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# frozen_string_literal: true
require_relative '../config/boot'
require_relative 'dependencies'
class MetricsServer # rubocop:disable Gitlab/NamespacedClass
class << self
def spawn(target, gitlab_config: nil, wipe_metrics_dir: false)
cmd = "#{Rails.root}/bin/metrics-server"
env = {
'METRICS_SERVER_TARGET' => target,
'GITLAB_CONFIG' => gitlab_config,
'WIPE_METRICS_DIR' => wipe_metrics_dir.to_s
}
Process.spawn(env, cmd, err: $stderr, out: $stdout).tap do |pid|
Process.detach(pid)
end
end
end
def initialize(target, metrics_dir, wipe_metrics_dir)
@target = target
@metrics_dir = metrics_dir
@wipe_metrics_dir = wipe_metrics_dir
end
def start
::Prometheus::Client.configure do |config|
config.multiprocess_files_dir = @metrics_dir
end
FileUtils.mkdir_p(@metrics_dir, mode: 0700)
::Prometheus::CleanupMultiprocDirService.new.execute if @wipe_metrics_dir
settings = Settings.monitoring.sidekiq_exporter
exporter_class = "Gitlab::Metrics::Exporter::#{@target.camelize}Exporter".constantize
server = exporter_class.instance(settings, synchronous: true)
server.start
end
end
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