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# frozen_string_literal: true
class PrometheusAlert < ApplicationRecord
include Sortable
OPERATORS_MAP = {
lt: "<",
eq: "==",
gt: ">"
}.freeze
belongs_to :environment, validate: true, inverse_of: :prometheus_alerts
belongs_to :project, validate: true, inverse_of: :prometheus_alerts
belongs_to :prometheus_metric, validate: true, inverse_of: :prometheus_alerts
has_many :prometheus_alert_events, inverse_of: :prometheus_alert
has_many :related_issues, through: :prometheus_alert_events
after_save :clear_prometheus_adapter_cache!
after_destroy :clear_prometheus_adapter_cache!
validates :environment, :project, :prometheus_metric, presence: true
validate :require_valid_environment_project!
validate :require_valid_metric_project!
enum operator: { lt: 0, eq: 1, gt: 2 }
delegate :title, :query, to: :prometheus_metric
scope :for_metric, -> (metric) { where(prometheus_metric: metric) }
scope :for_project, -> (project) { where(project_id: project) }
scope :for_environment, -> (environment) { where(environment_id: environment) }
def self.distinct_projects
sub_query = self.group(:project_id).select(1)
self.from(sub_query)
end
def self.operator_to_enum(op)
OPERATORS_MAP.invert.fetch(op)
end
def full_query
"#{query} #{computed_operator} #{threshold}"
end
def computed_operator
OPERATORS_MAP.fetch(operator.to_sym)
end
def to_param
{
"alert" => title,
"expr" => full_query,
"for" => "5m",
"labels" => {
"gitlab" => "hook",
"gitlab_alert_id" => prometheus_metric_id
}
}
end
private
def clear_prometheus_adapter_cache!
environment.clear_prometheus_reactive_cache!(:additional_metrics_environment)
end
def require_valid_environment_project!
return if project == environment&.project
errors.add(:environment, "invalid project")
end
def require_valid_metric_project!
return if prometheus_metric&.common?
return if project == prometheus_metric&.project
errors.add(:prometheus_metric, "invalid project")
end
end
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