MD5 Calculator

Source code for a MD5 calculator application.

A simple web application calculates a MD5 Hash code of a file located on the Internet.

This application accepts two requests:

1. POST request on /submit has a URL parameter (the address of a file). It creates a task that is responsible for the md5 hash code calculation, gives back the ID of the task and starts calculating the hash code as a background process.
2. GET request on /check/task_id provides a user with the information of the task: only status if the process is still running or the md5 hash code itself if the calculation has already been finished.

Building an application locally

1. Make sure you have MongoDB database running either locally or remotely. MongoDB installation process
2. Create an environmental variable DB_CONNECTION_STRING and assign it to an url of your MongoDB database. For example: mongodb://localhost/md5
3. Run make in a command line in a working directory.
4. Start "playing" with the application.

How to use:

$ curl -X POST -d "url=http://site.com/file.txt" http://localhost:8080/submit

{"id":"5cfbb4561b699b0e9a633fe3"}

$ curl -X GET http://localhost:8080/check/5cfbb4561b699b0e9a633fe3

{"id":"5cfbb4561b699b0e9a633fe3", "status":"running"}

$ curl -X GET http://localhost:8080/check/5cfbb4561b699b0e9a633fe3

{"id":"5cfbb4561b699b0e9a633fe3", "status":"done", "md5":"74454cfc8f400c7d32a70d1f1eda6ce8", "url":"http://site.com/file.txt"}