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# frozen_string_literal: true
require 'webrick'
require 'prometheus/client/rack/exporter'
module Gitlab
module Metrics
module Exporter
class WebExporter < BaseExporter
ExporterCheck = Struct.new(:exporter) do
def readiness
Gitlab::HealthChecks::Result.new(
'web_exporter', exporter.running)
end
end
attr_reader :running
# This exporter is always run on master process
def initialize
super
self.readiness_checks = [
WebExporter::ExporterCheck.new(self),
Gitlab::HealthChecks::PumaCheck,
Gitlab::HealthChecks::UnicornCheck
]
end
def settings
Gitlab.config.monitoring.web_exporter
end
def log_filename
File.join(Rails.root, 'log', 'web_exporter.log')
end
private
def start_working
@running = true
super
end
def stop_working
@running = false
wait_in_blackout_period if server && thread.alive?
super
end
def wait_in_blackout_period
return unless blackout_seconds > 0
@server.logger.info(
message: 'starting blackout...',
duration_s: blackout_seconds)
sleep(blackout_seconds)
end
def blackout_seconds
settings['blackout_seconds'].to_i
end
end
end
end
end
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