42 lines
1.2 KiB
Ruby
42 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Metrics
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module Exporter
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class MetricsMiddleware
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def initialize(app, pid)
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@app = app
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default_labels = {
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pid: pid
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}
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@requests_total = Gitlab::Metrics.counter(
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:exporter_http_requests_total, 'Total number of HTTP requests', default_labels
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)
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@request_durations = Gitlab::Metrics.histogram(
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:exporter_http_request_duration_seconds,
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'HTTP request duration histogram (seconds)',
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default_labels,
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[0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10]
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)
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end
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def call(env)
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start = Gitlab::Metrics::System.monotonic_time
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@app.call(env).tap do |response|
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duration = Gitlab::Metrics::System.monotonic_time - start
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labels = {
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method: env['REQUEST_METHOD'].downcase,
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path: env['PATH_INFO'].to_s,
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code: response.first.to_s
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}
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@requests_total.increment(labels)
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@request_durations.observe(labels, duration)
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end
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end
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end
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end
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end
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end
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