openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/lifecycle/ContextChainImpl.java

   1 /*
   2  * Copyright (c) 2016 Pantheon Technologies s.r.o. 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.lifecycle;
   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.ArrayList;
  14 import java.util.HashSet;
  15 import java.util.List;
  16 import java.util.Set;
  17 import javax.annotation.Nullable;
  18 import org.eclipse.jdt.annotation.NonNull;
  19 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  20 import org.opendaylight.openflowplugin.api.openflow.OFPContext;
  21 import org.opendaylight.openflowplugin.api.openflow.connection.ConnectionContext;
  22 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  23 import org.opendaylight.openflowplugin.api.openflow.lifecycle.ContextChain;
  24 import org.opendaylight.openflowplugin.api.openflow.lifecycle.LifecycleService;
  25 import org.opendaylight.openflowplugin.api.openflow.rpc.RpcContext;
  26 import org.opendaylight.openflowplugin.api.openflow.statistics.StatisticsContext;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflow.provider.config.rev160510.ContextChainState;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public class ContextChainImpl implements ContextChain {
  32
  33     private static final Logger LOG = LoggerFactory.getLogger(ContextChainImpl.class);
  34
  35     private Set<OFPContext> contexts = new HashSet<>();
  36     private StatisticsContext statisticsContext;
  37     private DeviceContext deviceContext;
  38     private RpcContext rpcContext;
  39     private volatile ContextChainState contextChainState;
  40     private LifecycleService lifecycleService;
  41     private ConnectionContext primaryConnectionContext;
  42
  43     public ContextChainImpl() {
  44         this.contextChainState = ContextChainState.INITIALIZED;
  45     }
  46
  47     @Override
  48     public boolean isReady() {
  49         return false;
  50     }
  51
  52     @Override
  53     public <T extends OFPContext> void addContext(final T context) {
  54         if (context instanceof StatisticsContext) {
  55             this.statisticsContext = (StatisticsContext) context;
  56         } else {
  57             if (context instanceof DeviceContext) {
  58                 this.deviceContext = (DeviceContext) context;
  59             } else {
  60                 if (context instanceof RpcContext) {
  61                     this.rpcContext = (RpcContext) context;
  62                 }
  63             }
  64         }
  65         contexts.add(context);
  66     }
  67
  68     @Override
  69     public void addLifecycleService(final LifecycleService lifecycleService) {
  70         this.lifecycleService = lifecycleService;
  71     }
  72
  73     @Override
  74     public ListenableFuture<Void> stopChain() {
  75         //TODO: stopClusterServices change parameter
  76         final List<ListenableFuture<Void>> futureList = new ArrayList<>();
  77         futureList.add(statisticsContext.stopClusterServices(true));
  78         futureList.add(rpcContext.stopClusterServices(false));
  79         futureList.add(deviceContext.stopClusterServices(false));
  80
  81         return Futures.transform(Futures.successfulAsList(futureList), new Function<List<Void>, Void>() {
  82             @Nullable
  83             @Override
  84             public Void apply(@Nullable List<Void> input) {
  85                 LOG.debug("Closed clustering MASTER services for node {}", deviceContext.getDeviceInfo().getLOGValue());
  86                 contextChainState = ContextChainState.WORKINGSLAVE;
  87                 return null;
  88             }
  89         });
  90     }
  91
  92     @Override
  93     public ListenableFuture<Void> startChain() {
  94         if (ContextChainState.INITIALIZED.equals(this.contextChainState)) {
  95             return Futures.transform(this.statisticsContext.initialGatherDynamicData(), new Function<Boolean, Void>() {
  96                 @Nullable
  97                 @Override
  98                 public Void apply(@Nullable Boolean aBoolean) {
  99                     contextChainState = ContextChainState.WORKINGMASTER;
 100                     return null;
 101                 }
 102             });
 103         } else {
 104             this.contextChainState = ContextChainState.WORKINGMASTER;
 105         }
 106         return Futures.immediateFuture(null);
 107     }
 108
 109     @Override
 110     public void close() {
 111
 112     }
 113
 114     @Override
 115     public void changePrimaryConnection(final ConnectionContext connectionContext) {
 116         for (OFPContext context : contexts) {
 117             context.replaceConnection(connectionContext);
 118         }
 119         this.primaryConnectionContext = connectionContext;
 120     }
 121
 122     @Override
 123     public ContextChainState getContextChainState() {
 124         return contextChainState;
 125     }
 126
 127     @Override
 128     public ListenableFuture<Void> connectionDropped() {
 129         ContextChainState oldState = this.contextChainState;
 130         this.contextChainState = ContextChainState.SLEEPING;
 131         if (oldState.equals(ContextChainState.WORKINGMASTER)) {
 132             return this.stopChain();
 133         }
 134         return Futures.immediateFuture(null);
 135     }
 136
 137     @Override
 138     public ConnectionContext getPrimaryConnectionContext() {
 139         return primaryConnectionContext;
 140     }
 141
 142     @Override
 143     public void sleepTheChainAndDropConnection() {
 144         this.contextChainState = ContextChainState.SLEEPING;
 145         this.primaryConnectionContext.closeConnection(false);
 146     }
 147
 148     @Override
 149     public void registerServices(@NonNull final ClusterSingletonServiceProvider clusterSingletonServiceProvider) {
 150         this.contextChainState = ContextChainState.WORKINGSLAVE;
 151         this.lifecycleService.registerService(
 152                 clusterSingletonServiceProvider,
 153                 this.deviceContext,
 154                 this.deviceContext.getServiceIdentifier(),
 155                 this.deviceContext.getDeviceInfo());
 156     }
 157
 158     @Override
 159     public void makeDeviceSlave() {
 160         this.lifecycleService.makeDeviceSlave(this.deviceContext);
 161     }
 162
 163 }