+++ /dev/null
-/*
- * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Public License v1.0 which accompanies this distribution,
- * and is available at http://www.eclipse.org/legal/epl-v10.html
- */
-package org.opendaylight.controller.md.sal.dom.store.impl.tree.data;
-
-import static com.google.common.base.Preconditions.checkArgument;
-
-import java.util.List;
-
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.ConflictingModificationAppliedException;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.DataValidationFailedException;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.IncorrectDataStructureException;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.ModificationType;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.DataNodeContainerModificationStrategy.ContainerModificationStrategy;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.DataNodeContainerModificationStrategy.UnkeyedListItemModificationStrategy;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.NormalizedNodeContainerModificationStrategy.ChoiceModificationStrategy;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.NormalizedNodeContainerModificationStrategy.OrderedLeafSetModificationStrategy;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.NormalizedNodeContainerModificationStrategy.OrderedMapModificationStrategy;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.NormalizedNodeContainerModificationStrategy.UnorderedLeafSetModificationStrategy;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.data.ValueNodeModificationStrategy.LeafModificationStrategy;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.spi.TreeNode;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.spi.TreeNodeFactory;
-import org.opendaylight.controller.md.sal.dom.store.impl.tree.spi.Version;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.AugmentationIdentifier;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.NodeIdentifier;
-import org.opendaylight.yangtools.yang.data.api.InstanceIdentifier.PathArgument;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
-import org.opendaylight.yangtools.yang.model.api.AugmentationSchema;
-import org.opendaylight.yangtools.yang.model.api.AugmentationTarget;
-import org.opendaylight.yangtools.yang.model.api.ChoiceNode;
-import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
-import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.LeafListSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.LeafSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.google.common.base.Optional;
-import com.google.common.base.Preconditions;
-
-abstract class SchemaAwareApplyOperation implements ModificationApplyOperation {
- private static final Logger LOG = LoggerFactory.getLogger(SchemaAwareApplyOperation.class);
-
- public static SchemaAwareApplyOperation from(final DataSchemaNode schemaNode) {
- if (schemaNode instanceof ContainerSchemaNode) {
- return new ContainerModificationStrategy((ContainerSchemaNode) schemaNode);
- } else if (schemaNode instanceof ListSchemaNode) {
- return fromListSchemaNode((ListSchemaNode) schemaNode);
- } else if (schemaNode instanceof ChoiceNode) {
- return new ChoiceModificationStrategy((ChoiceNode) schemaNode);
- } else if (schemaNode instanceof LeafListSchemaNode) {
- return fromLeafListSchemaNode((LeafListSchemaNode) schemaNode);
- } else if (schemaNode instanceof LeafSchemaNode) {
- return new LeafModificationStrategy((LeafSchemaNode) schemaNode);
- }
- throw new IllegalArgumentException("Not supported schema node type for " + schemaNode.getClass());
- }
-
- public static SchemaAwareApplyOperation from(final DataNodeContainer resolvedTree,
- final AugmentationTarget augSchemas, final AugmentationIdentifier identifier) {
- AugmentationSchema augSchema = null;
-
- allAugments:
- for (AugmentationSchema potential : augSchemas.getAvailableAugmentations()) {
- for (DataSchemaNode child : potential.getChildNodes()) {
- if (identifier.getPossibleChildNames().contains(child.getQName())) {
- augSchema = potential;
- break allAugments;
- }
- }
- }
-
- if (augSchema != null) {
- return new DataNodeContainerModificationStrategy.AugmentationModificationStrategy(augSchema, resolvedTree);
- }
- return null;
- }
-
- public static boolean checkConflicting(final InstanceIdentifier path, final boolean condition, final String message) throws ConflictingModificationAppliedException {
- if(!condition) {
- throw new ConflictingModificationAppliedException(path, message);
- }
- return condition;
- }
-
- private static SchemaAwareApplyOperation fromListSchemaNode(final ListSchemaNode schemaNode) {
- List<QName> keyDefinition = schemaNode.getKeyDefinition();
- if (keyDefinition == null || keyDefinition.isEmpty()) {
- return new UnkeyedListModificationStrategy(schemaNode);
- }
- if (schemaNode.isUserOrdered()) {
- return new OrderedMapModificationStrategy(schemaNode);
- }
-
- return new NormalizedNodeContainerModificationStrategy.UnorderedMapModificationStrategy(schemaNode);
- }
-
- private static SchemaAwareApplyOperation fromLeafListSchemaNode(final LeafListSchemaNode schemaNode) {
- if(schemaNode.isUserOrdered()) {
- return new OrderedLeafSetModificationStrategy(schemaNode);
- } else {
- return new UnorderedLeafSetModificationStrategy(schemaNode);
- }
- }
-
- private static final void checkNotConflicting(final InstanceIdentifier path, final TreeNode original, final TreeNode current) throws ConflictingModificationAppliedException {
- checkConflicting(path, original.getVersion().equals(current.getVersion()),
- "Node was replaced by other transaction.");
- checkConflicting(path, original.getSubtreeVersion().equals(current.getSubtreeVersion()),
- "Node children was modified by other transaction");
- }
-
- protected final ModificationApplyOperation resolveChildOperation(final PathArgument child) {
- Optional<ModificationApplyOperation> potential = getChild(child);
- checkArgument(potential.isPresent(), "Operation for child %s is not defined.", child);
- return potential.get();
- }
-
- @Override
- public void verifyStructure(final ModifiedNode modification) throws IllegalArgumentException {
- if (modification.getType() == ModificationType.WRITE) {
- verifyWrittenStructure(modification.getWrittenValue());
- }
- }
-
- @Override
- public final void checkApplicable(final InstanceIdentifier path,final NodeModification modification, final Optional<TreeNode> current) throws DataValidationFailedException {
- switch (modification.getType()) {
- case DELETE:
- checkDeleteApplicable(modification, current);
- case SUBTREE_MODIFIED:
- checkSubtreeModificationApplicable(path, modification, current);
- return;
- case WRITE:
- checkWriteApplicable(path, modification, current);
- return;
- case MERGE:
- checkMergeApplicable(path, modification, current);
- return;
- case UNMODIFIED:
- return;
- default:
- throw new UnsupportedOperationException("Suplied modification type "+ modification.getType()+ "is not supported.");
- }
-
- }
-
- protected void checkMergeApplicable(final InstanceIdentifier path, final NodeModification modification, final Optional<TreeNode> current) throws DataValidationFailedException {
- Optional<TreeNode> original = modification.getOriginal();
- if (original.isPresent() && current.isPresent()) {
- /*
- * We need to do conflict detection only and only if the value of leaf changed
- * before two transactions. If value of leaf is unchanged between two transactions
- * it should not cause transaction to fail, since result of this merge
- * leads to same data.
- */
- if(!original.get().getData().equals(current.get().getData())) {
- checkNotConflicting(path, original.get(), current.get());
- }
- }
- }
-
- protected void checkWriteApplicable(final InstanceIdentifier path, final NodeModification modification, final Optional<TreeNode> current) throws DataValidationFailedException {
- Optional<TreeNode> original = modification.getOriginal();
- if (original.isPresent() && current.isPresent()) {
- checkNotConflicting(path, original.get(), current.get());
- } else if(original.isPresent()) {
- throw new ConflictingModificationAppliedException(path,"Node was deleted by other transaction.");
- }
- }
-
- private void checkDeleteApplicable(final NodeModification modification, final Optional<TreeNode> current) {
- // Delete is always applicable, we do not expose it to subclasses
- if (current.isPresent()) {
- LOG.trace("Delete operation turned to no-op on missing node {}", modification);
- }
- }
-
- @Override
- public final Optional<TreeNode> apply(final ModifiedNode modification,
- final Optional<TreeNode> currentMeta, final Version version) {
-
- switch (modification.getType()) {
- case DELETE:
- return modification.storeSnapshot(Optional.<TreeNode> absent());
- case SUBTREE_MODIFIED:
- Preconditions.checkArgument(currentMeta.isPresent(), "Metadata not available for modification",
- modification);
- return modification.storeSnapshot(Optional.of(applySubtreeChange(modification, currentMeta.get(),
- version)));
- case MERGE:
- if(currentMeta.isPresent()) {
- return modification.storeSnapshot(Optional.of(applyMerge(modification,currentMeta.get(), version)));
- } // Fallback to write is intentional - if node is not preexisting merge is same as write
- case WRITE:
- return modification.storeSnapshot(Optional.of(applyWrite(modification, currentMeta, version)));
- case UNMODIFIED:
- return currentMeta;
- default:
- throw new IllegalArgumentException("Provided modification type is not supported.");
- }
- }
-
- protected abstract TreeNode applyMerge(ModifiedNode modification,
- TreeNode currentMeta, Version version);
-
- protected abstract TreeNode applyWrite(ModifiedNode modification,
- Optional<TreeNode> currentMeta, Version version);
-
- protected abstract TreeNode applySubtreeChange(ModifiedNode modification,
- TreeNode currentMeta, Version version);
-
- /**
- *
- * Checks is supplied {@link NodeModification} is applicable for Subtree Modification.
- *
- * @param path Path to current node
- * @param modification Node modification which should be applied.
- * @param current Current state of data tree
- * @throws ConflictingModificationAppliedException If subtree was changed in conflicting way
- * @throws IncorrectDataStructureException If subtree modification is not applicable (e.g. leaf node).
- */
- protected abstract void checkSubtreeModificationApplicable(InstanceIdentifier path, final NodeModification modification,
- final Optional<TreeNode> current) throws DataValidationFailedException;
-
- protected abstract void verifyWrittenStructure(NormalizedNode<?, ?> writtenValue);
-
- public static class UnkeyedListModificationStrategy extends SchemaAwareApplyOperation {
-
- private final Optional<ModificationApplyOperation> entryStrategy;
-
- protected UnkeyedListModificationStrategy(final ListSchemaNode schema) {
- entryStrategy = Optional.<ModificationApplyOperation> of(new UnkeyedListItemModificationStrategy(schema));
- }
-
- @Override
- protected TreeNode applyMerge(final ModifiedNode modification, final TreeNode currentMeta,
- final Version version) {
- return applyWrite(modification, Optional.of(currentMeta), version);
- }
-
- @Override
- protected TreeNode applySubtreeChange(final ModifiedNode modification,
- final TreeNode currentMeta, final Version version) {
- throw new UnsupportedOperationException("UnkeyedList does not support subtree change.");
- }
-
- @Override
- protected TreeNode applyWrite(final ModifiedNode modification,
- final Optional<TreeNode> currentMeta, final Version version) {
- return TreeNodeFactory.createTreeNode(modification.getWrittenValue(), version);
- }
-
- @Override
- public Optional<ModificationApplyOperation> getChild(final PathArgument child) {
- if (child instanceof NodeIdentifier) {
- return entryStrategy;
- }
- return Optional.absent();
- }
-
- @Override
- protected void verifyWrittenStructure(final NormalizedNode<?, ?> writtenValue) {
-
- }
-
- @Override
- protected void checkSubtreeModificationApplicable(final InstanceIdentifier path, final NodeModification modification,
- final Optional<TreeNode> current) throws IncorrectDataStructureException {
- throw new IncorrectDataStructureException(path, "Subtree modification is not allowed.");
- }
- }
-}
Code Review / controller.git / blobdiff