telnetappendertest.java

apache的log4j源码

/*
 * 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.log4j.net;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;

import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;

import junit.framework.TestCase;

public class TelnetAppenderTest extends TestCase {

  int port = 54353;
  ByteArrayOutputStream bo = new ByteArrayOutputStream();

  public class ReadThread extends Thread {
    public void run() {
      try {
        Socket s = new Socket("localhost", port);
        InputStream i = s.getInputStream();
        while (!Thread.interrupted()) {
          int c = i.read();
          if (c == -1)
            break;
          bo.write(c);
        }
        s.close();
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
  }

  public void testIt() throws Exception {
    int oldActive = Thread.activeCount();
    TelnetAppender ta = new TelnetAppender();
    ta.setName("ta");
    ta.setPort(port);
    ta.setLayout(new PatternLayout("%p - %m"));
    ta.activateOptions();
    Logger l = Logger.getLogger("x");
    l.addAppender(ta);
    Thread t = new ReadThread();
    t.start();
    Thread.sleep(200);
    l.info("hi");
    Thread.sleep(1000);
    ta.close();
    Thread.sleep(200);
    t.interrupt();
    t.join();
    String s = bo.toString();
    assertTrue(s.endsWith("INFO - hi"));
    assertEquals(oldActive, Thread.activeCount());
  }

}