sinatra_app.rb

  class SinatraApp < ::Sinatra::Base
    def initialize(graphite_base, graph_templates, options = {})
      # where the whisper data is
      @whisper_dir = options.delete(:whisper_dir) || "/var/lib/carbon/whisper"

      # where graphite lives
      @graphite_base = graphite_base

      # where the graphite renderer is
      @graphite_render = [@graphite_base, "/render/"].join

      # where to find graph, dash etc templates
      @graph_templates = graph_templates

      # the dash site might have a prefix for its css etc
      @prefix = options.delete(:prefix) || ""

      # the page refresh rate
      @refresh_rate = options.delete(:refresh_rate) || 60

      # how many columns of graphs do you want on a page
      @graph_columns = options.delete(:graph_columns) || 2

      # how wide each graph should be
      @graph_width = options.delete(:graph_width)

      # how hight each graph sould be
      @graph_height = options.delete(:graph_height)

      # Dashboard title
      @dash_title = options.delete(:title) || "Graphite Dashboard"

      # Do we want to display the graphite source URL
      @graphite_url_displayed = options.delete(:graphite_url_displayed) || true

      # Time filters in interface
      @interval_filters = options.delete(:interval_filters) || Array.new

      @intervals = options.delete(:intervals) || []

      @top_level = Hash.new
      Dir.entries(@graph_templates).each do |category|
        if File.directory?("#{@graph_templates}/#{category}")
          unless ("#{category}" =~ /^\./ )
            gdash = GDash.new(@graphite_base, "/render/", @graph_templates, category, {:width => @graph_width, :height => @graph_height})
            @top_level["#{category}"] = gdash unless gdash.dashboards.empty?
          end
        end
      end

      super()
    end