Package uk.ac.manchester.spinnaker.alloc.web

Interface BackgroundSupport.BackgroundAction

Enclosing class:
BackgroundSupport
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface protected static interface BackgroundSupport.BackgroundAction
An action that produces a response, usually handled asynchronously. Care should be taken as the action may be run on a thread other than the thread that creates it.
Author:
Donal Fellows

  • Method Summary

    Modifier and Type
    Method
    Description
    Object
    respond()
    Does the action that produces the result.

  • Method Details

    • respond

      Object respond() throws RequestFailedException, Exception
      Does the action that produces the result.
      Returns:
      The result of the action. A null is mapped as a generic 404 with no special message. Custom messages should be supported by throwing a suitable RequestFailedException. If the result is not a Response and not a Throwable, it will be returned as the entity that populates a 200 OK (and so must be convertible to JSON).
      Throws:
      RequestFailedException - If anything goes wrong. This is the expected exception type; it is not logged.
      Exception - If anything goes wrong. This is reported as an unexpected exception and logged.