voter-app

This is a simplified version of example-voting-app written in go. This app lets you vote any number of times. This is not an example for properly architected app but created to show how containers can be utilized for multi-tier applications.

Architecture

Pre-requisite

Redis running in system as standalone or as container. Set environment variables accordingly while running app as standalone or as a container.

docker run -d -p 6379:6379 --name redis_voter redis:alpine

Build locally

From the location of clonned repo

make build-local

Set environment variables, update the values accordingly as per your redis setup

export VOTER_REDIS_ADDR="localhost:6379"
export VOTER_REDIS_DB=0
export VOTER_REDIS_PASSWORD=""

./voter-app

Build docker image

DATE=$(date +"%Y%m%d")
docker build . -t voter-app:$DATE

Run as container

Example shown below with both redis and voter app running as container. Note --link option where redis container address specified.

docker run -p 8080:8080 --env VOTER_REDIS_ADDR="redis_voter:6379" --link redis_voter --env VOTER_REDIS_PASSWORD="" --env VOTER_REDIS_DB=0 voter-app:$DATE

Go to http://localhost:8080 to access the application

Using docker-compose

This will build the image and setup the voter-app stack with come command.

docker-compose up

Go to http://localhost:8090 to access the application

Contributing

• Fork the project on GitHub
• Clone the project
• Add changes (and tests if applicable)
• Commit and push
• Create a pull request

TODO

• Add tests

License

Apache License