a JAlgoArena API is API Gateway service for all backend JAlgoArena services. It's created based on Netflix Zuul with usage of Spring Boot and Spring Cloud.

• Introduction
• Components
• Continuous Delivery
• Infrastructure
• [Running Locally] (#running-locally)
• Notes

• API Gateway is the single point forwarding to destination service. It's using Eureka for identifying url/addresses of the services just based on their names. Additionally - it has configured client load balancer (Netflix Ribbon) - which load balance requests - it's mainly used in JAlgoArena for many Judge Agents - as they are stateless services and considerably slowest part of JAlgoArena infrastructure.

• JAlgoArena
• JAlgoArena UI

• initially, developer push his changes to GitHub
• in next stage, GitHub notifies Travis CI about changes
• Travis CI runs whole continuous integration flow, running compilation, tests and generating reports
• application is deployed into Heroku machine

• Heroku (PaaS)
• Spring Boot, Spring Cloud
• Netflix Zuul (api gateway), Ribbon (load balancer), Hystrix (circut breaker)
• TravisCI - https://travis-ci.org/spolnik/JAlgoArena-API

There are two ways to run it - from sources or from binaries.

• Default port: 5001

• go to releases page and download last app package (JAlgoArena-API-[version_number].zip)
• after unpacking it, go to folder and run ./run.sh (to make it runnable, invoke command chmod +x run.sh)
• you can modify port and Eureka service url in run.sh script, depending on your infrastructure settings. The script itself can be found in here: run.sh

• run git clone https://github.com/spolnik/JAlgoArena-API to clone locally the sources
• now, you can build project with command ./gradlew clean bootRepackage which will create runnable jar package with app sources. Next, run java -Dserver.port=5001 -jar build\libs\jalgoarena-api-*.jar which will start application
• there is second way to run app with gradle. Instead of running above, you can just run ./gradlew clean bootRun

• Travis Builds