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+/**
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+ * Licensed to the Apache Software Foundation (ASF) under one
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+ * or more contributor license agreements. See the NOTICE file
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+ * distributed with this work for additional information
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+ * regarding copyright ownership. The ASF licenses this file
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+ * to you under the Apache License, Version 2.0 (the
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+ * "License"); you may not use this file except in compliance
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+ * with the License. You may obtain a copy of the License at
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+ * <p>
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+ * http://www.apache.org/licenses/LICENSE-2.0
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+ * <p>
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+ * Unless required by applicable law or agreed to in writing, software
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+ * distributed under the License is distributed on an "AS IS" BASIS,
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+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+ * See the License for the specific language governing permissions and
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+ * limitations under the License.
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+ */
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+
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+package org.apache.zookeeper.compatibility;
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+
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+import static org.junit.Assert.assertEquals;
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+import static org.junit.Assert.assertNotNull;
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+import java.util.concurrent.BlockingQueue;
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+import java.util.concurrent.LinkedBlockingQueue;
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+import java.util.concurrent.TimeUnit;
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+import org.apache.curator.framework.CuratorFramework;
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+import org.apache.curator.framework.CuratorFrameworkFactory;
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+import org.apache.curator.framework.recipes.cache.CuratorCache;
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+import org.apache.curator.retry.RetryOneTime;
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+import org.apache.curator.test.TestingServer;
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+import org.junit.Test;
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+
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+/**
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+ * Make sure minimal Apache Curator APIs work correctly. As it's a widely used ZooKeeper
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+ * client library we should not break it.
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+ */
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+public class TestApacheCuratorCompatibility {
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+ private static final int TIMEOUT_MS = 5000;
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+
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+ @Test
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+ public void testBasicUsageOfApisAndRecipes() throws Exception {
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+ try (TestingServer server = new TestingServer()) {
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+ RetryOneTime retryPolicy = new RetryOneTime(1);
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+ try (CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), retryPolicy)) {
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+ try (CuratorCache cache = CuratorCache.build(client, "/base/path")) {
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+ client.start();
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+ cache.start();
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+
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+ BlockingQueue<String> paths = new LinkedBlockingQueue<>();
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+ cache.listenable().addListener((dummy1, dummy2, data) -> paths.add(data.getPath()));
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+
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+ client.create().creatingParentsIfNeeded().forPath("/base/path/1");
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+ client.create().creatingParentsIfNeeded().forPath("/base/path/2");
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+ client.create().creatingParentsIfNeeded().forPath("/base/path/1/a");
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+ client.create().creatingParentsIfNeeded().forPath("/base/path/2/a");
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+
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+ assertEquals("/base/path", poll(paths));
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+ assertEquals("/base/path/1", poll(paths));
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+ assertEquals("/base/path/2", poll(paths));
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+ assertEquals("/base/path/1/a", poll(paths));
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+ assertEquals("/base/path/2/a", poll(paths));
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+ }
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+ }
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+ }
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+ }
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+
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+ private static String poll(BlockingQueue<String> queue) {
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+ try {
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+ String value = queue.poll(TIMEOUT_MS, TimeUnit.MILLISECONDS);
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+ assertNotNull("Event poll timed out", value);
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+ return value;
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+ } catch (InterruptedException e) {
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+ Thread.currentThread().interrupt();
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+ throw new RuntimeException(e);
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+ }
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+ }
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+}
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Jordan Zimmerman