codeant-ai-for-open-source[bot] commented on code in PR #45100:
URL: https://github.com/apache/superset/pull/45100#discussion_r4235495806
##########
superset/semantic_layers/models.py:
##########
@@ -166,6 +168,55 @@ class ColumnMetadata:
extra: str | None = None
+_METADATA_IDENTITY_KEY: str = "semantic_layer_cache_identity"
+
+
+@dataclass
+class _MetadataCacheIdentity:
+ """Session-local identities, captured before discovery and forgotten on
Save."""
+
+ tokens: dict[uuid.UUID, str] = field(default_factory=dict)
+
+ @classmethod
+ def for_session(cls, session: Session) -> _MetadataCacheIdentity:
+ """Keep the memo's storage convention in one place."""
+ if _METADATA_IDENTITY_KEY not in session.info:
+ session.info[_METADATA_IDENTITY_KEY] = cls()
+ return cast(_MetadataCacheIdentity,
session.info[_METADATA_IDENTITY_KEY])
+
+ def capture(self, layer: SemanticLayer, session: Session) -> str:
+ """Web, task and MCP operations share a credential-independent
identity."""
+ if layer.uuid not in self.tokens:
+ namespace: str | Callable[[], str] = current_app.config.get(
+ "SEMANTIC_LAYER_CACHE_NAMESPACE", ""
+ )
+ if callable(namespace):
+ namespace = namespace()
+ if not isinstance(namespace, str):
+ raise TypeError(
+ "SEMANTIC_LAYER_CACHE_NAMESPACE must resolve to a string"
+ )
+ url: sa.engine.URL =
session.get_bind(mapper=SemanticLayer).engine.url
Review Comment:
✅ **Customized review instruction saved!**
**Instruction:**
> Do not flag `.engine` access on SQLAlchemy `Engine` or `Connection`
objects as an API mismatch; in SQLAlchemy 2.0, both expose an engine property.
**Applied to:**
- `superset/semantic_layers/**`
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