package com.lambdaworks.redis.cluster;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Fail.fail;
import java.net.ConnectException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.lambdaworks.TestClientResources;
import com.lambdaworks.redis.*;
import com.lambdaworks.redis.cluster.api.StatefulRedisClusterConnection;
import com.lambdaworks.redis.cluster.models.partitions.Partitions;
import com.lambdaworks.redis.cluster.models.partitions.RedisClusterNode;
import com.lambdaworks.redis.internal.LettuceLists;
import com.lambdaworks.redis.resource.ClientResources;
/**
* @author Mark Paluch
*/
public class ClusterPartiallyDownTest extends AbstractTest {
private static ClientResources clientResources = TestClientResources.create();
private static int port1 = 7579;
private static int port2 = 7580;
private static int port3 = 7581;
private static int port4 = 7582;
private static final RedisURI URI_1 = RedisURI.create(TestSettings.host(), port1);
private static final RedisURI URI_2 = RedisURI.create(TestSettings.host(), port2);
private static final RedisURI URI_3 = RedisURI.create(TestSettings.host(), port3);
private static final RedisURI URI_4 = RedisURI.create(TestSettings.host(), port4);
private RedisClusterClient redisClusterClient;
@Before
public void before() throws Exception {
}
@After
public void after() throws Exception {
redisClusterClient.shutdown();
}
@Test
public void connectToPartiallyDownCluster() throws Exception {
List<RedisURI> seed = LettuceLists.unmodifiableList(URI_1, URI_2, URI_3, URI_4);
redisClusterClient = RedisClusterClient.create(clientResources, seed);
StatefulRedisClusterConnection<String, String> connection = redisClusterClient.connect();
assertThat(connection.sync().ping()).isEqualTo("PONG");
connection.close();
}
@Test
public void operateOnPartiallyDownCluster() throws Exception {
List<RedisURI> seed = LettuceLists.unmodifiableList(URI_1, URI_2, URI_3, URI_4);
redisClusterClient = RedisClusterClient.create(clientResources, seed);
StatefulRedisClusterConnection<String, String> connection = redisClusterClient.connect();
String key_10439 = "aaa";
assertThat(SlotHash.getSlot(key_10439)).isEqualTo(10439);
try {
connection.sync().get(key_10439);
fail("Missing RedisException");
} catch (RedisConnectionException e) {
assertThat(e).hasRootCauseInstanceOf(
ConnectException.class);
}
connection.close();
}
@Test
public void seedNodesAreOffline() throws Exception {
List<RedisURI> seed = LettuceLists.unmodifiableList(URI_1, URI_2, URI_3);
redisClusterClient = RedisClusterClient.create(clientResources, seed);
try {
redisClusterClient.connect();
fail("Missing RedisException");
} catch (RedisException e) {
assertThat(e).hasNoCause();
}
}
@Test
public void partitionNodesAreOffline() throws Exception {
List<RedisURI> seed = LettuceLists.unmodifiableList(URI_1, URI_2, URI_3);
redisClusterClient = RedisClusterClient.create(clientResources, seed);
Partitions partitions = new Partitions();
partitions.addPartition(
new RedisClusterNode(URI_1, "a", true, null, 0, 0, 0, new ArrayList<>(), new HashSet<>()));
partitions.addPartition(
new RedisClusterNode(URI_2, "b", true, null, 0, 0, 0, new ArrayList<>(), new HashSet<>()));
redisClusterClient.setPartitions(partitions);
try {
redisClusterClient.connect();
fail("Missing RedisConnectionException");
} catch (RedisConnectionException e) {
assertThat(e).hasRootCauseInstanceOf(ConnectException.class);
}
}
}