Class: FaradayMiddleware::Instrumentation

Inherits:
Faraday::Middleware
  • Object
show all
Defined in:
lib/faraday_middleware/instrumentation.rb

Overview

Public: Instruments requests using Active Support.

Measures time spent only for synchronous requests.

Examples

ActiveSupport::Notifications.subscribe('request.faraday') do |name, starts, ends, _, env|
  url = env[:url]
  http_method = env[:method].to_s.upcase
  duration = ends - starts
  $stderr.puts '[%s] %s %s (%.3f s)' % [url.host, http_method, url.request_uri, duration]
end

Instance Method Summary collapse

Constructor Details

#initialize(app, options = {}) ⇒ Instrumentation

Returns a new instance of Instrumentation.



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# File 'lib/faraday_middleware/instrumentation.rb', line 19

def initialize(app, options = {})
  super(app)
  @name = options.fetch(:name, 'request.faraday')
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/faraday_middleware/instrumentation.rb', line 24

def call(env)
  ActiveSupport::Notifications.instrument(@name, env) do
    @app.call(env)
  end
end