openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/services/MultipartRequestOnTheFlyCallback.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.services;
   9
  10 import com.google.common.base.Function;
  11 import com.google.common.util.concurrent.Futures;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.util.Collections;
  14 import java.util.List;
  15 import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
  16 import org.opendaylight.openflowplugin.api.openflow.device.RequestContext;
  17 import org.opendaylight.openflowplugin.api.openflow.device.TxFacade;
  18 import org.opendaylight.openflowplugin.api.openflow.registry.flow.DeviceFlowRegistry;
  19 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.EventIdentifier;
  20 import org.opendaylight.openflowplugin.api.openflow.statistics.ofpspecific.MessageSpy;
  21 import org.opendaylight.openflowplugin.impl.statistics.SinglePurposeMultipartReplyTranslator;
  22 import org.opendaylight.openflowplugin.impl.statistics.StatisticsGatheringUtils;
  23 import org.opendaylight.openflowplugin.impl.statistics.ofpspecific.EventsTimeCounter;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.flow.statistics.rev130819.FlowsStatisticsUpdate;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.MultipartType;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.MultipartReply;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader;
  28 import org.opendaylight.yangtools.yang.binding.DataObject;
  29 import org.opendaylight.yangtools.yang.common.RpcError;
  30 import org.opendaylight.yangtools.yang.common.RpcResult;
  31 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 final class MultipartRequestOnTheFlyCallback extends AbstractRequestCallback<List<MultipartReply>> {
  36     private static final Logger LOG = LoggerFactory.getLogger(MultipartRequestOnTheFlyCallback.class);
  37     private static final SinglePurposeMultipartReplyTranslator MULTIPART_REPLY_TRANSLATOR = new SinglePurposeMultipartReplyTranslator();
  38     private final DeviceInfo deviceInfo;
  39     private final DeviceFlowRegistry registry;
  40     private boolean virgin = true;
  41     private boolean finished = false;
  42     private final EventIdentifier doneEventIdentifier;
  43     private final TxFacade txFacade;
  44
  45
  46     public MultipartRequestOnTheFlyCallback(final RequestContext<List<MultipartReply>> context,
  47                                             final Class<?> requestType,
  48                                             final MessageSpy messageSpy,
  49                                             final EventIdentifier eventIdentifier,
  50                                             final DeviceInfo deviceInfo,
  51                                             final DeviceFlowRegistry registry,
  52                                             final TxFacade txFacade) {
  53         super(context, requestType, messageSpy, eventIdentifier);
  54
  55         this.deviceInfo = deviceInfo;
  56         this.registry = registry;
  57         this.txFacade = txFacade;
  58
  59         //TODO: this is focused on flow stats only - need more general approach if used for more than flow stats
  60         doneEventIdentifier = new EventIdentifier(MultipartType.OFPMPFLOW.name(), deviceInfo.getNodeId().toString());
  61     }
  62
  63     public EventIdentifier getDoneEventIdentifier() {
  64         return doneEventIdentifier;
  65     }
  66
  67     @Override
  68     public void onSuccess(final OfHeader result) {
  69         if (result == null) {
  70             LOG.info("Ofheader was null.");
  71             if (!finished) {
  72                 endCollecting();
  73                 return;
  74             }
  75         } else if (finished) {
  76             LOG.debug("Unexpected multipart response received: xid={}, {}", result.getXid(), result.getImplementedInterface());
  77             return;
  78         }
  79
  80         if (!(result instanceof MultipartReply)) {
  81             LOG.info("Unexpected response type received {}.", result.getClass());
  82             final RpcResultBuilder<List<MultipartReply>> rpcResultBuilder =
  83                     RpcResultBuilder.<List<MultipartReply>>failed().withError(RpcError.ErrorType.APPLICATION,
  84                             String.format("Unexpected response type received %s.", result.getClass()));
  85             setResult(rpcResultBuilder.build());
  86             endCollecting();
  87         } else {
  88             final MultipartReply multipartReply = (MultipartReply) result;
  89
  90             final MultipartReply singleReply = multipartReply;
  91             final List<? extends DataObject> multipartDataList = MULTIPART_REPLY_TRANSLATOR.translate(
  92                     deviceInfo.getDatapathId(), deviceInfo.getVersion(), singleReply);
  93             final Iterable<? extends DataObject> allMultipartData = multipartDataList;
  94
  95             //TODO: following part is focused on flow stats only - need more general approach if used for more than flow stats
  96             ListenableFuture<Void> future;
  97             if (virgin) {
  98                 future = StatisticsGatheringUtils.deleteAllKnownFlows(deviceInfo, registry, txFacade);
  99                 virgin = false;
 100             } else {
 101                 future = Futures.immediateFuture(null);
 102             }
 103
 104             Futures.transform(future, new Function<Void, Void>() {
 105
 106                 @Override
 107                 public Void apply(final Void input) {
 108                     StatisticsGatheringUtils.writeFlowStatistics((Iterable<FlowsStatisticsUpdate>) allMultipartData,
 109                             deviceInfo, registry, txFacade);
 110
 111                     if (!multipartReply.getFlags().isOFPMPFREQMORE()) {
 112                         endCollecting();
 113                     }
 114                     return input;
 115                 }
 116             });
 117         }
 118     }
 119
 120     private void endCollecting() {
 121         EventsTimeCounter.markEnd(getDoneEventIdentifier());
 122         EventsTimeCounter.markEnd(getEventIdentifier());
 123         final RpcResult<List<MultipartReply>> rpcResult = RpcResultBuilder.success(Collections.<MultipartReply>emptyList()).build();
 124         spyMessage(MessageSpy.STATISTIC_GROUP.FROM_SWITCH_TRANSLATE_OUT_SUCCESS);
 125         txFacade.submitTransaction();
 126         setResult(rpcResult);
 127         finished = true;
 128     }
 129 }