binding2/mdsal-binding2-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/adapter/spi/AbstractForwardedTransaction.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies s.r.o. 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.mdsal.binding.javav2.dom.adapter.spi;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.base.Optional;
  12 import com.google.common.base.Preconditions;
  13 import com.google.common.util.concurrent.CheckedFuture;
  14 import com.google.common.util.concurrent.MoreExecutors;
  15 import javax.annotation.Nonnull;
  16 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingToNormalizedNodeCodec;
  17 import org.opendaylight.mdsal.binding.javav2.spec.base.InstanceIdentifier;
  18 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  19 import org.opendaylight.mdsal.common.api.AsyncTransaction;
  20 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
  21 import org.opendaylight.mdsal.common.api.MappingCheckedFuture;
  22 import org.opendaylight.mdsal.common.api.ReadFailedException;
  23 import org.opendaylight.mdsal.dom.api.DOMDataTreeReadTransaction;
  24 import org.opendaylight.yangtools.concepts.Delegator;
  25 import org.opendaylight.yangtools.concepts.Identifiable;
  26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  27 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  28
  29 /**
  30  * Abstract class for forwards transaction and codec for serialize/deserialize DOM and Binding data.
  31  *
  32  * @param <T>
  33  *            - type of asynchronous transaction
  34  */
  35 @Beta
  36 public abstract class AbstractForwardedTransaction<
  37         T extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>>
  38         implements Delegator<T>, Identifiable<Object> {
  39
  40     private final T delegate;
  41     private final BindingToNormalizedNodeCodec codec;
  42
  43     public AbstractForwardedTransaction(final T delegateTx, final BindingToNormalizedNodeCodec codec) {
  44         this.delegate = Preconditions.checkNotNull(delegateTx, "Delegate must not be null");
  45         this.codec = Preconditions.checkNotNull(codec, "Codec must not be null");
  46     }
  47
  48     @Nonnull
  49     @Override
  50     public final Object getIdentifier() {
  51         return delegate.getIdentifier();
  52     }
  53
  54     @Override
  55     public final T getDelegate() {
  56         return delegate;
  57     }
  58
  59     @SuppressWarnings("unchecked")
  60     protected final <S extends AsyncTransaction<YangInstanceIdentifier, NormalizedNode<?, ?>>> S
  61             getDelegateChecked(final Class<S> txType) {
  62         Preconditions.checkState(txType.isInstance(delegate));
  63         return (S) delegate;
  64     }
  65
  66     protected final BindingToNormalizedNodeCodec getCodec() {
  67         return codec;
  68     }
  69
  70     protected final <D extends TreeNode> CheckedFuture<Optional<D>, ReadFailedException> doRead(
  71             final DOMDataTreeReadTransaction readTx, final LogicalDatastoreType store,
  72             final InstanceIdentifier<D> path) {
  73         Preconditions.checkArgument(!path.isWildcarded(), "Invalid read of wildcarded path %s", path);
  74
  75         return MappingCheckedFuture.create(readTx.read(store, codec.toYangInstanceIdentifierBlocking(path))
  76             .transform(Optional::fromJavaUtil, MoreExecutors.directExecutor())
  77             .transform(codec.deserializeFunction(path), MoreExecutors.directExecutor()), ReadFailedException.MAPPER);
  78     }
  79 }