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