Class: Stoker

Inherits:
Object
  • Object
show all
Defined in:
lib/stoker.rb

Constant Summary collapse

ALARMS = 
["None", "Food", "Fire"]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host = nil, options = {}) ⇒ Stoker

Returns a new instance of Stoker.



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# File 'lib/stoker.rb', line 21

def initialize(host = nil, options = {})
  @host         = host
  @http_port    = options[:http_port]   || 80
  @telnet_port  = options[:telnet_port] || 23
  @user         = options[:user]        || "root"
  @pass         = options[:pass]        || "tini"
  @telnet       = nil
  @sensors      = []
  @blowers      = []
  
  read_sensors
end

Instance Attribute Details

#blower_opts ⇒ Object (readonly)

Returns the value of attribute blower_opts.



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# File 'lib/stoker.rb', line 17

def blower_opts
  @blower_opts
end

#blowers ⇒ Object (readonly)

Returns the value of attribute blowers.



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# File 'lib/stoker.rb', line 17

def blowers
  @blowers
end

#host ⇒ Object

Returns the value of attribute host.



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# File 'lib/stoker.rb', line 15

def host
  @host
end

#http_port ⇒ Object

Returns the value of attribute http_port.



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# File 'lib/stoker.rb', line 15

def http_port
  @http_port
end

#pass ⇒ Object

Returns the value of attribute pass.



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# File 'lib/stoker.rb', line 15

def pass
  @pass
end

#sensor_opts ⇒ Object (readonly)

Returns the value of attribute sensor_opts.



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# File 'lib/stoker.rb', line 17

def sensor_opts
  @sensor_opts
end

#sensors ⇒ Object (readonly)

Returns the value of attribute sensors.



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# File 'lib/stoker.rb', line 17

def sensors
  @sensors
end

#telnet ⇒ Object (readonly)

Returns the value of attribute telnet.



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# File 'lib/stoker.rb', line 17

def telnet
  @telnet
end

#telnet_port ⇒ Object

Returns the value of attribute telnet_port.



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# File 'lib/stoker.rb', line 15

def telnet_port
  @telnet_port
end

#user ⇒ Object

Returns the value of attribute user.



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# File 'lib/stoker.rb', line 15

def user
  @user
end

Instance Method Details

#blower(str) ⇒ Object 



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# File 'lib/stoker.rb', line 131

def blower(str)
  raise "Blower not specified" if str.nil?
  str = str.downcase
  @blowers.find{|b| b.name.downcase == str or b.serial_number.downcase == str}
end

#connect ⇒ Object 



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# File 'lib/stoker.rb', line 34

def connect
  @telnet = Net::Telnet.new("Host" => @host, "Port" => @telnet_port)
  @telnet.(@user, @pass)
  # bbq -k
  # gc
  # bbq -t
end

#disconnect ⇒ Object 



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# File 'lib/stoker.rb', line 42

def disconnect
  @telnet.close
end

#post(params = {}) ⇒ Object 



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# File 'lib/stoker.rb', line 137

def post(params = {})
  post_url = "http://#{@host}:#{@http_port}/stoker.Post_Handler"
  
  queries = []

  if TEST
    params.each do |k,v|
      queries << "#{k}=#{CGI::escape(v)}"
    end

    q = queries.join("&")

    warn "#{post_url}?#{q}"
  else
    # stoker http doesn't like keep alive, so have to do post request the long way
    # res = HTTP.post_form(URI.parse(post_url), params)
    url = URI.parse(post_url)
    req = HTTP::Post.new(url.path)
    req["Keep-Alive"] = false
    req.set_form_data(params)
    res = HTTP.new(url.host, url.port).start {|http| http.request(req) }
    case res
    when Net::HTTPSuccess, Net::HTTPRedirection
      # puts res.body
      true
    else
      res.error!
    end
  end
end

#read_sensors(attempt = 1) ⇒ Object 



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# File 'lib/stoker.rb', line 46

def read_sensors(attempt = 1)
  @sensors    = []
  @blowers    = []
  html        = TEST_HTML if TEST
  html      ||= open("http://#{@host}:#{@http_port}")
  contents    = html.read
  @sensor_opts = []
  @blower_opts = []
  
  doc = Hpricot(contents)

  (doc/"td.ser_num/b[text() = 'Blower']:first/../../../tr").each do |row|
    unless (row/"td:first/b").size > 0
      @blower_opts << {
        :serial_number  => row.at("td[1]").inner_html,
        :name           => row.at("td[2]/input")['value'].strip
      }
    end
  end
  
  (doc/"td.ser_num/b[text() = 'Temp Sensor']:first/../../../tr").each do |row|
    unless (row/"td:first/b").size > 0
      @sensor_opts << {
        :serial_number  => row.at("td[1]").inner_html,
        :name           => row.at("td[2]/input")['value'].strip,
        :temp           => row.at("td[3]").inner_html,
        :target         => row.at("td[4]/input")['value'].strip,
        :low            => row.at("td[6]/input")['value'].strip,
        :high           => row.at("td[7]/input")['value'].strip
      }
    end
  end

  if contents =~ /sel = \[(.*)\];$/
    blower_alarm_string = $1
  end
  
  count       = 0
  for_sensor  = 0
  blower_alarm_string.split(",").each do |val|
    case count
    when 0
      @sensor_opts[for_sensor][:alarm] = Stoker::ALARMS[val.to_i]
      count += 1
    when 1
      @sensor_opts[for_sensor][:blower_serial_number] = val.gsub(/\"/,'') unless val == '""'
      count = 0
      for_sensor += 1
    end
  end

  @sensor_opts.each do |s|
    if s[:blower_serial_number].to_s != ""
      @blower_opts.each do |b|
        if b[:serial_number] == s[:blower_serial_number]
          b[:sensor_serial_number] = s[:serial_number]
        end
      end
    end
  end

  @sensor_opts.each do |s|
    @sensors << Sensor.new(self, s)
  end

  @blower_opts.each do |b|
    @blowers << Blower.new(self, b)
  end

rescue Net::HTTPBadResponse
  if attempt > 4
    raise "Web page output corrupt.  Tried too many times, giving up."
  else
    attempt += 1
    warn "Warning: Web page output corrupt.  Retrying... attempt #{attempt}"
    read_sensors(attempt)
  end
end

#sensor(str) ⇒ Object 



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# File 'lib/stoker.rb', line 125

def sensor(str)
  raise "Sensor not specified" if str.nil?
  str = str.downcase
  @sensors.find{|s| s.name.downcase == str or s.serial_number.downcase == str}
end