netconf/netconf-topology-singleton/src/main/java/org/opendaylight/netconf/topology/singleton/impl/tx/ProxyReadAdapter.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.ActorRef;
  12 import akka.actor.ActorSystem;
  13 import akka.dispatch.OnComplete;
  14 import akka.pattern.Patterns;
  15 import akka.util.Timeout;
  16 import com.google.common.base.Optional;
  17 import com.google.common.util.concurrent.CheckedFuture;
  18 import com.google.common.util.concurrent.Futures;
  19 import com.google.common.util.concurrent.SettableFuture;
  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.netconf.sal.connect.util.RemoteDeviceId;
  23 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
  24 import org.opendaylight.netconf.topology.singleton.messages.NormalizedNodeMessage;
  25 import org.opendaylight.netconf.topology.singleton.messages.transactions.EmptyReadResponse;
  26 import org.opendaylight.netconf.topology.singleton.messages.transactions.ExistsRequest;
  27 import org.opendaylight.netconf.topology.singleton.messages.transactions.ReadRequest;
  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 class ProxyReadAdapter {
  35     private static final Logger LOG = LoggerFactory.getLogger(ProxyReadAdapter.class);
  36
  37     private final ActorRef masterTxActor;
  38     private final RemoteDeviceId id;
  39     private final ActorSystem actorSystem;
  40     private final Timeout askTimeout;
  41
  42     ProxyReadAdapter(final ActorRef masterTxActor, final RemoteDeviceId id, final ActorSystem actorSystem,
  43                             final Timeout askTimeout) {
  44         this.masterTxActor = masterTxActor;
  45         this.id = id;
  46         this.actorSystem = actorSystem;
  47         this.askTimeout = askTimeout;
  48     }
  49
  50     public void close() {
  51         //noop
  52     }
  53
  54     public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read(final LogicalDatastoreType store,
  55                                                                                    final YangInstanceIdentifier path) {
  56         LOG.trace("{}: Read {} via NETCONF: {}", id, store, path);
  57
  58         final Future<Object> future = Patterns.ask(masterTxActor, new ReadRequest(store, path), askTimeout);
  59         final SettableFuture<Optional<NormalizedNode<?, ?>>> settableFuture = SettableFuture.create();
  60         future.onComplete(new OnComplete<Object>() {
  61             @Override
  62             public void onComplete(final Throwable failure,
  63                                    final Object success) throws Throwable {
  64                 if (failure != null) { // ask timeout
  65                     final Exception exception = NetconfTopologyUtils.createMasterIsDownException(id);
  66                     settableFuture.setException(exception);
  67                     return;
  68                 }
  69                 if (success instanceof Throwable) { // Error sended by master
  70                     settableFuture.setException((Throwable) success);
  71                     return;
  72                 }
  73                 if (success instanceof EmptyReadResponse) {
  74                     settableFuture.set(Optional.absent());
  75                     return;
  76                 }
  77                 if (success instanceof NormalizedNodeMessage) {
  78                     final NormalizedNodeMessage data = (NormalizedNodeMessage) success;
  79                     settableFuture.set(Optional.of(data.getNode()));
  80                 }
  81             }
  82         }, actorSystem.dispatcher());
  83         return Futures.makeChecked(settableFuture, ReadFailedException.MAPPER);
  84     }
  85
  86     public CheckedFuture<Boolean, ReadFailedException> exists(final LogicalDatastoreType store,
  87                                                               final YangInstanceIdentifier path) {
  88         final Future<Object> existsScalaFuture =
  89                 Patterns.ask(masterTxActor, new ExistsRequest(store, path), askTimeout);
  90
  91         LOG.trace("{}: Exists {} via NETCONF: {}", id, store, path);
  92
  93         final SettableFuture<Boolean> settableFuture = SettableFuture.create();
  94         existsScalaFuture.onComplete(new OnComplete<Object>() {
  95             @Override
  96             public void onComplete(final Throwable failure, final Object success) throws Throwable {
  97                 if (failure != null) { // ask timeout
  98                     final Exception exception = NetconfTopologyUtils.createMasterIsDownException(id);
  99                     settableFuture.setException(exception);
 100                     return;
 101                 }
 102                 if (success instanceof Throwable) {
 103                     settableFuture.setException((Throwable) success);
 104                     return;
 105                 }
 106                 settableFuture.set((Boolean) success);
 107             }
 108         }, actorSystem.dispatcher());
 109         return Futures.makeChecked(settableFuture, ReadFailedException.MAPPER);
 110     }
 111
 112 }