Examples with UnstructuredDataReactiveReader com.linkedin.restli.server.UnstructuredDataReactiveReader used on opensource projects

Example 1 with UnstructuredDataReactiveReader

use of com.linkedin.restli.server.UnstructuredDataReactiveReader in project rest.li by linkedin.

the class ArgumentBuilder method buildArgs.

/**
 * Build arguments for resource method invocation. Combines various types of arguments
 * into a single array.
 *
 * @param positionalArguments pass-through arguments coming from
 *          {@link RestLiArgumentBuilder}
 * @param resourceMethod the resource method
 * @param context {@link ResourceContext}
 * @param template {@link DynamicRecordTemplate}
 * @return array of method argument for method invocation.
 */
@SuppressWarnings("deprecation")
static Object[] buildArgs(final Object[] positionalArguments, final ResourceMethodDescriptor resourceMethod, final ServerResourceContext context, final DynamicRecordTemplate template, final ResourceMethodConfig resourceMethodConfig) {
    List<Parameter<?>> parameters = resourceMethod.getParameters();
    Object[] arguments = Arrays.copyOf(positionalArguments, parameters.size());
    fixUpComplexKeySingletonArraysInArguments(arguments);
    boolean attachmentsDesired = false;
    for (int i = positionalArguments.length; i < parameters.size(); ++i) {
        Parameter<?> param = parameters.get(i);
        try {
            if (param.getParamType() == Parameter.ParamType.KEY || param.getParamType() == Parameter.ParamType.ASSOC_KEY_PARAM) {
                Object value = context.getPathKeys().get(param.getName());
                if (value != null) {
                    arguments[i] = value;
                    continue;
                }
            } else if (param.getParamType() == Parameter.ParamType.CALLBACK) {
                continue;
            } else if (param.getParamType() == Parameter.ParamType.PARSEQ_CONTEXT_PARAM || param.getParamType() == Parameter.ParamType.PARSEQ_CONTEXT) {
                // don't know what to fill in yet
                continue;
            } else if (param.getParamType() == Parameter.ParamType.HEADER) {
                HeaderParam headerParam = param.getAnnotations().get(HeaderParam.class);
                String value = context.getRequestHeaders().get(headerParam.value());
                arguments[i] = value;
                continue;
            } else // we must evaluate based on the param type (annotation used)
            if (param.getParamType() == Parameter.ParamType.PROJECTION || param.getParamType() == Parameter.ParamType.PROJECTION_PARAM) {
                arguments[i] = context.getProjectionMask();
                continue;
            } else if (param.getParamType() == Parameter.ParamType.METADATA_PROJECTION_PARAM) {
                arguments[i] = context.getMetadataProjectionMask();
                continue;
            } else if (param.getParamType() == Parameter.ParamType.PAGING_PROJECTION_PARAM) {
                arguments[i] = context.getPagingProjectionMask();
                continue;
            } else if (param.getParamType() == Parameter.ParamType.CONTEXT || param.getParamType() == Parameter.ParamType.PAGING_CONTEXT_PARAM) {
                PagingContext ctx = RestUtils.getPagingContext(context, (PagingContext) param.getDefaultValue());
                arguments[i] = ctx;
                continue;
            } else if (param.getParamType() == Parameter.ParamType.PATH_KEYS || param.getParamType() == Parameter.ParamType.PATH_KEYS_PARAM) {
                arguments[i] = context.getPathKeys();
                continue;
            } else if (param.getParamType() == Parameter.ParamType.PATH_KEY_PARAM) {
                Object value = context.getPathKeys().get(param.getName());
                if (value != null) {
                    arguments[i] = value;
                    continue;
                }
            } else if (param.getParamType() == Parameter.ParamType.RESOURCE_CONTEXT || param.getParamType() == Parameter.ParamType.RESOURCE_CONTEXT_PARAM) {
                arguments[i] = context;
                continue;
            } else if (param.getParamType() == Parameter.ParamType.VALIDATOR_PARAM) {
                RestLiDataValidator validator = new RestLiDataValidator(resourceMethod.getResourceModel().getResourceClass().getAnnotations(), resourceMethod.getResourceModel().getValueClass(), resourceMethod.getMethodType());
                arguments[i] = validator;
                continue;
            } else if (param.getParamType() == Parameter.ParamType.RESTLI_ATTACHMENTS_PARAM) {
                arguments[i] = context.getRequestAttachmentReader();
                attachmentsDesired = true;
                continue;
            } else if (param.getParamType() == Parameter.ParamType.UNSTRUCTURED_DATA_WRITER_PARAM) {
                // The OutputStream is passed to the resource implementation in a synchronous call. Upon return of the
                // resource method, all the bytes would haven't written to the OutputStream. The EntityStream would have
                // contained all the bytes by the time data is requested. The ownership of the OutputStream is passed to
                // the ByteArrayOutputStreamWriter, which is responsible of closing the OutputStream if necessary.
                ByteArrayOutputStream out = new ByteArrayOutputStream();
                context.setResponseEntityStream(EntityStreams.newEntityStream(new ByteArrayOutputStreamWriter(out)));
                arguments[i] = new UnstructuredDataWriter(out, context);
                continue;
            } else if (param.getParamType() == Parameter.ParamType.UNSTRUCTURED_DATA_REACTIVE_READER_PARAM) {
                arguments[i] = new UnstructuredDataReactiveReader(context.getRequestEntityStream(), context.getRawRequest().getHeader(RestConstants.HEADER_CONTENT_TYPE));
                continue;
            } else if (param.getParamType() == Parameter.ParamType.POST) {
                // handle action parameters
                if (template != null) {
                    DataMap data = template.data();
                    if (data.containsKey(param.getName())) {
                        arguments[i] = template.getValue(param);
                        continue;
                    }
                }
            } else if (param.getParamType() == Parameter.ParamType.QUERY) {
                Object value;
                if (DataTemplate.class.isAssignableFrom(param.getType())) {
                    value = buildDataTemplateArgument(context.getStructuredParameter(param.getName()), param, resourceMethodConfig.shouldValidateQueryParams());
                } else {
                    value = buildRegularArgument(context, param, resourceMethodConfig.shouldValidateQueryParams());
                }
                if (value != null) {
                    arguments[i] = value;
                    continue;
                }
            } else if (param.getParamType() == Parameter.ParamType.BATCH || param.getParamType() == Parameter.ParamType.RESOURCE_KEY) {
                // should not come to this routine since it should be handled by passing in positionalArguments
                throw new RoutingException("Parameter '" + param.getName() + "' should be passed in as a positional argument", HttpStatus.S_400_BAD_REQUEST.getCode());
            } else {
                // unknown param type
                throw new RoutingException("Parameter '" + param.getName() + "' has an unknown parameter type '" + param.getParamType().name() + "'", HttpStatus.S_400_BAD_REQUEST.getCode());
            }
        } catch (TemplateRuntimeException e) {
            throw new RoutingException("Parameter '" + param.getName() + "' is invalid", HttpStatus.S_400_BAD_REQUEST.getCode());
        }
        try {
            // check if it is optional parameter
            if (param.isOptional() && param.hasDefaultValue()) {
                arguments[i] = param.getDefaultValue();
            } else if (param.isOptional() && !param.getType().isPrimitive()) {
                // optional primitive parameter must have default value or provided
                arguments[i] = null;
            } else {
                throw new RoutingException("Parameter '" + param.getName() + "' is required", HttpStatus.S_400_BAD_REQUEST.getCode());
            }
        } catch (ResourceConfigException e) {
            // Parameter default value format exception should result in server error code 500.
            throw new RestLiServiceException(HttpStatus.S_500_INTERNAL_SERVER_ERROR, "Parameter '" + param.getName() + "' default value is invalid", e);
        }
    }
    // that were not needed is safe, but not for request attachments.
    if (!attachmentsDesired && context.getRequestAttachmentReader() != null) {
        throw new RestLiServiceException(HttpStatus.S_400_BAD_REQUEST, "Resource method endpoint invoked does not accept any request attachments.");
    }
    return arguments;
}