netconf/netconf-topology-singleton/src/main/java/org/opendaylight/netconf/topology/singleton/impl/tx/NetconfReadOnlyTransaction.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
   9 package org.opendaylight.netconf.topology.singleton.impl.tx;
  10
  11 import akka.actor.ActorSystem;
  12 import akka.dispatch.OnComplete;
  13 import com.google.common.base.Function;
  14 import com.google.common.base.Optional;
  15 import com.google.common.util.concurrent.CheckedFuture;
  16 import com.google.common.util.concurrent.Futures;
  17 import com.google.common.util.concurrent.SettableFuture;
  18 import javax.annotation.Nullable;
  19 import org.opendaylight.controller.config.util.xml.DocumentedException;
  20 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  21 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  23 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  24 import org.opendaylight.netconf.topology.singleton.api.NetconfDOMTransaction;
  25 import org.opendaylight.netconf.topology.singleton.messages.NormalizedNodeMessage;
  26 import org.opendaylight.yangtools.yang.common.RpcError;
  27 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  28 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  29 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32 import scala.concurrent.Future;
  33
  34 public class NetconfReadOnlyTransaction implements DOMDataReadOnlyTransaction {
  35
  36     private static final Logger LOG = LoggerFactory.getLogger(NetconfReadOnlyTransaction.class);
  37
  38     private final RemoteDeviceId id;
  39     private final NetconfDOMTransaction delegate;
  40     private final ActorSystem actorSystem;
  41
  42     public NetconfReadOnlyTransaction(final RemoteDeviceId id,
  43                                       final ActorSystem actorSystem,
  44                                       final NetconfDOMTransaction delegate) {
  45         this.id = id;
  46         this.delegate = delegate;
  47         this.actorSystem = actorSystem;
  48     }
  49
  50     @Override
  51     public void close() {
  52         //NOOP
  53     }
  54
  55     @Override
  56     public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read(final LogicalDatastoreType store,
  57                                                                                    final YangInstanceIdentifier path) {
  58
  59         LOG.trace("{}: Read {} via NETCONF: {}", id, store, path);
  60
  61         final Future<Optional<NormalizedNodeMessage>> future = delegate.read(store, path);
  62         final SettableFuture<Optional<NormalizedNode<?, ?>>> settableFuture = SettableFuture.create();
  63         final CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> checkedFuture;
  64         checkedFuture = Futures.makeChecked(settableFuture, new Function<Exception, ReadFailedException>() {
  65             @Nullable
  66             @Override
  67             public ReadFailedException apply(Exception cause) {
  68                 if (cause.getCause() instanceof DocumentedException) {
  69                     final DocumentedException exception = (DocumentedException) cause.getCause();
  70                     if (exception.getErrorSeverity() == DocumentedException.ErrorSeverity.ERROR &&
  71                             exception.getErrorType() == DocumentedException.ErrorType.TRANSPORT &&
  72                             exception.getErrorTag() == DocumentedException.ErrorTag.RESOURCE_DENIED) {
  73                         final RpcError error = RpcResultBuilder.newError(
  74                                 RpcError.ErrorType.TRANSPORT,
  75                                 exception.getErrorTag().getTagValue(),
  76                                 exception.getMessage());
  77                         return new ReadFailedException("Read from transaction failed", error);
  78                     }
  79                 }
  80                 return new ReadFailedException("Read from transaction failed", cause);
  81             }
  82         });
  83         future.onComplete(new OnComplete<Optional<NormalizedNodeMessage>>() {
  84             @Override
  85             public void onComplete(final Throwable throwable,
  86                                    final Optional<NormalizedNodeMessage> normalizedNodeMessage) throws Throwable {
  87                 if (throwable == null) {
  88                     if (normalizedNodeMessage.isPresent()) {
  89                         settableFuture.set(normalizedNodeMessage.transform(new Function<NormalizedNodeMessage,
  90                                 NormalizedNode<?, ?>>() {
  91
  92                             @Nullable
  93                             @Override
  94                             public NormalizedNode<?, ?> apply(final NormalizedNodeMessage input) {
  95                                 return input.getNode();
  96                             }
  97                         }));
  98                     } else {
  99                         settableFuture.set(Optional.absent());
 100                     }
 101                 } else {
 102                     settableFuture.setException(throwable);
 103                 }
 104             }
 105         }, actorSystem.dispatcher());
 106         return checkedFuture;
 107     }
 108
 109     @Override
 110     public CheckedFuture<Boolean, ReadFailedException> exists(final LogicalDatastoreType store,
 111                                                               final YangInstanceIdentifier path) {
 112
 113         LOG.trace("{}: Exists {} via NETCONF: {}", id, store, path);
 114
 115         final Future<Boolean> existsFuture = delegate.exists(store, path);
 116         final SettableFuture<Boolean> settableFuture = SettableFuture.create();
 117         final CheckedFuture<Boolean, ReadFailedException> checkedFuture;
 118         checkedFuture = Futures.makeChecked(settableFuture, new Function<Exception, ReadFailedException>() {
 119             @Nullable
 120             @Override
 121             public ReadFailedException apply(Exception cause) {
 122                 return new ReadFailedException("Read from transaction failed", cause);
 123             }
 124         });
 125         existsFuture.onComplete(new OnComplete<Boolean>() {
 126             @Override
 127             public void onComplete(final Throwable throwable, final Boolean result) throws Throwable {
 128                 if (throwable == null) {
 129                     settableFuture.set(result);
 130                 } else {
 131                     settableFuture.setException(throwable);
 132                 }
 133             }
 134         }, actorSystem.dispatcher());
 135         return checkedFuture;
 136     }
 137
 138     @Override
 139     public Object getIdentifier() {
 140         return this;
 141     }
 142 }