MapFilter elasticsearch locations importer

elasticsearch_locations_importer.rb

class ElasticsearchLocationsImporter
  def call
    ElasticsearchImporter.new(
      index_alias: 'locations',
      mapping: mapping,
      payload: locations_body
    ).call
  end

  private

  def mapping
    { location:
      { properties:
        { coordinates:
          { type: 'geo_shape',
            precision: '10.0m',
            points_only: true } } } }
  end

  def locations_body
    data = []
    (51.272..51.449).step(0.002).each do |lat|
      (0.008..0.180).step(0.002).each do |lng|
        data << [{ index: { _index: 'locations', _type: 'location' } },
                 { coordinates:
                   { type: :point,
                     coordinates: [lng.round(3), lat.round(3)] } }]
      end
    end
    data.flatten!
  end
end