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# frozen_string_literal: true
module Gitlab
# Provides routines to identify the current runtime as which the application
# executes, such as whether it is an application server and which one.
module Runtime
IdentificationError = Class.new(RuntimeError)
AmbiguousProcessError = Class.new(IdentificationError)
UnknownProcessError = Class.new(IdentificationError)
AVAILABLE_RUNTIMES = [
:console,
:geo_log_cursor,
:puma,
:rails_runner,
:rake,
:sidekiq,
:test_suite,
:unicorn
].freeze
class << self
def identify
matches = AVAILABLE_RUNTIMES.select { |runtime| public_send("#{runtime}?") } # rubocop:disable GitlabSecurity/PublicSend
if matches.one?
matches.first
elsif matches.none?
raise UnknownProcessError.new(
"Failed to identify runtime for process #{Process.pid} (#{$0})"
)
else
raise AmbiguousProcessError.new(
"Ambiguous runtime #{matches} for process #{Process.pid} (#{$0})"
)
end
end
def puma?
!!defined?(::Puma)
end
# For unicorn, we need to check for actual server instances to avoid false positives.
def unicorn?
!!(defined?(::Unicorn) && defined?(::Unicorn::HttpServer))
end
def sidekiq?
!!(defined?(::Sidekiq) && Sidekiq.server?)
end
def rake?
!!(defined?(::Rake) && Rake.application.top_level_tasks.any?)
end
def test_suite?
Rails.env.test?
end
def console?
!!defined?(::Rails::Console)
end
def geo_log_cursor?
!!defined?(::GeoLogCursorOptionParser)
end
def rails_runner?
!!defined?(::Rails::Command::RunnerCommand)
end
def web_server?
puma? || unicorn?
end
def action_cable?
web_server? && (!!defined?(ACTION_CABLE_SERVER) || Gitlab::ActionCable::Config.in_app?)
end
def multi_threaded?
puma? || sidekiq? || action_cable?
end
def max_threads
threads = 1 # main thread
if puma?
threads += Puma.cli_config.options[:max_threads]
elsif sidekiq?
# An extra thread for the poller in Sidekiq Cron:
# https://github.com/ondrejbartas/sidekiq-cron#under-the-hood
threads += Sidekiq.options[:concurrency] + 1
end
if action_cable?
threads += Gitlab::ActionCable::Config.worker_pool_size
end
threads
end
end
end
end
|
