The idea behind this application is that we're going to spin a wheel with a sensor attached to it. The sensor will relay clicks (most basic form of data) to a REST endpoint.

The REST API will be faced with a facade for counting purposes. The facade is transparent and relays the REST calls through to a back end consisting of several "cattlestore." The cattlestore app is doomed because after a specific number of requests it can't take it anymore and exits.

There is a herder that finds the running instances in Marathon, gets the number of requests served so far and pushes this information out through a websocket. Marathon and Mesos are part of Mantl.

This app will consist of 5 parts, running on Mantl.io.

The parts are

• A facade, currently a Traefik container;
• The cattle store app in this repo, this is the thing that will be scaled up and down, currently a golang app;
• The "herder," which will monitor the cattle store apps;
• A front end application that gets its information from Marathon;
• minimesos, using the traefik branch;
• A hardware tick counter, that counts the revolutions of a wheel or the clicks on a wheel of fortune, and relays each click to the /tick REST endpoint on the server.

##Current state The /infra subdir in the herder repo has a number of scripts that aid in setting up the parts.

Start by checking out the traefik branch of minimesos and building it.

git clone, etc
git checkout, etc
./gradlew build -x test
bin/minimesos

Now get the infra scripts and start Traefik, the herder and a number of cattle store instances

docker-compose up -d
./load.sh

This should do it.

OSX's Homebrew's go does not come with cross compilation support by default. (Re)install go using:

brew reinstall go --with-cc-common

This will enable cross compilation.