--- /dev/null
+/*
+ * Copyright (c) 2015 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;
+
+import com.google.common.base.Preconditions;
+import com.google.common.io.ByteArrayDataInput;
+import com.google.common.io.ByteArrayDataOutput;
+import com.google.common.io.ByteStreams;
+import com.google.protobuf.GeneratedMessage.GeneratedExtension;
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.Externalizable;
+import java.io.IOException;
+import java.io.ObjectInput;
+import java.io.ObjectOutput;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.Map;
+import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeInputStreamReader;
+import org.opendaylight.controller.cluster.datastore.node.utils.stream.NormalizedNodeOutputStreamWriter;
+import org.opendaylight.controller.cluster.raft.protobuff.client.messages.Payload;
+import org.opendaylight.controller.protobuff.messages.cluster.raft.AppendEntriesMessages.AppendEntries;
+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.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+final class DataTreeCandidatePayload extends Payload implements Externalizable {
+ private static final Logger LOG = LoggerFactory.getLogger(DataTreeCandidatePayload.class);
+ private static final long serialVersionUID = 1L;
+ 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 transient byte[] serialized;
+
+ public DataTreeCandidatePayload() {
+ // Required by Externalizable
+ }
+
+ private DataTreeCandidatePayload(final byte[] serialized) {
+ this.serialized = Preconditions.checkNotNull(serialized);
+ }
+
+ private static void writeChildren(final NormalizedNodeOutputStreamWriter writer, final DataOutput out,
+ final Collection<DataTreeCandidateNode> children) throws IOException {
+ out.writeInt(children.size());
+ for (DataTreeCandidateNode child : children) {
+ writeNode(writer, out, child);
+ }
+ }
+
+ private static void writeNode(final NormalizedNodeOutputStreamWriter writer, final DataOutput out,
+ final DataTreeCandidateNode node) throws IOException {
+ switch (node.getModificationType()) {
+ case DELETE:
+ out.writeByte(DELETE);
+ writer.writePathArgument(node.getIdentifier());
+ break;
+ case SUBTREE_MODIFIED:
+ out.writeByte(SUBTREE_MODIFIED);
+ writer.writePathArgument(node.getIdentifier());
+ writeChildren(writer, out, node.getChildNodes());
+ break;
+ case WRITE:
+ out.writeByte(WRITE);
+ writer.writeNormalizedNode(node.getDataAfter().get());
+ break;
+ case UNMODIFIED:
+ throw new IllegalArgumentException("Unmodified candidate should never be in the payload");
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + node.getModificationType());
+ }
+ }
+
+ static DataTreeCandidatePayload create(DataTreeCandidate candidate) {
+ final ByteArrayDataOutput out = ByteStreams.newDataOutput();
+ try (final NormalizedNodeOutputStreamWriter writer = new NormalizedNodeOutputStreamWriter(out)) {
+ writer.writeYangInstanceIdentifier(candidate.getRootPath());
+
+ final DataTreeCandidateNode node = candidate.getRootNode();
+ switch (node.getModificationType()) {
+ case DELETE:
+ out.writeByte(DELETE);
+ break;
+ case SUBTREE_MODIFIED:
+ out.writeByte(SUBTREE_MODIFIED);
+ writeChildren(writer, out, node.getChildNodes());
+ break;
+ case UNMODIFIED:
+ out.writeByte(UNMODIFIED);
+ break;
+ case WRITE:
+ out.writeByte(WRITE);
+ writer.writeNormalizedNode(node.getDataAfter().get());
+ break;
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + node.getModificationType());
+ }
+
+ writer.close();
+ } catch (IOException e) {
+ throw new IllegalArgumentException(String.format("Failed to serialize candidate %s", candidate), e);
+ }
+
+ return new DataTreeCandidatePayload(out.toByteArray());
+ }
+
+ private static Collection<DataTreeCandidateNode> readChildren(final NormalizedNodeInputStreamReader reader,
+ final DataInput 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(reader, in);
+ if (child != null) {
+ ret.add(child);
+ }
+ }
+ return ret;
+ } else {
+ return Collections.emptyList();
+ }
+ }
+
+ private static DataTreeCandidateNode readNode(final NormalizedNodeInputStreamReader reader,
+ final DataInput in) throws IOException {
+ final byte type = in.readByte();
+ switch (type) {
+ case DELETE:
+ return DeletedDataTreeCandidateNode.create(reader.readPathArgument());
+ case SUBTREE_MODIFIED:
+ final PathArgument identifier = reader.readPathArgument();
+ final Collection<DataTreeCandidateNode> children = readChildren(reader, in);
+ if (children.isEmpty()) {
+ LOG.debug("Modified node {} does not have any children, not instantiating it", identifier);
+ return null;
+ } else {
+ return ModifiedDataTreeCandidateNode.create(identifier, children);
+ }
+ case UNMODIFIED:
+ return null;
+ case WRITE:
+ return DataTreeCandidateNodes.fromNormalizedNode(reader.readNormalizedNode());
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + type);
+ }
+ }
+
+ private static DataTreeCandidate parseCandidate(final ByteArrayDataInput in) throws IOException {
+ final NormalizedNodeInputStreamReader reader = new NormalizedNodeInputStreamReader(in);
+ final YangInstanceIdentifier rootPath = reader.readYangInstanceIdentifier();
+ final byte type = in.readByte();
+
+ final DataTreeCandidateNode rootNode;
+ switch (type) {
+ case DELETE:
+ rootNode = DeletedDataTreeCandidateNode.create();
+ break;
+ case SUBTREE_MODIFIED:
+ rootNode = ModifiedDataTreeCandidateNode.create(readChildren(reader, in));
+ break;
+ case WRITE:
+ rootNode = DataTreeCandidateNodes.fromNormalizedNode(reader.readNormalizedNode());
+ break;
+ default:
+ throw new IllegalArgumentException("Unhandled node type " + type);
+ }
+
+ return DataTreeCandidates.newDataTreeCandidate(rootPath, rootNode);
+ }
+
+ DataTreeCandidate getCandidate() throws IOException {
+ return parseCandidate(ByteStreams.newDataInput(serialized));
+ }
+
+ @Override
+ @Deprecated
+ @SuppressWarnings("rawtypes")
+ public <T> Map<GeneratedExtension, T> encode() {
+ return null;
+ }
+
+ @Override
+ @Deprecated
+ public Payload decode(final AppendEntries.ReplicatedLogEntry.Payload payload) {
+ return null;
+ }
+
+ @Override
+ public int size() {
+ return serialized.length;
+ }
+
+ @Override
+ public void writeExternal(ObjectOutput out) throws IOException {
+ out.writeByte((byte)serialVersionUID);
+ out.writeInt(serialized.length);
+ out.write(serialized);
+ }
+
+ @Override
+ public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
+ final long version = in.readByte();
+ Preconditions.checkArgument(version == serialVersionUID, "Unsupported serialization version %s", version);
+
+ final int length = in.readInt();
+ serialized = new byte[length];
+ in.readFully(serialized);
+ }
+}
Code Review / controller.git / blobdiff