| /** |
| * 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.storm.utils; |
| |
| import java.io.IOException; |
| import java.net.BindException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.zookeeper.server.NIOServerCnxnFactory; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class ZookeeperServerCnxnFactory { |
| private static final Logger LOG = LoggerFactory.getLogger(ZookeeperServerCnxnFactory.class); |
| int _port; |
| NIOServerCnxnFactory _factory; |
| |
| public ZookeeperServerCnxnFactory(int port, int maxClientCnxns) { |
| //port range |
| int max; |
| if (port <= 0) { |
| _port = 2000; |
| max = 65535; |
| } else { |
| _port = port; |
| max = port; |
| } |
| |
| try { |
| _factory = new NIOServerCnxnFactory(); |
| } catch (IOException e) { |
| _port = 0; |
| _factory = null; |
| e.printStackTrace(); |
| throw new RuntimeException(e.getMessage()); |
| } |
| |
| //look for available port |
| for (; _port <= max; _port++) { |
| try { |
| _factory.configure(new InetSocketAddress(_port), maxClientCnxns); |
| LOG.debug("Zookeeper server successfully binded at port "+_port); |
| break; |
| } catch (BindException e1) { |
| } catch (IOException e2) { |
| _port = 0; |
| _factory = null; |
| e2.printStackTrace(); |
| throw new RuntimeException(e2.getMessage()); |
| } |
| } |
| |
| if (_port > max) { |
| _port = 0; |
| _factory = null; |
| LOG.error("Failed to find a port for Zookeeper"); |
| throw new RuntimeException("No port is available to launch an inprocess zookeeper."); |
| } |
| } |
| |
| public int port() { |
| return _port; |
| } |
| |
| public NIOServerCnxnFactory factory() { |
| return _factory; |
| } |
| } |