express-profiler/index.js

用于express框架profiler

/**
 * Created by lv on 2017/6/6.
 */

'use strict';


var profiler = require('v8-profiler');

var fs=require('fs');

var moment=require('moment');

exports.profile=function (app,option) {
    app.use('/cpuProfiler',function (req,res,next) {
        var filePath=option.filepath;

        var fileName=moment(new Date()).format("YYYYMMDDHHmmss")+"profile.json";

        var fullPath=filePath+"/"+fileName;

        profiler.startProfiling(option.name, true);
        setTimeout(function () {
            var profile1 = profiler.stopProfiling();
            profile1.export(function(error, result) {
                fs.writeFileSync(fullPath, result);
                profile1.delete();
            });
        },option.timeout);
        res.status(200).send({
            'timeout':option.timeout,
            'filePath':fullPath
        });
    });
};