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|
# frozen_string_literal: true
module Gitlab
module Alerting
class Alert
include ActiveModel::Model
include Gitlab::Utils::StrongMemoize
include Presentable
attr_accessor :project, :payload
def gitlab_alert
strong_memoize(:gitlab_alert) do
parse_gitlab_alert_from_payload
end
end
def metric_id
strong_memoize(:metric_id) do
payload&.dig('labels', 'gitlab_alert_id')
end
end
def gitlab_prometheus_alert_id
strong_memoize(:gitlab_prometheus_alert_id) do
payload&.dig('labels', 'gitlab_prometheus_alert_id')
end
end
def title
strong_memoize(:title) do
gitlab_alert&.title || parse_title_from_payload
end
end
def description
strong_memoize(:description) do
parse_description_from_payload
end
end
def environment
strong_memoize(:environment) do
gitlab_alert&.environment || parse_environment_from_payload
end
end
def annotations
strong_memoize(:annotations) do
parse_annotations_from_payload || []
end
end
def starts_at
strong_memoize(:starts_at) do
parse_datetime_from_payload('startsAt')
end
end
def starts_at_raw
strong_memoize(:starts_at_raw) do
payload&.dig('startsAt')
end
end
def ends_at
strong_memoize(:ends_at) do
parse_datetime_from_payload('endsAt')
end
end
def full_query
strong_memoize(:full_query) do
gitlab_alert&.full_query || parse_expr_from_payload
end
end
def y_label
strong_memoize(:y_label) do
parse_y_label_from_payload || title
end
end
def alert_markdown
strong_memoize(:alert_markdown) do
parse_alert_markdown_from_payload
end
end
def status
strong_memoize(:status) do
payload&.dig('status')
end
end
def firing?
status == 'firing'
end
def resolved?
status == 'resolved'
end
def gitlab_managed?
metric_id.present?
end
def gitlab_fingerprint
Digest::SHA1.hexdigest(plain_gitlab_fingerprint)
end
def valid?
payload.respond_to?(:dig) && project && title && starts_at
end
def present
super(presenter_class: Projects::Prometheus::AlertPresenter)
end
private
def plain_gitlab_fingerprint
if gitlab_managed?
[metric_id, starts_at].join('/')
else # self managed
[starts_at, title, full_query].join('/')
end
end
def parse_environment_from_payload
environment_name = payload&.dig('labels', 'gitlab_environment_name')
return unless environment_name
EnvironmentsFinder.new(project, nil, { name: environment_name })
.find
&.first
end
def parse_gitlab_alert_from_payload
alerts_found = matching_gitlab_alerts
return if alerts_found.blank? || alerts_found.size > 1
alerts_found.first
end
def matching_gitlab_alerts
return unless metric_id || gitlab_prometheus_alert_id
Projects::Prometheus::AlertsFinder
.new(project: project, metric: metric_id, id: gitlab_prometheus_alert_id)
.execute
end
def parse_title_from_payload
payload&.dig('annotations', 'title') ||
payload&.dig('annotations', 'summary') ||
payload&.dig('labels', 'alertname')
end
def parse_description_from_payload
payload&.dig('annotations', 'description')
end
def parse_annotations_from_payload
payload&.dig('annotations')&.map do |label, value|
Alerting::AlertAnnotation.new(label: label, value: value)
end
end
def parse_datetime_from_payload(field)
value = payload&.dig(field)
return unless value
Time.rfc3339(value)
rescue ArgumentError
end
# Parses `g0.expr` from `generatorURL`.
#
# Example: http://localhost:9090/graph?g0.expr=vector%281%29&g0.tab=1
def parse_expr_from_payload
url = payload&.dig('generatorURL')
return unless url
uri = URI(url)
Rack::Utils.parse_query(uri.query).fetch('g0.expr')
rescue URI::InvalidURIError, KeyError
end
def parse_alert_markdown_from_payload
payload&.dig('annotations', 'gitlab_incident_markdown')
end
def parse_y_label_from_payload
payload&.dig('annotations', 'gitlab_y_label')
end
end
end
end
|
