openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/statistics/StatisticsManagerImpl.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.statistics;
  10
  11 import com.google.common.annotations.VisibleForTesting;
  12 import com.google.common.base.Optional;
  13 import com.google.common.util.concurrent.FutureCallback;
  14 import com.google.common.util.concurrent.Futures;
  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.Map;
  20 import java.util.concurrent.ConcurrentHashMap;
  21 import java.util.concurrent.Future;
  22 import java.util.concurrent.Semaphore;
  23 import java.util.concurrent.TimeUnit;
  24 import org.opendaylight.controller.sal.binding.api.BindingAwareBroker;
  25 import org.opendaylight.controller.sal.binding.api.RpcProviderRegistry;
  26 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
  27 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  28 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceInitializationPhaseHandler;
  29 import org.opendaylight.openflowplugin.api.openflow.rpc.ItemLifeCycleSource;
  30 import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsContext;
  31 import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsManager;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.sm.control.rev150812.ChangeStatisticsWorkModeInput;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.sm.control.rev150812.GetStatisticsWorkModeOutput;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.sm.control.rev150812.GetStatisticsWorkModeOutputBuilder;
  35 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.sm.control.rev150812.StatisticsManagerControlService;
  36 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.sm.control.rev150812.StatisticsWorkMode;
  37 import org.opendaylight.yangtools.yang.common.RpcError;
  38 import org.opendaylight.yangtools.yang.common.RpcResult;
  39 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  40 import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.OfpRole;
  41 import org.slf4j.Logger;
  42 import org.slf4j.LoggerFactory;
  43
  44 /**
  45  * Created by Martin Bobak &lt;mbobak@cisco.com&gt; on 1.4.2015.
  46  */
  47 public class StatisticsManagerImpl implements StatisticsManager, StatisticsManagerControlService {
  48
  49     private static final Logger LOG = LoggerFactory.getLogger(StatisticsManagerImpl.class);
  50     private final RpcProviderRegistry rpcProviderRegistry;
  51
  52     private DeviceInitializationPhaseHandler deviceInitPhaseHandler;
  53
  54     private HashedWheelTimer hashedWheelTimer;
  55
  56     private final ConcurrentHashMap<DeviceContext, StatisticsContext> contexts = new ConcurrentHashMap<>();
  57
  58     private static final long basicTimerDelay = 3000;
  59     private static long currentTimerDelay = basicTimerDelay;
  60     private static long maximumTimerDelay = 900000; //wait max 15 minutes for next statistics
  61
  62     private StatisticsWorkMode workMode = StatisticsWorkMode.COLLECTALL;
  63     private Semaphore workModeGuard = new Semaphore(1, true);
  64     private boolean shuttingDownStatisticsPolling;
  65     private BindingAwareBroker.RpcRegistration<StatisticsManagerControlService> controlServiceRegistration;
  66
  67     @Override
  68     public void setDeviceInitializationPhaseHandler(final DeviceInitializationPhaseHandler handler) {
  69         deviceInitPhaseHandler = handler;
  70     }
  71
  72     public StatisticsManagerImpl(RpcProviderRegistry rpcProviderRegistry) {
  73         this.rpcProviderRegistry = rpcProviderRegistry;
  74         controlServiceRegistration = rpcProviderRegistry.addRpcImplementation(StatisticsManagerControlService.class, this);
  75     }
  76
  77     public StatisticsManagerImpl(RpcProviderRegistry rpcProviderRegistry, final boolean shuttingDownStatisticsPolling) {
  78         this(rpcProviderRegistry);
  79         this.shuttingDownStatisticsPolling = shuttingDownStatisticsPolling;
  80     }
  81
  82     @Override
  83     public void onDeviceContextLevelUp(final DeviceContext deviceContext) {
  84         LOG.debug("Node:{}, deviceContext.getDeviceState().getRole():{}", deviceContext.getDeviceState().getNodeId(),
  85                 deviceContext.getDeviceState().getRole());
  86         if (deviceContext.getDeviceState().getRole() == OfpRole.BECOMESLAVE) {
  87             // if slave, we dont poll for statistics and jump to rpc initialization
  88             LOG.info("Skipping Statistics for slave role for node:{}", deviceContext.getDeviceState().getNodeId());
  89             deviceInitPhaseHandler.onDeviceContextLevelUp(deviceContext);
  90             return;
  91         }
  92
  93         if (null == hashedWheelTimer) {
  94             LOG.trace("This is first device that delivered timer. Starting statistics polling immediately.");
  95             hashedWheelTimer = deviceContext.getTimer();
  96         }
  97
  98         LOG.info("Starting Statistics for master role for node:{}", deviceContext.getDeviceState().getNodeId());
  99
 100         final StatisticsContext statisticsContext = new StatisticsContextImpl(deviceContext);
 101         deviceContext.addDeviceContextClosedHandler(this);
 102         final ListenableFuture<Boolean> weHaveDynamicData = statisticsContext.gatherDynamicData();
 103         Futures.addCallback(weHaveDynamicData, new FutureCallback<Boolean>() {
 104             @Override
 105             public void onSuccess(final Boolean statisticsGathered) {
 106                 if (statisticsGathered) {
 107                     //there are some statistics on device worth gathering
 108                     contexts.put(deviceContext, statisticsContext);
 109                     final TimeCounter timeCounter = new TimeCounter();
 110                     scheduleNextPolling(deviceContext, statisticsContext, timeCounter);
 111                     LOG.trace("Device dynamic info collecting done. Going to announce raise to next level.");
 112                     deviceInitPhaseHandler.onDeviceContextLevelUp(deviceContext);
 113                     deviceContext.getDeviceState().setDeviceSynchronized(true);
 114                 } else {
 115                     final String deviceAdress = deviceContext.getPrimaryConnectionContext().getConnectionAdapter().getRemoteAddress().toString();
 116                     try {
 117                         deviceContext.close();
 118                     } catch (Exception e) {
 119                         LOG.info("Statistics for device {} could not be gathered. Closing its device context.", deviceAdress);
 120                     }
 121                 }
 122             }
 123
 124             @Override
 125             public void onFailure(final Throwable throwable) {
 126                 LOG.warn("Statistics manager was not able to collect dynamic info for device.", deviceContext.getDeviceState().getNodeId(), throwable);
 127                 try {
 128                     deviceContext.close();
 129                 } catch (Exception e) {
 130                     LOG.warn("Error closing device context.", e);
 131                 }
 132             }
 133         });
 134     }
 135
 136     private void pollStatistics(final DeviceContext deviceContext,
 137                                 final StatisticsContext statisticsContext,
 138                                 final TimeCounter timeCounter) {
 139         timeCounter.markStart();
 140         ListenableFuture<Boolean> deviceStatisticsCollectionFuture = statisticsContext.gatherDynamicData();
 141         Futures.addCallback(deviceStatisticsCollectionFuture, new FutureCallback<Boolean>() {
 142             @Override
 143             public void onSuccess(final Boolean o) {
 144                 timeCounter.addTimeMark();
 145                 calculateTimerDelay(timeCounter);
 146                 scheduleNextPolling(deviceContext, statisticsContext, timeCounter);
 147             }
 148
 149             @Override
 150             public void onFailure(final Throwable throwable) {
 151                 timeCounter.addTimeMark();
 152                 LOG.info("Statistics gathering for single node was not successful: {}", throwable.getMessage());
 153                 LOG.debug("Statistics gathering for single node was not successful.. ", throwable);
 154                 calculateTimerDelay(timeCounter);
 155                 scheduleNextPolling(deviceContext, statisticsContext, timeCounter);
 156             }
 157         });
 158     }
 159
 160     private void scheduleNextPolling(final DeviceContext deviceContext,
 161                                      final StatisticsContext statisticsContext,
 162                                      final TimeCounter timeCounter) {
 163         if (null != hashedWheelTimer) {
 164             if (!shuttingDownStatisticsPolling) {
 165                 Timeout pollTimeout = hashedWheelTimer.newTimeout(new TimerTask() {
 166                     @Override
 167                     public void run(final Timeout timeout) throws Exception {
 168                         pollStatistics(deviceContext, statisticsContext, timeCounter);
 169                     }
 170                 }, currentTimerDelay, TimeUnit.MILLISECONDS);
 171                 statisticsContext.setPollTimeout(pollTimeout);
 172             }
 173         }
 174     }
 175
 176     @VisibleForTesting
 177     protected void calculateTimerDelay(final TimeCounter timeCounter) {
 178         long averageStatisticsGatheringTime = timeCounter.getAverageTimeBetweenMarks();
 179         if (averageStatisticsGatheringTime > currentTimerDelay) {
 180             currentTimerDelay *= 2;
 181             if (currentTimerDelay > maximumTimerDelay) {
 182                 currentTimerDelay = maximumTimerDelay;
 183             }
 184         } else {
 185             if (currentTimerDelay > basicTimerDelay) {
 186                 currentTimerDelay /= 2;
 187             } else {
 188                 currentTimerDelay = basicTimerDelay;
 189             }
 190         }
 191     }
 192
 193     @VisibleForTesting
 194     protected static long getCurrentTimerDelay() {
 195         return currentTimerDelay;
 196     }
 197
 198     @Override
 199     public void onDeviceContextClosed(final DeviceContext deviceContext) {
 200         StatisticsContext statisticsContext = contexts.remove(deviceContext);
 201         if (null != statisticsContext) {
 202             LOG.trace("Removing device context from stack. No more statistics gathering for node {}", deviceContext.getDeviceState().getNodeId());
 203             try {
 204                 statisticsContext.close();
 205             } catch (Exception e) {
 206                 LOG.debug("Error closing statistic context for node {}.", deviceContext.getDeviceState().getNodeId());
 207             }
 208         }
 209     }
 210
 211     @Override
 212     public Future<RpcResult<GetStatisticsWorkModeOutput>> getStatisticsWorkMode() {
 213         GetStatisticsWorkModeOutputBuilder smModeOutputBld = new GetStatisticsWorkModeOutputBuilder();
 214         smModeOutputBld.setMode(workMode);
 215         return RpcResultBuilder.success(smModeOutputBld.build()).buildFuture();
 216     }
 217
 218     @Override
 219     public Future<RpcResult<Void>> changeStatisticsWorkMode(ChangeStatisticsWorkModeInput input) {
 220         final Future<RpcResult<Void>> result;
 221         // acquire exclusive access
 222         if (workModeGuard.tryAcquire()) {
 223             final StatisticsWorkMode targetWorkMode = input.getMode();
 224             if (!workMode.equals(targetWorkMode)) {
 225                 shuttingDownStatisticsPolling = StatisticsWorkMode.FULLYDISABLED.equals(targetWorkMode);
 226                 // iterate through stats-ctx: propagate mode
 227                 for (Map.Entry<DeviceContext, StatisticsContext> contextEntry : contexts.entrySet()) {
 228                     final DeviceContext deviceContext = contextEntry.getKey();
 229                     final StatisticsContext statisticsContext = contextEntry.getValue();
 230                     switch (targetWorkMode) {
 231                         case COLLECTALL:
 232                             scheduleNextPolling(deviceContext, statisticsContext, new TimeCounter());
 233                             for (ItemLifeCycleSource lifeCycleSource : deviceContext.getItemLifeCycleSourceRegistry().getLifeCycleSources()) {
 234                                 lifeCycleSource.setItemLifecycleListener(null);
 235                             }
 236                             break;
 237                         case FULLYDISABLED:
 238                             final Optional<Timeout> pollTimeout = statisticsContext.getPollTimeout();
 239                             if (pollTimeout.isPresent()) {
 240                                 pollTimeout.get().cancel();
 241                             }
 242                             for (ItemLifeCycleSource lifeCycleSource : deviceContext.getItemLifeCycleSourceRegistry().getLifeCycleSources()) {
 243                                 lifeCycleSource.setItemLifecycleListener(statisticsContext.getItemLifeCycleListener());
 244                             }
 245                             break;
 246                         default:
 247                             LOG.warn("statistics work mode not supported: {}", targetWorkMode);
 248                     }
 249                 }
 250                 workMode = targetWorkMode;
 251             }
 252             workModeGuard.release();
 253             result = RpcResultBuilder.<Void>success().buildFuture();
 254         } else {
 255             result = RpcResultBuilder.<Void>failed()
 256                     .withError(RpcError.ErrorType.APPLICATION, "mode change already in progress")
 257                     .buildFuture();
 258         }
 259         return result;
 260     }
 261
 262     @Override
 263     public void close() {
 264         if (controlServiceRegistration != null) {
 265             controlServiceRegistration.close();
 266             controlServiceRegistration = null;
 267         }
 268     }
 269 }