This application accepts the URL as input and shortens the URL and returns to the user. This application is implemented as docker image. Kindly follow below steps to setup and run the application. Apllication also checks if the provided url is already shortened, if so it returns the shortened URL. All te data is maintained in text file named url-data.json. Every time api request is recieved the it will be updated in data file.

1. Clone the repositiry
   git clone
2. Traverse insede url-shortner directory
   cd url_shortner
3. Build docker image
   docker build -t url_shortner:latest .
4. Once the image build is complete you can verify using below command
  docker images
  output:
  REPOSITORY                              TAG             IMAGE ID       CREATED         SIZE
  url_shortner                            latest          d772fc233276   2 minutes ago   449MB
5. Run docker container from image
  docker run -p 5000:5000 url-shortner:latest
  output:
  * Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
  * Restarting with stat
  * Debugger is active!
  * Debugger PIN: 247-353-832

Run below api from the machine where the container is running
curl http://0.0.0.0:5000/url_shortner/url=
Example: curl http://0.0.0.0:5000/url_shortner/url=google.com

Case1:
Description: if you just enter below URl it will describe what is this app and how to use
enter URL :  curl http://0.0.0.0:5000/
output:

+++++++++Welcome to free URL shortening service+++++++++
         please enter below api call to shorten your URL
         curl http://0.0.0.0:5000/url_shortner/url=google.com 

Case2:
Description: pass on some URL and it return shortened URL
enter URL :  curl http://0.0.0.0:5000/url_shortner/url=yahoo.com
output:

 http://0.0.0.0:5000/xjmb38

Case3:
Description: Re-enter the same URL
enter URL :  curl http://0.0.0.0:5000/url_shortner/url=yahoo.com
output:

URL alraedy exists, the shortned URL is http://0.0.0.0:5000/xjmb38

Case4:
Description: Error handling enter wrong url
enter url: curl http://0.0.0.0:5000/ur
output:

<title>404 Not Found</title>
Not Found

The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.