opendaylight/md-sal/sal-binding-broker/src/main/java/org/opendaylight/controller/md/sal/binding/impl/AbstractReadWriteTransaction.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.controller.md.sal.binding.impl;
   9
  10 import java.util.ArrayList;
  11 import java.util.Iterator;
  12 import java.util.List;
  13 import java.util.Map.Entry;
  14 import java.util.concurrent.ExecutionException;
  15
  16 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
  17 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizationException;
  18 import org.opendaylight.controller.md.sal.common.impl.util.compat.DataNormalizationOperation;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMDataReadWriteTransaction;
  20 import org.opendaylight.yangtools.yang.binding.DataObject;
  21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  22 import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
  23 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 import com.google.common.base.Optional;
  28
  29 public class AbstractReadWriteTransaction extends AbstractWriteTransaction<DOMDataReadWriteTransaction> {
  30
  31     private static final Logger LOG = LoggerFactory.getLogger(AbstractReadWriteTransaction.class);
  32
  33     public AbstractReadWriteTransaction(final DOMDataReadWriteTransaction delegate, final BindingToNormalizedNodeCodec codec) {
  34         super(delegate, codec);
  35     }
  36
  37     protected final void doPutWithEnsureParents(final LogicalDatastoreType store, final InstanceIdentifier<?> path, final DataObject data) {
  38         final Entry<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, NormalizedNode<?, ?>> normalized = getCodec()
  39                 .toNormalizedNode(path, data);
  40
  41         final org.opendaylight.yangtools.yang.data.api.InstanceIdentifier normalizedPath = normalized.getKey();
  42         ensureParentsByMerge(store, normalizedPath, path);
  43         LOG.debug("Tx: {} : Putting data {}", getDelegate().getIdentifier(), normalizedPath);
  44         doPut(store, path, data);
  45     }
  46
  47     protected final void doMergeWithEnsureParents(final LogicalDatastoreType store, final InstanceIdentifier<?> path, final DataObject data) {
  48         final Entry<org.opendaylight.yangtools.yang.data.api.InstanceIdentifier, NormalizedNode<?, ?>> normalized = getCodec()
  49                 .toNormalizedNode(path, data);
  50
  51         final org.opendaylight.yangtools.yang.data.api.InstanceIdentifier normalizedPath = normalized.getKey();
  52         ensureParentsByMerge(store, normalizedPath, path);
  53         LOG.debug("Tx: {} : Merge data {}", getDelegate().getIdentifier(), normalizedPath);
  54         doMerge(store, path, data);
  55     }
  56
  57     private final void ensureParentsByMerge(final LogicalDatastoreType store,
  58             final org.opendaylight.yangtools.yang.data.api.InstanceIdentifier normalizedPath,
  59             final InstanceIdentifier<?> path) {
  60         List<PathArgument> currentArguments = new ArrayList<>();
  61         DataNormalizationOperation<?> currentOp = getCodec().getDataNormalizer().getRootOperation();
  62         Iterator<PathArgument> iterator = normalizedPath.getPathArguments().iterator();
  63         while (iterator.hasNext()) {
  64             PathArgument currentArg = iterator.next();
  65             try {
  66                 currentOp = currentOp.getChild(currentArg);
  67             } catch (DataNormalizationException e) {
  68                 throw new IllegalArgumentException(String.format("Invalid child encountered in path %s", path), e);
  69             }
  70             currentArguments.add(currentArg);
  71             org.opendaylight.yangtools.yang.data.api.InstanceIdentifier currentPath = org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.create(
  72                     currentArguments);
  73
  74             final Optional<NormalizedNode<?, ?>> d;
  75             try {
  76                 d = getDelegate().read(store, currentPath).get();
  77             } catch (InterruptedException | ExecutionException e) {
  78                 LOG.error("Failed to read pre-existing data from store {} path {}", store, currentPath, e);
  79                 throw new IllegalStateException("Failed to read pre-existing data", e);
  80             }
  81
  82             if (!d.isPresent() && iterator.hasNext()) {
  83                 getDelegate().merge(store, currentPath, currentOp.createDefault(currentArg));
  84             }
  85         }
  86     }
  87
  88
  89 }