public void testAtomicMapPutDuringJoin() throws ExecutionException, InterruptedException {
Cache cache = cache(0, "atomic");
ControlledRpcManager crm = new ControlledRpcManager(cache.getAdvancedCache().getRpcManager());
TestingUtil.replaceComponent(cache, RpcManager.class, crm, true);
MagicKey atomicMapKey = new MagicKey("atomicMapKey", cache);
AtomicMap atomicMap = AtomicMapLookup.getAtomicMap(cache, atomicMapKey);
atomicMap.put("key1", "value1");
crm.blockBefore(StateResponseCommand.class);
ConfigurationBuilder c = getConfigurationBuilder();
final EmbeddedCacheManager joiner = addClusterEnabledCacheManager(c);
Future<Cache> future =
fork(
new Callable<Cache>() {
@Override
public Cache call() throws Exception {
return joiner.getCache("atomic");
}
});
crm.waitForCommandToBlock();
// Now we know state transfer will try to create an AtomicMap(key1=value1) on cache2
// Insert another key in the atomic map, and check that cache2 has both keys after the state
// transfer
atomicMap.put("key2", "value2");
crm.stopBlocking();
Cache cache2 = future.get();
AtomicMap atomicMap2 = AtomicMapLookup.getAtomicMap(cache2, atomicMapKey);
assertEquals(new HashSet<String>(Arrays.asList("key1", "key2")), atomicMap2.keySet());
}
private ControlledRpcManager blockStateResponseCommand(final Cache cache)
throws InterruptedException {
RpcManager rpcManager = TestingUtil.extractComponent(cache, RpcManager.class);
ControlledRpcManager controlledRpcManager = new ControlledRpcManager(rpcManager);
controlledRpcManager.blockBefore(StateResponseCommand.class);
TestingUtil.replaceComponent(cache, RpcManager.class, controlledRpcManager, true);
return controlledRpcManager;
}
public void testPrimaryOwnerGoesDownBeforeBackupRaisesEvent()
throws InterruptedException, TimeoutException, ExecutionException, BrokenBarrierException {
final Cache<Object, String> cache0 = cache(0, CACHE_NAME);
Cache<Object, String> cache1 = cache(1, CACHE_NAME);
Cache<Object, String> cache2 = cache(2, CACHE_NAME);
ClusterListener clusterListener = new ClusterListener();
cache0.addListener(clusterListener);
// Now we want to block the outgoing put to the backup owner
RpcManager rpcManager = TestingUtil.extractComponent(cache1, RpcManager.class);
ControlledRpcManager controlledRpcManager = new ControlledRpcManager(rpcManager);
controlledRpcManager.blockBefore(PutKeyValueCommand.class);
TestingUtil.replaceComponent(cache1, RpcManager.class, controlledRpcManager, true);
final MagicKey key = new MagicKey(cache1, cache2);
Future<String> future =
fork(
new Callable<String>() {
@Override
public String call() throws Exception {
return cache0.put(key, FIRST_VALUE);
}
});
// Wait until the primary owner has sent the put command successfully to backup
controlledRpcManager.waitForCommandToBlock(10, TimeUnit.SECONDS);
// Kill the cache now
TestingUtil.killCacheManagers(cache1.getCacheManager());
// This should return null normally, but since it was retried it returns it's own value :(
// Maybe some day this can work properly
assertEquals(null, future.get(10, TimeUnit.SECONDS));
// We should have received an event that was marked as retried
assertEquals(clusterListener.events.size(), 1);
CacheEntryEvent<Object, String> event = clusterListener.events.get(0);
// Since it was a retry but the backup got the write the event isn't a CREATE!!
assertEquals(event.getType(), Event.Type.CACHE_ENTRY_CREATED);
CacheEntryCreatedEvent<Object, String> modEvent =
(CacheEntryCreatedEvent<Object, String>) event;
assertTrue(modEvent.isCommandRetried());
assertEquals(modEvent.getKey(), key);
assertEquals(modEvent.getValue(), FIRST_VALUE);
}
/**
* When L1 is enabled this test should not be ran when a previous value is present as it will
* cause timeouts. Due to how locking works with L1 this cannot occur when the previous value
* exists.
*
* @param op
* @throws Exception
*/
protected void doTestWhereCommitOccursAfterStateTransferBeginsBeforeCompletion(
final TestWriteOperation op) throws Exception {
if (l1Enabled() && op.getPreviousValue() != null) {
fail("This test cannot be ran with L1 when a previous value is set");
}
// Test scenario:
// cache0,1,2 are in the cluster, an owner leaves
// Key k is in the cache, and is transferred to the non owner
// A user operation also modifies key k causing an invalidation
// on the non owner which is getting the state transfer
final AdvancedCache<Object, Object> primaryOwnerCache = cache(0, cacheName).getAdvancedCache();
final AdvancedCache<Object, Object> backupOwnerCache = cache(1, cacheName).getAdvancedCache();
final AdvancedCache<Object, Object> nonOwnerCache = cache(2, cacheName).getAdvancedCache();
final MagicKey key = new MagicKey(primaryOwnerCache, backupOwnerCache);
// Prepare for replace/remove: put a previous value in cache0
final Object previousValue = op.getPreviousValue();
if (previousValue != null) {
primaryOwnerCache.put(key, previousValue);
assertEquals(previousValue, primaryOwnerCache.get(key));
log.tracef("Previous value inserted: %s = %s", key, previousValue);
assertEquals(previousValue, nonOwnerCache.get(key));
if (l1Enabled()) {
assertIsInL1(nonOwnerCache, key);
}
}
int preJoinTopologyId =
primaryOwnerCache
.getComponentRegistry()
.getStateTransferManager()
.getCacheTopology()
.getTopologyId();
// Block any state response commands on cache0
CheckPoint checkPoint = new CheckPoint();
ControlledRpcManager blockingRpcManager0 = blockStateResponseCommand(primaryOwnerCache);
// Block the rebalance confirmation on cache0
blockRebalanceConfirmation(primaryOwnerCache.getCacheManager(), checkPoint);
assertEquals(
primaryOwnerCache.getCacheManager().getCoordinator(),
primaryOwnerCache.getCacheManager().getAddress());
// Remove the leaver
log.trace("Stopping the cache");
backupOwnerCache.getCacheManager().stop();
int rebalanceTopologyId = preJoinTopologyId + 2;
// Wait for the write CH to contain the joiner everywhere
eventually(
new Condition() {
@Override
public boolean isSatisfied() throws Exception {
return primaryOwnerCache.getRpcManager().getMembers().size() == 2
&& nonOwnerCache.getRpcManager().getMembers().size() == 2;
}
});
assertEquals(
primaryOwnerCache.getCacheManager().getCoordinator(),
primaryOwnerCache.getCacheManager().getAddress());
// Wait for cache0 to collect the state to send to cache1 (including our previous value).
blockingRpcManager0.waitForCommandToBlock();
// Every PutKeyValueCommand will be blocked before committing the entry on cache1
CyclicBarrier beforeCommitCache1Barrier = new CyclicBarrier(2);
BlockingInterceptor blockingInterceptor1 =
new BlockingInterceptor(beforeCommitCache1Barrier, op.getCommandClass(), true);
nonOwnerCache.addInterceptorAfter(blockingInterceptor1, EntryWrappingInterceptor.class);
// Put/Replace/Remove from cache0 with cache0 as primary owner, cache1 will become a backup
// owner for the retry
// The put command will be blocked on cache1 just before committing the entry.
Future<Object> future =
fork(
new Callable<Object>() {
@Override
public Object call() throws Exception {
return op.perform(primaryOwnerCache, key);
}
});
// Wait for the entry to be wrapped on cache1
beforeCommitCache1Barrier.await(10, TimeUnit.SECONDS);
// Remove the interceptor so we don't mess up any other state transfer puts
removeAllBlockingInterceptorsFromCache(nonOwnerCache);
// Allow the state to be applied on cache1 (writing the old value for our entry)
blockingRpcManager0.stopBlocking();
// Wait for second in line to finish applying the state, but don't allow the rebalance
// confirmation to be processed.
// (It would change the topology and it would trigger a retry for the command.)
checkPoint.awaitStrict(
"pre_rebalance_confirmation_"
+ rebalanceTopologyId
+ "_from_"
+ primaryOwnerCache.getCacheManager().getAddress(),
10,
SECONDS);
// Now allow the command to commit on cache1
beforeCommitCache1Barrier.await(10, TimeUnit.SECONDS);
// Wait for the command to finish and check that it didn't fail
Object result = future.get(10, TimeUnit.SECONDS);
assertEquals(op.getReturnValue(), result);
log.tracef("%s operation is done", op);
// Allow the rebalance confirmation to proceed and wait for the topology to change everywhere
checkPoint.trigger(
"resume_rebalance_confirmation_"
+ rebalanceTopologyId
+ "_from_"
+ primaryOwnerCache.getCacheManager().getAddress());
checkPoint.trigger(
"resume_rebalance_confirmation_"
+ rebalanceTopologyId
+ "_from_"
+ nonOwnerCache.getCacheManager().getAddress());
TestingUtil.waitForRehashToComplete(primaryOwnerCache, nonOwnerCache);
switch (op) {
case REMOVE:
case REMOVE_EXACT:
break;
default:
assertIsInContainerImmortal(primaryOwnerCache, key);
assertIsInContainerImmortal(nonOwnerCache, key);
break;
}
// Check the value to make sure data container contains correct value
assertEquals(op.getValue(), primaryOwnerCache.get(key));
assertEquals(op.getValue(), nonOwnerCache.get(key));
}