Run_plugin endpoint in the Rest API should return a valid error when an incorrect graph_id is supplied

Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Running the latest version of Constellation
  • Attached the Support Package via Help > Support Package
  • Checked the FAQs: https://github.com/constellation-app/constellation/wiki/FAQ
  • Checked that your issue isn’t already filed: https://github.com/constellation-app/constellation/issues
  • Checked that there is not already a module that provides the described functionality: https://github.com/constellation-app/constellation/wiki/Catalogue-of-Repositories

Description

If you specify an invalid value for graph_id - The id of a graph to run the plugin on (optional) it doesn’t run the plugin, but returns 200, as if it was successful. Instead it should return error 422. (The valid graph_id could be retrieved from the get_graph endpoint.)

Steps to Reproduce

1. Load the Rest API (Tools-Start REST Server)
2. Try out POST - run_plugin with an invalid text for graph_id

Expected behaviour: Return error 422.

Actual behaviour: Returns 200, as if it was successful.

Reproduces how often: 100%

Additional Information

[Auriga2]

I managed to get it to work by passing the HttpServletResponse response object to the services classes. But tricky to refactor the FileListener.java class.

[arcturus2]

No worries thank you @Auriga2. FileListener is involved to get working and OK to skip at this point.