24 lines
713 B
Ruby
24 lines
713 B
Ruby
# This Rack middleware is intended to measure the latency between
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# gitlab-workhorse forwarding a request to the Rails application and the
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# time this middleware is reached.
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module Gitlab
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module Middleware
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class RailsQueueDuration
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def initialize(app)
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@app = app
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end
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def call(env)
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trans = Gitlab::Metrics.current_transaction
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proxy_start = env['HTTP_GITLAB_WORKHORSE_PROXY_START'].presence
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if trans && proxy_start
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# Time in milliseconds since gitlab-workhorse started the request
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trans.set(:rails_queue_duration, Time.now.to_f * 1_000 - proxy_start.to_f / 1_000_000)
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end
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@app.call(env)
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end
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end
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end
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end
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