binding2/mdsal-binding2-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/javav2/dom/adapter/impl/data/tree/BindingDOMDataTreeCommitCohortAdapter.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.impl.data.tree;
   9
  10 import com.google.common.annotations.Beta;
  11 import com.google.common.base.Preconditions;
  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 java.util.ArrayList;
  17 import java.util.List;
  18 import java.util.function.BiConsumer;
  19 import javax.annotation.Nonnull;
  20 import org.opendaylight.mdsal.binding.javav2.api.DataTreeCommitCohort;
  21 import org.opendaylight.mdsal.binding.javav2.api.DataTreeModification;
  22 import org.opendaylight.mdsal.binding.javav2.dom.codec.impl.BindingToNormalizedNodeCodec;
  23 import org.opendaylight.mdsal.binding.javav2.dom.codec.modification.LazyDataTreeModification;
  24 import org.opendaylight.mdsal.binding.javav2.spec.base.TreeNode;
  25 import org.opendaylight.mdsal.common.api.DataValidationFailedException;
  26 import org.opendaylight.mdsal.common.api.MappingCheckedFuture;
  27 import org.opendaylight.mdsal.common.api.PostCanCommitStep;
  28 import org.opendaylight.mdsal.dom.api.DOMDataTreeCandidate;
  29 import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohort;
  30 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  31
  32 /**
  33  * Data tree commit cohort adapter.
  34  *
  35  * @param <T>
  36  *            - {@link TreeNode} type
  37  */
  38 @Beta
  39 public class BindingDOMDataTreeCommitCohortAdapter<T extends TreeNode> implements DOMDataTreeCommitCohort {
  40
  41     private final BindingToNormalizedNodeCodec codec;
  42     private final DataTreeCommitCohort<T> cohort;
  43
  44     public BindingDOMDataTreeCommitCohortAdapter(final BindingToNormalizedNodeCodec codec,
  45             final DataTreeCommitCohort<T> cohort) {
  46         this.codec = Preconditions.checkNotNull(codec);
  47         this.cohort = Preconditions.checkNotNull(cohort);
  48     }
  49
  50     @Nonnull
  51     @Override
  52     public CheckedFuture<PostCanCommitStep, DataValidationFailedException> canCommit(@Nonnull final Object txId,
  53             @Nonnull final DOMDataTreeCandidate candidate, @Nonnull final SchemaContext ctx) {
  54         final DataTreeModification<T> modification = LazyDataTreeModification.create(codec, candidate);
  55         final List<CheckedFuture<PostCanCommitStep, DataValidationFailedException>> futures = new ArrayList<>();
  56         final BiConsumer<DataValidationFailedException, PostCanCommitStep> biConsumer = (ex, cc) -> {
  57             final ListenableFuture<PostCanCommitStep> immediateFuture = Futures.immediateFuture(cc);
  58             futures.add(MappingCheckedFuture.create(immediateFuture,
  59                             new DataValidationFailedExceptionMapper("canCommit", candidate.getRootPath())));
  60         };
  61         final ListenableFuture<PostCanCommitStep> resultFuture =
  62                 Futures.transform(Futures.allAsList(futures), input -> input.get(input.size() - 1),
  63                         MoreExecutors.directExecutor());
  64         cohort.canCommit(txId, modification, biConsumer);
  65         return MappingCheckedFuture.create(resultFuture,
  66                 new DataValidationFailedExceptionMapper("canCommit", candidate.getRootPath()));
  67     }
  68 }
  69