*/
package org.opendaylight.yangtools.yang.data.impl.schema.tree;
+import static java.util.Objects.requireNonNull;
+
import com.google.common.base.MoreObjects;
-import com.google.common.base.Preconditions;
-import java.util.concurrent.atomic.AtomicReferenceFieldUpdater;
-import javax.annotation.Nonnull;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.VarHandle;
+import java.util.Optional;
import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifierWithPredicates;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.TipProducingDataTree;
-import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeConfiguration;
import org.opendaylight.yangtools.yang.data.api.schema.tree.spi.TreeNode;
import org.opendaylight.yangtools.yang.data.util.DataSchemaContextNode;
import org.opendaylight.yangtools.yang.data.util.DataSchemaContextTree;
-import org.opendaylight.yangtools.yang.model.api.ContainerSchemaNode;
+import org.opendaylight.yangtools.yang.model.api.ContainerLike;
import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
-import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
+import org.opendaylight.yangtools.yang.model.api.ListSchemaNode;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Read-only snapshot of the data tree.
*/
-final class InMemoryDataTree extends AbstractDataTreeTip implements TipProducingDataTree {
- private static final AtomicReferenceFieldUpdater<InMemoryDataTree, DataTreeState> STATE_UPDATER =
- AtomicReferenceFieldUpdater.newUpdater(InMemoryDataTree.class, DataTreeState.class, "state");
+final class InMemoryDataTree extends AbstractDataTreeTip implements DataTree {
+ private static final VarHandle STATE;
+
+ static {
+ try {
+ STATE = MethodHandles.lookup().findVarHandle(InMemoryDataTree.class, "state", DataTreeState.class);
+ } catch (NoSuchFieldException | IllegalAccessException e) {
+ throw new ExceptionInInitializerError(e);
+ }
+ }
+
private static final Logger LOG = LoggerFactory.getLogger(InMemoryDataTree.class);
- private final YangInstanceIdentifier rootPath;
- private final TreeType treeType;
+ private final DataTreeConfiguration treeConfig;
+ private final boolean maskMandatory;
/**
- * Current data store state generation.
+ * Current data store state generation. All accesses need to go through {@link #STATE}
*/
+ @SuppressWarnings("unused")
private volatile DataTreeState state;
- public InMemoryDataTree(final TreeNode rootNode, final TreeType treeType, final YangInstanceIdentifier rootPath, final SchemaContext schemaContext) {
- this.treeType = Preconditions.checkNotNull(treeType, "treeType");
- this.rootPath = Preconditions.checkNotNull(rootPath, "rootPath");
+ InMemoryDataTree(final TreeNode rootNode, final DataTreeConfiguration treeConfig,
+ final EffectiveModelContext schemaContext) {
+ this.treeConfig = requireNonNull(treeConfig, "treeConfig");
+ maskMandatory = true;
state = DataTreeState.createInitial(rootNode);
if (schemaContext != null) {
- setSchemaContext(schemaContext);
+ setEffectiveModelContext(schemaContext);
+ }
+ }
+
+ InMemoryDataTree(final TreeNode rootNode, final DataTreeConfiguration treeConfig,
+ final EffectiveModelContext schemaContext, final DataSchemaNode rootSchemaNode,
+ final boolean maskMandatory) {
+ this.treeConfig = requireNonNull(treeConfig, "treeConfig");
+ this.maskMandatory = maskMandatory;
+
+ state = DataTreeState.createInitial(rootNode).withSchemaContext(schemaContext, getOperation(rootSchemaNode));
+ }
+
+ private ModificationApplyOperation getOperation(final DataSchemaNode rootSchemaNode) {
+ if (rootSchemaNode instanceof ContainerLike && maskMandatory) {
+ return new ContainerModificationStrategy((ContainerLike) rootSchemaNode, treeConfig);
+ }
+ if (rootSchemaNode instanceof ListSchemaNode) {
+ final PathArgument arg = treeConfig.getRootPath().getLastPathArgument();
+ if (arg instanceof NodeIdentifierWithPredicates) {
+ return maskMandatory ? new MapEntryModificationStrategy((ListSchemaNode) rootSchemaNode, treeConfig)
+ : MapEntryModificationStrategy.of((ListSchemaNode) rootSchemaNode, treeConfig);
+ }
+ }
+
+ try {
+ return SchemaAwareApplyOperation.from(rootSchemaNode, treeConfig);
+ } catch (ExcludedDataSchemaNodeException e) {
+ throw new IllegalArgumentException("Root node does not belong current data tree", e);
}
}
+ @Override
+ public void setEffectiveModelContext(final EffectiveModelContext newModelContext) {
+ internalSetSchemaContext(newModelContext);
+ }
+
/*
* This method is synchronized to guard against user attempting to install
* multiple contexts. Otherwise it runs in a lock-free manner.
*/
- @Override
- public synchronized void setSchemaContext(final SchemaContext newSchemaContext) {
- Preconditions.checkNotNull(newSchemaContext);
+ private synchronized void internalSetSchemaContext(final EffectiveModelContext newSchemaContext) {
+ requireNonNull(newSchemaContext);
LOG.debug("Following schema contexts will be attempted {}", newSchemaContext);
final DataSchemaContextTree contextTree = DataSchemaContextTree.from(newSchemaContext);
- final DataSchemaContextNode<?> rootContextNode = contextTree.getChild(rootPath);
- if (rootContextNode == null) {
- LOG.debug("Could not find root {} in new schema context, not upgrading", rootPath);
+ final Optional<DataSchemaContextNode<?>> rootContextNode = contextTree.findChild(getRootPath());
+ if (!rootContextNode.isPresent()) {
+ LOG.warn("Could not find root {} in new schema context, not upgrading", getRootPath());
return;
}
- final DataSchemaNode rootSchemaNode = rootContextNode.getDataSchemaNode();
+ final DataSchemaNode rootSchemaNode = rootContextNode.get().getDataSchemaNode();
if (!(rootSchemaNode instanceof DataNodeContainer)) {
- LOG.warn("Root {} resolves to non-container type {}, not upgrading", rootPath, rootSchemaNode);
+ LOG.warn("Root {} resolves to non-container type {}, not upgrading", getRootPath(), rootSchemaNode);
return;
}
- final ModificationApplyOperation rootNode;
- if (rootSchemaNode instanceof ContainerSchemaNode) {
- // FIXME: real root needs to enfore presence, but that require pre-population
- rootNode = new ContainerModificationStrategy((ContainerSchemaNode) rootSchemaNode, treeType);
- } else {
- rootNode = SchemaAwareApplyOperation.from(rootSchemaNode, treeType);
- }
-
- DataTreeState currentState, newState;
+ final ModificationApplyOperation rootNode = getOperation(rootSchemaNode);
+ DataTreeState currentState;
+ DataTreeState newState;
do {
- currentState = state;
+ currentState = currentState();
newState = currentState.withSchemaContext(newSchemaContext, rootNode);
- } while (!STATE_UPDATER.compareAndSet(this, currentState, newState));
+ // TODO: can we lower this to compareAndSwapRelease?
+ } while (!STATE.compareAndSet(this, currentState, newState));
}
@Override
public InMemoryDataTreeSnapshot takeSnapshot() {
- return state.newSnapshot();
+ return currentState().newSnapshot();
}
@Override
if (candidate instanceof NoopDataTreeCandidate) {
return;
}
- Preconditions.checkArgument(candidate instanceof InMemoryDataTreeCandidate, "Invalid candidate class %s", candidate.getClass());
- final InMemoryDataTreeCandidate c = (InMemoryDataTreeCandidate)candidate;
+ if (!(candidate instanceof InMemoryDataTreeCandidate)) {
+ throw new IllegalArgumentException("Invalid candidate class " + candidate.getClass());
+ }
+ final InMemoryDataTreeCandidate c = (InMemoryDataTreeCandidate)candidate;
if (LOG.isTraceEnabled()) {
LOG.trace("Data Tree is {}", NormalizedNodes.toStringTree(c.getTipRoot().getData()));
}
final TreeNode newRoot = c.getTipRoot();
- DataTreeState currentState, newState;
+ DataTreeState currentState;
+ DataTreeState newState;
do {
- currentState = state;
+ currentState = currentState();
final TreeNode currentRoot = currentState.getRoot();
LOG.debug("Updating datastore from {} to {}", currentRoot, newRoot);
final TreeNode oldRoot = c.getBeforeRoot();
- Preconditions.checkState(oldRoot == currentRoot, "Store tree %s and candidate base %s differ.", currentRoot, oldRoot);
+ if (oldRoot != currentRoot) {
+ final String oldStr = simpleToString(oldRoot);
+ final String currentStr = simpleToString(currentRoot);
+ throw new IllegalStateException("Store tree " + currentStr + " and candidate base " + oldStr
+ + " differ.");
+ }
newState = currentState.withRoot(newRoot);
LOG.trace("Updated state from {} to {}", currentState, newState);
- } while (!STATE_UPDATER.compareAndSet(this, currentState, newState));
+ // TODO: can we lower this to compareAndSwapRelease?
+ } while (!STATE.compareAndSet(this, currentState, newState));
+ }
+
+ private static String simpleToString(final Object obj) {
+ return obj.getClass().getName() + "@" + Integer.toHexString(obj.hashCode());
+ }
+
+ private DataTreeState currentState() {
+ return (DataTreeState) STATE.getAcquire(this);
}
@Override
public YangInstanceIdentifier getRootPath() {
- return rootPath;
+ return treeConfig.getRootPath();
}
@Override
public String toString() {
- return MoreObjects.toStringHelper(this).
- add("object", super.toString()).
- add("rootPath", rootPath).
- add("state", state).
- toString();
+ return MoreObjects.toStringHelper(this)
+ .add("object", super.toString())
+ .add("config", treeConfig)
+ .add("state", currentState())
+ .toString();
}
@Override
- @Nonnull
protected TreeNode getTipRoot() {
- return state.getRoot();
+ return currentState().getRoot();
}
}
Code Review / yangtools.git / blobdiff