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  * Implementation for {@link MultiMsgCollector} interface.
  31  *
  32  * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
  33  * @author <a href="mailto:tkubas@cisco.com">Timotej Kubas</a>
  34  */
  35 public class MultiMsgCollectorImpl<T extends OfHeader> implements MultiMsgCollector<T> {
  36     private static final Logger LOG = LoggerFactory.getLogger(MultiMsgCollectorImpl.class);
  37     private final List<T> replyCollection = new ArrayList<>();
  38     private final RequestContext<List<T>> requestContext;
  39     private final DeviceReplyProcessor deviceReplyProcessor;
  40
  41     public MultiMsgCollectorImpl(final DeviceReplyProcessor deviceReplyProcessor,
  42                                  final RequestContext<List<T>> requestContext) {
  43         this.deviceReplyProcessor = Preconditions.checkNotNull(deviceReplyProcessor);
  44         this.requestContext = Preconditions.checkNotNull(requestContext);
  45     }
  46
  47     @Override
  48     public void addMultipartMsg(@Nonnull final T reply, final boolean reqMore,
  49                                 @Nullable final EventIdentifier eventIdentifier) {
  50         Preconditions.checkNotNull(reply);
  51         Preconditions.checkNotNull(requestContext.getXid());
  52         Preconditions.checkArgument(requestContext.getXid().getValue().equals(reply.getXid()));
  53         LOG.trace("Try to add Multipart reply msg with XID {}", reply.getXid());
  54         replyCollection.add(reply);
  55
  56         if (!reqMore) {
  57             endCollecting(eventIdentifier);
  58         }
  59     }
  60
  61     @Override
  62     public void endCollecting(@Nullable final EventIdentifier eventIdentifier) {
  63         final RpcResult<List<T>> rpcResult = RpcResultBuilder.success(replyCollection).build();
  64
  65         if (Objects.nonNull(eventIdentifier)) {
  66             EventsTimeCounter.markEnd(eventIdentifier);
  67         }
  68
  69         requestContext.setResult(rpcResult);
  70         requestContext.close();
  71         deviceReplyProcessor.processReply(requestContext.getXid(), replyCollection);
  72     }
  73 }