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# frozen_string_literal: true
# Ingest YAML fragment with metrics dashboard panel definition
# https://docs.gitlab.com/ee/operations/metrics/dashboards/yaml.html#panel-panels-properties
# process it and returns renderable json version
module Metrics
module Dashboard
class PanelPreviewService
SEQUENCE = [
::Gitlab::Metrics::Dashboard::Stages::CommonMetricsInserter,
::Gitlab::Metrics::Dashboard::Stages::MetricEndpointInserter,
::Gitlab::Metrics::Dashboard::Stages::PanelIdsInserter,
::Gitlab::Metrics::Dashboard::Stages::AlertsInserter,
::Gitlab::Metrics::Dashboard::Stages::UrlValidator
].freeze
HANDLED_PROCESSING_ERRORS = [
Gitlab::Metrics::Dashboard::Errors::DashboardProcessingError,
Gitlab::Config::Loader::Yaml::NotHashError,
Gitlab::Config::Loader::Yaml::DataTooLargeError,
Gitlab::Config::Loader::FormatError
].freeze
def initialize(project, panel_yaml, environment)
@project = project
@panel_yaml = panel_yaml
@environment = environment
end
def execute
dashboard = ::Gitlab::Metrics::Dashboard::Processor.new(project, dashboard_structure, SEQUENCE, environment: environment).process
ServiceResponse.success(payload: dashboard[:panel_groups][0][:panels][0])
rescue *HANDLED_PROCESSING_ERRORS => error
ServiceResponse.error(message: error.message)
end
private
attr_accessor :project, :panel_yaml, :environment
def dashboard_structure
{
panel_groups: [
{
panels: [panel_hash]
}
]
}
end
def panel_hash
::Gitlab::Config::Loader::Yaml.new(panel_yaml).load_raw!
end
end
end
end
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