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27 lines
710 B
Ruby
27 lines
710 B
Ruby
module Rack
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# Sets an "X-Runtime" response header, indicating the response
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# time of the request, in seconds
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#
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# You can put it right before the application to see the processing
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# time, or before all the other middlewares to include time for them,
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# too.
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class Runtime
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def initialize(app, name = nil)
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@app = app
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@header_name = "X-Runtime"
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@header_name << "-#{name}" if name
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end
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def call(env)
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start_time = Time.now
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status, headers, body = @app.call(env)
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request_time = Time.now - start_time
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if !headers.has_key?(@header_name)
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headers[@header_name] = "%0.6f" % request_time
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end
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[status, headers, body]
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end
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end
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end
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