import com.google.common.base.Preconditions;
import com.google.common.collect.Iterables;
-import org.opendaylight.yangtools.yang.common.QName;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
+import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
+import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter;
+import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeWriter;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
* NormalizedNodeOutputStreamWriter will be used by distributed datastore to send normalized node in
*
*/
-public class NormalizedNodeOutputStreamWriter implements NormalizedNodeStreamWriter{
-
- private DataOutputStream writer;
+public class NormalizedNodeOutputStreamWriter implements NormalizedNodeStreamWriter {
private static final Logger LOG = LoggerFactory.getLogger(NormalizedNodeOutputStreamWriter.class);
- private Map<String, Integer> stringCodeMap = new HashMap<>();
+ static final byte SIGNATURE_MARKER = (byte) 0xab;
+ static final short CURRENT_VERSION = (short) 1;
+
+ static final byte IS_CODE_VALUE = 1;
+ static final byte IS_STRING_VALUE = 2;
+ static final byte IS_NULL_VALUE = 3;
+
+ private final DataOutput output;
+
+ private final Map<String, Integer> stringCodeMap = new HashMap<>();
+
+ private NormalizedNodeWriter normalizedNodeWriter;
+
+ private boolean wroteSignatureMarker;
public NormalizedNodeOutputStreamWriter(OutputStream stream) throws IOException {
Preconditions.checkNotNull(stream);
- writer = new DataOutputStream(stream);
+ output = new DataOutputStream(stream);
+ }
+
+ public NormalizedNodeOutputStreamWriter(DataOutput output) throws IOException {
+ this.output = Preconditions.checkNotNull(output);
+ }
+
+ private NormalizedNodeWriter normalizedNodeWriter() {
+ if(normalizedNodeWriter == null) {
+ normalizedNodeWriter = NormalizedNodeWriter.forStreamWriter(this);
+ }
+
+ return normalizedNodeWriter;
+ }
+
+ public void writeNormalizedNode(NormalizedNode<?, ?> node) throws IOException {
+ writeSignatureMarkerAndVersionIfNeeded();
+ normalizedNodeWriter().write(node);
+ }
+
+ private void writeSignatureMarkerAndVersionIfNeeded() throws IOException {
+ if(!wroteSignatureMarker) {
+ output.writeByte(SIGNATURE_MARKER);
+ output.writeShort(CURRENT_VERSION);
+ wroteSignatureMarker = true;
+ }
}
@Override
}
@Override
- public void leafSetEntryNode(YangInstanceIdentifier.NodeWithValue name, Object value) throws IOException, IllegalArgumentException {
- Preconditions.checkNotNull(name, "Node identifier should not be null");
-
+ public void leafSetEntryNode(Object value) throws IOException, IllegalArgumentException {
LOG.debug("Writing a new leaf set entry node");
- startNode(name.getNodeType(), NodeTypes.LEAF_SET_ENTRY_NODE);
+ output.writeByte(NodeTypes.LEAF_SET_ENTRY_NODE);
writeObject(value);
}
Preconditions.checkNotNull(identifier, "Node identifier should not be null");
LOG.debug("Starting a new augmentation node");
- writer.writeByte(NodeTypes.AUGMENTATION_NODE);
+ output.writeByte(NodeTypes.AUGMENTATION_NODE);
writeQNameSet(identifier.getPossibleChildNames());
}
public void endNode() throws IOException, IllegalStateException {
LOG.debug("Ending the node");
- writer.writeByte(NodeTypes.END_NODE);
+ output.writeByte(NodeTypes.END_NODE);
}
@Override
public void close() throws IOException {
- writer.close();
}
@Override
public void flush() throws IOException {
- writer.flush();
+ if (output instanceof OutputStream) {
+ ((OutputStream)output).flush();
+ }
}
private void startNode(final QName qName, byte nodeType) throws IOException {
Preconditions.checkNotNull(qName, "QName of node identifier should not be null.");
+
+ writeSignatureMarkerAndVersionIfNeeded();
+
// First write the type of node
- writer.writeByte(nodeType);
+ output.writeByte(nodeType);
// Write Start Tag
writeQName(qName);
}
private void writeCodedString(String key) throws IOException {
Integer value = stringCodeMap.get(key);
-
if(value != null) {
- writer.writeBoolean(true);
- writer.writeInt(value);
+ output.writeByte(IS_CODE_VALUE);
+ output.writeInt(value);
} else {
if(key != null) {
+ output.writeByte(IS_STRING_VALUE);
stringCodeMap.put(key, Integer.valueOf(stringCodeMap.size()));
+ output.writeUTF(key);
+ } else {
+ output.writeByte(IS_NULL_VALUE);
}
- writer.writeBoolean(false);
- writer.writeUTF(key);
}
}
- private void writeObjSet(Set set) throws IOException {
+ private void writeObjSet(Set<?> set) throws IOException {
if(!set.isEmpty()){
- writer.writeInt(set.size());
+ output.writeInt(set.size());
for(Object o : set){
if(o instanceof String){
writeCodedString(o.toString());
}
}
} else {
- writer.writeInt(0);
+ output.writeInt(0);
}
}
- private void writeYangInstanceIdentifier(YangInstanceIdentifier identifier) throws IOException {
+ public void writeYangInstanceIdentifier(YangInstanceIdentifier identifier) throws IOException {
+ writeSignatureMarkerAndVersionIfNeeded();
+ writeYangInstanceIdentifierInternal(identifier);
+ }
+
+ private void writeYangInstanceIdentifierInternal(YangInstanceIdentifier identifier) throws IOException {
Iterable<YangInstanceIdentifier.PathArgument> pathArguments = identifier.getPathArguments();
int size = Iterables.size(pathArguments);
- writer.writeInt(size);
+ output.writeInt(size);
for(YangInstanceIdentifier.PathArgument pathArgument : pathArguments) {
writePathArgument(pathArgument);
byte type = PathArgumentTypes.getSerializablePathArgumentType(pathArgument);
- writer.writeByte(type);
+ output.writeByte(type);
switch(type) {
case PathArgumentTypes.NODE_IDENTIFIER :
private void writeKeyValueMap(Map<QName, Object> keyValueMap) throws IOException {
if(keyValueMap != null && !keyValueMap.isEmpty()) {
- writer.writeInt(keyValueMap.size());
+ output.writeInt(keyValueMap.size());
Set<QName> qNameSet = keyValueMap.keySet();
for(QName qName : qNameSet) {
writeObject(keyValueMap.get(qName));
}
} else {
- writer.writeInt(0);
+ output.writeInt(0);
}
}
private void writeQNameSet(Set<QName> children) throws IOException {
// Write each child's qname separately, if list is empty send count as 0
if(children != null && !children.isEmpty()) {
- writer.writeInt(children.size());
+ output.writeInt(children.size());
for(QName qName : children) {
writeQName(qName);
}
} else {
LOG.debug("augmentation node does not have any child");
- writer.writeInt(0);
+ output.writeInt(0);
}
}
byte type = ValueTypes.getSerializableType(value);
// Write object type first
- writer.writeByte(type);
+ output.writeByte(type);
switch(type) {
case ValueTypes.BOOL_TYPE:
- writer.writeBoolean((Boolean) value);
+ output.writeBoolean((Boolean) value);
break;
case ValueTypes.QNAME_TYPE:
writeQName((QName) value);
break;
case ValueTypes.INT_TYPE:
- writer.writeInt((Integer) value);
+ output.writeInt((Integer) value);
break;
case ValueTypes.BYTE_TYPE:
- writer.writeByte((Byte) value);
+ output.writeByte((Byte) value);
break;
case ValueTypes.LONG_TYPE:
- writer.writeLong((Long) value);
+ output.writeLong((Long) value);
break;
case ValueTypes.SHORT_TYPE:
- writer.writeShort((Short) value);
+ output.writeShort((Short) value);
break;
case ValueTypes.BITS_TYPE:
- writeObjSet((Set) value);
+ writeObjSet((Set<?>) value);
+ break;
+ case ValueTypes.BINARY_TYPE:
+ byte[] bytes = (byte[]) value;
+ output.writeInt(bytes.length);
+ output.write(bytes);
break;
case ValueTypes.YANG_IDENTIFIER_TYPE:
- writeYangInstanceIdentifier((YangInstanceIdentifier) value);
+ writeYangInstanceIdentifierInternal((YangInstanceIdentifier) value);
+ break;
+ case ValueTypes.NULL_TYPE :
break;
default:
- writer.writeUTF(value.toString());
+ output.writeUTF(value.toString());
break;
}
}