openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/lifecycle/LifecycleServiceImpl.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.Verify;
  11 import com.google.common.util.concurrent.FutureCallback;
  12 import com.google.common.util.concurrent.Futures;
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import java.util.ArrayList;
  15 import java.util.List;
  16 import java.util.Objects;
  17 import javax.annotation.Nonnull;
  18 import javax.annotation.Nullable;
  19 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
  20 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
  21 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
  22 import org.opendaylight.openflowplugin.api.openflow.device.DeviceContext;
  23 import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
  24 import org.opendaylight.openflowplugin.api.openflow.device.handlers.ClusterInitializationPhaseHandler;
  25 import org.opendaylight.openflowplugin.api.openflow.device.handlers.DeviceRemovedHandler;
  26 import org.opendaylight.openflowplugin.api.openflow.lifecycle.LifecycleService;
  27 import org.opendaylight.openflowplugin.api.openflow.lifecycle.MastershipChangeListener;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.role.service.rev150727.SetRoleOutput;
  29 import org.opendaylight.yangtools.yang.common.RpcResult;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class LifecycleServiceImpl implements LifecycleService {
  34
  35     private static final Logger LOG = LoggerFactory.getLogger(LifecycleServiceImpl.class);
  36
  37     private ClusterSingletonServiceRegistration registration;
  38     private ClusterInitializationPhaseHandler clusterInitializationPhaseHandler;
  39     private final List<DeviceRemovedHandler> deviceRemovedHandlers = new ArrayList<>();
  40     private ServiceGroupIdentifier serviceGroupIdentifier;
  41     private DeviceInfo deviceInfo;
  42     private boolean terminationState = false;
  43     private final MastershipChangeListener mastershipChangeListener;
  44
  45
  46     public LifecycleServiceImpl(@Nonnull final MastershipChangeListener mastershipChangeListener) {
  47         this.mastershipChangeListener = mastershipChangeListener;
  48     }
  49
  50     @Override
  51     public void makeDeviceSlave(final DeviceContext deviceContext) {
  52
  53         final DeviceInfo deviceInf = Objects.isNull(deviceInfo) ? deviceContext.getDeviceInfo() : deviceInfo;
  54
  55         Futures.addCallback(deviceContext.makeDeviceSlave(), new FutureCallback<RpcResult<SetRoleOutput>>() {
  56             @Override
  57             public void onSuccess(@Nullable RpcResult<SetRoleOutput> setRoleOutputRpcResult) {
  58                 if (LOG.isDebugEnabled()) {
  59                     LOG.debug("Role SLAVE was successfully propagated on device, node {}",
  60                             deviceContext.getDeviceInfo().getLOGValue());
  61                 }
  62                 mastershipChangeListener.onSlaveRoleAcquired(deviceInf);
  63             }
  64
  65             @Override
  66             public void onFailure(Throwable throwable) {
  67                 LOG.warn("Was not able to set role SLAVE to device on node {} ",
  68                         deviceContext.getDeviceInfo().getLOGValue());
  69                 mastershipChangeListener.onSlaveRoleNotAcquired(deviceInf);
  70             }
  71         });
  72
  73     }
  74
  75     @Override
  76     public void instantiateServiceInstance() {
  77
  78         LOG.info("Starting clustering MASTER services for node {}", deviceInfo.getLOGValue());
  79         if (!clusterInitializationPhaseHandler.onContextInstantiateService(null)) {
  80             mastershipChangeListener.onNotAbleToStartMastership(deviceInfo);
  81         } else {
  82             mastershipChangeListener.onMasterRoleAcquired(deviceInfo);
  83         }
  84
  85     }
  86
  87     @Override
  88     public ListenableFuture<Void> closeServiceInstance() {
  89         return Futures.immediateFuture(null);
  90     }
  91
  92     @Override
  93     public ServiceGroupIdentifier getIdentifier() {
  94         return this.serviceGroupIdentifier;
  95     }
  96
  97     @Override
  98     public void close() {
  99         if (terminationState) {
 100             if (LOG.isDebugEnabled()) {
 101                 LOG.debug("LifecycleService is already in TERMINATION state.");
 102             }
 103         } else {
 104             this.terminationState = true;
 105
 106             // We are closing, so cleanup all managers now
 107             deviceRemovedHandlers.forEach(h -> h.onDeviceRemoved(deviceInfo));
 108
 109             // If we are still registered and we are not already closing, then close the registration
 110             if (Objects.nonNull(registration)) {
 111                 try {
 112                     if (LOG.isDebugEnabled()) {
 113                         LOG.debug("Closing clustering services for node {}", deviceInfo.getLOGValue());
 114                     }
 115                     registration.close();
 116                 } catch (final Exception e) {
 117                     LOG.debug("Failed to close clustering services for node {} with exception: ",
 118                             deviceInfo.getLOGValue(), e);
 119                 }
 120             }
 121         }
 122     }
 123
 124     @Override
 125     public void registerService(@Nonnull final ClusterSingletonServiceProvider singletonServiceProvider,
 126                                 @Nonnull final ClusterInitializationPhaseHandler initializationPhaseHandler,
 127                                 @Nonnull final ServiceGroupIdentifier serviceGroupIdentifier,
 128                                 @Nonnull final DeviceInfo deviceInfo) {
 129
 130         this.clusterInitializationPhaseHandler = initializationPhaseHandler;
 131         this.serviceGroupIdentifier = serviceGroupIdentifier;
 132         this.deviceInfo = deviceInfo;
 133         this.registration = Verify.verifyNotNull(
 134                 singletonServiceProvider.registerClusterSingletonService(this));
 135
 136         LOG.info("Registered clustering services for node {}", deviceInfo.getLOGValue());
 137
 138     }
 139
 140     @Override
 141     public void registerDeviceRemovedHandler(@Nonnull final DeviceRemovedHandler deviceRemovedHandler) {
 142         if (!deviceRemovedHandlers.contains(deviceRemovedHandler)) {
 143             deviceRemovedHandlers.add(deviceRemovedHandler);
 144         }
 145     }
 146
 147 }