diff options
Diffstat (limited to 'lib/gitlab/metrics/exporter/metrics_middleware.rb')
-rw-r--r-- | lib/gitlab/metrics/exporter/metrics_middleware.rb | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/gitlab/metrics/exporter/metrics_middleware.rb b/lib/gitlab/metrics/exporter/metrics_middleware.rb new file mode 100644 index 00000000000..e17f1c13cf0 --- /dev/null +++ b/lib/gitlab/metrics/exporter/metrics_middleware.rb @@ -0,0 +1,41 @@ +# frozen_string_literal: true + +module Gitlab + module Metrics + module Exporter + class MetricsMiddleware + def initialize(app, pid) + @app = app + default_labels = { + pid: pid + } + @requests_total = Gitlab::Metrics.counter( + :exporter_http_requests_total, 'Total number of HTTP requests', default_labels + ) + @request_durations = Gitlab::Metrics.histogram( + :exporter_http_request_duration_seconds, + 'HTTP request duration histogram (seconds)', + default_labels, + [0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10] + ) + end + + def call(env) + start = Gitlab::Metrics::System.monotonic_time + @app.call(env).tap do |response| + duration = Gitlab::Metrics::System.monotonic_time - start + + labels = { + method: env['REQUEST_METHOD'].downcase, + path: env['PATH_INFO'].to_s, + code: response.first.to_s + } + + @requests_total.increment(labels) + @request_durations.observe(labels, duration) + end + end + end + end + end +end |