kcola/core/lib/handleMiddleware.js

一个基于koa2，小而美的RESTful API+MVC的web开发框架！

const path = require('path');
const {traverseDir, existsSync} = require('../../utils');

module.exports = (opts, app, start) => {
  const filepath = path.join(global.__kcola_workdir, './middleware');
  if (existsSync(filepath)) {
    const filenames = traverseDir(filepath);
    const entryjs = filenames.filter((f) => f.lastIndexOf('index.js') > -1);
    const regex = new RegExp(path.sep, 'gi');
    entryjs.forEach((e, i) => {
      const dirname = path.dirname(e);
      const mwname = dirname.substring(dirname.lastIndexOf(path.sep)).replace(regex, '');
      console.log('middleware-', mwname);

      try {
        const mw = require(e)(opts[mwname]);
        if (typeof mw === 'function') {
          app.use(mw, start);
          start++;
        }
      } catch (err) {
        require(e)(app, opts[mwname]);
      }
    });
  }
};