memorypersistencelogobserver.java.svn-base

监控整个SP系统的SMS信息通道的发送情况并且生成日志。 支持权限判断。

package com.infobank.superchannel.observer.implementation;

import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;

import com.infobank.superchannel.observer.ChannelStatusObserver;
import com.infobank.superchannel.observer.LogObserver;
import com.infobank.superchannel.pojo.ChannelInfo;
import com.infobank.superchannel.pojo.GenericLog;
import com.infobank.superchannel.pojo.TextMessage;
import com.infobank.superchannel.pojo.TextMessageLog;
import com.infobank.superchannel.daemon.GenericDaemon;
import com.infobank.superchannel.daemon.databasecache.DatabaseCacheDaemon;
import com.infobank.superchannel.daemon.messagelauncher.MessageLauncherDaemon;
import com.infobank.superchannel.util.DaemonConfiguration;

/**
 * @author Xiaoguang Sun
 * @version 类说明: MemoryPersistenceLog观察者
 */
public class MemoryPersistenceLogObserver implements LogObserver {
  private static int maximumLogSize=100; 
  private List<GenericLog> genericLog=new LinkedList<GenericLog>();
  private Object genericLogMutex=new Object();
    private static String daemonType=null;

    public static void init(GenericDaemon daemon){
      if(daemon instanceof DatabaseCacheDaemon){
        daemonType="DatabaseCache";
      }
      else{
        if(daemon instanceof MessageLauncherDaemon){
          daemonType="MessageLauncher";
        }
        else
          throw new RuntimeException("invalid daemon type");
      }

      DaemonConfiguration config=DaemonConfiguration.getInstance();

      StringBuilder sb=new StringBuilder();
      sb.append("/daemon[@type='");
      sb.append(daemonType);
      sb.append("']/observer[@type='LogObserver']/");
      String basePath=sb.toString();

      sb=new StringBuilder();
      sb.append(basePath);
      sb.append("capacity[@persistence='Memory']/genericLog");
      maximumLogSize=config.getInt(sb.toString());
    }

  private void checkListSize(List list,int maxsize){
    int listSize=list.size();
    if(listSize>=maxsize){
      list.remove(0);
    }
  }
  
  /**
   *  取得自上次调用此方发以后新增的所有日志信息
   * @return 自上次调用此方发以后新增的所有日志信息
   */
  public List<GenericLog> getGenericLog(){
    List<GenericLog> log=null;
    synchronized(genericLogMutex){
      log=genericLog;
      genericLog=new LinkedList<GenericLog>();
    }
    return log;
  }
  
  /**
   * helper method for logging methods
   * @param log log information
   * @param level log level
   */
  private void log(String log,GenericLog.LogLevel level){
    synchronized(genericLogMutex){
      checkListSize(genericLog,maximumLogSize);
      genericLog.add(new GenericLog(log,level));
    }
  }

  /**
   * helper method for logging exception methods
   * @param ex exception
   * @param level log level
   */
  private void log(Exception ex,GenericLog.LogLevel level){
    synchronized(genericLogMutex){
      checkListSize(genericLog,maximumLogSize);
      ByteArrayOutputStream os=new ByteArrayOutputStream();
      ex.printStackTrace(new PrintStream(os));
      genericLog.add(new GenericLog(os.toString(),level));
    }
  }

  /**
   *  记载调试日志信息
   * @param log 调试日志信息
   */
  public void debug(String log) {
    log(log,GenericLog.LogLevel.DEBUG);
  }

  /**
   *  记载错误信息
   * @param log 错误信息
   */
  public void error(String log) {
    log(log,GenericLog.LogLevel.ERROR);
  }

  /**
   *  记载致命错误信息
   * @param log 致命错误信息
   */
  public void fatal(String log) {
    log(log,GenericLog.LogLevel.FATAL);
  }

  /**
   *  记载一般日志信息
   * @param log 一般日志信息
   */
  public void info(String log) {
    log(log,GenericLog.LogLevel.INFO);
  }

  public void warn(String log) {
    log(log,GenericLog.LogLevel.WARN);
  }

  public void debug(Exception ex) {
    log(ex,GenericLog.LogLevel.DEBUG);
  }

  public void error(Exception ex) {
    log(ex,GenericLog.LogLevel.ERROR);
  }

  public void fatal(Exception ex) {
    log(ex,GenericLog.LogLevel.FATAL);
  }

  public void info(Exception ex) {
    log(ex,GenericLog.LogLevel.INFO);
  }

  public void warn(Exception ex) {
    log(ex,GenericLog.LogLevel.WARN);
  }
}