step 1. Technologies used in the making -Github(Node js) for the coding and data transformation -Heroku (mongodb) for the collection and storage of data -postman or google chrome browser for output purpose.
step 2. How to see the code - app.js is the main code file where all the coding reside. - As Heroku have the direct connection to the github platform we will deploy the app from here.
step 3. How to run the app - There are two ways to run the app either the web browser or postman app - web browser all you need to do in enter this web address ("https://mighty-depths-86733.herokuapp.com/BOM-YYZ") where BOM is the origin and the YYZ is the distination. output will be like {"shortestRoute":[{"_id":"5a3ab6687c59c84a43f9e848","airlineId":"TK","origin":"BOM","destination":"IST","distance":4823286}, {"_id":"5a3ab6687c59c84a43f9e961","airlineId":"TK","origin":"IST","destination":"KZR","distance":235408}, {"_id":"5a3ab6687c59c84a43f9e9d7","airlineId":"TK","origin":"KZR","destination":"YYZ","distance":235408}], "shortestDistance":5294102} also - we can use postman app in the GET Section enter this web address ("https://mighty-depths-86733.herokuapp.com/BOM-YYZ")and press SEND we can then see the output like { "shortestRoute": [ { "_id": "5a3ab6687c59c84a43f9e848", "airlineId": "TK", "origin": "BOM", "destination": "IST", "distance": 4823286 }, { "_id": "5a3ab6687c59c84a43f9e961", "airlineId": "TK", "origin": "IST", "destination": "KZR", "distance": 235408 }, { "_id": "5a3ab6687c59c84a43f9e9d7", "airlineId": "TK", "origin": "KZR", "destination": "YYZ", "distance": 235408 } ], "shortestDistance": 5294102 }
note: orgin and distination should always be in capital or exactly as it is in the data collections.