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# frozen_string_literal: true
class PrometheusMetric < ApplicationRecord
belongs_to :project, validate: true, inverse_of: :prometheus_metrics
has_many :prometheus_alerts, inverse_of: :prometheus_metric
enum group: PrometheusMetricEnums.groups
validates :title, presence: true
validates :query, presence: true
validates :group, presence: true
validates :y_label, presence: true
validates :unit, presence: true
validates :identifier, uniqueness: { scope: :project_id }, allow_nil: true
validates :project, presence: true, unless: :common?
validates :project, absence: true, if: :common?
scope :for_project, -> (project) { where(project: project) }
scope :for_group, -> (group) { where(group: group) }
scope :for_title, -> (title) { where(title: title) }
scope :for_y_label, -> (y_label) { where(y_label: y_label) }
scope :for_identifier, -> (identifier) { where(identifier: identifier) }
scope :common, -> { where(common: true) }
scope :ordered, -> { reorder(created_at: :asc) }
def priority
group_details(group).fetch(:priority)
end
def group_title
group_details(group).fetch(:group_title)
end
def required_metrics
group_details(group).fetch(:required_metrics, []).map(&:to_s)
end
def to_query_metric
Gitlab::Prometheus::Metric.new(id: id, title: title, required_metrics: required_metrics, weight: 0, y_label: y_label, queries: queries)
end
def to_metric_hash
queries.first.merge(metric_id: id)
end
def queries
[
{
query_range: query,
unit: unit,
label: legend,
series: query_series
}.compact
]
end
def query_series
case legend
when 'Status Code'
[{
label: 'status_code',
when: [
{ value: '2xx', color: 'green' },
{ value: '4xx', color: 'orange' },
{ value: '5xx', color: 'red' }
]
}]
end
end
private
def group_details(group)
PrometheusMetricEnums.group_details.fetch(group.to_sym)
end
end
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