| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onosproject.store.primitives.impl; |
| |
| import java.util.concurrent.CountDownLatch; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| import io.atomix.protocols.raft.proxy.RaftProxy; |
| import io.atomix.protocols.raft.service.RaftService; |
| import org.junit.Test; |
| import org.onosproject.store.primitives.DefaultDocumentTree; |
| import org.onosproject.store.primitives.resources.impl.AtomixDocumentTree; |
| import org.onosproject.store.primitives.resources.impl.AtomixDocumentTreeService; |
| import org.onosproject.store.primitives.resources.impl.AtomixTestBase; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.service.DocumentPath; |
| import org.onosproject.store.service.DocumentTree; |
| import org.onosproject.store.service.Ordering; |
| import org.onosproject.store.service.Serializer; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.fail; |
| |
| /** |
| * Unit tests for cached {@link AtomixDocumentTree}. |
| */ |
| public class CachingAsyncDocumentTreeTest extends AtomixTestBase<AtomixDocumentTree> { |
| |
| @Override |
| protected RaftService createService() { |
| return new AtomixDocumentTreeService(Ordering.NATURAL); |
| } |
| |
| @Override |
| protected AtomixDocumentTree createPrimitive(RaftProxy proxy) { |
| return new AtomixDocumentTree(proxy); |
| } |
| |
| /** |
| * Tests that reads following events are not stale when cached. |
| */ |
| @Test |
| public void testCacheConsistency() throws Throwable { |
| Serializer serializer = Serializer.using(KryoNamespaces.BASIC); |
| |
| DocumentTree<String> tree1 = new DefaultDocumentTree<>( |
| new CachingAsyncDocumentTree<>( |
| new DefaultDistributedDocumentTree<>( |
| "testCacheConsistency", |
| newPrimitive("testCacheConsistency"), |
| serializer)), 5000); |
| DocumentTree<String> tree2 = new DefaultDocumentTree<>( |
| new CachingAsyncDocumentTree<>( |
| new DefaultDistributedDocumentTree<>( |
| "testCacheConsistency", |
| newPrimitive("testCacheConsistency"), |
| serializer)), 5000); |
| |
| CountDownLatch latch = new CountDownLatch(1); |
| AtomicBoolean failed = new AtomicBoolean(); |
| |
| Executor executor = Executors.newSingleThreadExecutor(); |
| DocumentPath path = DocumentPath.from("root|foo"); |
| tree1.addListener(path, event -> executor.execute(() -> { |
| // Check only the "baz" value since it's the last one written. If we check for "bar" on the "bar" event, |
| // there's a race in the test wherein the cache can legitimately be updated to "baz" before the next read. |
| if (event.newValue().get().value().equals("baz")) { |
| try { |
| assertEquals(event.newValue().get().value(), tree1.get(path).value()); |
| } catch (AssertionError e) { |
| failed.set(true); |
| } |
| latch.countDown(); |
| } |
| })); |
| |
| tree2.set(path, "bar"); |
| tree2.set(path, "baz"); |
| |
| latch.await(10, TimeUnit.SECONDS); |
| if (latch.getCount() == 1 || failed.get()) { |
| fail(); |
| } |
| } |
| } |