class EasyServerTiming::Middleware
Constants
- SERVER_TIMING_HEADER
Public Class Methods
new(app)
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# File lib/easy_server_timing/middleware.rb, line 10 def initialize(app) @app = app end
Public Instance Methods
call(env)
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# File lib/easy_server_timing/middleware.rb, line 14 def call(env) events = [] subscriber = ActiveSupport::Notifications.subscribe(EasyServerTiming.notification_pattern) do |*args| events << ActiveSupport::Notifications::Event.new(*args) end status, headers, body = begin @app.call(env) ensure ActiveSupport::Notifications.unsubscribe(subscriber) end header_info = events.group_by(&:name).map do |event_name, events_collection| "#{event_name};dur=#{events_collection.sum { |e| e.duration.to_f }}" end headers[SERVER_TIMING_HEADER] = header_info.join(",") [ status, headers, body ] end