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Computer Core

Computer Core is the central rails app for collecting and processing data from sensor arrays.

Development

createdb computer_core_development

sudo -u postgres psql

CREATE DATABASE computer_core_development;
CREATE USER computer_core_development WITH PASSWORD 'password';
ALTER USER computer_core_development WITH SUPERUSER;
GRANT ALL PRIVILEGES ON DATABASE "computer_core_development" to computer_core_development;
\q

bundle exec rake db:setup

bundle exec rails server

Production on a Pi

Get required packages

sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get install ruby ruby-dev libpq-dev git postgresql postgis nodejs -y

Clone ComputerCore

git clone https://github.com/ShipsComputer/ComputerCore.git && cd ComputerCore

Install rvm and set version

curl -L https://get.rvm.io | bash -s stable --ruby
source /home/pi/.rvm/scripts/rvm
rvm install ruby-2.3.1

Create Database sudo -u postgres psql

CREATE DATABASE computer_core;
CREATE USER computer_core WITH PASSWORD 'password';
ALTER USER computer_core WITH SUPERUSER;
GRANT ALL PRIVILEGES ON DATABASE "computer_core" to computer_core;
\q

Bundle install

gem install bundle
bundle install

Setup database

bundle exec rake db:setup RAILS_ENV=production

Run server

rvmsudo env PORT=80 RAILS_ENV=production rails server -p 80 -b 0.0.0.0

Start server on boot

crontab -e

and add

@reboot /bin/bash -l -c 'cd /home/pi/ComputerCore/ && export rvmsudo_secure_path=1 && rvmsudo PORT=80 rails server -b 0.0.0.0 -p 80 -e production'

API

Create coordinate

curl \
  -F latitude=-87.78429035612915 \
  -F longitude=-62.3206518996039 \
  -F 'timestamp=2015-01-01 00:00:00' \
  -F sensor_array=core_pi \
  -X POST http://localhost:3000/api/v1/coordinates

Create sensor reading

curl \
  -F temperature=25.5 \
  -F pressure='999.9' \
  -F sensor_array=core_pi \
  -X POST http://localhost:3000/api/v1/sensor_readings