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app.js
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app.js
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var koa = require('koa.io');
var _ = require('lodash');
var util = require('util');
var path = require('path');
var swig = require('swig');
var koaBody = require('koa-body');
// redis 方案
// var session = require('koa-generic-session');
// var redisStore = require('koa-redis');
// redis 方案
var session = require('koa-session');
var minifier = require('koa-html-minifier');
var assets = require('koa-static-cache');
var config = require('./config');
var request = require('request');
var support = require('./support');
var service = require('./modules/common/service');
var compose = require('koa-compose');
var config = require('./config');
var sign = require('./support/sign');
var fs = require('fs');
var path = require('path');
var _ = require('lodash');
var cluster = require('cluster');
var cpus = require('os').cpus();
var logger = require('./support/logger');
// 加载swig过滤器
require('./config/filter');
var app = module.exports = koa();
// 访问静态资源 版本号防缓存
app.use(compose([
function*(next) {
if (this.path.indexOf('/static/') === 0) {
this.path = this.path.replace(/.v.[\d\w]+/i, '');
}
yield * next;
},
assets(config.static, {
maxAge: 365 * 24 * 60 * 60,
gzip: true,
prefix: '/static'
})
]));
// 设置秘钥
app.keys = ['LWXA@0ZrXj~!]/mNHH98j/3yX R,?RT'];
app.use(session(app, {
key: 'H',
maxage: 365 * 24 * 60 * 60 * 1000 // 一年过期
}));
// 基于redis
// 会话
// var sessionGen = session({
// key: 'T',
// ttl: 2 * 60 * 60 * 1000, // 2小时缓存
// store: redisStore({
// host: config.redis.host,
// port: config.redis.port,
// }),
// cookie: {
// maxage: 365 * 24 * 60 * 60 * 1000
// }
// });
// // 设置SESSION
// app.use(sessionGen);
// 去除HTML页面中的换行和空白
app.use(minifier({
minifyJS: true,
minifyCSS: true,
collapseWhitespace: true,
keepClosingSlash: true,
removeComments: true,
processScripts: ['text/swig-template']
}));
// 微信授权
global.wxRequired = function(app) {
var url = config.domain + app.req.url;
return function*(next) {
var makeTime = function() {
return parseInt(new Date().getTime() / 1000);
}
var accessToken = {};
if ((!global.accessToken) || (!!global.accessToken && global.accessToken.expire_time < makeTime())) {
if (!global.accessToken) {
}
if (!!global.accessToken && global.accessToken.expire_time < makeTime()) {
}
accessToken = yield service.accessToken();
var access_token = {
expire_time: makeTime() + 7200,
access_token: accessToken.access_token
};
accessToken = yield access_token;
global.accessToken = accessToken;
} else {
accessToken = global.accessToken;
}
yield accessToken;
var getJsApiTicket = {};
if ((!global.jsapiTicket) || (!!global.jsapiTicket && global.jsapiTicket.expire_time < makeTime())) {
if (!global.jsapiTicket) {
}
if (!!global.jsapiTicket && global.jsapiTicket.expire_time < makeTime()) {
}
getJsApiTicket = yield service.ticket(accessToken.access_token);
var jsapi_ticket = {
expire_time: makeTime() + 7200,
jsapi_ticket: getJsApiTicket.ticket
};
getJsApiTicket = yield jsapi_ticket;
global.jsapiTicket = getJsApiTicket;
} else {
getJsApiTicket = global.jsapiTicket;
}
yield getJsApiTicket;
var signature = sign(getJsApiTicket.jsapi_ticket, url);
signature.appid = config.wxconfig.appid;
signature = yield signature;
return signature;
};
};
// 解析form
app.use(koaBody({
strict: false,
multipart: true,
formidable: {
uploadDir: path.join(__dirname, '../upload')
}
}));
// 判断是否是内嵌浏览器
app.use(function*(next) {
var userAgent = (this.headers['user-agent'] || '').toLowerCase();
// 客户端判断
this.ua = {
ios: userAgent.indexOf('mobile/') !== -1 && userAgent.indexOf('safari/') === -1,
android: (this.headers['x-requested-with'] || '').indexOf('qding') !== -1,
weixin: userAgent.indexOf('micromessenger') !== -1,
ali: userAgent.indexOf('ali') !== -1
};
// 是否是APP
this.ua.app = !this.ua.weixin && !this.ua.ali && (this.ua.ios || this.ua.android);
// 是否是Ajax
this.request.isAjax = this.headers['x-requested-with'] === 'XMLHttpRequest';
yield next;
});
// 设置模板引擎
app.use(function*(next) {
this.render = function(name) {
// 构造数据
var data = {};
// 字符串处理
if (_.isString(arguments[1])) {
data.message = arguments[1];
}
// 合并数据
else {
_.merge.apply(_, [data].concat(Array.prototype.splice.call(arguments, 1)));
}
// 返回接口
if (_.isNumber(name)) {
return {
code: name,
data: data
}
}
// 返回页面
if (/^[^./]/i.test(name)) {
var folder = path.dirname(support.callsite()[1].getFileName());
name = path.resolve(folder, name);
}
// 添加UA数据
data = _.merge(data, {
ua: this.ua,
nested: this.ua.ios || this.ua.android || this.ua.weixin,
});
return swig.renderFile(name, data);
};
yield next;
});
// 全局错误处理
app.use(function*(next) {
var error = null;
try {
logger.info('Request:', {
url: this.request.url,
ip: this.request.headers['x-real-ip'],
});
yield * next;
} catch (e) {
error = e;
this.status = e.status || 500;
} finally {
this.status = this.status === 405 ? 404 : this.status;
if (this.status !== 200) {
// 打印400及以上的错误日志
if (this.status >= 400 || error) {
logger.error(error || this.status, {
url: this.request.url,
ip: this.request.headers['x-real-ip'],
});
}
if (this.status === 404 || error) {
var mime = this.accepts(['json', 'html']);
if (mime === 'json') {
this.body = this.render(this.status, this.status === 404 ? '抱歉,服务未找到' : '服务器异常,请稍后再试');
this.status = 200;
} else {
this.body = this.render(this.status === 404 ? config.errPage[404] : config.errPage[500]);
}
} else if (this.status === 403) {
this.body = this.render(config.errPage[403]);
}
}
}
});
// 遍历目录加载路由模块
support.walk(__dirname).forEach(function(path) {
if (/\broutes\.js$/.test([path])) {
var router = require(path);
app.use(router.routes());
app.use(router.allowedMethods());
}
});
//app.io.use();
// 启动服务器
if (cluster.isMaster) {
for (var i = 0; i < cpus.length; i++) {
cluster.fork();
}
} else {
app.listen(config.port, function() {
console.log('clustor worker %d started, pid is %d, listening on port: %d', cluster.worker.id, process.pid, config.port);
});
}