debian-mirror-gitlab/lib/gitlab/metrics/dashboard/importers/prometheus_metrics.rb

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2020-11-24 15:15:51 +05:30
# frozen_string_literal: true
module Gitlab
module Metrics
module Dashboard
module Importers
class PrometheusMetrics
ALLOWED_ATTRIBUTES = %i(title query y_label unit legend group dashboard_path).freeze
# Takes a JSON schema validated dashboard hash and
# imports metrics to database
def initialize(dashboard_hash, project:, dashboard_path:)
@dashboard_hash = dashboard_hash
@project = project
@dashboard_path = dashboard_path
end
def execute
import
rescue ActiveRecord::RecordInvalid, ::Gitlab::Metrics::Dashboard::Transformers::TransformerError
false
end
def execute!
import
end
private
attr_reader :dashboard_hash, :project, :dashboard_path
def import
delete_stale_metrics
create_or_update_metrics
end
# rubocop: disable CodeReuse/ActiveRecord
def create_or_update_metrics
# TODO: use upsert and worker for callbacks?
prometheus_metrics_attributes.each do |attributes|
prometheus_metric = PrometheusMetric.find_or_initialize_by(attributes.slice(:identifier, :project))
prometheus_metric.update!(attributes.slice(*ALLOWED_ATTRIBUTES))
end
end
# rubocop: enable CodeReuse/ActiveRecord
def delete_stale_metrics
identifiers = prometheus_metrics_attributes.map { |metric_attributes| metric_attributes[:identifier] }
stale_metrics = PrometheusMetric.for_project(project)
.for_dashboard_path(dashboard_path)
.for_group(Enums::PrometheusMetric.groups[:custom])
.not_identifier(identifiers)
# TODO: use destroy_all and worker for callbacks?
stale_metrics.each(&:destroy)
end
def prometheus_metrics_attributes
@prometheus_metrics_attributes ||= begin
Dashboard::Transformers::Yml::V1::PrometheusMetrics.new(
dashboard_hash,
project: project,
dashboard_path: dashboard_path
).execute
end
end
end
end
end
end
end