opendaylight/md-sal/cds-access-client/src/main/java/org/opendaylight/controller/cluster/access/client/ReconnectingClientConnection.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 static java.util.Objects.requireNonNull;
  11
  12 import org.opendaylight.controller.cluster.access.concepts.RequestException;
  13 import org.slf4j.Logger;
  14 import org.slf4j.LoggerFactory;
  15
  16 /**
  17  * An {@link AbstractClientConnection} which is being reconnected after having timed out.
  18  *
  19  * @author Robert Varga
  20  *
  21  * @param <T> {@link BackendInfo} type
  22  */
  23 public final class ReconnectingClientConnection<T extends BackendInfo> extends AbstractReceivingClientConnection<T> {
  24     private static final Logger LOG = LoggerFactory.getLogger(ReconnectingClientConnection.class);
  25
  26     private RequestException cause;
  27
  28     ReconnectingClientConnection(final ConnectedClientConnection<T> oldConnection, final RequestException cause) {
  29         super(oldConnection);
  30         this.cause = requireNonNull(cause);
  31     }
  32
  33     @Override
  34     long backendSilentTicks(final long now) {
  35         // We do not want to reconnect this connection, as we need the timer to to keep running
  36         return 0;
  37     }
  38
  39     @Override
  40     @SuppressWarnings("checkstyle:hiddenField")
  41     ClientActorBehavior<T> lockedReconnect(final ClientActorBehavior<T> current, final RequestException cause) {
  42         this.cause = requireNonNull(cause);
  43         LOG.warn("Skipping reconnect of already-reconnecting connection {}", this);
  44         return current;
  45     }
  46
  47     @Override
  48     RequestException enrichPoison(final RequestException ex) {
  49         if (ex.getCause() != null) {
  50             ex.addSuppressed(cause);
  51         } else {
  52             ex.initCause(cause);
  53         }
  54
  55         return ex;
  56     }
  57
  58 }