ProcessOutputStream.java

package com.vip.saturn.job.shell;

import org.apache.commons.exec.LogOutputStream;

import com.vip.saturn.job.utils.LRUList;

/**
 * 封装子进程的输出信息
 * 
 * @author linzhaoming
 *
 */
public class ProcessOutputStream extends LogOutputStream {
	private static final int MAX_LINE = 100;

	/** 保存最近运行的100条记录 */
	//private LRUMap map = new LRUMap(MAX_LINE);
	LRUList<String> lruList = new LRUList<>(MAX_LINE);

	Object lock = new Object();
	
	public ProcessOutputStream(final int level) {
		super(level);
	}

	@Override
	protected void processLine(final String line, final int level) {
		synchronized(lock){
			lruList.put(line);
		}
	}

	/**
	 * @return 获取运行作业的日志 
	 */
	public String getJobLog() {
		StringBuilder sb = new StringBuilder();
		synchronized(lock){
			for (String line: lruList) {
				sb.append(line).append(System.lineSeparator());
			}
		}
		return sb.toString();
	}
}