package org.infinispan.distribution.rehash;
import org.infinispan.Cache;
import org.infinispan.distribution.BaseDistFunctionalTest;
import org.infinispan.distribution.MagicKey;
import org.infinispan.distribution.ch.ConsistentHash;
import org.infinispan.distribution.ch.DefaultConsistentHash;
import org.infinispan.distribution.ch.DefaultConsistentHashFactory;
import org.infinispan.manager.EmbeddedCacheManager;
import org.infinispan.remoting.transport.Address;
import org.testng.annotations.Test;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* Tests performing some work on the joiner during a JOIN
*
* @author Manik Surtani
* @since 4.0
*/
// TODO This test makes no sense anymore, now that a joiner blocks until the join completes, before returning from cache.start(). This test needs to be re-thought and redesigned to test the eventual consistency (UnsureResponse) of a remote GET properly.
@Test(groups = "functional", testName = "distribution.rehash.WorkDuringJoinTest", enabled = false)
public class WorkDuringJoinTest extends BaseDistFunctionalTest {
EmbeddedCacheManager joinerManager;
Cache<Object, String> joiner;
public WorkDuringJoinTest() {
INIT_CLUSTER_SIZE = 2;
}
private List<MagicKey> init() {
List<MagicKey> keys = new ArrayList<MagicKey>(Arrays.asList(
new MagicKey("k1", c1), new MagicKey("k2", c2),
new MagicKey("k3", c1), new MagicKey("k4", c2)
));
int i = 0;
for (Cache<Object, String> c : caches) c.put(keys.get(i++), "v" + i);
log.infof("Initialized with keys %s", keys);
return keys;
}
Address startNewMember() {
joinerManager = addClusterEnabledCacheManager();
joinerManager.defineConfiguration(cacheName, configuration.build());
joiner = joinerManager.getCache(cacheName);
return manager(joiner).getAddress();
}
public void testJoinAndGet() {
List<MagicKey> keys = init();
ConsistentHash chOld = getConsistentHash(c1);
Address joinerAddress = startNewMember();
List<Address> newMembers = new ArrayList<Address>(chOld.getMembers());
newMembers.add(joinerAddress);
DefaultConsistentHashFactory chf = new DefaultConsistentHashFactory();
ConsistentHash chNew = chf.rebalance(chf.updateMembers((DefaultConsistentHash) chOld, newMembers));
// which key should me mapped to the joiner?
MagicKey keyToTest = null;
for (MagicKey k: keys) {
if (chNew.isKeyLocalToNode(joinerAddress, k)) {
keyToTest = k;
break;
}
}
if (keyToTest == null) throw new NullPointerException("Couldn't find a key mapped to J!");
assert joiner.get(keyToTest) != null;
}
}