Method: Vines::Services::CouchModels::System.find_by_names

Defined in:
lib/vines/services/storage/couchdb/system.rb

.find_by_names(names) ⇒ Object

Return an Array of Systems with the given names. This method efficiently bulk loads systems and their services much more quickly than loading systems one by one. Note that the systems returned by this method do not have their ohai data loaded because it’s expensive.



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# File 'lib/vines/services/storage/couchdb/system.rb', line 120

def self.find_by_names(names)
  keys = names.map {|name| [1, name.downcase] }
  rows = database.view(VIEW_NAME, reduce: false, keys: keys)['rows'] rescue []
  ids = rows.map {|row| row['value'] }.uniq
  services = Service.all.keys(ids).to_a
  by_id = Hash[services.map {|s| [s.id, s] }]
  by_name = Hash.new do |h, k|
    h[k] = System.new(id: "system:#{k}").tap do |system|
      system.services = []
    end
  end
  rows.each do |row|
    name = row['key'][1]
    service = by_id[row['value']]
    by_name[name].services << service
  end
  by_name.values
end