diff options
Diffstat (limited to 'db/importers/common_metrics_importer.rb')
-rw-r--r-- | db/importers/common_metrics_importer.rb | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/db/importers/common_metrics_importer.rb b/db/importers/common_metrics_importer.rb new file mode 100644 index 00000000000..6302394d7a6 --- /dev/null +++ b/db/importers/common_metrics_importer.rb @@ -0,0 +1,103 @@ +# frozen_string_literal: true + +module Importers + class PrometheusMetric < ActiveRecord::Base + enum group: { + # built-in groups + nginx_ingress: -1, + ha_proxy: -2, + aws_elb: -3, + nginx: -4, + kubernetes: -5, + + # custom groups + business: 0, + response: 1, + system: 2 + } + + scope :common, -> { where(common: true) } + + GROUP_TITLES = { + business: _('Business metrics (Custom)'), + response: _('Response metrics (Custom)'), + system: _('System metrics (Custom)'), + nginx_ingress: _('Response metrics (NGINX Ingress)'), + ha_proxy: _('Response metrics (HA Proxy)'), + aws_elb: _('Response metrics (AWS ELB)'), + nginx: _('Response metrics (NGINX)'), + kubernetes: _('System metrics (Kubernetes)') + }.freeze + end + + class CommonMetricsImporter + MissingQueryId = Class.new(StandardError) + + attr_reader :content + + def initialize(filename = 'common_metrics.yml') + @content = YAML.load_file(Rails.root.join('config', 'prometheus', filename)) + end + + def execute + PrometheusMetric.reset_column_information + + process_content do |id, attributes| + find_or_build_metric!(id) + .update!(**attributes) + end + end + + private + + def process_content(&blk) + content.map do |group| + process_group(group, &blk) + end + end + + def process_group(group, &blk) + attributes = { + group: find_group_title_key(group['group']) + } + + group['metrics'].map do |metric| + process_metric(metric, attributes, &blk) + end + end + + def process_metric(metric, attributes, &blk) + attributes = attributes.merge( + title: metric['title'], + y_label: metric['y_label']) + + metric['queries'].map do |query| + process_metric_query(query, attributes, &blk) + end + end + + def process_metric_query(query, attributes, &blk) + attributes = attributes.merge( + legend: query['label'], + query: query['query_range'], + unit: query['unit']) + + yield(query['id'], attributes) + end + + def find_or_build_metric!(id) + raise MissingQueryId unless id + + PrometheusMetric.common.find_by(identifier: id) || + PrometheusMetric.new(common: true, identifier: id) + end + + def find_group_title_key(title) + PrometheusMetric.groups[find_group_title(title)] + end + + def find_group_title(title) + PrometheusMetric::GROUP_TITLES.invert[title] + end + end +end |