class GitLab::Exporter::WebExporter

Metrics web exporter

Constants

DEFAULT_WEB_SERVER

Public Class Methods

logger() click to toggle source
# File lib/gitlab_exporter/web_exporter.rb, line 69
def logger
  request.logger
end
setup(config) click to toggle source
# File lib/gitlab_exporter/web_exporter.rb, line 56
def setup(config)
  setup_server(config[:server])
  setup_probes(config[:probes])

  memory_threshold = (config[:server] && config[:server][:memory_threshold]) || 1024
  use MemoryKillerMiddleware, memory_threshold
  use Rack::Logger
  use RunGC

  # Defrag heap after everything is loaded into memory.
  GC.compact
end
setup_probes(config) click to toggle source
# File lib/gitlab_exporter/web_exporter.rb, line 81
def setup_probes(config)
  (config || {}).each do |probe_name, params|
    opts =
      if params.delete(:multiple)
        params
      else
        { probe_name => params }
      end

    get "/#{probe_name}" do
      content_type "text/plain; version=0.0.4"
      prober = Prober.new(metrics: PrometheusMetrics.new(include_timestamp: false), logger: logger, **opts)

      prober.probe_all
      prober.write_to(response)

      response
    end
  end
end
setup_server(config) click to toggle source
# File lib/gitlab_exporter/web_exporter.rb, line 73
def setup_server(config)
  config ||= {}

  set(:server, config.fetch(:name, DEFAULT_WEB_SERVER))
  set(:bind, config.fetch(:listen_address, "0.0.0.0"))
  set(:port, config.fetch(:listen_port, 9168))
end