chetanmeh 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_r324789458
##########
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:
Would this change cause some compatibility issue when there would be a
gradual roll out of new invokers in an existing cluster.
So for we do not have any comparability contract for messages exchange via
Kafka
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