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/*
* Copyright 2017-2018 the original author or authors.
*
* Licensed 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.springframework.data.redis.connection.lettuce;
import io.lettuce.core.api.sync.RedisSetCommands;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Set;
import org.springframework.data.redis.connection.ClusterSlotHashUtil;
import org.springframework.data.redis.connection.lettuce.LettuceClusterConnection.LettuceMultiKeyClusterCommandCallback;
import org.springframework.data.redis.connection.util.ByteArraySet;
import org.springframework.data.redis.util.ByteUtils;
import org.springframework.util.Assert;
/**
* @author Christoph Strobl
* @author Mark Paluch
* @since 2.0
*/
class LettuceClusterSetCommands extends LettuceSetCommands {
private final LettuceClusterConnection connection;
LettuceClusterSetCommands(LettuceClusterConnection connection) {
super(connection);
this.connection = connection;
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.lettuce.LettuceConnection#sMove(byte[], byte[], byte[])
*/
@Override
public Boolean sMove(byte[] srcKey, byte[] destKey, byte[] value) {
Assert.notNull(srcKey, "Source key must not be null!");
Assert.notNull(destKey, "Destination key must not be null!");
Assert.notNull(value, "Value must not be null!");
if (ClusterSlotHashUtil.isSameSlotForAllKeys(srcKey, destKey)) {
return super.sMove(srcKey, destKey, value);
}
if (connection.keyCommands().exists(srcKey)) {
if (sRem(srcKey, value) > 0 && !sIsMember(destKey, value)) {
return LettuceConverters.toBoolean(sAdd(destKey, value));
}
}
return Boolean.FALSE;
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.lettuce.LettuceConnection#sInter(byte[][])
*/
@Override
public Set sInter(byte[]... keys) {
Assert.notNull(keys, "Keys must not be null!");
Assert.noNullElements(keys, "Keys must not contain null elements!");
if (ClusterSlotHashUtil.isSameSlotForAllKeys(keys)) {
return super.sInter(keys);
}
Collection> nodeResult = connection.getClusterCommandExecutor()
.executeMultiKeyCommand((LettuceMultiKeyClusterCommandCallback>) RedisSetCommands::smembers,
Arrays.asList(keys))
.resultsAsList();
ByteArraySet result = null;
for (Set entry : nodeResult) {
ByteArraySet tmp = new ByteArraySet(entry);
if (result == null) {
result = tmp;
} else {
result.retainAll(tmp);
if (result.isEmpty()) {
break;
}
}
}
if (result == null || result.isEmpty()) {
return Collections.emptySet();
}
return result.asRawSet();
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.lettuce.LettuceConnection#sInterStore(byte[], byte[][])
*/
@Override
public Long sInterStore(byte[] destKey, byte[]... keys) {
Assert.notNull(destKey, "Destination key must not be null!");
Assert.notNull(keys, "Source keys must not be null!");
Assert.noNullElements(keys, "Source keys must not contain null elements!");
byte[][] allKeys = ByteUtils.mergeArrays(destKey, keys);
if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {
return super.sInterStore(destKey, keys);
}
Set result = sInter(keys);
if (result.isEmpty()) {
return 0L;
}
return sAdd(destKey, result.toArray(new byte[result.size()][]));
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.lettuce.LettuceConnection#sUnion(byte[][])
*/
@Override
public Set sUnion(byte[]... keys) {
Assert.notNull(keys, "Keys must not be null!");
Assert.noNullElements(keys, "Keys must not contain null elements!");
if (ClusterSlotHashUtil.isSameSlotForAllKeys(keys)) {
return super.sUnion(keys);
}
Collection> nodeResult = connection.getClusterCommandExecutor()
.executeMultiKeyCommand((LettuceMultiKeyClusterCommandCallback>) RedisSetCommands::smembers,
Arrays.asList(keys))
.resultsAsList();
ByteArraySet result = new ByteArraySet();
for (Set entry : nodeResult) {
result.addAll(entry);
}
if (result.isEmpty()) {
return Collections.emptySet();
}
return result.asRawSet();
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.lettuce.LettuceConnection#sUnionStore(byte[], byte[][])
*/
@Override
public Long sUnionStore(byte[] destKey, byte[]... keys) {
Assert.notNull(destKey, "Destination key must not be null!");
Assert.notNull(keys, "Source keys must not be null!");
Assert.noNullElements(keys, "Source keys must not contain null elements!");
byte[][] allKeys = ByteUtils.mergeArrays(destKey, keys);
if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {
return super.sUnionStore(destKey, keys);
}
Set result = sUnion(keys);
if (result.isEmpty()) {
return 0L;
}
return sAdd(destKey, result.toArray(new byte[result.size()][]));
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.lettuce.LettuceConnection#sDiff(byte[][])
*/
@Override
public Set sDiff(byte[]... keys) {
Assert.notNull(keys, "Keys must not be null!");
Assert.noNullElements(keys, "Keys must not contain null elements!");
if (ClusterSlotHashUtil.isSameSlotForAllKeys(keys)) {
return super.sDiff(keys);
}
byte[] source = keys[0];
byte[][] others = Arrays.copyOfRange(keys, 1, keys.length);
ByteArraySet values = new ByteArraySet(sMembers(source));
Collection> nodeResult = connection.getClusterCommandExecutor()
.executeMultiKeyCommand((LettuceMultiKeyClusterCommandCallback>) RedisSetCommands::smembers,
Arrays.asList(others))
.resultsAsList();
if (values.isEmpty()) {
return Collections.emptySet();
}
for (Set toSubstract : nodeResult) {
values.removeAll(toSubstract);
}
return values.asRawSet();
}
/*
* (non-Javadoc)
* @see org.springframework.data.redis.connection.lettuce.LettuceConnection#sDiffStore(byte[], byte[][])
*/
@Override
public Long sDiffStore(byte[] destKey, byte[]... keys) {
Assert.notNull(destKey, "Destination key must not be null!");
Assert.notNull(keys, "Source keys must not be null!");
Assert.noNullElements(keys, "Source keys must not contain null elements!");
byte[][] allKeys = ByteUtils.mergeArrays(destKey, keys);
if (ClusterSlotHashUtil.isSameSlotForAllKeys(allKeys)) {
return super.sDiffStore(destKey, keys);
}
Set diff = sDiff(keys);
if (diff.isEmpty()) {
return 0L;
}
return sAdd(destKey, diff.toArray(new byte[diff.size()][]));
}
}
