Speed up activate changes II: Compute UUID and hostname from UUID lin…

…k only once

SUP-21229

Change-Id: I7f48854cc7e040e9bee60811ce53bc0d3760024b

cmk/utils/agent_registration.py

@@ -9,7 +9,7 @@
 from collections.abc import Container, Iterator, Mapping, Sequence
 from os.path import relpath
 from pathlib import Path
-from typing import Any, NamedTuple
+from typing import Any, Final
 from uuid import UUID
 
 import cmk.utils.paths
@@ -43,17 +43,12 @@ def connection_mode_from_host_config(
     )
 
 
-class UUIDLink(NamedTuple):
-    source: Path
-    target: Path
-
-    @property
-    def uuid(self) -> UUID:
-        return UUID(self.source.name)
-
-    @property
-    def hostname(self) -> HostName:
-        return HostName(self.target.name)
+class UUIDLink:
+    def __init__(self, *, source: Path, target: Path) -> None:
+        self.source: Final = source
+        self.target: Final = target
+        self.uuid: Final = UUID(self.source.name)
+        self.hostname: Final = HostName(self.target.name)
 
     def unlink(self) -> None:
         self.source.unlink(missing_ok=True)

tests/unit/cmk/utils/test_agent_registration.py

@@ -29,7 +29,10 @@
 class TestUUIDLink:
     @pytest.fixture
     def link(self, tmp_path: Path) -> UUIDLink:
-        return UUIDLink(tmp_path / "59e631e9-de89-40d6-9662-ba54569a24fb", tmp_path / "hostname")
+        return UUIDLink(
+            source=tmp_path / "59e631e9-de89-40d6-9662-ba54569a24fb",
+            target=tmp_path / "hostname",
+        )
 
     def test_uuid(self, link: UUIDLink) -> None:
         assert isinstance(link.uuid, UUID)