sdk_version() -> str:
     return importlib.metadata.version(SDK_PACKAGE_NAME)
 

tests/test_version.py

@@ -0,0 +1,22 @@
+import importlib.metadata
+
+from openhands.automation.utils.version import SDK_PACKAGE_NAME, get_sdk_version
+
+
+def test_get_sdk_version_caches_package_metadata_lookup(monkeypatch):
+    calls = 0
+
+    def package_version(name: str) -> str:
+        nonlocal calls
+        calls += 1
+        assert name == SDK_PACKAGE_NAME
+        return "1.2.3"
+
+    monkeypatch.setattr(importlib.metadata, "version", package_version)
+    get_sdk_version.cache_clear()
+    try:
+        assert get_sdk_version() == "1.2.3"
+        assert get_sdk_version() == "1.2.3"
+        assert calls == 1
+    finally:
+        get_sdk_version.cache_clear()