Dockerizing-a-Flask-Server

A Flask Server for CRUD operations to a database on MongoDB Atlas. Finally, dockerizing this application.

First create Cluster, Database and a Collection on MongoDB Atlas:

• Upload a JSON file on the database if you have any

Deploy the docker container:

• All one needs is Docker installed and a Docker file
• In the repo, 'Dockerfile' is the file to build the image
• To build the image:

  $ docker build .

• Tag this image:

  $ docker tag <imageID> flaskimage

• Now start a container using this image:

  $ docker run -dit --name flaskserver -p 5055:5055 flaskimage

• Since port 5055 has been exposed, the flask server will be accessible via localhost:5055

Access API on the localhost:

• Start the flask server: (Note : This is the screenshot of the flask server running in the host machine)

• Browse this address 'https://localhost:5055/' , this will return Status:UP as response if you're using my code

• For GET, PUT requests one can use Postman to check the connection. Here are the sceenshots of Postman while running my flask server:

• A GUI can be deployed alongwith the server, it'll be a form to interact with the database through REST API

Use this API to do CRUD operations (Using Postman):

• To Read:

  {
    "database": "greendeck",
    "collection": "records",
  }

• To Create:

  {
    "database": "greendeck",
    "collection": "records",
    "Document": {
                  "name": "Jellycat Blossom Tulip Bunny Grabber, Pink",  
                  "brand_name": "jellycat", 
                  "regular_price_value": 12.0, 
                  "offer_price_value": 12.0, 
                  "currency": "GBP", 
                  "classification_l1": "baby & child", 
                  "classification_l2": "soft toys", 
                  "classification_l3": "", 
                  "classification_l4": "", 
                  "image_url": "https://johnlewis.scene7.com/is/image/JohnLewis/237070760?"
                  }
   }

• To Update:

  {
   "database": "greendeck",
   "collection": "records",
   "Filter": {
               "name": "Jellycat Blossom Tulip Bunny Grabber, Pink"
             },
   "NewValues": {
                  "brand_name": "jellydog",
                  "regular_price_value": 14.0
                }
  }

• To Delete:

  {
   "database": "greendeck",
   "collection": "records",
   "Filter": {
               "name": "Jellycat Blossom Tulip Bunny Grabber, Pink"
             }
  }

Important:

• I am using docker in Ubuntu running inside WSL2 on Windows machine. Because of this I was facing some issue to connect to the internet.

• Error I am getting

• I have found the issue, it's happening because WSL gives dynamic DNS nameservers and it gets copied in the containers. I changed the same to Google's. But, later found out that the same needs to be done in the Ubuntu as well. I am sure the ones aren't using WSL won't get any errors. But if anyone does, start a issue thread.