debian-mirror-gitlab/app/models/concerns/prometheus_adapter.rb
2019-12-21 20:55:43 +05:30

54 lines
1.5 KiB
Ruby

# frozen_string_literal: true
module PrometheusAdapter
extend ActiveSupport::Concern
included do
include ReactiveCaching
# We can't prepend outside of this model due to the use of `included`, so this must stay here.
prepend_if_ee('EE::PrometheusAdapter') # rubocop: disable Cop/InjectEnterpriseEditionModule
self.reactive_cache_lease_timeout = 30.seconds
self.reactive_cache_refresh_interval = 30.seconds
self.reactive_cache_lifetime = 1.minute
def prometheus_client
raise NotImplementedError
end
def can_query?
prometheus_client.present?
end
def query(query_name, *args)
return unless can_query?
query_class = query_klass_for(query_name)
query_args = build_query_args(*args)
with_reactive_cache(query_class.name, *query_args, &query_class.method(:transform_reactive_result))
end
# Cache metrics for specific environment
def calculate_reactive_cache(query_class_name, *args)
return unless prometheus_client
data = Object.const_get(query_class_name, false).new(prometheus_client).query(*args)
{
success: true,
data: data,
last_update: Time.now.utc
}
rescue Gitlab::PrometheusClient::Error => err
{ success: false, result: err.message }
end
def query_klass_for(query_name)
Gitlab::Prometheus::Queries.const_get("#{query_name.to_s.classify}Query", false)
end
def build_query_args(*args)
args.map { |arg| arg.respond_to?(:id) ? arg.id : arg }
end
end
end