restconf/restconf-nb-rfc8040/src/main/java/org/opendaylight/restconf/nb/rfc8040/rests/utils/DeleteDataTransactionUtil.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. 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.restconf.nb.rfc8040.rests.utils;
   9
  10 import com.google.common.util.concurrent.FluentFuture;
  11 import javax.ws.rs.core.Response;
  12 import javax.ws.rs.core.Response.Status;
  13 import org.opendaylight.mdsal.common.api.CommitInfo;
  14 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  15 import org.opendaylight.restconf.nb.rfc8040.rests.transactions.RestconfStrategy;
  16 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  17
  18 /**
  19  * Util class for delete specific data in config DS.
  20  */
  21 public final class DeleteDataTransactionUtil {
  22
  23     private DeleteDataTransactionUtil() {
  24         throw new UnsupportedOperationException("Util class.");
  25     }
  26
  27     /**
  28      * Delete data from DS via transaction.
  29      *
  30      * @param strategy object that perform the actual DS operations
  31      * @return {@link Response}
  32      */
  33     public static Response deleteData(final RestconfStrategy strategy) {
  34         strategy.prepareReadWriteExecution();
  35         final YangInstanceIdentifier path = strategy.getInstanceIdentifier().getInstanceIdentifier();
  36         TransactionUtil.checkItemExists(strategy, LogicalDatastoreType.CONFIGURATION, path,
  37                 RestconfDataServiceConstant.DeleteData.DELETE_TX_TYPE);
  38         strategy.delete(LogicalDatastoreType.CONFIGURATION, path);
  39         final FluentFuture<? extends CommitInfo> future = strategy.commit();
  40         final ResponseFactory response = new ResponseFactory(Status.NO_CONTENT);
  41         //This method will close transactionChain if any
  42         FutureCallbackTx.addCallback(future, RestconfDataServiceConstant.DeleteData.DELETE_TX_TYPE, response,
  43                 strategy.getTransactionChain());
  44         return response.build();
  45     }
  46 }