Coverage for src / lexigram / admin / dashboard / naming_policy.py: 55%

1from __future__ import annotations 

2 

3import logging 

4from typing import Literal 

5 

6logger = logging.getLogger(__name__) 

7 

8 

9class NameCollisionError(Exception): 

10 """Raised when a name collision occurs in error mode.""" 

11 

12 

13class NamingPolicy: 

14 """Namespacing and collision detection for contributor surface names.""" 

15 

16 def __init__(self, mode: Literal["warn", "error"] = "warn") -> None: 

17 self._mode = mode 

18 self._seen: dict[str, dict[str, str]] = {} 

19 

20 def namespaced(self, package_source: str, name: str) -> str: 

21 """Prefix *name* with *package_source* unless already prefixed.""" 

22 prefix = f"{package_source}." 

23 if name.startswith(prefix): 

24 return name 

25 return f"{prefix}{name}" 

26 

27 def register(self, kind: str, name: str) -> None: 

28 """Record a name under *kind*; warn or raise on collision.""" 

29 if name in self._seen.setdefault(kind, {}): 

30 if self._mode == "error": 

31 raise NameCollisionError( 

32 f"collision on {kind} '{name}': " 

33 f"already registered by " 

34 f"'{self._seen[kind][name]}'" 

35 ) 

36 logger.warning( 

37 "collision on %s '%s'", 

38 kind, 

39 name, 

40 extra={"item_kind": kind, "item_name": name}, 

41 ) 

42 else: 

43 self._seen[kind][name] = name