Class: GRI::Cgraph

Inherits:
Object show all
Defined in:
lib/gri/cgraph.rb

Constant Summary collapse

TERMS = 
{'sh'=>['Hour', 3600], 's8h'=>['8Hours', 8*3600],
'd'=>['Day', 24*3600], 'w'=>['Week', 7*24*3600],
'm'=>['Month', 31*24*3600], 'y'=>['Year', 366*24*3600]}

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Cgraph

Returns a new instance of Cgraph.



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# File 'lib/gri/cgraph.rb', line 10

def initialize options={}
  @options = options
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/gri/cgraph.rb', line 14

def call env
  req = Rack::Request.new env
  service_name, section_name, graph_name = Cast.parse_path_info env

  begin
    cast_dir = @options[:dir]
    gra_dir = "#{cast_dir}/#{service_name}"

    params = GParams.new
    params['r'] = "#{section_name}_num_#{graph_name}"
    params['z'] = 'gf'
    t = req.params['t'] || 'd'
    params['title'] = TERMS[t].first
    gr = Graph.new :dirs=>[gra_dir]
    etime = Time.now.to_i
    stime = etime - TERMS[t][1]
    img = gr.graph stime, etime, params
    [200, {'Content-type' => 'image/png'}, [img]]
  rescue
    [500, {}, []]
  end
end