Examples with BadRequestException com.google.api.server.spi.response.BadRequestException used on opensource projects

Example 11 with BadRequestException

use of com.google.api.server.spi.response.BadRequestException in project endpoints-java by cloudendpoints.

the class SystemService method invokeServiceMethod.

/**
 * Invokes a {@code method} on a {@code service} given a {@code paramReader} to read parameters
 * and a {@code resultWriter} to write result.
 */
public void invokeServiceMethod(Object service, Method method, ParamReader paramReader, ResultWriter resultWriter) throws IOException {
    try {
        Object[] params = paramReader.read();
        logger.atFine().log("params=%s (String)", Arrays.toString(params));
        Object response = method.invoke(service, params);
        resultWriter.write(response);
    } catch (IllegalArgumentException | IllegalAccessException e) {
        logger.atSevere().withCause(e).log("exception occurred while calling backend method");
        resultWriter.writeError(new BadRequestException(e));
    } catch (InvocationTargetException e) {
        Throwable cause = e.getCause();
        Level level = Level.INFO;
        if (cause instanceof ServiceException) {
            resultWriter.writeError((ServiceException) cause);
        } else if (cause instanceof IllegalArgumentException) {
            resultWriter.writeError(isIllegalArgumentBackendError ? new InternalServerErrorException(cause) : new BadRequestException(cause));
        } else if (isOAuthRequestException(cause.getClass())) {
            resultWriter.writeError(new UnauthorizedException(cause));
        } else if (cause.getCause() != null && cause.getCause() instanceof ServiceException) {
            ServiceException serviceException = (ServiceException) cause.getCause();
            level = serviceException.getLogLevel();
            resultWriter.writeError(serviceException);
        } else {
            level = Level.SEVERE;
            resultWriter.writeError(new InternalServerErrorException(cause));
        }
        logger.at(level).withCause(cause).log("exception occurred while calling backend method");
    } catch (ServiceException e) {
        logger.at(e.getLogLevel()).withCause(e).log("exception occurred while calling backend method");
        resultWriter.writeError(e);
    }
}