vpnservice/elanmanager/elanmanager-impl/src/main/java/org/opendaylight/netvirt/elan/utils/ElanClusterUtils.java

   1 /*
   2  * Copyright (c) 2016 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.elan.utils;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.util.concurrent.Futures;
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import com.google.common.util.concurrent.MoreExecutors;
  14 import com.google.common.util.concurrent.SettableFuture;
  15 import java.util.Collections;
  16 import java.util.List;
  17 import java.util.concurrent.Callable;
  18 import java.util.function.Function;
  19 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  20 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
  21 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  22 import org.opendaylight.genius.datastoreutils.DataStoreJobCoordinator;
  23 import org.opendaylight.genius.utils.clustering.EntityOwnershipUtils;
  24 import org.opendaylight.genius.utils.hwvtep.HwvtepSouthboundConstants;
  25 import org.opendaylight.netvirt.elan.l2gw.utils.SettableFutureCallback;
  26 import org.opendaylight.yangtools.yang.binding.DataObject;
  27 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 public final class ElanClusterUtils {
  32     private static final Logger LOG = LoggerFactory.getLogger(ElanClusterUtils.class);
  33
  34     private ElanClusterUtils() {
  35     }
  36
  37     public static void runOnlyInOwnerNode(EntityOwnershipUtils entityOwnershipUtils, String jobDesc, Runnable job) {
  38         entityOwnershipUtils.runOnlyInOwnerNode(HwvtepSouthboundConstants.ELAN_ENTITY_TYPE,
  39             HwvtepSouthboundConstants.ELAN_ENTITY_NAME, DataStoreJobCoordinator.getInstance(), jobDesc, job);
  40     }
  41
  42     public static void runOnlyInOwnerNode(EntityOwnershipUtils entityOwnershipUtils, String jobKey, String jobDesc,
  43             Callable<List<ListenableFuture<Void>>> job) {
  44         entityOwnershipUtils.runOnlyInOwnerNode(HwvtepSouthboundConstants.ELAN_ENTITY_TYPE,
  45             HwvtepSouthboundConstants.ELAN_ENTITY_NAME, DataStoreJobCoordinator.getInstance(), jobKey, jobDesc, job);
  46     }
  47
  48     public static <T extends DataObject> void asyncReadAndExecute(final DataBroker broker,
  49                                                                   final LogicalDatastoreType datastoreType,
  50                                                                   final InstanceIdentifier<T> iid,
  51                                                                   final String jobKey,
  52                                                                   final Function<Optional<T>, Void> function) {
  53         DataStoreJobCoordinator.getInstance().enqueueJob(jobKey, () -> {
  54             SettableFuture settableFuture = SettableFuture.create();
  55             List<ListenableFuture<Void>> futures = Collections.singletonList(settableFuture);
  56
  57             ReadWriteTransaction tx = broker.newReadWriteTransaction();
  58
  59             Futures.addCallback(tx.read(datastoreType, iid),
  60                                 new SettableFutureCallback<Optional<T>>(settableFuture) {
  61                         @Override
  62                         public void onSuccess(Optional<T> data) {
  63                             function.apply(data);
  64                             super.onSuccess(data);
  65                         }
  66                     }, MoreExecutors.directExecutor());
  67
  68             return futures;
  69         }, ElanConstants.JOB_MAX_RETRIES);
  70     }
  71 }