UUID parameters don't have format "uuid"

I’m using springfox 2.8.0.

The following piece of code:

@RestController
public class NotificationApi {
@ApiOperation(nickname = "markNotificationDelivered", value = "Mark a notification as delivered.")
    @RequestMapping(path = "notifications/{id}/delivered", method = RequestMethod.POST)
    void markNotificationDelivered(@PathVariable("id") UUID id) {

    }
}

is converted to:

"/notifications/{id}/delivered" : {
      "post" : {
        "tags" : [ "notification-api" ],
        "summary" : "Mark a notification as delivered.",
        "operationId" : "markNotificationDelivered",
        "schemes" : [ ],
        "consumes" : [ "application/json" ],
        "produces" : [ "*/*" ],
        "parameters" : [ {
          "name" : "id",
          "in" : "path",
          "description" : "",
          "required" : true,
          "type" : "string"
        } ],
        "responses" : {
          "200" : {
            "description" : "OK",
            "examples" : { },
            "headers" : { }
          }
        },
        "security" : [ ]
      }
    }

The problem is that parameter id doesn’t have "format": "uuid" set. When I annotate the parameter with @ApiParam(format = "uuid") @PathVariable("id"), there is still no format in the Swaggerfile.

[dominik-jastrzebski]

I managed to hotfix this with plugins:

@Component
public class ApiModelPropertyBuilderExtensions implements ModelBuilderPlugin {

    @Override
    public void apply(ModelContext context) {
        Map<String, ModelProperty> updatedProperties =
                modelPropertiesWithUpdatedResolvedTypes(context.getBuilder().build().getProperties());
        context.getBuilder().properties(updatedProperties);
    }

    private Map<String, ModelProperty> modelPropertiesWithUpdatedResolvedTypes(
            Map<String, ModelProperty> originalModelProperties) {
        return originalModelProperties.entrySet().stream().map(entry -> {
            ModelProperty modelProperty = entry.getValue();
            modelProperty.updateModelRef(resolvedType -> {
                if (resolvedType != null && resolvedType.isInstanceOf(UUID.class)) {
                    return new ModelRef("uuid");
                } else {
                    return modelProperty.getModelRef();
                }
            });
            return new AbstractMap.SimpleEntry<>(entry.getKey(), modelProperty);
        }).collect(Collectors.toMap(AbstractMap.SimpleEntry::getKey, AbstractMap.SimpleEntry::getValue));
    }

    @Override
    public boolean supports(DocumentationType delimiter) {
        return true;
    }
}

@Component
public class ApiParametersBuilderExtensions implements ParameterBuilderPlugin {

    @Override
    public void apply(ParameterContext parameterContext) {
        ParameterBuilder parameterBuilder = parameterContext.parameterBuilder();
        ResolvedMethodParameter methodParameter = parameterContext.resolvedMethodParameter();
        ResolvedType parameterType = methodParameter.getParameterType();

        if (parameterType.isInstanceOf(UUID.class)) {
            parameterBuilder.modelRef(new ModelRef("uuid"));
        }
    }

    @Override
    public boolean supports(DocumentationType delimiter) {
        return true;
    }
}

[dilipkrish]

That would be an issue for Swagger-ui