vpnmanager/impl/src/main/java/org/opendaylight/netvirt/vpnmanager/TransactionUtil.java

   1 /*
   2  * Copyright (c) 2015 - 2017 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.vpnmanager;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.util.concurrent.FutureCallback;
  12 import com.google.common.util.concurrent.Futures;
  13 import com.google.common.util.concurrent.MoreExecutors;
  14 import java.util.concurrent.ExecutionException;
  15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  16 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
  17 import org.opendaylight.controller.md.sal.binding.api.WriteTransaction;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.yangtools.yang.binding.DataObject;
  20 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  21 import org.slf4j.Logger;
  22 import org.slf4j.LoggerFactory;
  23
  24 public final class TransactionUtil {
  25     private static final Logger LOG = LoggerFactory.getLogger(TransactionUtil.class);
  26
  27     private TransactionUtil() {
  28     }
  29
  30     public static final FutureCallback<Void> DEFAULT_CALLBACK = new FutureCallback<Void>() {
  31         @Override
  32         public void onSuccess(Void result) {
  33             LOG.debug("onSuccess: Success in Datastore operation");
  34         }
  35
  36         @Override
  37         public void onFailure(Throwable error) {
  38             LOG.error("onFailure: Error in Datastore operation", error);
  39         }
  40     };
  41
  42     public static <T extends DataObject> Optional<T> read(DataBroker dataBroker, LogicalDatastoreType datastoreType,
  43             InstanceIdentifier<T> path) {
  44
  45         ReadOnlyTransaction tx = dataBroker.newReadOnlyTransaction();
  46
  47         Optional<T> result;
  48         try {
  49             result = tx.read(datastoreType, path).get();
  50         } catch (InterruptedException | ExecutionException e) {
  51             LOG.debug("read: Error while reading data from path {}", path);
  52             throw new RuntimeException(e);
  53         }
  54         return result;
  55     }
  56
  57     public static <T extends DataObject> void asyncWrite(DataBroker dataBroker, LogicalDatastoreType datastoreType,
  58             InstanceIdentifier<T> path, T data, FutureCallback<Void> callback) {
  59         WriteTransaction tx = dataBroker.newWriteOnlyTransaction();
  60         tx.put(datastoreType, path, data, true);
  61         Futures.addCallback(tx.submit(), callback, MoreExecutors.directExecutor());
  62     }
  63
  64     public static <T extends DataObject> void syncWrite(DataBroker dataBroker, LogicalDatastoreType datastoreType,
  65             InstanceIdentifier<T> path, T data) {
  66         WriteTransaction tx = dataBroker.newWriteOnlyTransaction();
  67         tx.put(datastoreType, path, data, WriteTransaction.CREATE_MISSING_PARENTS);
  68         try {
  69             tx.submit().get();
  70         } catch (InterruptedException | ExecutionException e) {
  71             LOG.error("syncWrite: Error writing VPN instance to ID info to datastore (path, data) : ({}, {})", path,
  72                     data);
  73             throw new RuntimeException(e.getMessage(), e);
  74         }
  75     }
  76 }