aclservice/impl/src/main/java/org/opendaylight/netvirt/aclservice/recovery/AclServiceRecoveryHandler.java

   1 /*
   2  * Copyright (c) 2018 Ericsson India Global Services Pvt Ltd. 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.netvirt.aclservice.recovery;
   9
  10 import java.util.Queue;
  11 import javax.inject.Inject;
  12 import javax.inject.Singleton;
  13 import org.opendaylight.netvirt.aclservice.utils.AclServiceUtils;
  14 import org.opendaylight.serviceutils.srm.RecoverableListener;
  15 import org.opendaylight.serviceutils.srm.ServiceRecoveryInterface;
  16 import org.opendaylight.serviceutils.srm.ServiceRecoveryRegistry;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19
  20 @Singleton
  21 public class AclServiceRecoveryHandler implements ServiceRecoveryInterface {
  22
  23     private static final Logger LOG = LoggerFactory.getLogger(AclServiceRecoveryHandler.class);
  24     private final ServiceRecoveryRegistry serviceRecoveryRegistry;
  25
  26     @Inject
  27     public AclServiceRecoveryHandler(final ServiceRecoveryRegistry serviceRecoveryRegistry) {
  28         LOG.info("Registering IFM service recovery handlers");
  29         this.serviceRecoveryRegistry = serviceRecoveryRegistry;
  30         serviceRecoveryRegistry.registerServiceRecoveryRegistry(AclServiceUtils.getRecoverServiceRegistryKey(), this);
  31     }
  32
  33     private void deregisterListeners() {
  34         Queue<RecoverableListener> recoverableListeners =
  35                 serviceRecoveryRegistry.getRecoverableListeners(AclServiceUtils.getRecoverServiceRegistryKey());
  36         recoverableListeners.forEach((RecoverableListener::deregisterListener));
  37     }
  38
  39     private void registerListeners() {
  40         Queue<RecoverableListener> recoverableListeners =
  41                 serviceRecoveryRegistry.getRecoverableListeners(AclServiceUtils.getRecoverServiceRegistryKey());
  42         recoverableListeners.forEach((RecoverableListener::registerListener));
  43     }
  44
  45     @Override
  46     public void recoverService(final String entityId) {
  47         LOG.info("Recover IFM service by deregistering and registering all relevant listeners");
  48         deregisterListeners();
  49         registerListeners();
  50     }
  51 }