[ 
https://issues.apache.org/jira/browse/ARTEMIS-3243?focusedWorklogId=620251&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-620251
 ]

ASF GitHub Bot logged work on ARTEMIS-3243:
-------------------------------------------

                Author: ASF GitHub Bot
            Created on: 07/Jul/21 22:19
            Start Date: 07/Jul/21 22:19
    Worklog Time Spent: 10m 
      Work Description: clebertsuconic commented on a change in pull request 
#3633:
URL: https://github.com/apache/activemq-artemis/pull/3633#discussion_r665741846



##########
File path: 
artemis-protocols/artemis-amqp-protocol/src/main/java/org/apache/activemq/artemis/protocol/amqp/connect/mirror/AMQPMirrorControllerTarget.java
##########
@@ -38,51 +35,146 @@
 import org.apache.activemq.artemis.core.server.impl.RoutingContextImpl;
 import org.apache.activemq.artemis.core.server.mirror.MirrorController;
 import org.apache.activemq.artemis.core.transaction.Transaction;
+import 
org.apache.activemq.artemis.core.transaction.TransactionOperationAbstract;
+import org.apache.activemq.artemis.core.transaction.impl.TransactionImpl;
 import org.apache.activemq.artemis.protocol.amqp.broker.AMQPMessage;
 import 
org.apache.activemq.artemis.protocol.amqp.broker.AMQPMessageBrokerAccessor;
 import org.apache.activemq.artemis.protocol.amqp.broker.AMQPSessionCallback;
+import org.apache.activemq.artemis.protocol.amqp.broker.ProtonProtocolManager;
 import org.apache.activemq.artemis.protocol.amqp.proton.AMQPConnectionContext;
 import org.apache.activemq.artemis.protocol.amqp.proton.AMQPSessionContext;
 import org.apache.activemq.artemis.protocol.amqp.proton.ProtonAbstractReceiver;
+import org.apache.activemq.artemis.utils.ByteUtil;
+import org.apache.activemq.artemis.utils.collections.NodeStore;
+import org.apache.activemq.artemis.utils.pools.MpscPool;
 import org.apache.qpid.proton.amqp.messaging.Accepted;
 import org.apache.qpid.proton.amqp.messaging.AmqpValue;
 import org.apache.qpid.proton.amqp.transport.ReceiverSettleMode;
 import org.apache.qpid.proton.engine.Delivery;
 import org.apache.qpid.proton.engine.Receiver;
 import org.jboss.logging.Logger;
 
-import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.EVENT_TYPE;
 import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.ADDRESS;
-import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.INTERNAL_DESTINATION;
-import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.POST_ACK;
-import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.QUEUE;
 import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.ADD_ADDRESS;
-import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.DELETE_ADDRESS;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.BROKER_ID;
 import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.CREATE_QUEUE;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.DELETE_ADDRESS;
 import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.DELETE_QUEUE;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.EVENT_TYPE;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.INTERNAL_BROKER_ID_EXTRA_PROPERTY;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.INTERNAL_DESTINATION;
 import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.INTERNAL_ID;
-import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.ADDRESS_SCAN_START;
-import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.ADDRESS_SCAN_END;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.POST_ACK;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.QUEUE;
+import static 
org.apache.activemq.artemis.protocol.amqp.connect.mirror.AMQPMirrorControllerSource.INTERNAL_ID_EXTRA_PROPERTY;
 
 public class AMQPMirrorControllerTarget extends ProtonAbstractReceiver 
implements MirrorController {
 
-   public static final SimpleString INTERNAL_ID_EXTRA_PROPERTY = 
SimpleString.toSimpleString(INTERNAL_ID.toString());
-
    private static final Logger logger = 
Logger.getLogger(AMQPMirrorControllerTarget.class);
 
-   final ActiveMQServer server;
+   private static ThreadLocal<MirrorController> controllerThreadLocal = new 
ThreadLocal<>();
+
+   public static void setControllerTarget(MirrorController controller) {
+      controllerThreadLocal.set(controller);
+   }
+
+   public static MirrorController getControllerTarget() {
+      return controllerThreadLocal.get();
+   }
+
+   /** Objects of this class can be used by either transaction or by 
OperationContext.
+    *  It is important that when you're using the transactions you clear any 
references to
+    *  the operation context. Don't use transaction and OperationContext at 
the same time
+    *  as that would generate duplicates on the objects cache.
+    */
+   class ACKMessageOperation implements IOCallback, Runnable {
+
+      Delivery delivery;
+
+      /** notice that when you use the Transaction, you need to make sure you 
don't use the IO*/
+      public TransactionOperationAbstract tx = new 
TransactionOperationAbstract() {
+         @Override
+         public void afterCommit(Transaction tx) {
+            completeOperation();
+         }
+      };
+
+      void reset() {
+         this.delivery = null;
+      }
+
+      ACKMessageOperation setDelivery(Delivery delivery) {
+         this.delivery = delivery;
+         return this;
+      }
+
+      @Override
+      public void run() {
+         if (logger.isTraceEnabled()) {
+            logger.trace("Delivery settling for " + delivery + ", context=" + 
delivery.getContext());
+         }
+         delivery.disposition(Accepted.getInstance());
+         settle(delivery);
+         connection.flush();
+         
AMQPMirrorControllerTarget.this.ackMessageMpscPool.release(ACKMessageOperation.this);
+      }
+
+      @Override
+      public void done() {
+         completeOperation();
+      }
+
+      private void completeOperation() {
+         connection.runNow(ACKMessageOperation.this);
+      }
+
+      @Override
+      public void onError(int errorCode, String errorMessage) {
+         logger.warn(errorMessage + "-"  + errorMessage);
+      }
+   }
+
+   // in a regular case we should not have more than amqpCredits on the pool, 
that's the max we would need
+   private final MpscPool<ACKMessageOperation> ackMessageMpscPool = new 
MpscPool<>(amqpCredits, ACKMessageOperation::reset, () -> new 
ACKMessageOperation());
 
    final RoutingContextImpl routingContext = new RoutingContextImpl(null);
 
-   Map<SimpleString, Map<SimpleString, QueueConfiguration>> scanAddresses;
+   final BasicMirrorController<Receiver> basicController;
+
+   final DuplicateIDGenerator duplicateIDGenerator = new 
DuplicateIDGenerator();
+
+   final ActiveMQServer server;
+
+   final DuplicateIDCache duplicateIDCache;
+
+   private final NodeStore<MessageReference> referenceNodeStore;
 
    public AMQPMirrorControllerTarget(AMQPSessionCallback sessionSPI,
                                      AMQPConnectionContext connection,
                                      AMQPSessionContext protonSession,
                                      Receiver receiver,
                                      ActiveMQServer server) {
       super(sessionSPI, connection, protonSession, receiver);
+      this.basicController = new BasicMirrorController(server);
+      this.basicController.setLink(receiver);
       this.server = server;
+      this.referenceNodeStore = 
sessionSPI.getProtocolManager().getReferenceIDSupplier();
+
+      // we use the number of credits for the duplicate detection, as that 
means the maximum number of elements you can have pending
+      if (logger.isTraceEnabled()) {
+         logger.trace("Setting up duplicate detection cache on " + 
ProtonProtocolManager.MIRROR_ADDRESS + " wth " + connection.getAmqpCredits() + 
" elements, being the number of credits");
+      }
+      duplicateIDCache = 
server.getPostOffice().getDuplicateIDCache(SimpleString.toSimpleString(ProtonProtocolManager.MIRROR_ADDRESS),
 connection.getAmqpCredits());

Review comment:
       I will mark this as resolved...  if you don't agree with this, please 
"unresolve" the conversation. (Let me know if you don't have access to 
unresolved the conversation).




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 620251)
    Time Spent: 19h 40m  (was: 19.5h)

> Enhance AMQP Mirror support with dual mirror
> --------------------------------------------
>
>                 Key: ARTEMIS-3243
>                 URL: https://issues.apache.org/jira/browse/ARTEMIS-3243
>             Project: ActiveMQ Artemis
>          Issue Type: Bug
>    Affects Versions: 2.17.0
>            Reporter: Clebert Suconic
>            Assignee: Clebert Suconic
>            Priority: Major
>             Fix For: 2.18.0
>
>          Time Spent: 19h 40m
>  Remaining Estimate: 0h
>
> at the current Mirror version, we can only mirror into a single direction.
> With this enhancement the two (or more brokers) would be connected to each 
> other, each one having its own ID, and each one would send updates to the 
> other broker.
> The outcome is that if you just transferred producers and consumers from one 
> broker into the other, the fallback would be automatic and simple. No need to 
> disable and enable mirror options.



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