com.netflix.loadbalancer.ServerListLoabBalancerTest.java Source code

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Here is the source code for com.netflix.loadbalancer.ServerListLoabBalancerTest.java

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/*
*
* Copyright 2013 Netflix, Inc.
*
* 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.netflix.loadbalancer;

import static org.junit.Assert.*;

import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.apache.commons.configuration.Configuration;
import org.junit.BeforeClass;
import org.junit.Test;

import com.netflix.client.ClientFactory;
import com.netflix.client.config.IClientConfig;
import com.netflix.config.ConfigurationManager;
import com.netflix.loadbalancer.DynamicServerListLoadBalancer;
import com.netflix.loadbalancer.Server;

public class ServerListLoabBalancerTest {

    static Server[] servers = { new Server("abc", 80), new Server("xyz", 90), new Server("www.netflix.com", 80) };
    static List<Server> serverList = Arrays.asList(servers);

    public static class FixedServerList extends AbstractServerList<Server> {

        @Override
        public void initWithNiwsConfig(IClientConfig clientConfig) {
        }

        @Override
        public List<Server> getInitialListOfServers() {
            return serverList;
        }

        @Override
        public List<Server> getUpdatedListOfServers() {
            return serverList;
        }

    }

    static DynamicServerListLoadBalancer<Server> lb;

    @BeforeClass
    public static void init() {
        Configuration config = ConfigurationManager.getConfigInstance();
        config.setProperty("ServerListLoabBalancerTest.ribbon.NFLoadBalancerClassName",
                com.netflix.loadbalancer.DynamicServerListLoadBalancer.class.getName());
        config.setProperty("ServerListLoabBalancerTest.ribbon.NIWSServerListClassName",
                FixedServerList.class.getName());
        lb = (DynamicServerListLoadBalancer<Server>) ClientFactory
                .getNamedLoadBalancer("ServerListLoabBalancerTest");
    }

    @Test
    public void testChooseServer() {
        assertNotNull(lb);
        Set<Server> result = new HashSet<Server>();
        for (int i = 0; i < 100; i++) {
            Server s = lb.chooseServer(null);
            result.add(s);
        }
        Set<Server> expected = new HashSet<Server>();
        expected.addAll(serverList);
        assertEquals(expected, result);
    }
}