LoggerThread.java

package org.voovan.tools.log;

import org.voovan.tools.TEnv;

import java.io.IOException;
import java.io.OutputStream;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

/**
 * 日志输出线程
 * 
 * @author helyho
 *
 * Voovan Framework.
 * WebSite: https://github.com/helyho/Voovan
 * Licence: Apache v2 License
 */
public class LoggerThread implements Runnable {
	private ArrayBlockingQueue<String>	logQueue;
	private OutputStream[] outputStreams;
	private AtomicBoolean finished = new AtomicBoolean(true);

	/**
	 * 构造函数
	 * @param outputStreams 输出流数组
	 */
	public LoggerThread(OutputStream[] outputStreams) {
		this.logQueue = new ArrayBlockingQueue<String>(100000);
		this.outputStreams = outputStreams;
	}
	
	public boolean isFinished() {
		return finished.get();
	}

	/**
	 * 获取日志输出流集合
	 * @return 输出流数组
	 */
	public OutputStream[] getOutputStreams() {
		return outputStreams;
	}

	/**
	 * 设置日志输出流集合
	 * @param outputStreams 输出流数组
	 */
	public void setOutputStreams(OutputStream[] outputStreams) {
        this.outputStreams = outputStreams;
	}

	/**
	 * 关闭所有的OutputStream
	 */
	public void closeAllOutputStreams() {
		try {
			for (OutputStream outputStream : outputStreams) {
				if (outputStream != null) {
					outputStream.close();
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	/**
	 * 增加消息
	 *
	 * @param msg 消息字符串
     */
	public void addLogMessage(String msg) {
		logQueue.add(msg);
	}

	@Override
	public void run() {
		String formatedMessage = null;

		finished.set(false);

		Thread mainThread = TEnv.getMainThread();
		try {
            while (true) {
                    formatedMessage = logQueue.poll(1000, TimeUnit.MILLISECONDS);
                    if (formatedMessage != null && outputStreams!=null) {
                        for (OutputStream outputStream : outputStreams) {
                            if (outputStream != null) {
                                outputStream.write(formatedMessage.getBytes());
                                outputStream.flush();
                            }
                        }
                    }
                    //如果主线程结束,则日志线程也退出
                    if(mainThread!=null && mainThread.getState() == Thread.State.TERMINATED){
                        break;
                    }

                    if(mainThread == null){
                        break;
                    }
            }

            finished.set(true);

		} catch (IOException | InterruptedException e) {
			e.printStackTrace();
		} finally {
			try {
                for (OutputStream outputStream : outputStreams) {
                    if (outputStream != null) {
                        outputStream.close();
                    }
                }
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

	}
	
	/**
	 * 获取 Web 访问日志记录对象
	 * @param outputStreams 输出流数组
	 * @return 日志记录线程对象
	 */
	public static LoggerThread start(OutputStream[] outputStreams) {
		LoggerThread loggerThread = new LoggerThread(outputStreams);
		Thread loggerMainThread = new Thread(loggerThread,"VOOVAN@Logger_Thread");
		loggerMainThread.start();
		return loggerThread;
	}
	
}