2

我正在使用 Apache Axis 2 实现 SOAP 客户端。由于 SOAP 客户端必须处理大量请求，因此我正在使用连接池。

为此，我必须设置一些从 WSDL 文件生成的存根的传输层配置：

stub._getServiceClient().getOptions().setProperty(HTTPConstants.REUSE_HTTP_CLIENT, Constants.VALUE_TRUE);

MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
connectionManager.getParams().setDefaultMaxConnectionsPerHost(MAX_CONNECTIONS_PER_HOST);
connectionManager.closeIdleConnections(IDLE_CONNECTION_TIMEOUT);
HttpClient httpClient = new HttpClient(connectionManager);

stub._getServiceClient().getOptions().setProperty(HTTPConstants.CACHED_HTTP_CLIENT, httpClient);

我的客户似乎工作得很好。但是，我想知道如何测试连接池是否以正确的方式工作（即创建的连接仅在 IDLE_CONNECTION_TIMEOUT 常量定义的时间之后才被销毁）。有任何想法吗？

4

3 回答 3

1

基于 JUnit 3.x 的伪代码：

  setUp() {
    initialize connection manager;
    initialize connection by creating client;
  }

  tearDown() {
    close connection if necessary;
    close connection manager if necessary;
  }

  testConnectionOpen() {
    assert that connection is open;
    pause for time of idle connection timeout - 1 second;
    assert that connection **is still open**;
  }

  testConnectionClosed() {
    assert that connection is open;
    pause for time of idle connection timeout + 1 second;
    assert that connection **is closed**;
  }

应根据连接管理器的灵敏度调整加 1 秒和减 1 秒。

于 2009-07-23T06:17:43.413 回答
0

编写一个会发出大量请求的测试平台应用程序，并断言连接数永远不会超过 MAX_CONNECTIONS。您可以通过将 jconsole 或 VisualVM 附加到进程来检查后者。

您还可以考虑使用Jakarta JMeter在类/客户端上生成负载，然后绘制几个数据点（但不确定如何访问创建的客户端连接数）。

于 2009-07-07T18:30:18.750 回答
0

您可以通过更改参数来测试它

  • NO_OF_THREADS
  • POOL_SIZE
  • ENABLE_CONNECTION_POOLING
/** number of concurrent searches */
private static final int NO_OF_THREADS = 20;

/** size of the http connection pool */
private static final int POOL_SIZE = 20;

/** enabling or disabling the connection pool */
private static boolean ENABLE_CONNECTION_POOLING = true;

/** close idle connection time in milliseconds
 * connections will be release if they are idle for this time */
private static int CLOSE_IDLE_CONNECTION_TIME = 1000;

public void test()
{
    init();

    long start = System.currentTimeMillis();

    List<Thread> threads = new ArrayList<Thread>();
    for ( int i = 0; i < NO_OF_THREADS; i++ )
    {
        SimpleThread thread = new SimpleThread();
        thread.start();

        threads.add( thread );
    }

    for ( Thread t : threads )
    {
        try
        {
            t.join();
        }
        catch ( InterruptedException e )
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    logger.info( "************* Test Finish In *******************" + ( System.currentTimeMillis() - start ) + " ms" );
}

public void init()
{
    super.init();

    try
    {
        long t1 = System.currentTimeMillis();
        stub = new Viva_x0020_external_x0020_API_x0020_for_x0020_partnersStub( endUrl );

        if ( ENABLE_CONNECTION_POOLING )
        {
            stub._getServiceClient().getOptions().setProperty( HTTPConstants.REUSE_HTTP_CLIENT, Constants.VALUE_TRUE );
            MultiThreadedHttpConnectionManager connectionManager = new MultiThreadedHttpConnectionManager();
            connectionManager.getParams().setDefaultMaxConnectionsPerHost( POOL_SIZE );
            connectionManager.closeIdleConnections( CLOSE_IDLE_CONNECTION_TIME );
            HttpClient httpClient = new HttpClient( connectionManager );
            stub._getServiceClient().getOptions().setProperty( HTTPConstants.CACHED_HTTP_CLIENT, httpClient );
        }

        logger.info( "Connection Established in " + ( System.currentTimeMillis() - t1 ) + "ms" );
    }
    catch ( AxisFault e1 )
    {
        e1.printStackTrace();
        fail( "Error on creating the stub" );
    }

    logger.info( "Connection Initialized successfully" );
}

public class SimpleThread extends Thread
{
    public void run()
    {
        search();
    }
}

private static void search()
{
    logger.info( "$$$$$$$$$$$$$ Start the Search $$$$$$$$$$$$$$" );
    GetAirportConnections request = new GetAirportConnections();
    request.setAirportCode( "MTY" );

    GetAirportConnectionsResponse response = null;
    try
    {
        long t1 = System.currentTimeMillis();
        response = stub.getAirportConnections( request, getUserCredentials() );
        logger.info( "Results Retrived in " + ( System.currentTimeMillis() - t1 ) + "ms" );
    }
    catch ( Exception e )
    {
        logger.error( "------------------------- Connection Timeout --------------------------" );
        e.printStackTrace();
        fail( e.getMessage() );
    }

    Airport[] airports = response.getGetAirportConnectionsResult().getAirport();
    logger.info("Number of airports : " + airports.length );
}

}

于 2011-11-15T09:32:27.467 回答