netconf/netconf-topology-singleton/src/main/java/org/opendaylight/netconf/topology/singleton/impl/RemoteOperationTxProcessorImpl.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;
  10
  11 import akka.actor.ActorRef;
  12 import akka.actor.Status;
  13 import com.google.common.base.Optional;
  14 import com.google.common.util.concurrent.CheckedFuture;
  15 import com.google.common.util.concurrent.FutureCallback;
  16 import com.google.common.util.concurrent.Futures;
  17 import javax.annotation.Nonnull;
  18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  19 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  20 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
  21 import org.opendaylight.controller.md.sal.dom.api.DOMDataBroker;
  22 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  23 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
  24 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  25 import org.opendaylight.netconf.topology.singleton.api.RemoteOperationTxProcessor;
  26 import org.opendaylight.netconf.topology.singleton.messages.NormalizedNodeMessage;
  27 import org.opendaylight.netconf.topology.singleton.messages.transactions.EmptyReadResponse;
  28 import org.opendaylight.netconf.topology.singleton.messages.transactions.SubmitFailedReply;
  29 import org.opendaylight.netconf.topology.singleton.messages.transactions.SubmitReply;
  30 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  31 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 public class RemoteOperationTxProcessorImpl implements RemoteOperationTxProcessor, AutoCloseable {
  36
  37     private static final Logger LOG = LoggerFactory.getLogger(RemoteOperationTxProcessorImpl.class);
  38
  39     private final DOMDataBroker dataBroker;
  40     private final RemoteDeviceId id;
  41     private DOMDataWriteTransaction writeTx;
  42     private DOMDataReadOnlyTransaction readTx;
  43
  44     private ActorRef currentUser = null;
  45
  46     public RemoteOperationTxProcessorImpl(final DOMDataBroker dataBroker, final RemoteDeviceId id) {
  47         this.dataBroker = dataBroker;
  48         this.id = id;
  49         this.readTx = dataBroker.newReadOnlyTransaction();
  50     }
  51
  52     @Override
  53     public void doOpenTransaction(ActorRef recipient, ActorRef sender) {
  54         if (currentUser != null) {
  55             LOG.error("{}: Opening a new transaction for {} failed.", id, recipient);
  56             recipient.tell(new Status.Failure(
  57                     new IllegalStateException("Transaction is already opened for another user")), recipient);
  58             return;
  59         }
  60
  61         LOG.debug("{}: Opening a new transaction for {}", id, recipient);
  62         currentUser = recipient;
  63         recipient.tell(new Status.Success(null), sender);
  64     }
  65
  66     @Override
  67     public void doDelete(final LogicalDatastoreType store, final YangInstanceIdentifier path) {
  68         if (writeTx == null) {
  69             writeTx = dataBroker.newWriteOnlyTransaction();
  70         }
  71         writeTx.delete(store, path);
  72     }
  73
  74     @Override
  75     public void doSubmit(final ActorRef recipient, final ActorRef sender) {
  76         currentUser = null;
  77         if (writeTx != null) {
  78             CheckedFuture<Void, TransactionCommitFailedException> submitFuture = writeTx.submit();
  79             Futures.addCallback(submitFuture, new FutureCallback<Void>() {
  80                 @Override
  81                 public void onSuccess(Void result) {
  82                     recipient.tell(new SubmitReply(), sender);
  83                 }
  84
  85                 @Override
  86                 public void onFailure(@Nonnull Throwable throwable) {
  87                     recipient.tell(throwable, sender);
  88                 }
  89             });
  90         } else {
  91             recipient.tell(new SubmitFailedReply(), sender);
  92             LOG.warn("{}: Couldn't submit transaction because it was already closed.", id);
  93         }
  94     }
  95
  96     @Override
  97     public void doCancel(final ActorRef recipient, final ActorRef sender) {
  98         currentUser = null;
  99         boolean cancel = false;
 100         if (writeTx != null) {
 101             cancel = writeTx.cancel();
 102         }
 103         recipient.tell(cancel, sender);
 104
 105     }
 106
 107     @Override
 108     public void doPut(final LogicalDatastoreType store, final NormalizedNodeMessage data) {
 109         if (writeTx == null) {
 110             writeTx = dataBroker.newWriteOnlyTransaction();
 111         }
 112         writeTx.put(store, data.getIdentifier(), data.getNode());
 113     }
 114
 115     @Override
 116     public void doMerge(final LogicalDatastoreType store, final NormalizedNodeMessage data) {
 117         if (writeTx == null) {
 118             writeTx = dataBroker.newWriteOnlyTransaction();
 119         }
 120         writeTx.merge(store, data.getIdentifier(), data.getNode());
 121     }
 122
 123     @Override
 124     public void doRead(final LogicalDatastoreType store, final YangInstanceIdentifier path, final ActorRef recipient,
 125                        final ActorRef sender) {
 126         final CheckedFuture<Optional<NormalizedNode<?,?>>, ReadFailedException> readFuture =
 127                 readTx.read(store, path);
 128
 129         Futures.addCallback(readFuture, new FutureCallback<Optional<NormalizedNode<?, ?>>>() {
 130
 131             @Override
 132             public void onSuccess(final Optional<NormalizedNode<?, ?>> result) {
 133                 if (!result.isPresent()) {
 134                     recipient.tell(new EmptyReadResponse(), sender);
 135                     return;
 136                 }
 137                 recipient.tell(new NormalizedNodeMessage(path, result.get()), sender);
 138             }
 139
 140             @Override
 141             public void onFailure(@Nonnull final Throwable throwable) {
 142                 recipient.tell(throwable, sender);
 143             }
 144         });
 145     }
 146
 147     @Override
 148     public void doExists(final LogicalDatastoreType store, final YangInstanceIdentifier path, final ActorRef recipient,
 149                          final ActorRef sender) {
 150         final CheckedFuture<Boolean, ReadFailedException> readFuture =
 151                 readTx.exists(store, path);
 152         Futures.addCallback(readFuture, new FutureCallback<Boolean>() {
 153             @Override
 154             public void onSuccess(final Boolean result) {
 155                 if (result == null) {
 156                     recipient.tell(false, sender);
 157                 } else {
 158                     recipient.tell(result, sender);
 159                 }
 160             }
 161
 162             @Override
 163             public void onFailure(@Nonnull final Throwable throwable) {
 164                 recipient.tell(throwable, sender);
 165             }
 166         });
 167     }
 168
 169     @Override
 170     public void close() throws Exception {
 171         currentUser = null;
 172         if (readTx != null) {
 173             readTx.close();
 174         }
 175     }
 176 }