com.lambdaworks.redis.cluster.DynamicAsyncNodeSelection Maven / Gradle / Ivy

Go to download
/*
 * Copyright 2011-2016 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 com.lambdaworks.redis.cluster;

import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.function.Predicate;
import java.util.stream.Collectors;

import com.lambdaworks.redis.api.async.RedisAsyncCommands;
import com.lambdaworks.redis.cluster.api.StatefulRedisClusterConnection;
import com.lambdaworks.redis.cluster.models.partitions.RedisClusterNode;

/**
 * @param  Command command interface type to invoke multi-node operations.
 * @param  Key type.
 * @param  Value type.
 * @author Mark Paluch
 */
class DynamicAsyncNodeSelection extends DynamicNodeSelection, CMD, K, V> {

    public DynamicAsyncNodeSelection(StatefulRedisClusterConnection globalConnection,
            Predicate selector, ClusterConnectionProvider.Intent intent) {
        super(globalConnection, selector, intent);
    }

    public Iterator> iterator() {
        List list = nodes().stream().collect(Collectors.toList());
        return list.stream().map(node -> getConnection(node).async()).iterator();
    }

    @Override
    public RedisAsyncCommands commands(int index) {
        return statefulMap().get(nodes().get(index)).async();
    }

    @Override
    public Map> asMap() {

        List list = nodes().stream().collect(Collectors.toList());
        Map> map = new HashMap<>();

        list.forEach((key) -> map.put(key, getConnection(key).async()));

        return map;
    }

    // This method is never called, the value is supplied by AOP magic.
    @Override
    public CMD commands() {
        return null;
    }
}