netconf/mdsal-netconf-connector/src/main/java/org/opendaylight/netconf/mdsal/connector/ops/DiscardChanges.java

   1 /*
   2  * Copyright (c) 2015 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.netconf.mdsal.connector.ops;
   9
  10 import java.util.HashMap;
  11 import java.util.Map;
  12 import org.opendaylight.netconf.api.DocumentedException;
  13 import org.opendaylight.netconf.api.DocumentedException.ErrorTag;
  14 import org.opendaylight.netconf.api.xml.XmlElement;
  15 import org.opendaylight.netconf.api.xml.XmlNetconfConstants;
  16 import org.opendaylight.netconf.mdsal.connector.TransactionProvider;
  17 import org.opendaylight.netconf.util.mapping.AbstractSingletonNetconfOperation;
  18 import org.opendaylight.yangtools.yang.common.ErrorSeverity;
  19 import org.opendaylight.yangtools.yang.common.ErrorType;
  20 import org.slf4j.Logger;
  21 import org.slf4j.LoggerFactory;
  22 import org.w3c.dom.Document;
  23 import org.w3c.dom.Element;
  24
  25 public class DiscardChanges extends AbstractSingletonNetconfOperation {
  26     private static final Logger LOG = LoggerFactory.getLogger(DiscardChanges.class);
  27     private static final String OPERATION_NAME = "discard-changes";
  28
  29     private final TransactionProvider transactionProvider;
  30
  31     public DiscardChanges(final String netconfSessionIdForReporting, final TransactionProvider transactionProvider) {
  32         super(netconfSessionIdForReporting);
  33         this.transactionProvider = transactionProvider;
  34     }
  35
  36     @Override
  37     protected Element handleWithNoSubsequentOperations(final Document document, final XmlElement operationElement)
  38             throws DocumentedException {
  39
  40         try {
  41             transactionProvider.abortTransaction();
  42         } catch (final IllegalStateException e) {
  43             LOG.warn("Abort failed ", e);
  44             final Map<String, String> errorInfo = new HashMap<>();
  45             errorInfo.put(ErrorTag.OPERATION_FAILED.name(),
  46                     "Operation failed. Use 'get-config' or 'edit-config' before triggering "
  47                             + OPERATION_NAME + " operation");
  48             throw new DocumentedException(e.getMessage(), e, ErrorType.APPLICATION, ErrorTag.OPERATION_FAILED,
  49                     ErrorSeverity.ERROR, errorInfo);
  50         }
  51         return document.createElement(XmlNetconfConstants.OK);
  52     }
  53
  54     @Override
  55     protected String getOperationName() {
  56         return OPERATION_NAME;
  57     }
  58 }