Fitness-dsl

This project consists of 2 components.

• Computation component - This is a DSL built using the ANTLR4 framework which helps in building of a fitness application. Many fitness applications currently being built follow a similar piece of logic. This project aims to make that easy and fluent.
• Web-service component - Exposes the DSL as a service using REST HTTP framework.

Pre-requisites

Following tools are needed to build this project

• Git CLI
• Java8
• Maven 3.x+
• Docker (if you want to run it in a container)

Building and running locally.

• Clone the repo

git clone https://github.com/venki09/fitness-dsl.git

• Navigate to the directory and run the maven build

cd fitness-dsl
mvn clean install

• Once the build succeeds, run the tomcat server locally

cd service
mvn tomcat7:run

• Now you can navigate to the browser and hit the following endpoints

# Nutrition command
localhost:8080/fitness-service/nutrition_info?food=<apple or orange>

# Exercise command
localhost:8080/fitness-service/exercise_info?distance=<distance>&unit=<miles or kilometers>&time=<time>&exercise=<ran or cycled or swam>

Alternatively, you could also deploy your WAR in a tomcat server and run it.

Running as a docker container

• Build the docker image using the command

cd service
mvn docker:build # This will build the docker image
docker run -p 8080:8080 fitness-service # Spins up a container from the image being built in the previous step

Pushing image to a docker registry

• Follow steps in https://docs.docker.com/docker-cloud/builds/push-images/

Running the service in docker on an EC2 instance

• Create an EC2 instance.
• SSH into it.
• Install docker using sudo yum install docker.
• Start the docker daemon using sudo service docker start.
• Pull down the docker image.
• Run the docker image using.

docker run -p 8080:8080 <image_id> &

• Edit the security group to allow TCP to connect through 8080.
• Hit the service endpoints!