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