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app.rb
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app.rb
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# encoding: utf-8
class FnordMetric::App < Sinatra::Base
@@sessions = Hash.new
@@public_files = {
"fnordmetric.css" => "text/css",
"fnordmetric.js" => "application/x-javascript",
"fnordmetric.ui.js" => "application/x-javascript",
"fnordmetric.util.js" => "application/x-javascript",
"fnordmetric.dashboard_view.js" => "application/x-javascript",
"fnordmetric.gauge_view.js" => "application/x-javascript",
"fnordmetric.overview_view.js" => "application/x-javascript",
"fnordmetric.session_view.js" => "application/x-javascript",
"fnordmetric.timeline_widget.js" => "application/x-javascript",
"fnordmetric.numbers_widget.js" => "application/x-javascript",
"fnordmetric.bars_widget.js" => "application/x-javascript",
"fnordmetric.toplist_widget.js" => "application/x-javascript",
"fnordmetric.pie_widget.js" => "application/x-javascript",
"fnordmetric.html_widget.js" => "application/x-javascript",
"vendor/jquery-1.6.1.min.js" => "application/x-javascript",
"vendor/highcharts.js" => "application/x-javascript",
"vendor/raphael.min.js" => "application/x-javascript",
"vendor/raphael.util.js" => "application/x-javascript",
"img/list.png" => "image/png",
"img/list_active.png" => "image/png",
"img/list_hover.png" => "image/png",
"img/picto_gauge.png" => "image/png",
"img/head.png" => "image/png",
"img/navbar.png" => "image/png",
"img/navbar_btn.png" => "image/png"
}
if RUBY_VERSION =~ /1.9.\d/
Encoding.default_external = Encoding::UTF_8
end
enable :session
set :haml, :format => :html5
set :views, ::File.expand_path('../../../../haml', __FILE__)
def initialize(namespaces, opts)
@namespaces = {}
@redis = Redis.connect(:url => opts[:redis_url])
@opts = opts
namespaces.each do |key, block|
@namespaces[key] = FnordMetric::Namespace.new(key, opts.clone)
@namespaces[key].instance_eval(&block)
@namespaces[key].ready!(@redis.clone)
end
super(nil)
end
helpers do
include Rack::Utils
alias_method :h, :escape_html
def path_prefix
request.env["SCRIPT_NAME"]
end
def namespaces
@namespaces
end
def current_namespace
@namespaces[@namespaces.keys.detect{ |k|
k.to_s == params[:namespace]
}.try(:intern)]
end
end
if ENV['RACK_ENV'] == "test"
set :raise_errors, true
end
get '/' do
::File.open(::File.expand_path("../../../../web/fnordmetric.html", __FILE__)).read
end
get '/:namespace' do
pass unless current_namespace
haml :app
end
get '/favicon.ico' do
""
end
get '/:namespace/gauge/:name' do
gauge = if params[:name].include?("++")
parts = params[:name].split("++")
current_namespace.gauges[parts.first.to_sym].fetch_gauge(parts.last, params[:tick].to_i)
else
current_namespace.gauges[params[:name].to_sym]
end
if !gauge
status 404
return ""
end
data = if gauge.three_dimensional?
_t = (params[:at] || Time.now).to_i
{ :count => gauge.field_values_total(_t), :values => gauge.field_values_at(_t) }
elsif params[:at] && params[:at] =~ /^[0-9]+$/
{ (_t = gauge.tick_at(params[:at].to_i)) => gauge.value_at(_t) }
elsif params[:at] && params[:at] =~ /^([0-9]+)-([0-9]+)$/
_range = params[:at].split("-").map(&:to_i)
_values = gauge.values_in(_range.first.._range.last)
params[:sum] ? { :sum => _values.values.compact.map(&:to_i).sum } : _values
else
{ (_t = gauge.tick_at(Time.now.to_i-gauge.tick)) => gauge.value_at(_t) }
end
data.to_json
end
get '/:namespace/sessions' do
sessions = current_namespace.sessions(:all, :limit => 100).map do |session|
session.fetch_data!
session.to_json
end
{ :sessions => sessions }.to_json
end
get '/:namespace/events' do
events = if params[:type]
current_namespace.events(:by_type, :type => params[:type])
elsif params[:session_key]
current_namespace.events(:by_session_key, :session_key => params[:session_key])
else
find_opts = { :limit => 100 }
find_opts.merge!(:since => params[:since].to_i+1) if params[:since]
current_namespace.events(:all, find_opts)
end
{ :events => events.map(&:to_json) }.to_json
end
get '/:namespace/event_types' do
types_key = current_namespace.key_prefix("type-")
keys = @redis.keys("#{types_key}*").map{ |k| k.gsub(types_key,'') }
{ :types => keys }.to_json
end
get '/:namespace/dashboard/:dashboard' do
dashboard = current_namespace.dashboards.fetch(params[:dashboard])
dashboard.to_json
end
post '/events' do
halt 400, 'please specify the event_type (_type)' unless params["_type"]
track_event((8**32).to_s(36), parse_params(params))
end
@@public_files.each do |public_file, public_file_type|
get "/#{public_file}" do
content_type(public_file_type)
::File.open(::File.expand_path("../../../../web/#{public_file}", __FILE__)).read
end
end
private
def parse_params(hash)
hash.tap do |h|
h.keys.each{ |k| h[k] = parse_param(h[k]) }
end
end
def parse_param(object)
return object unless object.is_a?(String)
return object.to_f if object.match(/^[0-9]+[,\.][0-9]+$/)
return object.to_i if object.match(/^[0-9]+$/)
object
end
def track_event(event_id, event_data)
@redis.hincrby "#{@opts[:redis_prefix]}-stats", "events_received", 1
@redis.set "#{@opts[:redis_prefix]}-event-#{event_id}", event_data.to_json
@redis.lpush "#{@opts[:redis_prefix]}-queue", event_id
@redis.expire "#{@opts[:redis_prefix]}-event-#{event_id}", @opts[:event_queue_ttl]
end
end