/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2013, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.classic.net.server;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.io.ObjectOutputStream;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.net.mock.MockAppender;
import ch.qos.logback.classic.spi.ILoggingEvent;
import ch.qos.logback.classic.spi.LoggingEvent;
import ch.qos.logback.classic.spi.LoggingEventVO;
import ch.qos.logback.core.net.server.ServerSocketUtil;

/**
 * A functional test for {@link ServerSocketReceiver}.
 * <p>
 * In this test we create a SocketServer, connect to it over the local
 * network interface, and validate that it receives messages and delivers
 * them to its appender.
 */
public class ServerSocketReceiverFunctionalTest {

  private static final int EVENT_COUNT = 10;
  private static final int SHUTDOWN_DELAY = 10000;
  
  private MockAppender appender;
  private Logger logger;
  private ServerSocket serverSocket;
  private InstrumentedServerSocketReceiver receiver;
  private LoggerContext lc;
  
  @Before
  public void setUp() throws Exception {
    lc = new LoggerContext();
    
    appender = new MockAppender();
    appender.start();
   
    logger = lc.getLogger(getClass());
    logger.addAppender(appender);

    serverSocket = ServerSocketUtil.createServerSocket();
    
    receiver = new InstrumentedServerSocketReceiver(serverSocket);
        
    receiver.setContext(lc);
    receiver.start();
  }
  
  @After
  public void tearDown() throws Exception {
    receiver.stop();
    ExecutorService executor = lc.getExecutorService();
    executor.shutdownNow();
    executor.awaitTermination(SHUTDOWN_DELAY, TimeUnit.MILLISECONDS);
    assertTrue(executor.isTerminated());
  }
  
  @Test
  public void testLogEventFromClient() throws Exception {
    ILoggingEvent event = new LoggingEvent(logger.getName(), logger, 
        Level.DEBUG, "test message", null, new Object[0]);
    Socket socket = new Socket(InetAddress.getLocalHost(), 
        serverSocket.getLocalPort());
    
    try {      
      LoggingEventVO eventVO = LoggingEventVO.build(event);
      
      ObjectOutputStream oos = new ObjectOutputStream(socket.getOutputStream());
      for (int i = 0; i < EVENT_COUNT; i++) {
        oos.writeObject(eventVO);
      }

      oos.writeObject(eventVO);
      oos.flush();
    }
    finally {
      socket.close();
    }
    
    ILoggingEvent rcvdEvent = appender.awaitAppend(SHUTDOWN_DELAY);
    assertNotNull(rcvdEvent);
    assertEquals(event.getLoggerName(), rcvdEvent.getLoggerName());
    assertEquals(event.getLevel(), rcvdEvent.getLevel());
    assertEquals(event.getMessage(), rcvdEvent.getMessage());
  }

}
