netconf/sal-netconf-connector/src/main/java/org/opendaylight/netconf/sal/connect/netconf/sal/tx/ReadOnlyTx.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
   9 package org.opendaylight.netconf.sal.connect.netconf.sal.tx;
  10
  11 import com.google.common.base.Optional;
  12 import com.google.common.util.concurrent.CheckedFuture;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import com.google.common.util.concurrent.MoreExecutors;
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.controller.md.sal.common.api.data.ReadFailedException;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadOnlyTransaction;
  19 import org.opendaylight.mdsal.common.api.MappingCheckedFuture;
  20 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfBaseOps;
  21 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfRpcFutureCallback;
  22 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  23 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  24 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28
  29 public final class ReadOnlyTx implements DOMDataReadOnlyTransaction {
  30
  31     private static final Logger LOG  = LoggerFactory.getLogger(ReadOnlyTx.class);
  32
  33     private final NetconfBaseOps netconfOps;
  34     private final RemoteDeviceId id;
  35
  36     public ReadOnlyTx(final NetconfBaseOps netconfOps, final RemoteDeviceId id) {
  37         this.netconfOps = netconfOps;
  38         this.id = id;
  39     }
  40
  41     private CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readConfigurationData(
  42             final YangInstanceIdentifier path) {
  43         final ListenableFuture<Optional<NormalizedNode<?, ?>>> configRunning = netconfOps.getConfigRunningData(
  44                 new NetconfRpcFutureCallback("Data read", id), Optional.fromNullable(path));
  45
  46         return MappingCheckedFuture.create(configRunning, ReadFailedException.MAPPER);
  47     }
  48
  49     private CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> readOperationalData(
  50             final YangInstanceIdentifier path) {
  51         final ListenableFuture<Optional<NormalizedNode<?, ?>>> configCandidate = netconfOps.getData(
  52                 new NetconfRpcFutureCallback("Data read", id), Optional.fromNullable(path));
  53
  54         return MappingCheckedFuture.create(configCandidate, ReadFailedException.MAPPER);
  55     }
  56
  57     @Override
  58     public void close() {
  59         // NOOP
  60     }
  61
  62     @Override
  63     public CheckedFuture<Optional<NormalizedNode<?, ?>>, ReadFailedException> read(
  64             final LogicalDatastoreType store, final YangInstanceIdentifier path) {
  65         switch (store) {
  66             case CONFIGURATION:
  67                 return readConfigurationData(path);
  68             case OPERATIONAL:
  69                 return readOperationalData(path);
  70             default:
  71                 LOG.info("Unknown datastore type: {}.", store);
  72                 throw new IllegalArgumentException(String.format(
  73                     "%s, Cannot read data %s for %s datastore, unknown datastore type", id, path, store));
  74         }
  75
  76     }
  77
  78     @Override
  79     public CheckedFuture<Boolean, ReadFailedException> exists(final LogicalDatastoreType store,
  80                                                               final YangInstanceIdentifier path) {
  81         final ListenableFuture<Boolean> result = Futures.transform(read(store, path),
  82             optionalNode -> optionalNode != null && optionalNode.isPresent(), MoreExecutors.directExecutor());
  83         return MappingCheckedFuture.create(result, ReadFailedException.MAPPER);
  84     }
  85
  86     @Override
  87     public Object getIdentifier() {
  88         return this;
  89     }
  90 }