gaiaminterface/Lib/log.js

var fs = require('fs');
var buffersize = 30000;

exports.init = function(){
    var logfile="GaiamLog.log";
    if(logfile){
        var buffer = new Buffer(buffersize);
        var fd = fs.openSync(logfile,'a');
    }
    function writeLog(type,logmsg){
        var log = {type:type,msg:logmsg,time:getTime()};
        console.log(formatLogMsg(log));
        fs.writeSync(fd,formatLogMsg(log),0,0,null);
    }
    return {
        log: function(type,logmsg){writeLog(type,logmsg)}
    };
}
//格式化日志内容
function formatLogMsg(log){
    return ["日志时间:"+log.time+"  日志出处-类型:"+log.type+"  信息:"+log.msg] + "\r\n";
}

function getTime() {
    var t = new Date();
    return [t.getFullYear(), '-', add0(t.getMonth() + 1) , '-', add0(t.getDate()), ' ',
        add0(t.getHours()), ':', add0(t.getMinutes()), ':', add0(t.getSeconds())].join('');
}

function add0(num) {
    return num > 9 ? num : '0' + num;
}