Restore logging current_context (not sure why removed

synapse/logging/context.py

@@ -327,6 +327,22 @@ class LoggingContext:
     def __str__(self) -> str:
         return self.name
 
+    @classmethod
+    def current_context(cls) -> LoggingContextOrSentinel:
+        """Get the current logging context from thread local storage
+        This exists for backwards compatibility. ``current_context()`` should be
+        called directly.
+        Returns:
+            LoggingContext: the current logging context
+        """
+        warnings.warn(
+            "synapse.logging.context.LoggingContext.current_context() is deprecated "
+            "in favor of synapse.logging.context.current_context().",
+            DeprecationWarning,
+            stacklevel=2,
+        )
+        return current_context()
+
     @classmethod
     def set_current_context(
         cls, context: LoggingContextOrSentinel