openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/device/BarrierTaskBuilder.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;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.util.concurrent.FutureCallback;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.JdkFutureAdapters;
  15 import com.google.common.util.concurrent.ListenableFuture;
  16 import io.netty.util.HashedWheelTimer;
  17 import io.netty.util.Timeout;
  18 import io.netty.util.TimerTask;
  19 import java.util.concurrent.Future;
  20 import java.util.concurrent.TimeUnit;
  21 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInput;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierInputBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.BarrierOutput;
  25 import org.opendaylight.yangtools.yang.common.RpcResult;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 /**
  30  * openflowplugin-impl
  31  * org.opendaylight.openflowplugin.impl.device
  32  *
  33  * Barrier message self restarting builder.
  34  *
  35  * @author <a href="mailto:vdemcak@cisco.com">Vaclav Demcak</a>
  36  *
  37  * Created: Apr 3, 2015
  38  */
  39 public class BarrierTaskBuilder {
  40
  41     private static final Logger LOG = LoggerFactory.getLogger(BarrierTaskBuilder.class);
  42
  43     private final HashedWheelTimer hashedWheelTimer;
  44     private final DeviceContext deviceCtx;
  45
  46     public BarrierTaskBuilder (final DeviceContext deviceCtx, final HashedWheelTimer hashedWheelTimer) {
  47         this.hashedWheelTimer = Preconditions.checkNotNull(hashedWheelTimer);
  48         this.deviceCtx = Preconditions.checkNotNull(deviceCtx);
  49     }
  50
  51     public void buildAndFireBarrierTask() {
  52         hashedWheelTimer.newTimeout(makeTimerTask(), 500, TimeUnit.MILLISECONDS);
  53     }
  54
  55     private TimerTask makeTimerTask() {
  56         return new TimerTask() {
  57             @Override
  58             public void run(final Timeout timeout) throws Exception {
  59                 final Future<RpcResult<BarrierOutput>> future = deviceCtx.getPrimaryConnectionContext()
  60                         .getConnectionAdapter().barrier(makeBarier());
  61                 final ListenableFuture<RpcResult<BarrierOutput>> lsFuture = JdkFutureAdapters.listenInPoolThread(future);
  62                 Futures.addCallback(lsFuture, makeCallBack());
  63             }
  64         };
  65     }
  66
  67     private FutureCallback<RpcResult<BarrierOutput>> makeCallBack() {
  68         return new FutureCallback<RpcResult<BarrierOutput>>() {
  69             @Override
  70             public void onSuccess(final RpcResult<BarrierOutput> result) {
  71                 BarrierProcessor.processOutstandingRequests(result.getResult().getXid(), deviceCtx);
  72                 buildAndFireBarrierTask();
  73             }
  74             @Override
  75             public void onFailure(final Throwable t) {
  76                 LOG.info("Barrier has failed {} ", t.getMessage());
  77                 LOG.trace("Barrier has failed", t);
  78             }
  79         };
  80     }
  81
  82     private BarrierInput makeBarier() {
  83         final BarrierInputBuilder biBuilder = new BarrierInputBuilder();
  84         biBuilder.setVersion(deviceCtx.getDeviceState().getVersion());
  85         biBuilder.setXid(deviceCtx.getNextXid().getValue());
  86         return biBuilder.build();
  87     }
  88 }