openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/device/listener/MultiMsgCollectorImpl.java

   1 /*
   2  * Copyright (c) 2015 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.openflowplugin.impl.device.listener;
   9
  10 import com.google.common.base.Preconditions;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import org.eclipse.jdt.annotation.NonNull;
  14 import org.eclipse.jdt.annotation.Nullable;
  15 import org.opendaylight.openflowplugin.api.openflow.device.RequestContext;
  16 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceReplyProcessor;
  17 import org.opendaylight.openflowplugin.api.openflow.device.handlers.MultiMsgCollector;
  18 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.EventIdentifier;
  19 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.EventsTimeCounter;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  21 import org.opendaylight.yangtools.yang.common.RpcResult;
  22 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25
  26 /**
  27  * Implementation for {@link MultiMsgCollector} interface.
  28  *
  29  * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
  30  * @author <a href="mailto:tkubas@cisco.com">Timotej Kubas</a>
  31  */
  32 public class MultiMsgCollectorImpl<T extends OfHeader> implements MultiMsgCollector<T> {
  33     private static final Logger LOG = LoggerFactory.getLogger(MultiMsgCollectorImpl.class);
  34     private final List<T> replyCollection = new ArrayList<>();
  35     private final RequestContext<List<T>> requestContext;
  36     private final DeviceReplyProcessor deviceReplyProcessor;
  37
  38     public MultiMsgCollectorImpl(final DeviceReplyProcessor deviceReplyProcessor,
  39                                  final RequestContext<List<T>> requestContext) {
  40         this.deviceReplyProcessor = Preconditions.checkNotNull(deviceReplyProcessor);
  41         this.requestContext = Preconditions.checkNotNull(requestContext);
  42     }
  43
  44     @Override
  45     public void addMultipartMsg(@NonNull final T reply, final boolean reqMore,
  46                                 @Nullable final EventIdentifier eventIdentifier) {
  47         Preconditions.checkNotNull(reply);
  48         Preconditions.checkNotNull(requestContext.getXid());
  49         Preconditions.checkArgument(requestContext.getXid().getValue().equals(reply.getXid()));
  50         LOG.trace("Try to add Multipart reply msg with XID {}", reply.getXid());
  51         replyCollection.add(reply);
  52
  53         if (!reqMore) {
  54             endCollecting(eventIdentifier);
  55         }
  56     }
  57
  58     @Override
  59     public void endCollecting(@Nullable final EventIdentifier eventIdentifier) {
  60         final RpcResult<List<T>> rpcResult = RpcResultBuilder.success(replyCollection).build();
  61
  62         if (eventIdentifier != null) {
  63             EventsTimeCounter.markEnd(eventIdentifier);
  64         }
  65
  66         requestContext.setResult(rpcResult);
  67         requestContext.close();
  68         deviceReplyProcessor.processReply(requestContext.getXid(), replyCollection);
  69     }
  70 }