Class: Kennel::Importer

Inherits:
Object
  • Object
show all
Defined in:
lib/kennel/importer.rb

Constant Summary collapse

TITLES = 
[:name, :title].freeze
SORT_ORDER = 
[*TITLES, :id, :kennel_id, :type, :tags, :query, *Syncer::TRACKING_FIELDS, :template_variables].freeze

Instance Method Summary collapse

Constructor Details

#initialize(api) ⇒ Importer

Returns a new instance of Importer.



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# File 'lib/kennel/importer.rb', line 8

def initialize(api)
  @api = api
end

Instance Method Details

#import(resource, id) ⇒ Object 



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# File 'lib/kennel/importer.rb', line 12

def import(resource, id)
  if ["screen", "dash"].include?(resource)
    raise ArgumentError, "resource 'screen' and 'dash' are deprecated, use 'dashboard'"
  end

  model =
    begin
      Kennel::Models.const_get(resource.capitalize)
    rescue NameError
      raise ArgumentError, "#{resource} is not supported"
    end

  data = @api.show(model.api_resource, id)
  id = data.fetch(:id) # keep native value
  model.normalize({}, data) # removes id
  data[:id] = id

  title_field = TITLES.detect { |f| data[f] }
  title = data.fetch(title_field)
  title.tr!(Kennel::Models::Record::LOCK, "") # avoid double lock icon

  # calculate or reuse kennel_id
  # TODO: this is copy-pasted from syncer, need to find a nice way to reuse it
  tracking_field = Syncer::TRACKING_FIELDS.detect { |f| data[f] }
  data[:kennel_id] =
    if tracking_field && data[tracking_field].sub!(/\n?-- Managed by kennel (\S+:\S+).*/, "")
      $1.split(":").last
    else
      Kennel::Utils.parameterize(title)
    end

  case resource
  when "monitor"
    # flatten monitor options so they are all on the base which is how Monitor builds them
    data.merge!(data.delete(:options))
    data.merge!(data.delete(:thresholds) || {})

    # clean up values that are the default
    data.delete(:notify_no_data) if data[:notify_no_data] # Monitor uses true by default
    data.delete(:notify_audit) unless data[:notify_audit] # Monitor uses false by default

    # keep all values that are settable
    data = data.slice(*model.instance_methods)

    # make query use critical method if it matches
    critical = data[:critical]
    query = data[:query]
    if query && critical
      query.sub!(/([><=]) (#{Regexp.escape(critical.to_f.to_s)}|#{Regexp.escape(critical.to_i.to_s)})$/, "\\1 \#{critical}")
    end

    data[:type] = "query alert" if data[:type] == "metric alert"
  when "dashboard"
    widgets = data[:widgets]&.flat_map { |widget| widget.dig(:definition, :widgets) || [widget] }
    widgets&.each { |widget| dry_up_query!(widget) }
  end

  data.delete(:tags) if data[:tags] == [] # do not create super + [] call

  # simplify template_variables to array of string when possible
  if vars = data[:template_variables]
    vars.map! { |v| v[:default] == "*" && v[:prefix] == v[:name] ? v[:name] : v }
  end

  pretty = pretty_print(data).lstrip.gsub("\\#", "#")
  <<~RUBY
    #{model.name}.new(
      self,
      #{pretty}
    )
  RUBY
end