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Nagini

Nagini is a snake who battles at: http://battlesnake.io

Getting Started

To start your Phoenix server:

  • Install dependencies with mix deps.get
  • Set up the event store with mix do event_store.create, event_store.init
  • Start Phoenix endpoint with mix phx.server

Now you can use localhost:4000 as a Battlesnake endpoint.

The logger is configured to log at the debug level (very verbose) and logs are stored in /tmp/nagini.log. This is a workaround for Nanobox stdout log streaming being broken.

To start your Ember admin frontend:

  • Change to the frontend directory with cd admin
  • Install dependencies with npm install
  • Start Ember with ./node_modules/.bin/ember serve

Now you can view localhost:4200/admin/

Configuration

To customize your snake, set these environment variables:

  • SNAKE_COLOR
  • SNAKE_HEAD
  • SNAKE_TAIL

To tune the solver, set these environment variables:

  • SOLVER_TIMEOUT=infinity
  • SOLVER_DEPTH=0

Development with Nanobox

  • Install Docker
  • Install Nanobox CLI and log in
  • nanobox dns add local nagini.local
  • nanobox run
  • Install dependencies and run start commands as normal

Note that Nanobox's Elixir engine may run a different version of Elixir than this project's .tool-versions lock file expects. This may not behave as intended.

Deployment with Nanobox

Test with a dry-run first:

  • nanobox evar add dry-run PORT=8080 MIX_ENV=prod EMBER_ENV=production
  • nanobox evar add dry-run ADMIN_USER=fixme ADMIN_PASS=fixme
  • nanobox evar add dry-run APPSIGNAL_APP_NAME="Nagini" APPSIGNAL_APP_ENV="dry-run" APPSIGNAL_PUSH_API_KEY="FIXME"
  • nanobox deploy dry-run
  • Test the dry-run deployed endpoint

Update the release version:

  • Edit mix.exs

Deploy:

  • nanobox remote add app-name
  • nanobox evar add app-name PORT=8080 MIX_ENV=prod EMBER_ENV=production
  • nanobox evar add app-name ADMIN_USER=fixme ADMIN_PASS=fixme
  • nanobox evar add app-name APPSIGNAL_APP_NAME="Nagini" APPSIGNAL_APP_ENV="prod" APPSIGNAL_PUSH_API_KEY="FIXME"
  • nanobox deploy

Monitoring

Monitoring is set up to work with AppSignal if the environment is configured.

To read the Nanobox server logs:

  • nanobox console app-name web.main
  • tail -f /tmp/nagini.log

IEx Console for Nanobox Remote

  • nanobox console app-name web.main
  • iex -S mix phx.server --no-start

The --no-start option prevents the normal applications from being started because that would throw errors such as the port being in use.

PSQL Usage for Nanobox Local

  • Find IP and password with nanobox info local
  • PGPASSWORD="" psql -h IP -p 5432 -U nanobox gonano

PSQL Usage for Nanobox Remote

  • Start the tunnel with nanobox tunnel data.event_store -p 5432
  • Find the password from Nanobox dashboard
  • psql -p 5432 -h 127.0.0.1 gonano nanobox
  • Enter the password`

License

Copyright 2019 Justin Workman. All Rights Reserved.