/
CommandsLoadBalancer.java
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/
CommandsLoadBalancer.java
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/**
* Copyright (c) 2013-2024 Nikita Koksharov
*
* 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.redisson.connection.balancer;
import org.redisson.client.protocol.RedisCommand;
import org.redisson.connection.ClientConnectionsEntry;
import org.redisson.misc.RedisURI;
import java.util.List;
import java.util.Set;
import java.util.stream.Collectors;
/**
* Load Balancer redirects specified commands to the Redis node with specified address.
*
* @author Nikita Koksharov
*
*/
public class CommandsLoadBalancer extends RoundRobinLoadBalancer implements LoadBalancer {
private Set<String> commands;
private RedisURI address;
@Override
public ClientConnectionsEntry getEntry(List<ClientConnectionsEntry> clientsCopy, RedisCommand<?> redisCommand) {
if (commands.contains(redisCommand.getName().toLowerCase())) {
return clientsCopy.stream()
.filter(c -> address.equals(c.getClient().getAddr()))
.findAny()
.orElseGet(() -> {
return getEntry(clientsCopy);
});
}
return getEntry(clientsCopy);
}
/**
* Defines Redis node address where the commands are redirected to
*
* @param address Redis node address
*/
public void setAddress(String address) {
this.address = new RedisURI(address);
}
/**
* Defines command names which are redirected to the Redis node
* specified by {@link #setAddress(String)}
*
* @param commands commands list
*/
public void setCommands(List<String> commands) {
this.commands = commands.stream()
.map(c -> c.toLowerCase())
.collect(Collectors.toSet());
}
}