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module Gitlab
module Metrics
class RequestsRackMiddleware
def initialize(app)
@app = app
end
def self.http_request_total
@http_request_total ||= Gitlab::Metrics.counter(:http_requests_total, 'Request count')
end
def self.rack_uncaught_errors_count
@rack_uncaught_errors_count ||= Gitlab::Metrics.counter(:rack_uncaught_errors_total, 'Request handling uncaught errors count')
end
def self.http_request_duration_seconds
@http_request_duration_seconds ||= Gitlab::Metrics.histogram(:http_request_duration_seconds, 'Request handling execution time',
{}, [0.05, 0.1, 0.25, 0.5, 0.7, 1, 2.5, 5, 10, 25])
end
def call(env)
method = env['REQUEST_METHOD'].downcase
started = Time.now.to_f
begin
RequestsRackMiddleware.http_request_total.increment(method: method)
status, headers, body = @app.call(env)
elapsed = Time.now.to_f - started
RequestsRackMiddleware.http_request_duration_seconds.observe({ method: method, status: status }, elapsed)
[status, headers, body]
rescue
RequestsRackMiddleware.rack_uncaught_errors_count.increment
raise
end
end
end
end
end
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