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# frozen_string_literal: true
# Responsible for returning a filtered system dashboard
# containing only the default embedded metrics. In future,
# this class may be updated to support filtering to
# alternate metrics/panels.
#
# Why isn't this filtering in a processing stage? By filtering
# here, we ensure the dynamically-determined dashboard is cached.
#
# Use Gitlab::Metrics::Dashboard::Finder to retrive dashboards.
module Gitlab
module Metrics
module Dashboard
class DynamicDashboardService < Gitlab::Metrics::Dashboard::BaseService
# For the default filtering for embedded metrics,
# uses the 'id' key in dashboard-yml definition for
# identification.
DEFAULT_EMBEDDED_METRICS_IDENTIFIERS = %w(
system_metrics_kubernetes_container_memory_total
system_metrics_kubernetes_container_cores_total
).freeze
# Returns a new dashboard with only the matching
# metrics from the system dashboard, stripped of groups.
# @return [Hash]
def raw_dashboard
panels = panel_groups.each_with_object([]) do |group, panels|
matched_panels = group['panels'].select { |panel| matching_panel?(panel) }
panels.concat(matched_panels)
end
{ 'panel_groups' => [{ 'panels' => panels }] }
end
def cache_key
"dynamic_metrics_dashboard_#{metric_identifiers.join('_')}"
end
private
# Returns an array of the panels groups on the
# system dashboard
def panel_groups
Gitlab::Metrics::Dashboard::SystemDashboardService
.new(project, nil)
.raw_dashboard['panel_groups']
end
# Identifies a panel as "matching" if any metric ids in
# the panel is in the list of identifiers to collect.
def matching_panel?(panel)
panel['metrics'].any? do |metric|
metric_identifiers.include?(metric['id'])
end
end
def metric_identifiers
DEFAULT_EMBEDDED_METRICS_IDENTIFIERS
end
end
end
end
end
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