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Advanced and thread-safe Java Redis client for synchronous, asynchronous, and reactive usage. Supports Cluster, Sentinel, Pipelining, Auto-Reconnect, Codecs and much more.

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/*
 * 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.topology;

import com.lambdaworks.redis.RedisURI;
import com.lambdaworks.redis.cluster.models.partitions.Partitions;
import com.lambdaworks.redis.cluster.models.partitions.RedisClusterNode;

import java.util.*;

/**
 * @author Mark Paluch
 */
class NodeTopologyViews {

    private List views = new ArrayList<>();

    public NodeTopologyViews(List views) {
        this.views = views;
    }

    /**
     * Return cluster node URI's using the topology query sources and partitions.
     *
     * @return
     */
    public Set getClusterNodes() {

        Set result = new HashSet<>();

        Map knownUris = new HashMap<>();
        for (NodeTopologyView view : views) {
            knownUris.put(view.getNodeId(), view.getRedisURI());
        }

        for (NodeTopologyView view : views) {
            for (RedisClusterNode redisClusterNode : view.getPartitions()) {
                if (knownUris.containsKey(redisClusterNode.getNodeId())) {
                    result.add(knownUris.get(redisClusterNode.getNodeId()));
                } else {
                    result.add(redisClusterNode.getUri());
                }
            }
        }

        return result;
    }

    public Map toMap() {

        Map nodeSpecificViews = new TreeMap<>(TopologyComparators.RedisURIComparator.INSTANCE);

        for (NodeTopologyView view : views) {
            nodeSpecificViews.put(view.getRedisURI(), view.getPartitions());
        }

        return nodeSpecificViews;
    }
}