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

   1 /*
   2  * Copyright (c) 2018 Inocybe Technologies 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.netconf.topology.singleton.impl.tx;
   9
  10 import akka.actor.ActorRef;
  11 import akka.dispatch.OnComplete;
  12 import akka.pattern.AskTimeoutException;
  13 import akka.pattern.Patterns;
  14 import akka.util.Timeout;
  15 import com.google.common.util.concurrent.FluentFuture;
  16 import com.google.common.util.concurrent.SettableFuture;
  17 import java.util.Objects;
  18 import java.util.Optional;
  19 import org.opendaylight.mdsal.common.api.CommitInfo;
  20 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  21 import org.opendaylight.mdsal.common.api.ReadFailedException;
  22 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
  23 import org.opendaylight.netconf.sal.connect.api.RemoteDeviceId;
  24 import org.opendaylight.netconf.topology.singleton.impl.utils.NetconfTopologyUtils;
  25 import org.opendaylight.netconf.topology.singleton.messages.NormalizedNodeMessage;
  26 import org.opendaylight.netconf.topology.singleton.messages.transactions.CancelRequest;
  27 import org.opendaylight.netconf.topology.singleton.messages.transactions.DeleteRequest;
  28 import org.opendaylight.netconf.topology.singleton.messages.transactions.EmptyReadResponse;
  29 import org.opendaylight.netconf.topology.singleton.messages.transactions.ExistsRequest;
  30 import org.opendaylight.netconf.topology.singleton.messages.transactions.MergeRequest;
  31 import org.opendaylight.netconf.topology.singleton.messages.transactions.PutRequest;
  32 import org.opendaylight.netconf.topology.singleton.messages.transactions.ReadRequest;
  33 import org.opendaylight.netconf.topology.singleton.messages.transactions.SubmitRequest;
  34 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  35 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  36 import org.slf4j.Logger;
  37 import org.slf4j.LoggerFactory;
  38 import scala.concurrent.ExecutionContext;
  39 import scala.concurrent.Future;
  40
  41 /**
  42  * ProxyTransactionFacade implementation that interfaces with an actor.
  43  *
  44  * @author Thomas Pantelis
  45  */
  46 class ActorProxyTransactionFacade implements ProxyTransactionFacade {
  47     private static final Logger LOG = LoggerFactory.getLogger(ActorProxyTransactionFacade.class);
  48
  49     private final ActorRef masterTxActor;
  50     private final RemoteDeviceId id;
  51     private final ExecutionContext executionContext;
  52     private final Timeout askTimeout;
  53
  54     ActorProxyTransactionFacade(final ActorRef masterTxActor, final RemoteDeviceId id,
  55             final ExecutionContext executionContext, final Timeout askTimeout) {
  56         this.masterTxActor = Objects.requireNonNull(masterTxActor);
  57         this.id = Objects.requireNonNull(id);
  58         this.executionContext = Objects.requireNonNull(executionContext);
  59         this.askTimeout = Objects.requireNonNull(askTimeout);
  60     }
  61
  62     @Override
  63     public Object getIdentifier() {
  64         return id;
  65     }
  66
  67     @Override
  68     public boolean cancel() {
  69         LOG.debug("{}: Cancel via actor {}", id, masterTxActor);
  70
  71         final Future<Object> future = Patterns.ask(masterTxActor, new CancelRequest(), askTimeout);
  72
  73         future.onComplete(new OnComplete<>() {
  74             @Override
  75             public void onComplete(final Throwable failure, final Object response) {
  76                 if (failure != null) {
  77                     LOG.warn("{}: Cancel failed", id, failure);
  78                     return;
  79                 }
  80
  81                 LOG.debug("{}: Cancel succeeded", id);
  82             }
  83         }, executionContext);
  84
  85         return true;
  86     }
  87
  88     @Override
  89     public FluentFuture<Optional<NormalizedNode>> read(final LogicalDatastoreType store,
  90             final YangInstanceIdentifier path) {
  91         LOG.debug("{}: Read {} {} via actor {}", id, store, path, masterTxActor);
  92
  93         final Future<Object> future = Patterns.ask(masterTxActor, new ReadRequest(store, path), askTimeout);
  94
  95         final SettableFuture<Optional<NormalizedNode>> settableFuture = SettableFuture.create();
  96         future.onComplete(new OnComplete<>() {
  97             @Override
  98             public void onComplete(final Throwable failure, final Object response) {
  99                 if (failure != null) {
 100                     LOG.debug("{}: Read {} {} failed", id, store, path, failure);
 101
 102                     final Throwable processedFailure = processFailure(failure);
 103                     if (processedFailure instanceof ReadFailedException) {
 104                         settableFuture.setException(processedFailure);
 105                     } else {
 106                         settableFuture.setException(new ReadFailedException("Read of store " + store + " path " + path
 107                             + " failed", processedFailure));
 108                     }
 109                     return;
 110                 }
 111
 112                 LOG.debug("{}: Read {} {} succeeded: {}", id, store, path, response);
 113
 114                 if (response instanceof EmptyReadResponse) {
 115                     settableFuture.set(Optional.empty());
 116                     return;
 117                 }
 118
 119                 if (response instanceof NormalizedNodeMessage) {
 120                     final NormalizedNodeMessage data = (NormalizedNodeMessage) response;
 121                     settableFuture.set(Optional.of(data.getNode()));
 122                 }
 123             }
 124         }, executionContext);
 125
 126         return FluentFuture.from(settableFuture);
 127     }
 128
 129     @Override
 130     public FluentFuture<Boolean> exists(final LogicalDatastoreType store, final YangInstanceIdentifier path) {
 131         LOG.debug("{}: Exists {} {} via actor {}", id, store, path, masterTxActor);
 132
 133         final Future<Object> future = Patterns.ask(masterTxActor, new ExistsRequest(store, path), askTimeout);
 134
 135         final SettableFuture<Boolean> settableFuture = SettableFuture.create();
 136         future.onComplete(new OnComplete<>() {
 137             @Override
 138             public void onComplete(final Throwable failure, final Object response) {
 139                 if (failure != null) {
 140                     LOG.debug("{}: Exists {} {} failed", id, store, path, failure);
 141
 142                     final Throwable processedFailure = processFailure(failure);
 143                     if (processedFailure instanceof ReadFailedException) {
 144                         settableFuture.setException(processedFailure);
 145                     } else {
 146                         settableFuture.setException(new ReadFailedException("Exists of store " + store + " path " + path
 147                             + " failed", processedFailure));
 148                     }
 149                     return;
 150                 }
 151
 152                 LOG.debug("{}: Exists {} {} succeeded: {}", id, store, path, response);
 153
 154                 settableFuture.set((Boolean) response);
 155             }
 156         }, executionContext);
 157
 158         return FluentFuture.from(settableFuture);
 159     }
 160
 161     @Override
 162     public void delete(final LogicalDatastoreType store, final YangInstanceIdentifier path) {
 163         LOG.debug("{}: Delete {} {} via actor {}", id, store, path, masterTxActor);
 164         masterTxActor.tell(new DeleteRequest(store, path), ActorRef.noSender());
 165     }
 166
 167     @Override
 168     public void put(final LogicalDatastoreType store, final YangInstanceIdentifier path, final NormalizedNode data) {
 169         LOG.debug("{}: Put {} {} via actor {}", id, store, path, masterTxActor);
 170         masterTxActor.tell(new PutRequest(store, new NormalizedNodeMessage(path, data)), ActorRef.noSender());
 171     }
 172
 173     @Override
 174     public void merge(final LogicalDatastoreType store, final YangInstanceIdentifier path, final NormalizedNode data) {
 175         LOG.debug("{}: Merge {} {} via actor {}", id, store, path, masterTxActor);
 176         masterTxActor.tell(new MergeRequest(store, new NormalizedNodeMessage(path, data)), ActorRef.noSender());
 177     }
 178
 179     @Override
 180     public FluentFuture<? extends CommitInfo> commit() {
 181         LOG.debug("{}: Commit via actor {}", id, masterTxActor);
 182
 183         final Future<Object> future = Patterns.ask(masterTxActor, new SubmitRequest(), askTimeout);
 184
 185         final SettableFuture<CommitInfo> settableFuture = SettableFuture.create();
 186         future.onComplete(new OnComplete<>() {
 187             @Override
 188             public void onComplete(final Throwable failure, final Object response) {
 189                 if (failure != null) {
 190                     LOG.debug("{}: Commit failed", id, failure);
 191                     settableFuture.setException(newTransactionCommitFailedException(processFailure(failure)));
 192                     return;
 193                 }
 194
 195                 LOG.debug("{}: Commit succeeded", id);
 196
 197                 settableFuture.set(CommitInfo.empty());
 198             }
 199
 200             private TransactionCommitFailedException newTransactionCommitFailedException(final Throwable failure) {
 201                 return new TransactionCommitFailedException(String.format("%s: Commit of transaction failed",
 202                     getIdentifier()), failure);
 203             }
 204         }, executionContext);
 205
 206         return FluentFuture.from(settableFuture);
 207     }
 208
 209     private Throwable processFailure(final Throwable failure) {
 210         return failure instanceof AskTimeoutException
 211                 ? NetconfTopologyUtils.createMasterIsDownException(id, (Exception)failure) : failure;
 212     }
 213 }