opendaylight/netconf/mdsal-netconf-connector/src/main/java/org/opendaylight/controller/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
   9 package org.opendaylight.controller.netconf.mdsal.connector.ops;
  10
  11 import com.google.common.base.Optional;
  12 import java.util.HashMap;
  13 import java.util.Map;
  14 import org.opendaylight.controller.netconf.api.NetconfDocumentedException;
  15 import org.opendaylight.controller.netconf.api.NetconfDocumentedException.ErrorSeverity;
  16 import org.opendaylight.controller.netconf.api.NetconfDocumentedException.ErrorTag;
  17 import org.opendaylight.controller.netconf.api.NetconfDocumentedException.ErrorType;
  18 import org.opendaylight.controller.netconf.api.xml.XmlNetconfConstants;
  19 import org.opendaylight.controller.netconf.mdsal.connector.TransactionProvider;
  20 import org.opendaylight.controller.netconf.util.mapping.AbstractLastNetconfOperation;
  21 import org.opendaylight.controller.netconf.util.xml.XmlElement;
  22 import org.opendaylight.controller.netconf.util.xml.XmlUtil;
  23 import org.slf4j.Logger;
  24 import org.slf4j.LoggerFactory;
  25 import org.w3c.dom.Document;
  26 import org.w3c.dom.Element;
  27
  28 public class DiscardChanges extends AbstractLastNetconfOperation{
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(DiscardChanges.class);
  31
  32     private static final String OPERATION_NAME = "discard-changes";
  33
  34     private final TransactionProvider transactionProvider;
  35
  36     public DiscardChanges(final String netconfSessionIdForReporting, final TransactionProvider transactionProvider) {
  37         super(netconfSessionIdForReporting);
  38         this.transactionProvider = transactionProvider;
  39     }
  40
  41     @Override
  42     protected Element handleWithNoSubsequentOperations(final Document document, final XmlElement operationElement) throws NetconfDocumentedException {
  43         operationElement.getOnlyChildElement(OPERATION_NAME);
  44
  45         try {
  46             transactionProvider.abortTransaction();
  47         } catch (IllegalStateException e) {
  48             LOG.warn("Abort failed ", e);
  49             final Map<String, String> errorInfo = new HashMap<>();
  50             errorInfo
  51                     .put(ErrorTag.operation_failed.name(),
  52                             "Operation failed. Use 'get-config' or 'edit-config' before triggering 'discard-changes' operation");
  53             throw new NetconfDocumentedException(e.getMessage(), e, ErrorType.application, ErrorTag.operation_failed,
  54                     ErrorSeverity.error, errorInfo);
  55         }
  56         return XmlUtil.createElement(document, XmlNetconfConstants.OK, Optional.<String>absent());
  57     }
  58
  59     @Override
  60     protected String getOperationName() {
  61         return OPERATION_NAME;
  62     }
  63 }