diff options
Diffstat (limited to 'lib/gitlab/prometheus/queries/matched_metrics_query.rb')
-rw-r--r-- | lib/gitlab/prometheus/queries/matched_metrics_query.rb | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/lib/gitlab/prometheus/queries/matched_metrics_query.rb b/lib/gitlab/prometheus/queries/matched_metrics_query.rb new file mode 100644 index 00000000000..d4894c87f8d --- /dev/null +++ b/lib/gitlab/prometheus/queries/matched_metrics_query.rb @@ -0,0 +1,80 @@ +module Gitlab + module Prometheus + module Queries + class MatchedMetricsQuery < BaseQuery + MAX_QUERY_ITEMS = 40.freeze + + def query + groups_data.map do |group, data| + { + group: group.name, + priority: group.priority, + active_metrics: data[:active_metrics], + metrics_missing_requirements: data[:metrics_missing_requirements] + } + end + end + + private + + def groups_data + metrics_groups = groups_with_active_metrics(Gitlab::Prometheus::MetricGroup.all) + lookup = active_series_lookup(metrics_groups) + + groups = {} + + metrics_groups.each do |group| + groups[group] ||= { active_metrics: 0, metrics_missing_requirements: 0 } + active_metrics = group.metrics.count { |metric| metric.required_metrics.all?(&lookup.method(:has_key?)) } + + groups[group][:active_metrics] += active_metrics + groups[group][:metrics_missing_requirements] += group.metrics.count - active_metrics + end + + groups + end + + def active_series_lookup(metric_groups) + timeframe_start = 8.hours.ago + timeframe_end = Time.now + + series = metric_groups.flat_map(&:metrics).flat_map(&:required_metrics).uniq + + lookup = series.each_slice(MAX_QUERY_ITEMS).flat_map do |batched_series| + client_series(*batched_series, start: timeframe_start, stop: timeframe_end) + .select(&method(:has_matching_label)) + .map { |series_info| [series_info['__name__'], true] } + end + lookup.to_h + end + + def has_matching_label(series_info) + series_info.key?('environment') + end + + def available_metrics + @available_metrics ||= client_label_values || [] + end + + def filter_active_metrics(metric_group) + metric_group.metrics.select! do |metric| + metric.required_metrics.all?(&available_metrics.method(:include?)) + end + metric_group + end + + def groups_with_active_metrics(metric_groups) + metric_groups.map(&method(:filter_active_metrics)).select { |group| group.metrics.any? } + end + + def metrics_with_required_series(metric_groups) + metric_groups.flat_map do |group| + group.metrics.select do |metric| + metric.required_metrics.all?(&available_metrics.method(:include?)) + end + end + end + end + end + end +end |