ChgRequestController.java

@RestController
@RequestMapping("/crq")
public class ChgRequestController {

    private final ChgRequestService chgRequestService;

    @Autowired
    public ChgRequestController(ChgRequestService chgRequestService) {
        this.chgRequestService = chgRequestService;
    }

    @GetMapping(value = "/", produces = MediaType.APPLICATION_JSON_VALUE)
    public List<AppMetaDataResponse> getAll() {
        return chgRequestService.findAll()
                .stream()
                .map(ChgRequest::appMetaDataResponse)
                .collect(Collectors.toList());
    }

    @PostMapping(value = "/create", produces = MediaType.APPLICATION_JSON_VALUE, consumes = MediaType.APPLICATION_JSON_VALUE)
    public UUID createChgRequest(@RequestBody final CreateChgRequest createChgRequest) {
        return chgRequestService.createChgRequest(createChgRequest.getAppMetadata());
    }

    @GetMapping(value = "/{id}/begin")
    public void transitionBegin(@PathVariable final UUID id) {
        chgRequestService.beginChgRequest(id);
    }

    @GetMapping(value = "/{id}/done")
    public void transitionDone(@PathVariable final UUID id) {
        chgRequestService.doneChgRequest(id);
    }

    @GetMapping(value = "/{id}/rollback")
    public void transitionRollback(@PathVariable final UUID id) {
        chgRequestService.rollbackChgRequest(id);
    }

    @GetMapping(value = "/{id}")
    public AppMetaDataResponse displayMetadata(@PathVariable final UUID id) {
        return chgRequestService.findById(id).appMetaDataResponse();
    }
}