content: /*
   * 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.activemq.artemis.tests.extensions;
  
  import static org.junit.jupiter.api.Assertions.fail;
  
  import java.io.IOException;
  import java.net.InetSocketAddress;
  import java.net.ServerSocket;
  
  import org.junit.jupiter.api.extension.AfterEachCallback;
  import org.junit.jupiter.api.extension.BeforeEachCallback;
  import org.junit.jupiter.api.extension.Extension;
  import org.junit.jupiter.api.extension.ExtensionContext;
  
  public class PortCheckExtension implements Extension, BeforeEachCallback, AfterEachCallback {
  
     final int[] ports;
  
     public PortCheckExtension(int... ports) {
        this.ports = ports;
     }
  
     @Override
     public void beforeEach(ExtensionContext context) throws Exception {
        String testName = context.getRequiredTestMethod().getName();
        for (int p : ports) {
           if (!checkAvailable(p)) {
              fail("a previous test is using port " + p + " before " + testName);
           }
        }
     }
  
     @Override
     public void afterEach(ExtensionContext context) throws Exception {
        String testName = context.getRequiredTestMethod().getName();
        for (int p : ports) {
           if (!checkAvailable(p)) {
              fail(testName + " has left a server socket open on port " + p);
           }
        }
     }
  
     public static boolean checkAvailable(int port) {
        ServerSocket s = null;
        try {
           s = new ServerSocket();
           s.bind(new InetSocketAddress("localhost", 61616));
           return true;
        } catch (IOException e) {
           e.printStackTrace();
           return false;
        } finally {
           try {
              s.close();
           } catch (Throwable ignored) {
           }
        }
     }
  
  }
  