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

   1 /*
   2  * Copyright (c) 2015 - 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.vpnmanager;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.util.concurrent.CheckedFuture;
  12 import com.google.common.util.concurrent.FutureCallback;
  13 import com.google.common.util.concurrent.Futures;
  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.controller.md.sal.common.api.data.TransactionCommitFailedException;
  20 import org.opendaylight.yangtools.yang.binding.DataObject;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 public class TransactionUtil {
  26     private static final Logger LOG = LoggerFactory.getLogger(TransactionUtil.class);
  27
  28     private TransactionUtil() {
  29     }
  30
  31     public static final FutureCallback<Void> DEFAULT_CALLBACK = new FutureCallback<Void>() {
  32         public void onSuccess(Void result) {
  33             LOG.debug("Success in Datastore operation");
  34         }
  35
  36         public void onFailure(Throwable error) {
  37             LOG.error("Error in Datastore operation", error);
  38         };
  39     };
  40
  41     public static <T extends DataObject> Optional<T> read(DataBroker dataBroker, LogicalDatastoreType datastoreType,
  42                                                     InstanceIdentifier<T> path) {
  43
  44         ReadOnlyTransaction tx = dataBroker.newReadOnlyTransaction();
  45
  46         Optional<T> result;
  47         try {
  48             result = tx.read(datastoreType, path).get();
  49         } catch (Exception e) {
  50             throw new RuntimeException(e);
  51         }
  52
  53         return result;
  54     }
  55
  56     public static <T extends DataObject> void asyncWrite(DataBroker dataBroker, LogicalDatastoreType datastoreType,
  57                                                    InstanceIdentifier<T> path, T data,
  58                                                    FutureCallback<Void> callback) {
  59         WriteTransaction tx = dataBroker.newWriteOnlyTransaction();
  60         tx.put(datastoreType, path, data, true);
  61         Futures.addCallback(tx.submit(), callback);
  62     }
  63
  64     public static <T extends DataObject> void syncWrite(DataBroker dataBroker, LogicalDatastoreType datastoreType,
  65                                                   InstanceIdentifier<T> path,
  66                                                   T data, FutureCallback<Void> callback) {
  67         WriteTransaction tx = dataBroker.newWriteOnlyTransaction();
  68         tx.put(datastoreType, path, data, true);
  69         CheckedFuture<Void, TransactionCommitFailedException> futures = tx.submit();
  70         try {
  71             futures.get();
  72         } catch (InterruptedException | ExecutionException e) {
  73             LOG.error("Error writing VPN instance to ID info to datastore (path, data) : ({}, {})", path, data);
  74             throw new RuntimeException(e.getMessage());
  75         }
  76     }
  77 }