Examples with OPTIONAL org.osgi.service.component.annotations.ReferenceCardinality.OPTIONAL used on opensource projects

Example 1 with OPTIONAL

use of org.osgi.service.component.annotations.ReferenceCardinality.OPTIONAL in project com-liferay-apio-architect by liferay.

the class ErrorUtil method getErrorResponse.

/**
 * Transforms an exception into a {@code Response}.
 *
 * @param  exception the exception
 * @param  request the current request
 * @param  httpHeaders the current HTTP headers
 * @return the response
 */
public Response getErrorResponse(Exception exception, Request request, HttpHeaders httpHeaders) {
    Optional<APIError> apiErrorOptional = _exceptionConverterManager.convert(exception);
    if (!apiErrorOptional.isPresent()) {
        Class<? extends Exception> exceptionClass = exception.getClass();
        if (_apioLogger != null) {
            _apioLogger.warning("No exception converter found for " + exceptionClass);
        }
        if (exceptionClass.isAssignableFrom(WebApplicationException.class)) {
            WebApplicationException webApplicationException = (WebApplicationException) exception;
            return webApplicationException.getResponse();
        }
        return Response.serverError().build();
    }
    APIError apiError = apiErrorOptional.get();
    if (_apioLogger != null) {
        _apioLogger.error(apiError);
    }
    int statusCode = apiError.getStatusCode();
    Optional<ErrorMessageMapper> errorMessageMapperOptional = _errorMessageMapperManager.getErrorMessageMapperOptional(request);
    return errorMessageMapperOptional.map(errorMessageMapper -> {
        String result = ErrorWriter.writeError(errorMessageMapper, apiError, httpHeaders);
        return Response.status(statusCode).type(errorMessageMapper.getMediaType()).entity(result).build();
    }).orElseGet(() -> Response.status(statusCode).build());
}