test/unit/org/apache/cassandra/locator/EC2SnitchTest.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
 * under the License.
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 */


import static org.junit.Assert.assertEquals;

import java.io.IOException;
import java.net.InetAddress;
import java.util.Map;

import org.apache.cassandra.config.ConfigurationException;
import org.apache.cassandra.gms.ApplicationState;
import org.apache.cassandra.gms.Gossiper;
import org.apache.cassandra.gms.VersionedValue;
import org.apache.cassandra.service.StorageService;
import org.junit.Test;

public class EC2SnitchTest
{

    private class TestEC2Snitch extends Ec2Snitch
    {
        public TestEC2Snitch() throws IOException, ConfigurationException
        {
            super();
        }

        @Override
        String awsApiCall(String url) throws IOException, ConfigurationException
        {
            return "us-east-1d";
        }
    }

    @Test
    public void testRac() throws IOException, ConfigurationException
    {
        Ec2Snitch snitch = new TestEC2Snitch();
        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("us-west"));
        stateMap.put(ApplicationState.RACK, StorageService.instance.valueFactory.datacenter("1a"));
        
        assertEquals("us-west", snitch.getDatacenter(nonlocal));
        assertEquals("1a", snitch.getRack(nonlocal));
        
        assertEquals("us-east", snitch.getDatacenter(local));
        assertEquals("1d", snitch.getRack(local));
    }
}