zentol commented on code in PR #24292:
URL: https://github.com/apache/flink/pull/24292#discussion_r1485904612
##########
flink-rpc/flink-rpc-core/src/main/java/org/apache/flink/runtime/rpc/RpcGateway.java:
##########
@@ -34,4 +34,16 @@ public interface RpcGateway {
* @return Fully qualified hostname under which the associated rpc
endpoint is reachable
*/
String getHostname();
+
+ /**
+ * Perform optional steps before handling any messages or performing
service actions (e.g.
+ * start/stop).
+ */
+ default void beforeInvocation() {}
Review Comment:
Not a fan of these because it means we couple components more. I'd rather
see us add some pre/post-runnable args to wherever the MDC is set up.
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