--- /dev/null
+/*
+ * Copyright (c) 2016 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.cluster.datastore.persisted;
+
+import com.google.common.annotations.Beta;
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeDataInput;
+import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeDataOutput;
+import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeInputOutput;
+import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeInputStreamReader;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNode;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidateNodes;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidates;
+import org.opendaylight.yangtools.yang.data.api.schema.tree.ModificationType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Utility serialization/deserialization for {@link DataTreeCandidate}. Note that this utility does not maintain
+ * before-image information across serialization.
+ *
+ * @author Robert Varga
+ */
+@Beta
+public final class DataTreeCandidateInputOutput {
+ private static final Logger LOG = LoggerFactory.getLogger(DataTreeCandidateInputOutput.class);
+ private static final byte DELETE = 0;
+ private static final byte SUBTREE_MODIFIED = 1;
+ private static final byte UNMODIFIED = 2;
+ private static final byte WRITE = 3;
+ private static final byte APPEARED = 4;
+ private static final byte DISAPPEARED = 5;
+
+ private DataTreeCandidateInputOutput() {
+ throw new UnsupportedOperationException();
+ }
+
+ private static DataTreeCandidateNode readModifiedNode(final ModificationType type,
+ final NormalizedNodeDataInput in) throws IOException {
+
+ final PathArgument identifier = in.readPathArgument();
+ final Collection<DataTreeCandidateNode> children = readChildren(in);
+ if (children.isEmpty()) {
+ LOG.debug("Modified node {} does not have any children, not instantiating it", identifier);
+ return null;
+ } else {
+ return ModifiedDataTreeCandidateNode.create(identifier, type, children);
+ }
+ }
+
+ private static Collection<DataTreeCandidateNode> readChildren(final NormalizedNodeDataInput in) throws IOException {
+ final int size = in.readInt();
+ if (size != 0) {
+ final Collection<DataTreeCandidateNode> ret = new ArrayList<>(size);
+ for (int i = 0; i < size; ++i) {
+ final DataTreeCandidateNode child = readNode(in);
+ if (child != null) {
+ ret.add(child);
+ }
+ }
+ return ret;
+ } else {
+ return Collections.emptyList();
+ }
+ }
+
+ private static DataTreeCandidateNode readNode(final NormalizedNodeDataInput in) throws IOException {
+ final byte type = in.readByte();
+ switch (type) {
+ case APPEARED:
+ return readModifiedNode(ModificationType.APPEARED, in);
+ case DELETE:
+ return DeletedDataTreeCandidateNode.create(in.readPathArgument());
+ case DISAPPEARED:
+ return readModifiedNode(ModificationType.DISAPPEARED, in);
+ case SUBTREE_MODIFIED:
+ return readModifiedNode(ModificationType.SUBTREE_MODIFIED, in);
+ case UNMODIFIED:
+ return null;
+ case WRITE:
+ return DataTreeCandidateNodes.fromNormalizedNode(in.readNormalizedNode());
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + type);
+ }
+ }
+
+ public static DataTreeCandidate readDataTreeCandidate(final DataInput in) throws IOException {
+ final NormalizedNodeDataInput reader = new NormalizedNodeInputStreamReader(in);
+ final YangInstanceIdentifier rootPath = reader.readYangInstanceIdentifier();
+ final byte type = reader.readByte();
+
+ final DataTreeCandidateNode rootNode;
+ switch (type) {
+ case DELETE:
+ rootNode = DeletedDataTreeCandidateNode.create();
+ break;
+ case SUBTREE_MODIFIED:
+ rootNode = ModifiedDataTreeCandidateNode.create(readChildren(reader));
+ break;
+ case WRITE:
+ rootNode = DataTreeCandidateNodes.fromNormalizedNode(reader.readNormalizedNode());
+ break;
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + type);
+ }
+
+ return DataTreeCandidates.newDataTreeCandidate(rootPath, rootNode);
+ }
+
+
+ private static void writeChildren(final NormalizedNodeDataOutput out,
+ final Collection<DataTreeCandidateNode> children) throws IOException {
+ out.writeInt(children.size());
+ for (DataTreeCandidateNode child : children) {
+ writeNode(out, child);
+ }
+ }
+
+ private static void writeNode(final NormalizedNodeDataOutput out, final DataTreeCandidateNode node)
+ throws IOException {
+ switch (node.getModificationType()) {
+ case APPEARED:
+ out.writeByte(APPEARED);
+ out.writePathArgument(node.getIdentifier());
+ writeChildren(out, node.getChildNodes());
+ break;
+ case DELETE:
+ out.writeByte(DELETE);
+ out.writePathArgument(node.getIdentifier());
+ break;
+ case DISAPPEARED:
+ out.writeByte(DISAPPEARED);
+ out.writePathArgument(node.getIdentifier());
+ writeChildren(out, node.getChildNodes());
+ break;
+ case SUBTREE_MODIFIED:
+ out.writeByte(SUBTREE_MODIFIED);
+ out.writePathArgument(node.getIdentifier());
+ writeChildren(out, node.getChildNodes());
+ break;
+ case WRITE:
+ out.writeByte(WRITE);
+ out.writeNormalizedNode(node.getDataAfter().get());
+ break;
+ case UNMODIFIED:
+ out.writeByte(UNMODIFIED);
+ break;
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + node.getModificationType());
+ }
+ }
+
+ public static void writeDataTreeCandidate(final DataOutput out, DataTreeCandidate candidate) throws IOException {
+ try (final NormalizedNodeDataOutput writer = NormalizedNodeInputOutput.newDataOutput(out)) {
+ writer.writeYangInstanceIdentifier(candidate.getRootPath());
+
+ final DataTreeCandidateNode node = candidate.getRootNode();
+ switch (node.getModificationType()) {
+ case APPEARED:
+ writer.writeByte(APPEARED);
+ writeChildren(writer, node.getChildNodes());
+ break;
+ case DELETE:
+ writer.writeByte(DELETE);
+ break;
+ case DISAPPEARED:
+ writer.writeByte(DISAPPEARED);
+ writeChildren(writer, node.getChildNodes());
+ break;
+ case SUBTREE_MODIFIED:
+ writer.writeByte(SUBTREE_MODIFIED);
+ writeChildren(writer, node.getChildNodes());
+ break;
+ case UNMODIFIED:
+ writer.writeByte(UNMODIFIED);
+ break;
+ case WRITE:
+ writer.writeByte(WRITE);
+ writer.writeNormalizedNode(node.getDataAfter().get());
+ break;
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + node.getModificationType());
+ }
+ }
+ }
+}
Code Review / controller.git / blobdiff