package org.infinispan.client.hotrod;
import org.infinispan.client.hotrod.impl.transport.tcp.RoundRobinBalancingStrategy;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.ArrayList;
import java.util.List;
import static org.testng.AssertJUnit.assertEquals;
/**
* @author Mircea.Markus@jboss.com
* @since 4.1
*/
@Test (groups = "unit", testName = "client.hotrod.RoundRobinBalancingStrategyTest")
public class RoundRobinBalancingStrategyTest {
SocketAddress addr1 = new InetSocketAddress("localhost",1111);
SocketAddress addr2 = new InetSocketAddress("localhost",2222);
SocketAddress addr3 = new InetSocketAddress("localhost",3333);
SocketAddress addr4 = new InetSocketAddress("localhost",4444);
private List<SocketAddress> defaultServers;
private RoundRobinBalancingStrategy strategy;
@BeforeMethod
public void setUp() {
strategy = new RoundRobinBalancingStrategy();
defaultServers = new ArrayList<SocketAddress>();
defaultServers.add(addr1);
defaultServers.add(addr2);
defaultServers.add(addr3);
strategy.setServers(defaultServers);
}
public void simpleTest() {
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
}
public void testAddServer() {
List<SocketAddress> newServers = new ArrayList<SocketAddress>(defaultServers);
newServers.add(addr4);
strategy.setServers(newServers);
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr4, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr4, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
}
public void testRemoveServer() {
List<SocketAddress> newServers = new ArrayList<SocketAddress>(defaultServers);
newServers.remove(addr3);
strategy.setServers(newServers);
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
}
public void testRemoveServerAfterActivity() {
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
List<SocketAddress> newServers = new ArrayList<SocketAddress>(defaultServers);
newServers.remove(addr3);
strategy.setServers(newServers);
// the next server index is reset to 0 because it would have been out of bounds
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
}
public void testAddServerAfterActivity() {
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
List<SocketAddress> newServers = new ArrayList<SocketAddress>(defaultServers);
newServers.add(addr4);
strategy.setServers(newServers);
// the next server index is still valid, so it is not reset
assertEquals(addr3, strategy.nextServer());
assertEquals(addr4, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr4, strategy.nextServer());
assertEquals(addr1, strategy.nextServer());
assertEquals(addr2, strategy.nextServer());
assertEquals(addr3, strategy.nextServer());
assertEquals(addr4, strategy.nextServer());
}
}