caesarjs/src/server/plugins/limit-requests-plugin.js

A microservice framework for node.js implementing client-server mutual certificate authentication

const PluginBuilder = require('../../plugin/plugin-builder');

module.exports = ( maxNumberOfRequests = 1000 ) => {

    const pluginBuilder = new PluginBuilder('max-number-of-request-plugin', 'Caesar.js max number of requests plugin', 'Caesar.js team', '0.0.1');

    pluginBuilder.addMiddleware((req, res, next) => {

        if(req.path.indexOf('/user-route/') != -1)
        {
            const count = req.statsDb.getTodayCount();
            if(count > maxNumberOfRequests)
            {
                let error = new Error('Maximum allowance has been exceeded for today.');
                error.status = 500;
                throw error;
            }

            req.statsDb.addDailyStatCount();
        }

        next();
    });

    return pluginBuilder.buildPlugin();
};