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