def addAdminRoutes()

in http-server/src/main/scala/com/twitter/finatra/http/routing/AdminHttpRouter.scala [30:84]
46 lines of code
4 McCabe index (conditional complexity)

  def addAdminRoutes(
    server: AdminHttpServer,
    router: HttpRouter,
    twitterServerAdminRoutes: Seq[AdminHttpServer.Route]
  ): Unit = {
    val allTwitterServerAdminRoutes = twitterServerAdminRoutes.map(_.path).union(HttpMuxer.patterns)
    val duplicates = allTwitterServerAdminRoutes.intersect(router.routesByType.admin.map(_.path))
    if (duplicates.nonEmpty) {
      val errorMsg = "Duplicating pre-defined TwitterServer AdminHttpServer routes is not allowed."
      val message = "The following routes are duplicates of pre-defined TwitterServer admin routes:"
      error(s"$message \n\t${duplicates.mkString("\n\t")}")
      error(errorMsg)
      throw new java.lang.AssertionError(errorMsg)
    }

    // Partition routes into admin index routes and admin rich handler routes
    val (adminIndexRoutes, adminRichHandlerRoutes) = router.routesByType.admin.partition { route =>
      // admin index routes cannot start with /admin/finatra/ and must be a constant route
      !route.path.startsWith(HttpRouter.FinatraAdminPrefix) && route.constantRoute
    }

    // Run linting rule for routes
    GlobalRules.get.add(
      Rule(
        Category.Configuration,
        "Non-indexable HTTP Admin Interface Finatra Routes",
        s"""Only constant /GET or /POST routes prefixed with "/admin" that DO NOT begin
           |with "${HttpRouter.FinatraAdminPrefix}" can be added to the TwitterServer
           |HTTP Admin Interface index.""".stripMargin
      ) {
        Seq(
          checkRoutesWithRouteIndex(adminRichHandlerRoutes) { _ =>
            true
          },
          checkRoutesWithRouteIndex(adminIndexRoutes) { !canIndexRoute(_) }
        ).flatten
      }
    )

    // Add constant routes to admin index
    server
      .addAdminRoutes(
        toAdminHttpServerRoutes(adminIndexRoutes, router)
          .map(AdminThreadPoolFilter.isolateRoute)
      )

    // Add rich handler for all other routes
    if (adminRichHandlerRoutes.nonEmpty) {
      HttpMuxer
        .addRichHandler(
          HttpRouter.FinatraAdminPrefix,
          AdminThreadPoolFilter.isolateService(router.services.adminService)
        )
    }
  }