gistfile1.scala

  def listing(docRoot: String, app: Application, sc: ServletConfig): Option[Map[String, ApiListing]] = {
    var _cache: Option[Map[String, ApiListing]] = None

    _cache.orElse{
      LOGGER.debug("loading cache")
      ClassReaders.reader.map{reader => 
        ScannerFactory.scanner.map(scanner => {
          val classes = scanner match {
            case scanner: JaxrsScanner => scanner.asInstanceOf[JaxrsScanner].classesFromContext(app, null)
            case _ => List()
          }
          // For each top level resource, parse it and look for swagger annotations.
          val listings = (for(cls <- classes) yield reader.read(docRoot, cls, ConfigFactory.config)).flatten.toList
          val mergedListings = groupByResourcePath(listings)
          _cache = Some((mergedListings.map(m => {
            // always start with "/"
            val resourcePath = m.resourcePath.startsWith ("/") match {
              case true => m.resourcePath
              case false => "/" + m.resourcePath
            }
            LOGGER.debug("adding resource path " + resourcePath)
            (resourcePath, m)
          })).toMap)
        })
//      }
      _cache
    }
    if(_cache != None)
      LOGGER.debug("cache has " + _cache.get.keys + " keys")
    else
      LOGGER.debug("cache is empty")
    _cache
  }