50 lines
1.1 KiB
Ruby
50 lines
1.1 KiB
Ruby
module Gitlab
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module Metrics
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# Rack middleware for tracking Rails requests.
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class RackMiddleware
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CONTROLLER_KEY = 'action_controller.instance'
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def initialize(app)
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@app = app
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end
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# env - A Hash containing Rack environment details.
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def call(env)
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trans = transaction_from_env(env)
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retval = nil
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begin
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retval = trans.run { @app.call(env) }
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# Even in the event of an error we want to submit any metrics we
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# might've gathered up to this point.
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ensure
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if env[CONTROLLER_KEY]
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tag_controller(trans, env)
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end
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trans.finish
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end
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retval
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end
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def transaction_from_env(env)
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trans = Transaction.new
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trans.add_tag(:request_method, env['REQUEST_METHOD'])
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trans.add_tag(:request_uri, env['REQUEST_URI'])
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trans
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end
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def tag_controller(trans, env)
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controller = env[CONTROLLER_KEY]
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label = "#{controller.class.name}##{controller.action_name}"
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trans.add_tag(:action, label)
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end
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end
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end
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end
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