restconf/sal-rest-connector/src/main/java/org/opendaylight/restconf/restful/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.restful.utils;
   9
  10 import com.google.common.util.concurrent.CheckedFuture;
  11 import javax.ws.rs.core.Response;
  12 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  13 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  14 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
  15 import org.opendaylight.controller.md.sal.dom.api.DOMTransactionChain;
  16 import org.opendaylight.restconf.restful.transaction.TransactionVarsWrapper;
  17 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  18
  19 /**
  20  * Util class for delete specific data in config DS.
  21  *
  22  */
  23 public final class DeleteDataTransactionUtil {
  24
  25     private DeleteDataTransactionUtil() {
  26         throw new UnsupportedOperationException("Util class.");
  27     }
  28
  29     /**
  30      * Delete data from DS via transaction.
  31      *
  32      * @param transactionNode
  33      *             Wrapper for data of transaction
  34      * @return {@link Response}
  35      */
  36     public static Response deleteData(final TransactionVarsWrapper transactionNode) {
  37         final CheckedFuture<Void, TransactionCommitFailedException> future = submitData(
  38                 transactionNode.getTransactionChain(), transactionNode.getTransactionChain().newReadWriteTransaction(),
  39                 transactionNode.getInstanceIdentifier().getInstanceIdentifier());
  40         final ResponseFactory response = new ResponseFactory();
  41         FutureCallbackTx.addCallback(future, RestconfDataServiceConstant.DeleteData.DELETE_TX_TYPE, response);
  42         return response.build();
  43     }
  44
  45     /**
  46      * Delete data via transaction. Return error if data to delete does not exist.
  47      *
  48      * @param transactionChain
  49      *             transaction chain
  50      * @param readWriteTx
  51      *             read and write transaction
  52      * @param path
  53      *             path of data to delete
  54      * @return {@link CheckedFuture}
  55      */
  56     private static CheckedFuture<Void, TransactionCommitFailedException> submitData(
  57             final DOMTransactionChain transactionChain, final DOMDataReadWriteTransaction readWriteTx,
  58             final YangInstanceIdentifier path) {
  59         TransactionUtil.checkItemExists(transactionChain, readWriteTx, LogicalDatastoreType.CONFIGURATION, path,
  60                 RestconfDataServiceConstant.DeleteData.DELETE_TX_TYPE);
  61         readWriteTx.delete(LogicalDatastoreType.CONFIGURATION, path);
  62         return readWriteTx.submit();
  63     }
  64 }