NodeJS-MVC/system/core.js

/**
 * @Author  HonorLee (deve@honorlee.me)
 * @Version 1.0 (2018-05-04)
 * @License MIT
 */
'use strict';
global.Core  = {};
global.CACHE = {};

//Global Path
global.Core.Path = {
    System      : ROOTPATH + '/system',
    CoreLib     : ROOTPATH + '/system/lib/core',
    ExtraLib    : ROOTPATH + '/system/lib/extra',
    Helper      : ROOTPATH + '/system/lib/helper',
    Work        : ROOTPATH + '/app',
    Module      : ROOTPATH + '/app/modules',
    Handler     : ROOTPATH + '/app/handlers',
    View        : ROOTPATH + '/app/view',
    Temp        : ROOTPATH + '/temp',
    Session     : ROOTPATH + '/temp/session',
    Log         : ROOTPATH + '/log',
    Asset       : ROOTPATH + '/' + Config.Asset.asset_path,
    Upload      : ROOTPATH + '/' + Config.Asset.upload_path
};

//Global Extension Require 
global.Moment       = require('moment-range').extendMoment(require('moment'));
global.URL          = require('url');
global.FILE         = require('fs-extra');
global.EJS          = require('ejs');
global.ASYNC        = require('async');
global.Base64       = require('js-base64');
global.MD5          = require('md5');
global.Formidable   = require('formidable');
global.MIME         = require('mime-types');
global.Path         = require('path');
global.Tracer       = require('tracer').dailyfile({root:Core.Path.Log,format : "{{timestamp}} <{{title}}> {{file}}:{{line}} {{message}}", dateformat : "HH:MM:ss.L"});

String.random       = require('string-random');
Core.Request        = require('request');
FILE.walkSync       = require('klaw-sync');

//System Library load
let CoreLibFiles = FILE.readdirSync(Core.Path.CoreLib);
CoreLibFiles.forEach(function(filename){
    let nameWithOutMimeType = (filename.split('.')[0]).toUpperCase();
    let coreClass;
    try {
        coreClass = require(Core.Path.CoreLib + '/' + filename);
        
    }catch(e){
        console.log('[Core] Core library file ['+filename+'] load error!');
        console.log(e);
        Tracer.error('[Core] Core library file ['+filename+'] load error!');
    }
    if(coreClass.hasOwnProperty('_name') && coreClass['_name']){
        global[coreClass['_name']] = coreClass;
    }else{
        global[nameWithOutMimeType] = coreClass;
    }
    if(typeof coreClass == 'object' && coreClass.hasOwnProperty('__construct')) coreClass['__construct']();
});
CoreLibFiles = null;
//System Library load end


//Core Setting,just change it if necessary!
global.Core.Setting = {};

//If Mysql on,load Mysql Extension
if(Config && Config.Database.Mysql.on){
    let MysqlPool    = require(Core.Path.ExtraLib + '/mysql-pool.js').instance(Config.Database.Mysql);
    let testMysqlCon = MysqlPool.getConnection(function(err,connection){
        connection.release();
        if(!err){
            connection.query('SELECT VERSION() as version',function(err,result,fields){
                if(err){
                    LOGGER.error('Mysql Connect error,please recheck your config');
                    LOGGER.error(err);
                }else{
                    LOGGER.info('Mysql Connect success');
                    LOGGER.info('Mysql Version: ' + result[0]['version'] + ' | User: ' + Config.Database.Mysql.user + ' | Database: ' + Config.Database.Mysql.database);
                    global.MysqlPool = MysqlPool;
                    global.MysqlDB   = require(Core.Path.Helper + '/mysqldb.js');
                }
            });
        }
    });
    
}

//If Mongodb on,load Mongodb Extension
if(Config && Config.Database.Mongodb.on && Config.Database.Mongodb.database){
    let verify = Config.Database.Mongodb.user?Config.Database.Mongodb.user+':'+Config.Database.Mongodb.password+'@':'';
    let mongoConnect = 'mongodb://' + verify + Config.Database.Mongodb.host+':'+Config.Database.Mongodb.port+'/'+Config.Database.Mongodb.database;
    require('mongodb').MongoClient.connect(mongoConnect,function(err,db){
        if(err) {
            LOGGER.error('MongoDB connect error!',true);
            LOGGER.error('Server start failed. Log has been saved!');
            // Logger.out(err);
            return;
        }
        LOGGER.info('Mongodb Connect success');
        global.MongoDB = {db:db};
        global.MG = function(collection){
            if(!collection) return null;
            return MongoDB.db.collection(Config.Database.Mongodb.prefix+collection);
        };
    });
}

//If Memcache on,load Memcache Extension
if(Config && Config.Database.Memcache.on){
    let Memclass  = require('memcached');
    let Memcache  = new Memclass(Config.Database.Memcache.host+':'+Config.Database.Memcache.port);
    Memcache.version(function(err,data){
        if(err){
            LOGGER.error('Memcache Connect error,please recheck your config');
            LOGGER.error(err);
        }else{
            LOGGER.info('Memcache Connect success');
            LOGGER.info('Memcache Version: ' + data[0]['version']);
            global.Memcache = Memcache;
        }
    });
}

//Check File Paths
for(let path in global.Core.Path){
    try{
        FILE.statSync(global.Core.Path[path]);
    }catch(e){
        FILE.mkdirsSync(global.Core.Path[path]);
    }
}

if(Config && Config.Wechat.on){
    global.Wechat = require(Core.Path.ExtraLib + '/wechat/wechat.js');
    try{
        FILE.statSync(Core.Path.Handler + Config.Wechat.handler_path +'/index.js');
    }catch(e){
        FILE.copy(Core.Path.ExtraLib + '/wechat/handler/wechat.js',Core.Path.Handler + Config.Wechat.handler_path +'/index.js')
    }
}

let HandlerFiles = FILE.walkSync(Core.Path.Handler, {nodir: true});
CACHE.Handlers = [];
for(let i in HandlerFiles){
    let path = HandlerFiles[i]['path'];
    CACHE.Handlers.push(path.replace(Core.Path.Handler,''));
}
CACHE.HandlersString = CACHE.Handlers.join('|');