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 java.util.function.Consumer;
  12 import org.opendaylight.controller.cluster.access.concepts.Request;
  13 import org.opendaylight.controller.cluster.access.concepts.Response;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 /**
  18  * Forwarder class responsible for routing requests from the previous connection incarnation back to the originator,
  19  * which can then convert them as appropriate.
  20  *
  21  * @author Robert Varga
  22  */
  23 public abstract class ReconnectForwarder {
  24     static final Logger LOG = LoggerFactory.getLogger(ReconnectForwarder.class);
  25     // Visible for subclass method handle
  26     private final AbstractReceivingClientConnection<?> successor;
  27
  28     protected ReconnectForwarder(final AbstractReceivingClientConnection<?> successor) {
  29         this.successor = Preconditions.checkNotNull(successor);
  30     }
  31
  32     protected final void sendToSuccessor(final Request<?, ?> request, final Consumer<Response<?, ?>> callback) {
  33         successor.sendRequest(request, callback);
  34     }
  35
  36     protected abstract void forwardEntry(ConnectionEntry entry, long now);
  37
  38     final AbstractReceivingClientConnection<?> successor() {
  39         return successor;
  40     }
  41 }