[GitHub] [openwhisk] sven-lange-last commented on a change in pull request #4624: Combines active ack and slot release when both are available.

[GitBox <gi...@apache.org>]

sven-lange-last commented on a change in pull request #4624: Combines active ack and slot release when both are available.
URL: https://github.com/apache/openwhisk/pull/4624#discussion_r325189762
 
 

 ##########
 File path: common/scala/src/main/scala/org/apache/openwhisk/core/connector/Message.scala
 ##########
 @@ -64,43 +64,34 @@ case class ActivationMessage(override val transid: TransactionId,
   def causedBySequence: Boolean = cause.isDefined
 }
 
-object ActivationMessage extends DefaultJsonProtocol {
-
-  def parse(msg: String) = Try(serdes.read(msg.parseJson))
-
-  private implicit val fqnSerdes = FullyQualifiedEntityName.serdes
-  implicit val serdes = jsonFormat11(ActivationMessage.apply)
-}
-
 /**
  * Message that is sent from the invoker to the controller after action is completed or after slot is free again for
  * new actions.
  */
 abstract class AcknowledegmentMessage(private val tid: TransactionId) extends Message {
   override val transid: TransactionId = tid
-  override def serialize: String = {
-    AcknowledegmentMessage.serdes.write(this).compactPrint
-  }
+  override def serialize: String = AcknowledegmentMessage.serdes.write(this).compactPrint
+  def toJson: JsValue
 }
 
 /**
- * This message is sent from the invoker to the controller, after the slot of an invoker that has been used by the
- * current action, is free again (after log collection)
+ * This message is sent from an invoker to the controller, after the resource slot in the invoke, used by the
+ * corresponding activation, is free again (i.e., after log collection). In some cases, the activation result is
+ * ready and the slot is freed at the same time. In such cases, the completion message carries the result as well.
+ * This is reflected by the of a Right() `response` and the param `result` is set to true.
+ * In some cases the `result` is true but the response is Left() if the message was too large for the message bus.
  */
 case class CompletionMessage(override val transid: TransactionId,
-                             activationId: ActivationId,
-                             isSystemError: Boolean,
+                             response: Either[ActivationId, WhiskActivation],
+                             result: Boolean, // true iff the message is a combined active ack and slot released
 
 Review comment:
   @rabbah I do not have the requirement to support rolling updates at the moment. From my side, we can introduce incompatible Kafka message changes requiring that all controllers and invokers need to be updated in parallel.

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services