opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/ReconnectForwarder.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.controller.cluster.access.client;
   9
  10 import com.google.common.base.Preconditions;
  11 import org.slf4j.Logger;
  12 import org.slf4j.LoggerFactory;
  13
  14 /**
  15  * Forwarder class responsible for routing requests from the previous connection incarnation back to the originator,
  16  * which can then convert them as appropriate.
  17  *
  18  * @author Robert Varga
  19  */
  20 public abstract class ReconnectForwarder {
  21     static final Logger LOG = LoggerFactory.getLogger(ReconnectForwarder.class);
  22     // Visible for subclass method handle
  23     private final AbstractReceivingClientConnection<?> successor;
  24
  25     protected ReconnectForwarder(final AbstractReceivingClientConnection<?> successor) {
  26         this.successor = Preconditions.checkNotNull(successor);
  27     }
  28
  29     protected final void sendToSuccessor(final ConnectionEntry entry) {
  30         successor.sendRequest(entry.getRequest(), entry.getCallback());
  31     }
  32
  33     protected final void replayToSuccessor(final ConnectionEntry entry) {
  34         successor.enqueueRequest(entry.getRequest(), entry.getCallback(), entry.getEnqueuedTicks());
  35     }
  36
  37     protected abstract void forwardEntry(ConnectionEntry entry, long now);
  38
  39     protected abstract void replayEntry(ConnectionEntry entry, long now);
  40
  41     final AbstractReceivingClientConnection<?> successor() {
  42         return successor;
  43     }
  44 }