Our Simple Architecture

This software was implemented to solve a very specific problem, return the tweets and status from two different urls. Both urls could return a json file if it works, otherwise it would give an error.

To solve this problem, I used Sinatra, because the client wanted to see data online. I didn't use Rails because the problem were very simple and it didn't require the whole Rails achiteture.

So I created two classes one for Sinatra server, Server class, and one for request data from the external server, RequestDataService class.

The Server class is responsible for serving two urls: http://localhost:3000/ and http://localhost:3000/ test_request. The first url return the data required in this problem and the second one is used to test if the RequestDataService class is working correctly.

The RequestDataService has a constructor and a method request_data. The constructor receive 2 parameters, the first one is the url and the second one is the number of times that the class will try to reach the url. The request_data method uses the url to get the data and try to parser the response. If the url have some error or the response is not a valid json, than it will try until the number of times specified on the constructor.

Another more robust Solution

This simple achiteture must solve the problem for a while. Another more robust architeture could be built using Rails, Sideqik and docker to integrate than. Maybe we could also use Redis if the external server take too long answer response.

Intial Setup

To setup the project, please run:

    bundle install 

Run the web server

To start the server, please run:

    bundle exec rackup -p 3000

After the server is running it is possible to use a browser or the command curl to access it at the url

    http://localhost:3000/ 

Run the tests

To run the tests, pelase make sure that the server is runing:

    bundle exec rackup -p 3000

Then run the comand

    rspec request_data_service_spec.rb