| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.pulsar.zookeeper; |
| |
| import static org.apache.bookkeeper.util.SafeRunnable.safeRun; |
| |
| import java.io.IOException; |
| import java.util.concurrent.CompletableFuture; |
| |
| import org.apache.bookkeeper.common.util.OrderedExecutor; |
| import org.apache.bookkeeper.zookeeper.BoundExponentialBackoffRetryPolicy; |
| import org.apache.bookkeeper.zookeeper.ZooKeeperClient; |
| import org.apache.zookeeper.KeeperException; |
| import org.apache.zookeeper.ZooKeeper; |
| import org.apache.zookeeper.ZooKeeper.States; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class ZookeeperBkClientFactoryImpl implements ZooKeeperClientFactory { |
| |
| private static final Logger log = LoggerFactory.getLogger(ZookeeperBkClientFactoryImpl.class); |
| |
| private final OrderedExecutor executor; |
| |
| public ZookeeperBkClientFactoryImpl(OrderedExecutor executor) { |
| this.executor = executor; |
| } |
| |
| @Override |
| public CompletableFuture<ZooKeeper> create(String serverList, SessionType sessionType, int zkSessionTimeoutMillis) { |
| CompletableFuture<ZooKeeper> future = new CompletableFuture<>(); |
| |
| executor.execute(safeRun(() -> { |
| try { |
| ZooKeeper zk = ZooKeeperClient.newBuilder().connectString(serverList) |
| .sessionTimeoutMs(zkSessionTimeoutMillis) |
| .connectRetryPolicy(new BoundExponentialBackoffRetryPolicy(zkSessionTimeoutMillis, |
| zkSessionTimeoutMillis, 0)) |
| .build(); |
| |
| if (zk.getState() == States.CONNECTEDREADONLY && sessionType != SessionType.AllowReadOnly) { |
| future.completeExceptionally(new IllegalStateException("Cannot use a read-only session")); |
| } |
| |
| log.info("ZooKeeper session established: {}", zk); |
| future.complete(zk); |
| } catch (IOException | KeeperException | InterruptedException exception) { |
| log.error("Failed to establish ZooKeeper session: {}", exception.getMessage()); |
| future.completeExceptionally(exception); |
| } |
| }, throwable -> { |
| future.completeExceptionally(throwable); |
| })); |
| |
| return future; |
| } |
| } |