openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/mastership/MastershipChangeServiceManagerFactoryImpl.java

   1 /*
   2  * Copyright (c) 2017 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.mastership;
   9
  10 import com.google.common.util.concurrent.FutureCallback;
  11 import java.util.LinkedList;
  12 import java.util.List;
  13 import javax.annotation.Nonnull;
  14 import org.opendaylight.openflowplugin.api.openflow.device.DeviceInfo;
  15 import org.opendaylight.openflowplugin.api.openflow.lifecycle.MasterChecker;
  16 import org.opendaylight.openflowplugin.api.openflow.mastership.MastershipChangeRegistration;
  17 import org.opendaylight.openflowplugin.api.openflow.mastership.MastershipChangeService;
  18 import org.opendaylight.openflowplugin.api.openflow.mastership.MastershipChangeServiceManager;
  19 import org.opendaylight.openflowplugin.api.openflow.mastership.MastershipChangeServiceManagerFactory;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.rf.state.rev170713.ResultState;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public class MastershipChangeServiceManagerFactoryImpl implements MastershipChangeServiceManagerFactory {
  25
  26     @Override
  27     public MastershipChangeServiceManager newInstance() {
  28         return new MastershipChangeServiceManagerImpl();
  29     }
  30
  31     private static final class MastershipChangeServiceManagerImpl implements MastershipChangeServiceManager {
  32
  33         private static final Logger LOG = LoggerFactory.getLogger(MastershipChangeServiceManagerImpl.class);
  34
  35         private final List<MastershipChangeService> serviceGroup = new LinkedList<>();
  36         private MasterChecker masterChecker;
  37
  38         @Nonnull
  39         @Override
  40         public MastershipChangeRegistration register(@Nonnull MastershipChangeService service) {
  41             if (LOG.isDebugEnabled()) {
  42                 LOG.debug("Mastership change service registered: {}", service);
  43             }
  44             MastershipServiceDelegate registration = new MastershipServiceDelegate(service, this);
  45             serviceGroup.add(registration);
  46             if (masterChecker.isAnyDeviceMastered()) {
  47                 fireBecomeOwnerAfterRegistration(registration);
  48             }
  49             return registration;
  50
  51         }
  52
  53         @Override
  54         public void unregister(@Nonnull MastershipChangeService service) {
  55             serviceGroup.remove(service);
  56         }
  57
  58         @Override
  59         public void close() {
  60             serviceGroup.clear();
  61         }
  62
  63         @Override
  64         public void becomeMaster(@Nonnull final DeviceInfo deviceInfo) {
  65             serviceGroup.forEach(mastershipChangeService -> mastershipChangeService.onBecomeOwner(deviceInfo));
  66         }
  67
  68         @Override
  69         public void becomeSlaveOrDisconnect(@Nonnull final DeviceInfo deviceInfo) {
  70             serviceGroup.forEach(mastershipChangeService -> mastershipChangeService.onLoseOwnership(deviceInfo));
  71         }
  72
  73         @Override
  74         public void becomeMasterBeforeSubmittedDS(@Nonnull DeviceInfo deviceInfo, @Nonnull FutureCallback<ResultState> callback) {
  75             serviceGroup.forEach(mastershipChangeService -> mastershipChangeService.onDevicePrepared(deviceInfo, callback));
  76         }
  77
  78         @Override
  79         public void setMasterChecker(@Nonnull final MasterChecker masterChecker) {
  80             this.masterChecker = masterChecker;
  81         }
  82
  83         private void fireBecomeOwnerAfterRegistration(@Nonnull final MastershipChangeService service) {
  84             masterChecker.listOfMasteredDevices().forEach(service::onBecomeOwner);
  85         }
  86     }
  87 }