/*
* 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.
*/
package org.apache.cassandra.locator;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.dht.BigIntegerToken;
import org.apache.cassandra.dht.Token;
public class OldNetworkTopologyStrategyTest
{
private List<Token> endpointTokens;
private List<Token> keyTokens;
private TokenMetadata tmd;
private Map<String, ArrayList<InetAddress>> expectedResults;
@Before
public void init()
{
endpointTokens = new ArrayList<Token>();
keyTokens = new ArrayList<Token>();
tmd = new TokenMetadata();
expectedResults = new HashMap<String, ArrayList<InetAddress>>();
}
/**
* 4 same rack endpoints
*
* @throws UnknownHostException
*/
@Test
public void testBigIntegerEndpointsA() throws UnknownHostException
{
RackInferringSnitch endpointSnitch = new RackInferringSnitch();
AbstractReplicationStrategy strategy = new OldNetworkTopologyStrategy("Keyspace1", tmd, endpointSnitch, null);
addEndpoint("0", "5", "254.0.0.1");
addEndpoint("10", "15", "254.0.0.2");
addEndpoint("20", "25", "254.0.0.3");
addEndpoint("30", "35", "254.0.0.4");
expectedResults.put("5", buildResult("254.0.0.2", "254.0.0.3", "254.0.0.4"));
expectedResults.put("15", buildResult("254.0.0.3", "254.0.0.4", "254.0.0.1"));
expectedResults.put("25", buildResult("254.0.0.4", "254.0.0.1", "254.0.0.2"));
expectedResults.put("35", buildResult("254.0.0.1", "254.0.0.2", "254.0.0.3"));
runTestForReplicatedTables(strategy);
}
/**
* 3 same rack endpoints
* 1 external datacenter
*
* @throws UnknownHostException
*/
@Test
public void testBigIntegerEndpointsB() throws UnknownHostException
{
RackInferringSnitch endpointSnitch = new RackInferringSnitch();
AbstractReplicationStrategy strategy = new OldNetworkTopologyStrategy("Keyspace1", tmd, endpointSnitch, null);
addEndpoint("0", "5", "254.0.0.1");
addEndpoint("10", "15", "254.0.0.2");
addEndpoint("20", "25", "254.1.0.3");
addEndpoint("30", "35", "254.0.0.4");
expectedResults.put("5", buildResult("254.0.0.2", "254.1.0.3", "254.0.0.4"));
expectedResults.put("15", buildResult("254.1.0.3", "254.0.0.4", "254.0.0.1"));
expectedResults.put("25", buildResult("254.0.0.4", "254.1.0.3", "254.0.0.1"));
expectedResults.put("35", buildResult("254.0.0.1", "254.1.0.3", "254.0.0.2"));
runTestForReplicatedTables(strategy);
}
/**
* 2 same rack endpoints
* 1 same datacenter, different rack endpoints
* 1 external datacenter
*
* @throws UnknownHostException
*/
@Test
public void testBigIntegerEndpointsC() throws UnknownHostException
{
RackInferringSnitch endpointSnitch = new RackInferringSnitch();
AbstractReplicationStrategy strategy = new OldNetworkTopologyStrategy("Keyspace1", tmd, endpointSnitch, null);
addEndpoint("0", "5", "254.0.0.1");
addEndpoint("10", "15", "254.0.0.2");
addEndpoint("20", "25", "254.0.1.3");
addEndpoint("30", "35", "254.1.0.4");
expectedResults.put("5", buildResult("254.0.0.2", "254.0.1.3", "254.1.0.4"));
expectedResults.put("15", buildResult("254.0.1.3", "254.1.0.4", "254.0.0.1"));
expectedResults.put("25", buildResult("254.1.0.4", "254.0.0.1", "254.0.0.2"));
expectedResults.put("35", buildResult("254.0.0.1", "254.0.1.3", "254.1.0.4"));
runTestForReplicatedTables(strategy);
}
private void runTestForReplicatedTables(AbstractReplicationStrategy strategy) throws UnknownHostException
{
for (String table : DatabaseDescriptor.getNonSystemTables())
{
if (DatabaseDescriptor.getReplicationFactor(table) == 3)
testGetEndpoints(strategy, keyTokens.toArray(new Token[0]), table);
}
}
private ArrayList<InetAddress> buildResult(String... addresses) throws UnknownHostException
{
ArrayList<InetAddress> result = new ArrayList<InetAddress>();
for (String address : addresses)
{
result.add(InetAddress.getByName(address));
}
return result;
}
private void addEndpoint(String endpointTokenID, String keyTokenID, String endpointAddress) throws UnknownHostException
{
BigIntegerToken endpointToken = new BigIntegerToken(endpointTokenID);
endpointTokens.add(endpointToken);
BigIntegerToken keyToken = new BigIntegerToken(keyTokenID);
keyTokens.add(keyToken);
InetAddress ep = InetAddress.getByName(endpointAddress);
tmd.updateNormalToken(endpointToken, ep);
}
private void testGetEndpoints(AbstractReplicationStrategy strategy, Token[] keyTokens, String table) throws UnknownHostException
{
for (Token keyToken : keyTokens)
{
List<InetAddress> endpoints = strategy.getNaturalEndpoints(keyToken);
for (int j = 0; j < endpoints.size(); j++)
{
ArrayList<InetAddress> hostsExpected = expectedResults.get(keyToken.toString());
assertEquals(endpoints.get(j), hostsExpected.get(j));
}
}
}
}