openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/mastership/MastershipServiceManagerImpl.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.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.openflowplugin.rf.state.rev170713.ResultState;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22
  23 public class MastershipServiceManagerImpl implements MastershipChangeServiceManager {
  24
  25     private static final Logger LOG = LoggerFactory.getLogger(MastershipServiceManagerImpl.class);
  26
  27     private final List<MastershipChangeService> serviceGroup = new LinkedList<>();
  28     private MasterChecker masterChecker;
  29
  30     @Nonnull
  31     @Override
  32     public MastershipChangeRegistration register(@Nonnull MastershipChangeService service) {
  33         if (LOG.isDebugEnabled()) {
  34             LOG.debug("Mastership change service registered: {}", service);
  35         }
  36         MastershipServiceDelegate registration = new MastershipServiceDelegate(service, this);
  37         serviceGroup.add(registration);
  38         if (masterChecker.isAnyDeviceMastered()) {
  39             fireBecomeOwnerAfterRegistration(registration);
  40         }
  41         return registration;
  42
  43     }
  44
  45     @Override
  46     public void unregister(@Nonnull MastershipChangeService service) {
  47         serviceGroup.remove(service);
  48     }
  49
  50     @Override
  51     public void becomeMaster(@Nonnull final DeviceInfo deviceInfo) {
  52         serviceGroup.forEach(mastershipChangeService -> mastershipChangeService.onBecomeOwner(deviceInfo));
  53     }
  54
  55     @Override
  56     public void becomeSlaveOrDisconnect(@Nonnull final DeviceInfo deviceInfo) {
  57         serviceGroup.forEach(mastershipChangeService -> mastershipChangeService.onLoseOwnership(deviceInfo));
  58     }
  59
  60     @Override
  61     public void becomeMasterBeforeSubmittedDS(@Nonnull DeviceInfo deviceInfo, @Nonnull FutureCallback<ResultState> callback) {
  62         serviceGroup.forEach(mastershipChangeService -> mastershipChangeService.onDevicePrepared(deviceInfo, callback));
  63     }
  64
  65     @Override
  66     public void setMasterChecker(@Nonnull final MasterChecker masterChecker) {
  67         this.masterChecker = masterChecker;
  68     }
  69
  70     private void fireBecomeOwnerAfterRegistration(@Nonnull final  MastershipChangeService service) {
  71         masterChecker.listOfMasteredDevices().forEach(service::onBecomeOwner);
  72     }
  73 }