41 lines
1.2 KiB
Ruby
41 lines
1.2 KiB
Ruby
# 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
|