refactor: litmus-portal authentication server

[DarthBenro008]

Authentication Server Refactor

Part of #2483 and GSoC Project

This PR comprehends a full re-write of litmus-portal's golang authentication server.

The server has been developed keeping in mind that the litmus-portal frontend does not need to make any change in request/response.

Routes Included

Type of Request	Routes	Functionality	Authorisation Required
POST	/login	Logs in the user and generates JWT Token	No
GET	/users	Fetches all the users to be displayed	Yes
POST	/create	Allows admin to create a user	Yes (with admin role)
POST	/update/password	Update password of logged in user	Yes
POST	/reset/password	Allows admins to reset user's password	Yes (with admin role)
POST	/update/details	Allows user to update email and name	Yes

Dependencies Used

go 1.16
require (	
        github.com/dgrijalva/jwt-go v3.2.0+incompatible	
        github.com/gin-contrib/cors v1.3.1	
        github.com/gin-gonic/gin v1.7.2	
        github.com/sirupsen/logrus v1.4.2	
        go.mongodb.org/mongo-driver v1.5.3	
        golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a
)

• gin-gionic
• mongo-driver
• logrus
• jwt-go

Results

The current authentication server and the re-written server were deployed on Okteto and tested

Performance Gain

The current authentication server took 14 seconds for an average response

The re-written authentication server took 0.3 seconds for an average response

This is a boost in performance of almost 46 times meanwhile keeping the functionality and the security the same.

Easier Packaging of Code

The packages and folders have been completely simplified. Everything in the codebase has been decoupled for easier development and access.

Before:

After:

Try out

You can find this codebase deployed on https://litmusportal-production-frontend-service-darthbenro008.cloud.okteto.net/
Username: admin
Password: litmus

Alternatively, you can also deploy this codebase on your own Okteto Cluster by clicking here

ToDo

• Unit Testing and DB Mocking

[SarthakJain26]

Left few comments, PTAL

[DarthBenro008]

Hey @SarthakJain26 , Thank you for the comments. I have addressed/resolved the same.

[DarthBenro008]

@ishangupta-ds @SarthakJain26 @rajdas98 All the requested changes have been addressed and resolved 😃

[ishangupta-ds]

LGTM

[DarthBenro008]

@gdsoumya @rajdas98, the sample deployment of the codebase can be found at: https://litmusportal-production-frontend-service-darthbenro008.cloud.okteto.net

Username: admin
Password: litmus

Strict policy check has been enabled for this deployment and can be tested by changing credentials.