class Rack::Heroku::Profiler
Appends a X-Heroku-Queue-Wait header to the response
Constants
- REQ_HEADER
- RES_HEADER
- VALS_RANGE
Public Class Methods
new(app)
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# File lib/rack/heroku/profiler.rb, line 7 def initialize(app) @app = app end
Public Instance Methods
call(env)
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# File lib/rack/heroku/profiler.rb, line 11 def call(env) ms = time_since env[REQ_HEADER] status, headers, body = @app.call(env) headers.update RES_HEADER => ms.to_s if ms && VALS_RANGE.include?(ms) [status, headers, body] end
Private Instance Methods
time_since(start)
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# File lib/rack/heroku/profiler.rb, line 21 def time_since(start) (Time.now.to_f * 1_000).to_i - start.to_i if start end