opendaylight/netconf/config-persister-impl/src/main/java/org/opendaylight/controller/netconf/persist/impl/Util.java

   1 /*
   2  * Copyright (c) 2013 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.persist.impl;
  10
  11 import org.opendaylight.controller.config.api.ConflictingVersionException;
  12 import org.opendaylight.controller.netconf.api.NetconfMessage;
  13 import org.opendaylight.controller.netconf.client.NetconfClient;
  14 import org.opendaylight.controller.netconf.client.NetconfClientDispatcher;
  15 import org.opendaylight.controller.netconf.util.xml.XMLNetconfUtil;
  16 import org.opendaylight.controller.netconf.util.xml.XmlElement;
  17 import org.opendaylight.controller.netconf.util.xml.XmlNetconfConstants;
  18 import org.opendaylight.controller.netconf.util.xml.XmlUtil;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 import javax.xml.xpath.XPathConstants;
  23 import javax.xml.xpath.XPathExpression;
  24 import java.util.Set;
  25
  26 public final class Util {
  27     private static final Logger logger = LoggerFactory.getLogger(Util.class);
  28
  29
  30     public static boolean isSubset(NetconfClient netconfClient, Set<String> expectedCaps) {
  31         return isSubset(netconfClient.getCapabilities(), expectedCaps);
  32
  33     }
  34
  35     private static boolean isSubset(Set<String> currentCapabilities, Set<String> expectedCaps) {
  36         for (String exCap : expectedCaps) {
  37             if (currentCapabilities.contains(exCap) == false)
  38                 return false;
  39         }
  40         return true;
  41     }
  42
  43     public static void closeClientAndDispatcher(NetconfClient client) {
  44         NetconfClientDispatcher dispatcher = client.getNetconfClientDispatcher();
  45         Exception fromClient = null;
  46         try {
  47             client.close();
  48         } catch (Exception e) {
  49             fromClient = e;
  50         } finally {
  51             try {
  52                 dispatcher.close();
  53             } catch (Exception e) {
  54                 if (fromClient != null) {
  55                     e.addSuppressed(fromClient);
  56                 }
  57                 throw new RuntimeException("Error closing temporary client ", e);
  58             }
  59         }
  60     }
  61
  62
  63     public static void checkIsOk(XmlElement element, NetconfMessage responseMessage) throws ConflictingVersionException {
  64         if (element.getName().equals(XmlNetconfConstants.OK)) {
  65             return;
  66         }
  67
  68         if (element.getName().equals(XmlNetconfConstants.RPC_ERROR)) {
  69             logger.warn("Can not load last configuration, operation failed");
  70             // is it ConflictingVersionException ?
  71             XPathExpression xPathExpression = XMLNetconfUtil.compileXPath("/netconf:rpc-reply/netconf:rpc-error/netconf:error-info/netconf:error");
  72             String error = (String) XmlUtil.evaluateXPath(xPathExpression, element.getDomElement(), XPathConstants.STRING);
  73             if (error!=null && error.contains(ConflictingVersionException.class.getCanonicalName())) {
  74                 throw new ConflictingVersionException(error);
  75             }
  76             throw new IllegalStateException("Can not load last configuration, operation failed: "
  77                     + XmlUtil.toString(responseMessage.getDocument()));
  78         }
  79
  80         logger.warn("Can not load last configuration. Operation failed.");
  81         throw new IllegalStateException("Can not load last configuration. Operation failed: "
  82                 + XmlUtil.toString(responseMessage.getDocument()));
  83     }
  84 }