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
   9 package org.opendaylight.openflowplugin.impl.device.listener;
  10
  11 import com.google.common.base.Preconditions;
  12 import java.util.ArrayList;
  13 import java.util.List;
  14 import java.util.Objects;
  15 import javax.annotation.Nonnull;
  16 import javax.annotation.Nullable;
  17 import org.opendaylight.openflowplugin.api.openflow.device.RequestContext;
  18 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceReplyProcessor;
  19 import org.opendaylight.openflowplugin.api.openflow.device.handlers.MultiMsgCollector;
  20 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.EventIdentifier;
  21 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.EventsTimeCounter;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  23 import org.opendaylight.yangtools.yang.common.RpcResult;
  24 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28
  29 /**
  30  * <p>
  31  * Implementation for {@link MultiMsgCollector} interface
  32  *
  33  * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
  34  * @author <a href="mailto:tkubas@cisco.com">Timotej Kubas</a>
  35  *         </p>
  36  *         Created: Mar 23, 2015
  37  */
  38 public class MultiMsgCollectorImpl<T extends OfHeader> implements MultiMsgCollector<T> {
  39     private static final Logger LOG = LoggerFactory.getLogger(MultiMsgCollectorImpl.class);
  40     private final List<T> replyCollection = new ArrayList<>();
  41     private final RequestContext<List<T>> requestContext;
  42     private final DeviceReplyProcessor deviceReplyProcessor;
  43
  44     public MultiMsgCollectorImpl(final DeviceReplyProcessor deviceReplyProcessor, final RequestContext<List<T>> requestContext) {
  45         this.deviceReplyProcessor = Preconditions.checkNotNull(deviceReplyProcessor);
  46         this.requestContext = Preconditions.checkNotNull(requestContext);
  47     }
  48
  49     @Override
  50     public void addMultipartMsg(@Nonnull final T reply, final boolean reqMore, @Nullable final EventIdentifier eventIdentifier) {
  51         Preconditions.checkNotNull(reply);
  52         Preconditions.checkNotNull(requestContext.getXid());
  53         Preconditions.checkArgument(requestContext.getXid().getValue().equals(reply.getXid()));
  54         LOG.trace("Try to add Multipart reply msg with XID {}", reply.getXid());
  55         replyCollection.add(reply);
  56
  57         if (!reqMore) {
  58             endCollecting(eventIdentifier);
  59         }
  60     }
  61
  62     @Override
  63     public void endCollecting(@Nullable final EventIdentifier eventIdentifier) {
  64         final RpcResult<List<T>> rpcResult = RpcResultBuilder.success(replyCollection).build();
  65
  66         if (Objects.nonNull(eventIdentifier)) {
  67             EventsTimeCounter.markEnd(eventIdentifier);
  68         }
  69
  70         requestContext.setResult(rpcResult);
  71         requestContext.close();
  72         deviceReplyProcessor.processReply(requestContext.getXid(), replyCollection);
  73     }
  74 }