vote

simple voting app

Introduction

Docker compose will start the following servers:

1. Redis server for storing candidate : vote KV entries
2. GoLang Http vote server that provides voter registration, voting, and current candiate vote results

• /help (prints the available http endpoints)
• /register POST request body like: {"username":"[email protected]", "password":"dummy"} (returns a JWT Token)
• /voteui GET
  • An http form requires the following fields
    • jwt is the JWT Token associated with the voter who is casting his vote
    • candidate is one of the candidates to vote for
    • vote is a submit button - a user specified by email may only cast one vote
• /vote GET
  • A JSON response with the current tallied votes for each candidate will be returned
• /vote/{candidate} POST Header contains JWT token like "authorization: jwt xxx.yyy.zzz"
  • candidate is one of the following
    • "JoeBiden",
    • "BetoORourke",
    • "BernieSanders",
    • "ElizabethWarren",
    • "KamalaHarris",
    • "DonaldTrump"

Building

make build

Running the servers

make run

Example client requests

• curl -X GET http://localhost:8000/vote
  • {"BernieSanders":"1","BetoORourke":"0","DonaldTrump":"0","ElizabethWarren":"0","JoeBiden":"0","KamalaHarris":"0"}
• curl -X POST -d @cred.json http://localhost:8000/register
  • {"token":"eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJwYXNzd29yZCI6ImR1bW15IiwidXNlcm5hbWUiOiJyaWNoYXJkIn0.N4Z9B9GUOUGZvWJSf2qRg9bNBRNWZDiBwmjhTDpndLI"}
• curl -X POST --header "authorization: jwt eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJwYXNzd29yZCI6ImR1bW15IiwidXNlcm5hbWUiOiJyaWNoYXJkIn0.N4Z9B9GUOUGZvWJSf2qRg9bNBRNWZDiBwmjhTDpndLI" -v http://localhost:8000/vote/BernieSanders
• curl http://localhost:8000/help
  • POST /register Body like: {'username': '[email protected]', 'password': 'yyy'} (returns a JWT token)
  • POST /vote/{candidate} Heder like: 'authorization: jwt xxx.yyy.zzz' (one vote per user!)
  • GET /vote (shows current votes per candidate)

Limitations

• Hardening of JWT shared secret
• Hardening of Redis credentials
• The candidates are hard coded in vote.go. Consider adding an endpoint to define a Ballot listing the candidates
• Therer are two voting http endpoints (CLI vs UI). Normalize
• Better logging https://github.com/sirupsen/logrus