/*******************************************************************************
* Copyright 2012-2014 by Aerospike.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
******************************************************************************/
package com.aerospike.client.async;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import com.aerospike.client.AerospikeException;
import com.aerospike.client.Key;
import com.aerospike.client.Record;
import com.aerospike.client.ResultCode;
import com.aerospike.client.command.Buffer;
import com.aerospike.client.command.Command;
import com.aerospike.client.listener.RecordListener;
import com.aerospike.client.policy.Policy;
import com.aerospike.client.util.ThreadLocalData;
public class AsyncRead extends AsyncSingleCommand {
private final Policy policy;
private final RecordListener listener;
private final String[] binNames;
private Record record;
public AsyncRead(AsyncCluster cluster, Policy policy, RecordListener listener, Key key, String[] binNames) {
super(cluster, key);
this.policy = (policy == null) ? new Policy() : policy;
this.listener = listener;
this.binNames = binNames;
}
@Override
protected Policy getPolicy() {
return policy;
}
@Override
protected void writeBuffer() throws AerospikeException {
setRead(key, binNames);
}
protected final void parseResult(ByteBuffer byteBuffer) throws AerospikeException {
dataBuffer = ThreadLocalData.getBuffer();
if (receiveSize > dataBuffer.length) {
dataBuffer = ThreadLocalData.resizeBuffer(receiveSize);
}
// Copy entire message to dataBuffer.
byteBuffer.position(0);
byteBuffer.get(dataBuffer, 0, receiveSize);
int resultCode = dataBuffer[5] & 0xFF;
int generation = Buffer.bytesToInt(dataBuffer, 6);
int expiration = Buffer.bytesToInt(dataBuffer, 10);
int fieldCount = Buffer.bytesToShort(dataBuffer, 18);
int opCount = Buffer.bytesToShort(dataBuffer, 20);
dataOffset = Command.MSG_REMAINING_HEADER_SIZE;
if (resultCode == 0) {
if (opCount == 0) {
// Bin data was not returned.
record = new Record(null, null, generation, expiration);
}
else {
record = parseRecord(opCount, fieldCount, generation, expiration);
}
}
else {
if (resultCode == ResultCode.KEY_NOT_FOUND_ERROR) {
record = null;
}
else {
throw new AerospikeException(resultCode);
}
}
}
private final Record parseRecord(
int opCount,
int fieldCount,
int generation,
int expiration
) throws AerospikeException {
Map<String,Object> bins = null;
ArrayList<Map<String, Object>> duplicates = null;
// There can be fields in the response (setname etc).
// But for now, ignore them. Expose them to the API if needed in the future.
if (fieldCount != 0) {
// Just skip over all the fields
for (int i = 0; i < fieldCount; i++) {
int fieldSize = Buffer.bytesToInt(dataBuffer, dataOffset);
dataOffset += 4 + fieldSize;
}
}
for (int i = 0 ; i < opCount; i++) {
int opSize = Buffer.bytesToInt(dataBuffer, dataOffset);
byte particleType = dataBuffer[dataOffset+5];
byte version = dataBuffer[dataOffset+6];
byte nameSize = dataBuffer[dataOffset+7];
String name = Buffer.utf8ToString(dataBuffer, dataOffset+8, nameSize);
dataOffset += 4 + 4 + nameSize;
int particleBytesSize = (int) (opSize - (4 + nameSize));
Object value = null;
value = Buffer.bytesToParticle(particleType, dataBuffer, dataOffset, particleBytesSize);
dataOffset += particleBytesSize;
Map<String,Object> vmap = null;
if (version > 0 || duplicates != null) {
if (duplicates == null) {
duplicates = new ArrayList<Map<String,Object>>(4);
duplicates.add(bins);
bins = null;
for (int j = 0; j < version; j++) {
duplicates.add(null);
}
}
else {
for (int j = duplicates.size(); j < version + 1; j++)
duplicates.add(null);
}
vmap = duplicates.get(version);
if (vmap == null) {
vmap = new HashMap<String,Object>();
duplicates.set(version, vmap);
}
}
else {
if (bins == null) {
bins = new HashMap<String,Object>();
}
vmap = bins;
}
vmap.put(name, value);
}
// Remove null duplicates just in case there were holes in the version number space.
if (duplicates != null) {
while (duplicates.remove(null)) {
;
}
}
return new Record(bins, duplicates, generation, expiration);
}
protected final void onSuccess() {
if (listener != null) {
listener.onSuccess(key, record);
}
}
protected final void onFailure(AerospikeException e) {
if (listener != null) {
listener.onFailure(e);
}
}
}