#Reactive v Shared State Concurrency: Inventory Mgmt w/ Scala/Play/Akka & MongoDB - Example Applications

###Getting Started

• Vagrantfile is in root of project
• Puppet provisioning is in puppet directory
• To get started:
• Install Homebrew
  • https://github.com/Homebrew/homebrew/blob/master/share/doc/homebrew/Installation.md#installation
• Install Ruby (Macs already have Ruby installed)
  • brew install ruby
• If you encounter permission issues, install RVM
  • https://github.com/rvm/rvm#installation
• Verify Ruby 2.2.1 is set
• Install Vagrant
  • http://docs.vagrantup.com/v2/installation/
• Install Vagrant Puppet-Install plugin
  • vagrant plugin install vagrant-puppet-install
• Install Vagrant Librarian-Puppet plugin (version 0.9.0)
  • vagrant plugin install vagrant-librarian-puppet --plugin-version 0.9.0
• Run vagrant up
• Once this is completed (will take a whiiiiile):
  • vagrant ssh
  • cd /vagrant (this is where our repo is mounted)
  • Now you can cd reactive-inventory or shared-state-inventory
  • Run sbt- sbt
  • You can run the various commands from within sbt- run, test, compile, clean, gen-idea (to generate idea project)

###Vagrant box

• Addressable via private network adapter at 192.168.44.22
• Ubuntu box
  • Base box- https://atlas.hashicorp.com/ubuntu/boxes/trusty64

###MongoDB for Persistence

• We are using MongoDB for our database for both apps
• Installed on our Ubuntu virtual machine via Puppet
• Puppet module- https://forge.puppetlabs.com/puppetlabs/mongodb
• Running on port 27017
• You can log into the mongo db by running mongo from inside the Vagrant box
• We are also using Embedded MongoDB for some of our tests
  • https://github.com/flapdoodle-oss/de.flapdoodle.embed.mongo

###StatsD/Graphite for Metrics

• We are using StatsD as an aggregator and Graphite as a metric data store and display vehicle
• StatsD- https://github.com/etsy/statsd
• Graphite- http://graphite.readthedocs.org/en/latest/
• These are installed as a Docker container
  • https://github.com/hopsoft/docker-graphite-statsd
• StatsD port is 8125
• Graphite web gui port is 80

###Load Testing

• We're using JMeter
• Instructions and Test Plan can be found in load_testing directory

###Useful Links

• sbt
  • http://www.scala-sbt.org/
• Reactive Mongo
  • Non-blocking Mongo driver
  • http://reactivemongo.org/
• Akka
  • Actor framework
  • http://akka.io/
• Play framework
  • Web framework built on Akka
  • https://www.playframework.com/
• TrieMap
  • http://www.scala-lang.org/api/2.11.4/index.html#scala.collection.concurrent.TrieMap
  • http://lampwww.epfl.ch/~prokopec/ctries-snapshot.pdf
• HBC Digital on Twitter
  • Dynamic, cutting edge technology company with empowered engineers
  • https://twitter.com/hbcdigital
• Dana Peele
  • Application developer
  • https://twitter.com/Dana_S_Peele