test/unit/org/apache/cassandra/locator/GoogleCloudSnitchTest.java

package org.apache.cassandra.locator;
/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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
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import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Map;

import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.db.Keyspace;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.gms.ApplicationState;
import org.apache.cassandra.gms.Gossiper;
import org.apache.cassandra.gms.VersionedValue;
import org.apache.cassandra.net.MessagingService;
import org.apache.cassandra.net.OutboundTcpConnectionPool;
import org.apache.cassandra.service.StorageService;

import static org.junit.Assert.assertEquals;

public class GoogleCloudSnitchTest
{
    private static String az;

    @BeforeClass
    public static void setup() throws Exception
    {
        SchemaLoader.mkdirs();
        SchemaLoader.cleanup();
        StorageService.instance.initServer(0);
    }

    private class TestGoogleCloudSnitch extends GoogleCloudSnitch
    {
        public TestGoogleCloudSnitch() throws IOException, ConfigurationException
        {
            super();
        }

        @Override
        String gceApiCall(String url) throws IOException, ConfigurationException
        {
            return az;
        }
    }

    @Test
    public void testRac() throws IOException, ConfigurationException
    {
        az = "us-central1-a";
        GoogleCloudSnitch snitch = new TestGoogleCloudSnitch();
        InetAddress local = InetAddress.getByName("127.0.0.1");
        InetAddress nonlocal = InetAddress.getByName("127.0.0.7");

        Gossiper.instance.addSavedEndpoint(nonlocal);
        Map<ApplicationState,VersionedValue> stateMap = Gossiper.instance.getEndpointStateForEndpoint(nonlocal).getApplicationStateMap();
        stateMap.put(ApplicationState.DC, StorageService.instance.valueFactory.datacenter("europe-west1"));
        stateMap.put(ApplicationState.RACK, StorageService.instance.valueFactory.datacenter("a"));

        assertEquals("europe-west1", snitch.getDatacenter(nonlocal));
        assertEquals("a", snitch.getRack(nonlocal));

        assertEquals("us-central1", snitch.getDatacenter(local));
        assertEquals("a", snitch.getRack(local));
    }
    
    @Test
    public void testNewRegions() throws IOException, ConfigurationException
    {
        az = "asia-east1-a";
        GoogleCloudSnitch snitch = new TestGoogleCloudSnitch();
        InetAddress local = InetAddress.getByName("127.0.0.1");
        assertEquals("asia-east1", snitch.getDatacenter(local));
        assertEquals("a", snitch.getRack(local));
    }

    @AfterClass
    public static void tearDown()
    {
        StorageService.instance.stopClient();
    }
}