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require 'sinatra'
require 'paho-mqtt'
require 'sqlite3'
require 'date'
require 'dm-core'
require 'dm-timestamps'
require 'dm-validations'
require 'dm-migrations'
set :public_folder, File.dirname(__FILE__) + '/public'
set :bind, '::'
configure do
mime_type :text, 'text/plain'
end
DataMapper.setup(:default, ENV['DATABASE_URL'] || "sqlite3://#{Dir.pwd}/scarecrow.sqlite")
class Temperature
include DataMapper::Resource
property :id, Serial
property :device, String
property :timestamp, DateTime
property :value, Float
end
class Humidity
include DataMapper::Resource
property :id, Serial
property :device, String
property :timestamp, DateTime
property :value, Float
end
class Moisture
include DataMapper::Resource
property :id, Serial
property :device, String
property :timestamp, DateTime
property :value, Float
end
def init
DataMapper.auto_migrate!
DataMapper.auto_upgrade!
# sleep 10
Thread.new do
mqtt_client = PahoMqtt::Client.new
mqtt_client.connect('192.168.0.59', 1883, mqtt_client.keep_alive, true, mqtt_client.blocking)
mqtt_client.subscribe('+/temperature', '+/humidity', '+/moisture')
mqtt_client.on_message do |m|
handle_msg(m.topic, m.payload)
end
end
end
def handle_msg(topic, msg)
puts "#{topic}: #{msg}"
topic_parts = topic.split("/")
device_id = topic_parts[0]
type = topic_parts[-1]
if type == "humidity"
handle_humidity_msg(device_id, msg)
elsif type == "temperature"
handle_temp_message(device_id, msg)
elsif type == "moisture"
handle_moisture_message(device_id, msg)
end
end
def handle_humidity_msg(device_id, msg)
humidity = Humidity.create(timestamp: DateTime.now, device: device_id, value: msg)
humidity.errors.each do |error|
puts error
end
end
def handle_temp_message(device_id, msg)
temp = Temperature.create(timestamp: DateTime.now, device: device_id, value: msg)
temp.errors.each do |error|
puts error
end
end
def handle_moisture_message(device_id, msg)
moisture = Moisture.create(timestamp: DateTime.now, device: device_id, value: msg)
moisture.errors.each do |error|
puts error
end
end
def get_value(type, device_id)
entry = nil
value = 0.0
if type == :temperature
entry = Temperature.last(device: device_id)
elsif type == :humidity
entry = Humidity.last(device: device_id)
elsif type == :moisture
entry = Moisture.last(device: device_id)
end
if entry != nil
value = entry[:value]
end
return value
end
def get_time(type, device_id)
entry = nil
value = Time.at(0)
if type == :temperature
entry = Temperature.last(device: device_id)
elsif type == :humidity
entry = Humidity.last(device: device_id)
elsif type == :moisture
entry = Moisture.last(device: device_id)
end
if entry != nil
value = entry[:timestamp]
end
return value
end
get '/' do
# send_file File.join(settings.public_folder, 'index.html')
@temp_prop = get_value(:temperature, "cricket0")
@humidity_prop = get_value(:humidity, "cricket0")
@temp_air = get_value(:temperature, "mercury")
@humidity_air = get_value(:humidity, "mercury")
@temp_kitchen = get_value(:temperature, "cricket1")
@humidity_kitchen = get_value(:humidity, "cricket1")
@moisture_kitchen = (1000-(get_value(:moisture, "cricket1")))/10
time_prop = get_time(:temperature, "cricket0")
time_air = get_time(:temperature, "mercury")
time_kitchen = get_time(:temperature, "cricket1")
@time_formatted_prop = time_prop.strftime("%A, %d %b %Y %l:%M %p")
@time_formatted_air = time_air.strftime("%A, %d %b %Y %l:%M %p")
@time_formatted_kitchen = time_kitchen.strftime("%A, %d %b %Y %l:%M %p")
erb :index
# return "#{temp_val}°C and #{humidity_val}% humidity at #{time_formatted}"
end
get '/temperature/:device_id' do
device_id = "mercury" if (params[:device_id] == "air" || params[:device_id] == "kitchen")
device_id = "cricket0" if (params[:device_id] == "propagator")
device_id = "cricket1" if (params[:device_id] == "kitchen")
device_id ||= params[:device_id]
temp = Temperature.last(device: device_id)[:value]
return "#{temp}"
end
get '/humidity/:device_id' do
device_id = "mercury" if (device_id == "air" || device_id == "basement")
device_id = "cricket0" if (device_id == "propagator")
device_id = "cricket1" if (device_id == "kitchen")
humidity = Humidity.last(device: device_id)[:value]
"#{humidity}"
end
get '/moisture/:device_id' do
device_id = "mercury" if (device_id == "air" || device_id == "basement")
device_id = "cricket0" if (device_id == "propagator")
device_id = "cricket1" if (device_id == "kitchen")
moisture = Moisture.last(device: device_id)[:value]
"#{moisture}"
end
get '/metrics' do
content_type :text
temp_prop = get_value(:temperature, "cricket0")
humidity_prop = get_value(:humidity, "cricket0")
temp_air = get_value(:temperature, "mercury")
humidity_air = get_value(:humidity, "mercury")
temp_kitchen = get_value(:temperature, "cricket1")
humidity_kitchen = get_value(:humidity, "cricket1")
moisture_kitchen = (1000-(get_value(:moisture, "cricket1")))/10
"humidity_basement #{humidity_air}
humidity_propagator #{humidity_prop}
humidity_kitchen #{humidity_kitchen}
temperature_basement #{temp_air}
temperature_propagator #{temp_prop}
temperature_kitchen #{temp_kitchen}
moisture_kitchen #{moisture_kitchen}"
end
init
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