opendaylight/md-sal/sal-netconf-connector/src/main/java/org/opendaylight/controller/sal/connect/netconf/sal/NetconfDeviceDataReader.java

   1 /*
   2  * Copyright (c) 2014 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.controller.sal.connect.netconf.sal;
   9
  10 import static org.opendaylight.controller.sal.connect.netconf.util.NetconfMessageTransformUtil.CONFIG_SOURCE_RUNNING;
  11 import static org.opendaylight.controller.sal.connect.netconf.util.NetconfMessageTransformUtil.NETCONF_DATA_QNAME;
  12 import static org.opendaylight.controller.sal.connect.netconf.util.NetconfMessageTransformUtil.NETCONF_GET_CONFIG_QNAME;
  13 import static org.opendaylight.controller.sal.connect.netconf.util.NetconfMessageTransformUtil.NETCONF_GET_QNAME;
  14 import static org.opendaylight.controller.sal.connect.netconf.util.NetconfMessageTransformUtil.toFilterStructure;
  15
  16 import java.util.concurrent.ExecutionException;
  17
  18 import org.opendaylight.controller.md.sal.common.api.data.DataReader;
  19 import org.opendaylight.controller.sal.connect.netconf.util.NetconfMessageTransformUtil;
  20 import org.opendaylight.controller.sal.connect.util.RemoteDeviceId;
  21 import org.opendaylight.controller.sal.core.api.RpcImplementation;
  22 import org.opendaylight.yangtools.yang.common.RpcResult;
  23 import org.opendaylight.yangtools.yang.data.api.CompositeNode;
  24 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
  25 import org.opendaylight.yangtools.yang.data.api.Node;
  26 import org.opendaylight.yangtools.yang.data.api.SimpleNode;
  27
  28 public final class NetconfDeviceDataReader implements DataReader<InstanceIdentifier,CompositeNode> {
  29
  30     private final RpcImplementation rpc;
  31     private final RemoteDeviceId id;
  32
  33     public NetconfDeviceDataReader(final RemoteDeviceId id, final RpcImplementation rpc) {
  34         this.id = id;
  35         this.rpc = rpc;
  36     }
  37
  38     @Override
  39     public CompositeNode readConfigurationData(final InstanceIdentifier path) {
  40         final RpcResult<CompositeNode> result;
  41         try {
  42             result = rpc.invokeRpc(NETCONF_GET_CONFIG_QNAME,
  43                     NetconfMessageTransformUtil.wrap(NETCONF_GET_CONFIG_QNAME, CONFIG_SOURCE_RUNNING, toFilterStructure(path))).get();
  44         } catch (final InterruptedException e) {
  45             throw onInterruptedException(e);
  46         } catch (final ExecutionException e) {
  47             throw new RuntimeException(id + ": Read configuration data " + path + " failed", e);
  48         }
  49
  50         final CompositeNode data = result.getResult().getFirstCompositeByName(NETCONF_DATA_QNAME);
  51         return data == null ? null : (CompositeNode) findNode(data, path);
  52     }
  53
  54     private RuntimeException onInterruptedException(final InterruptedException e) {
  55         Thread.currentThread().interrupt();
  56         return new RuntimeException(id + ": Interrupted while waiting for response", e);
  57     }
  58
  59     @Override
  60     public CompositeNode readOperationalData(final InstanceIdentifier path) {
  61         final RpcResult<CompositeNode> result;
  62         try {
  63             result = rpc.invokeRpc(NETCONF_GET_QNAME, NetconfMessageTransformUtil.wrap(NETCONF_GET_QNAME, toFilterStructure(path))).get();
  64         } catch (final InterruptedException e) {
  65             throw onInterruptedException(e);
  66         } catch (final ExecutionException e) {
  67             throw new RuntimeException(id + ": Read operational data " + path + " failed", e);
  68         }
  69
  70         final CompositeNode data = result.getResult().getFirstCompositeByName(NETCONF_DATA_QNAME);
  71         return (CompositeNode) findNode(data, path);
  72     }
  73
  74     private static Node<?> findNode(final CompositeNode node, final InstanceIdentifier identifier) {
  75
  76         Node<?> current = node;
  77         for (final InstanceIdentifier.PathArgument arg : identifier.getPathArguments()) {
  78             if (current instanceof SimpleNode<?>) {
  79                 return null;
  80             } else if (current instanceof CompositeNode) {
  81                 final CompositeNode currentComposite = (CompositeNode) current;
  82
  83                 current = currentComposite.getFirstCompositeByName(arg.getNodeType());
  84                 if (current == null) {
  85                     current = currentComposite.getFirstCompositeByName(arg.getNodeType().withoutRevision());
  86                 }
  87                 if (current == null) {
  88                     current = currentComposite.getFirstSimpleByName(arg.getNodeType());
  89                 }
  90                 if (current == null) {
  91                     current = currentComposite.getFirstSimpleByName(arg.getNodeType().withoutRevision());
  92                 }
  93                 if (current == null) {
  94                     return null;
  95                 }
  96             }
  97         }
  98         return current;
  99     }
 100 }