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Introduce optimistic locking for HotRod storage

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Closes #15402
This commit is contained in:
Martin Kanis 2023-02-28 13:42:08 +01:00 committed by Michal Hajas
parent 291f4ec9bb
commit 37af5fbffe
4 changed files with 196 additions and 50 deletions
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4
model/map-hot-rod/pom.xml
View file

@ -62,6 +62,10 @@
<version>${project.version}</version>
<optional>true</optional>
</dependency>
<dependency>
<groupId>jakarta.persistence</groupId>
<artifactId>jakarta.persistence-api</artifactId>
</dependency>
</dependencies>
<build>

78
model/map-hot-rod/src/main/java/org/keycloak/models/map/storage/hotRod/HotRodMapStorage.java
View file

@ -17,6 +17,7 @@
package org.keycloak.models.map.storage.hotRod;
import org.infinispan.client.hotrod.MetadataValue;
import org.infinispan.client.hotrod.RemoteCache;
import org.infinispan.client.hotrod.Search;
import org.infinispan.commons.util.CloseableIterator;
@ -26,6 +27,7 @@ import org.jboss.logging.Logger;
import org.keycloak.common.util.Time;
import org.keycloak.models.AbstractKeycloakTransaction;
import org.keycloak.models.KeycloakSession;
import org.keycloak.models.UserSessionModel;
import org.keycloak.models.map.common.AbstractEntity;
import org.keycloak.models.map.common.DeepCloner;
import org.keycloak.models.map.common.ExpirableEntity;
@ -50,7 +52,9 @@ import org.keycloak.models.map.storage.hotRod.transaction.NoActionHotRodTransact
import org.keycloak.storage.SearchableModelField;
import org.keycloak.utils.LockObjectsForModification;
import javax.persistence.OptimisticLockException;
import java.time.Duration;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Spliterators;
@ -79,6 +83,7 @@ public class HotRodMapStorage<K, E extends AbstractHotRodEntity, V extends Abstr
private final Map<SearchableModelField<? super M>, MapModelCriteriaBuilder.UpdatePredicatesFunc<K, V, M>> fieldPredicates;
private final Long lockTimeout;
private final RemoteCache<String, String> locksCache;
private final Map<K, Long> entityVersionCache = new HashMap<>();
public HotRodMapStorage(KeycloakSession session, RemoteCache<K, E> remoteCache, StringKeyConverter<K> keyConverter, HotRodEntityDescriptor<E, V> storedEntityDescriptor, DeepCloner cloner, AllAreasHotRodTransactionsWrapper txWrapper, Long lockTimeout) {
this.session = session;
@ -146,11 +151,15 @@ public class HotRodMapStorage<K, E extends AbstractHotRodEntity, V extends Abstr
}
// Obtain value from Infinispan
E hotRodEntity = remoteCache.get(k);
if (hotRodEntity == null) return null;
MetadataValue<E> entityWithMetadata = remoteCache.getWithMetadata(k);
if (entityWithMetadata == null) return null;
// store entity version
LOG.tracef("Entity %s read in version %s", key, entityWithMetadata.getVersion(), getShortStackTrace());
entityVersionCache.put(k, entityWithMetadata.getVersion());
// Create delegate that implements Map*Entity
return delegateProducer.apply(hotRodEntity);
return entityWithMetadata.getValue() != null ? delegateProducer.apply(entityWithMetadata.getValue()) : null;
}
@Override
@ -160,23 +169,37 @@ public class HotRodMapStorage<K, E extends AbstractHotRodEntity, V extends Abstr
if (isExpirableEntity) {
Long lifespan = getLifespan(value);
if (lifespan != null) {
E previousValue;
if (lifespan > 0) {
previousValue = remoteCache.replace(key, value.getHotRodEntity(), lifespan, TimeUnit.MILLISECONDS);
if (!remoteCache.replaceWithVersion(key, value.getHotRodEntity(), entityVersionCache.get(key), lifespan, TimeUnit.MILLISECONDS, -1, TimeUnit.MILLISECONDS)) {
throw new OptimisticLockException("Entity " + key + " with version " + entityVersionCache.get(key) + " already changed by a different transaction.");
}
} else {
if (!remoteCache.removeWithVersion(key, entityVersionCache.get(key))) {
throw new OptimisticLockException("Entity " + key + " with version " + entityVersionCache.get(key) + " already changed by a different transaction.");
}
LOG.warnf("Removing entity %s from storage due to negative/zero lifespan.", key);
previousValue = remoteCache.remove(key);
}
return previousValue == null ? null : delegateProducer.apply(previousValue);
return delegateProducer.apply(value.getHotRodEntity());
}
}
E previousValue = remoteCache.replace(key, value.getHotRodEntity());
return previousValue == null ? null : delegateProducer.apply(previousValue);
if (!remoteCache.replaceWithVersion(key, value.getHotRodEntity(), entityVersionCache.get(key))) {
throw new OptimisticLockException("Entity " + key + " with version " + entityVersionCache.get(key) + " already changed by a different transaction.");
}
return delegateProducer.apply(value.getHotRodEntity());
}
@Override
public boolean delete(String key) {
K k = keyConverter.fromStringSafe(key);
Long entityVersion = entityVersionCache.get(k);
if (entityVersion != null) {
if (!remoteCache.removeWithVersion(k, entityVersion)) {
throw new OptimisticLockException("Entity " + key + " with version " + entityVersion + " already changed by a different transaction.");
}
return true;
}
return remoteCache.remove(k) != null;
}
@ -190,20 +213,6 @@ public class HotRodMapStorage<K, E extends AbstractHotRodEntity, V extends Abstr
@Override
public Stream<V> read(QueryParameters<M> queryParameters) {
if (LockObjectsForModification.isEnabled(session, storedEntityDescriptor.getModelTypeClass())) {
return pessimisticQueryRead(queryParameters);
}
Query<E> query = prepareQueryWithPrefixAndParameters(null, queryParameters);
CloseableIterator<E> iterator = paginateQuery(query, queryParameters.getOffset(),
queryParameters.getLimit()).iterator();
return closing(StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, 0), false))
.onClose(iterator::close)
.filter(Objects::nonNull) // see https://github.com/keycloak/keycloak/issues/9271
.map(this.delegateProducer);
}
private Stream<V> pessimisticQueryRead(QueryParameters<M> queryParameters) {
DefaultModelCriteria<M> dmc = queryParameters.getModelCriteriaBuilder();
// Optimization if the criteria contains only one id
@ -216,17 +225,33 @@ public class HotRodMapStorage<K, E extends AbstractHotRodEntity, V extends Abstr
if (entity == null) {
return Stream.empty();
}
boolean fulfillsQueryCriteria = mapMcb.getKeyFilter().test(keyConverter.fromString(id)) && mapMcb.getEntityFilter().test(entity);
K k = keyConverter.fromString(id);
boolean fulfillsQueryCriteria = mapMcb.getKeyFilter().test(k) && mapMcb.getEntityFilter().test(entity);
if (!fulfillsQueryCriteria) {
// entity does not fulfill whole criteria, we can release lock now
if (LockObjectsForModification.isEnabled(session, storedEntityDescriptor.getModelTypeClass())) {
HotRodLocksUtils.removeWithInstanceIdentifier(locksCache, getLockName(id));
entityVersionCache.remove(k);
}
return Stream.empty();
}
return Stream.of(entity);
}
// Criteria does not contain only one id, we need to read ids non-pessimistically and then read entities one by one pessimistically
// workaround if the query contains us.clientId field, in which case don't read by id => read without optimistic locking.
// See https://issues.redhat.com/browse/ISPN-14537
if (!dmc.isEmpty() && dmc.partiallyEvaluate((field, op, arg) -> field == UserSessionModel.SearchableFields.CLIENT_ID).toString().contains("__TRUE__")) {
Query<E> query = prepareQueryWithPrefixAndParameters(null, queryParameters);
CloseableIterator<E> iterator = paginateQuery(query, queryParameters.getOffset(),
queryParameters.getLimit()).iterator();
return closing(StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, 0), false))
.onClose(iterator::close)
.filter(Objects::nonNull) // see https://github.com/keycloak/keycloak/issues/9271
.map(this.delegateProducer);
}
// Criteria does not contain only one id, we need to read ids without locking and then read entities one by one pessimistically or optimistically
Query<Object[]> query = prepareQueryWithPrefixAndParameters("SELECT id ", queryParameters);
CloseableIterator<Object[]> iterator = paginateQuery(query, queryParameters.getOffset(),
queryParameters.getLimit()).iterator();
@ -236,11 +261,10 @@ public class HotRodMapStorage<K, E extends AbstractHotRodEntity, V extends Abstr
// Extract ids from the result
.map(a -> a[0])
.map(String.class::cast)
// Pessimistically read
// read by id => this will register the entity in an ISPN transaction
.map(this::read)
// Entity can be removed in the meanwhile, we need to check for null
.filter(Objects::nonNull);
}
private <T> Query<T> prepareQueryWithPrefixAndParameters(String prefix, QueryParameters<M> queryParameters) {

14
testsuite/model/src/test/java/org/keycloak/testsuite/model/session/UserSessionProviderModelTest.java
View file

@ -93,20 +93,6 @@ public class UserSessionProviderModelTest extends KeycloakModelTest {
@Override
public void cleanEnvironment(KeycloakSession s) {
RealmModel realm = s.realms().getRealm(realmId);
s.sessions().removeUserSessions(realm);
UserModel user1 = s.users().getUserByUsername(realm, "user1");
UserModel user2 = s.users().getUserByUsername(realm, "user2");
UserManager um = new UserManager(s);
if (user1 != null) {
um.removeUser(realm, user1);
}
if (user2 != null) {
um.removeUser(realm, user2);
}
s.realms().removeRealm(realmId);
}

144
testsuite/model/src/test/java/org/keycloak/testsuite/model/transaction/StorageTransactionTest.java
View file

@ -36,7 +36,9 @@ import org.keycloak.utils.LockObjectsForModification;
import javax.persistence.OptimisticLockException;
import javax.persistence.PessimisticLockException;
import javax.transaction.RollbackException;
import java.util.UUID;
import java.util.function.Function;
import static org.hamcrest.CoreMatchers.allOf;
@ -62,7 +64,6 @@ public class StorageTransactionTest extends KeycloakModelTest {
RealmModel r = s.realms().createRealm("1");
r.setDefaultRole(s.roles().addRealmRole(r, Constants.DEFAULT_ROLES_ROLE_PREFIX + "-" + r.getName()));
r.setAttribute("k1", "v1");
r.setSsoSessionIdleTimeout(1000);
r.setSsoSessionMaxLifespan(2000);
@ -200,9 +201,10 @@ public class StorageTransactionTest extends KeycloakModelTest {
}
@Test
// Optimistic locking works only with map-jpa
@RequireProvider(value = MapStorageProvider.class, only = JpaMapStorageProviderFactory.PROVIDER_ID)
public void testOptimisticLockingException() throws Exception {
// Optimistic locking works only with map-jpa and map-hotrod
@RequireProvider(value = MapStorageProvider.class, only = {JpaMapStorageProviderFactory.PROVIDER_ID,
HotRodMapStorageProviderFactory.PROVIDER_ID})
public void testOptimisticLockingExceptionReadById() throws Exception {
withRealm(realmId, (session, realm) -> {
realm.setDisplayName("displayName1");
return null;
@ -230,8 +232,138 @@ public class StorageTransactionTest extends KeycloakModelTest {
// tx2 should fail as tx1 already changed the value
assertException(tx2::commit,
allOf(instanceOf(ModelException.class),
hasCause(instanceOf(OptimisticLockException.class))));
anyOf(
allOf(instanceOf(RuntimeException.class), hasCause(instanceOf(RollbackException.class))),
allOf(instanceOf(ModelException.class), hasCause(instanceOf(OptimisticLockException.class))),
allOf(instanceOf(OptimisticLockException.class))
));
}
}
@Test
// Optimistic locking works only with map-jpa and map-hotrod
@RequireProvider(value = MapStorageProvider.class, only = {JpaMapStorageProviderFactory.PROVIDER_ID,
HotRodMapStorageProviderFactory.PROVIDER_ID})
public void testOptimisticLockingExceptionReadByQuery() throws Exception {
withRealm(realmId, (session, realm) -> {
realm.setDisplayName("displayName1");
return null;
});
try (TransactionController tx1 = new TransactionController(getFactory());
TransactionController tx2 = new TransactionController(getFactory())) {
// tx1 acquires lock
tx1.begin();
tx2.begin();
// both transactions touch the same entity
tx1.runStep(session -> {
session.realms().getRealmByName("1").setDisplayName("displayName2");
return null;
});
tx2.runStep(session -> {
session.realms().getRealmByName("1").setDisplayName("displayName3");
return null;
});
// tx1 transaction should be successful
tx1.commit();
// tx2 should fail as tx1 already changed the value
assertException(tx2::commit,
anyOf(
allOf(instanceOf(RuntimeException.class), hasCause(instanceOf(RollbackException.class))),
allOf(instanceOf(ModelException.class), hasCause(instanceOf(OptimisticLockException.class))),
allOf(instanceOf(OptimisticLockException.class))
));
}
}
@Test
// Optimistic locking works only with map-jpa and map-hotrod
@RequireProvider(value = MapStorageProvider.class, only = {JpaMapStorageProviderFactory.PROVIDER_ID,
HotRodMapStorageProviderFactory.PROVIDER_ID})
public void testOptimisticLockingDeleteWhenReadingByQuery() throws Exception {
withRealm(realmId, (session, realm) -> {
session.users().addUser(realm, "user", "user", false, false);
return null;
});
try (TransactionController tx1 = new TransactionController(getFactory());
TransactionController tx2 = new TransactionController(getFactory())) {
tx1.begin();
tx2.begin();
// both transactions touch the same entity
tx1.runStep(session -> {
// read by criteria
session.users().getUserByUsername(session.realms().getRealm(realmId), "user").setFirstName("firstName");
return null;
});
tx2.runStep(session -> {
RealmModel realm = session.realms().getRealm(realmId);
// remove by id
session.users().removeUser(realm, session.users().getUserByUsername(realm, "user"));
return null;
});
// tx1 transaction should be successful
tx1.commit();
// tx2 should fail as tx1 already changed the value
assertException(tx2::commit,
anyOf(
allOf(instanceOf(RuntimeException.class), hasCause(instanceOf(RollbackException.class))),
allOf(instanceOf(ModelException.class), hasCause(instanceOf(OptimisticLockException.class))),
allOf(instanceOf(OptimisticLockException.class))
));
}
}
@Test
// Optimistic locking works only with map-jpa and map-hotrod
@RequireProvider(value = MapStorageProvider.class, only = {JpaMapStorageProviderFactory.PROVIDER_ID,
HotRodMapStorageProviderFactory.PROVIDER_ID})
public void testOptimisticLockingDeleteWhenReadingById() throws Exception {
String userId = UUID.randomUUID().toString();
withRealm(realmId, (session, realm) -> {
session.users().addUser(realm, userId, "user", false, false);
return null;
});
try (TransactionController tx1 = new TransactionController(getFactory());
TransactionController tx2 = new TransactionController(getFactory())) {
tx1.begin();
tx2.begin();
// both transactions touch the same entity
tx1.runStep(session -> {
// read by id
session.users().getUserById(session.realms().getRealm(realmId), userId).setFirstName("firstName");
return null;
});
tx2.runStep(session -> {
RealmModel realm = session.realms().getRealm(realmId);
// remove by id after read by id
session.users().removeUser(realm, session.users().getUserById(realm, userId));
return null;
});
// tx1 transaction should be successful
tx1.commit();
// tx2 should fail as tx1 already changed the value
assertException(tx2::commit,
anyOf(
allOf(instanceOf(RuntimeException.class), hasCause(instanceOf(RollbackException.class))),
allOf(instanceOf(ModelException.class), hasCause(instanceOf(OptimisticLockException.class))),
allOf(instanceOf(OptimisticLockException.class))
));
}
}
}