Class: Rack::Perf

Inherits:
Object
  • Object
show all
Defined in:
lib/rack/perf.rb,
lib/rack/perf/version.rb

Defined Under Namespace

Classes: DetermineIPAddress, NormalizePath, PerformanceTracker, SendDataToPerf

Constant Summary collapse

HIDDEN_READABLE_FIELDS = 
[
  :starttime, :endtime, :api_key,
  :debug, :stack, :env
]
VERSION = 
"1.1.6"

Instance Method Summary collapse

Constructor Details

#initialize(stack, api_key, debug = false) ⇒ Perf

Returns a new instance of Perf.



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# File 'lib/rack/perf.rb', line 14

def initialize(stack, api_key, debug = false)
  @stack   = stack
  @api_key = api_key
  @debug   = debug
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/rack/perf.rb', line 20

def call(env)
  @env = env

  # log the current time now before the request starts
  performance_tracker = PerformanceTracker.new
  performance_tracker.start

  # run the current request
  request = Rack::Request.new(env)
  status, headers, body = stack.call(env)

  # log the end time of the request
  performance_tracker.end

  # normalize url
  normalized_path = NormalizePath.new(request)

  # send it up as long as we don't get nil, this helps
  # in cases when we intercept asset urls that don't
  # really matter
  if normalized_path.path?
    send_data                = SendDataToPerf.new
    send_data.api_key        = @api_key
    send_data.ip_addr        = DetermineIPAddress.new(request).ip_address
    send_data.request_method = request.request_method
    send_data.request_url    = request.url
    send_data.normalized_uri = normalized_path.path
    send_data.status_code    = status
    send_data.time_in_millis = performance_tracker.time
    send_data.perform!
  end

  # send back intended data
  [status, headers, body]
end