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Diffstat (limited to 'lib/gitlab/health_checks/unicorn_check.rb')
-rw-r--r-- | lib/gitlab/health_checks/unicorn_check.rb | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/gitlab/health_checks/unicorn_check.rb b/lib/gitlab/health_checks/unicorn_check.rb new file mode 100644 index 00000000000..a30ae015257 --- /dev/null +++ b/lib/gitlab/health_checks/unicorn_check.rb @@ -0,0 +1,41 @@ +# frozen_string_literal: true + +module Gitlab + module HealthChecks + # This check can only be run on Unicorn `master` process + class UnicornCheck + extend SimpleAbstractCheck + + class << self + include Gitlab::Utils::StrongMemoize + + private + + def metric_prefix + 'unicorn_check' + end + + def successful?(result) + result > 0 + end + + def check + return unless http_servers + + http_servers.sum(&:worker_processes) # rubocop: disable CodeReuse/ActiveRecord + end + + # Traversal of ObjectSpace is expensive, on fully loaded application + # it takes around 80ms. The instances of HttpServers are not a subject + # to change so we can cache the list of servers. + def http_servers + strong_memoize(:http_servers) do + next unless defined?(::Unicorn::HttpServer) + + ObjectSpace.each_object(::Unicorn::HttpServer).to_a + end + end + end + end + end +end |