/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the License. You may obtain a
* copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.apache.geode.redis.internal.executor.sortedset;
import java.util.List;
import org.apache.geode.cache.Region;
import org.apache.geode.redis.internal.ByteArrayWrapper;
import org.apache.geode.redis.internal.Coder;
import org.apache.geode.redis.internal.Command;
import org.apache.geode.redis.internal.DoubleWrapper;
import org.apache.geode.redis.internal.ExecutionHandlerContext;
import org.apache.geode.redis.internal.RedisDataType;
import org.apache.geode.redis.internal.RedisConstants.ArityDef;
public class ZIncrByExecutor extends SortedSetExecutor {
private final String ERROR_NOT_NUMERIC = "The number provided is not numeric";
private final String ERROR_NAN = "This increment is illegal because it would result in a NaN";
@Override
public void executeCommand(Command command, ExecutionHandlerContext context) {
List<byte[]> commandElems = command.getProcessedCommand();
if (commandElems.size() != 4) {
command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(), ArityDef.ZINCRBY));
return;
}
ByteArrayWrapper key = command.getKey();
Region<ByteArrayWrapper, DoubleWrapper> keyRegion =
getOrCreateRegion(context, key, RedisDataType.REDIS_SORTEDSET);
ByteArrayWrapper member = new ByteArrayWrapper(commandElems.get(3));
double incr;
try {
byte[] incrArray = commandElems.get(2);
incr = Coder.bytesToDouble(incrArray);
} catch (NumberFormatException e) {
command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(), ERROR_NOT_NUMERIC));
return;
}
DoubleWrapper score = keyRegion.get(member);
if (score == null) {
keyRegion.put(member, new DoubleWrapper(incr));
command.setResponse(Coder.getBulkStringResponse(context.getByteBufAllocator(), incr));
return;
}
double result = score.score + incr;
if (Double.isNaN(result)) {
command.setResponse(Coder.getErrorResponse(context.getByteBufAllocator(), ERROR_NAN));
return;
}
score.score = result;
keyRegion.put(member, score);
command.setResponse(Coder.getBulkStringResponse(context.getByteBufAllocator(), score.score));
}
}