96 lines
3.0 KiB
JavaScript
96 lines
3.0 KiB
JavaScript
/**
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* @license
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*/
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/**
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* @fileoverview Base OSAPI binding.
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* This file was copied from
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* http://svn.apache.org/repos/asf/shindig/trunk/features/src/main/javascript/features/shindig.container/osapi.js
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* and it's slightly modified for Closure.
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*/
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goog.provide('goog.osapi');
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// Expose osapi from container side.
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var osapi = osapi || {};
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goog.exportSymbol('osapi', osapi);
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/** @type {Function} */
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osapi.callback;
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/**
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* Dispatch a JSON-RPC batch request to services defined in the osapi namespace
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* @param {Array.<Object>} requests an array of rpc requests.
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*/
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goog.osapi.handleGadgetRpcMethod = function(requests) {
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var responses = new Array(requests.length);
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var callCount = 0;
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var callback = osapi.callback;
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var dummy = function(params, apiCallback) {
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apiCallback({});
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};
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for (var i = 0; i < requests.length; i++) {
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// Don't allow underscores in any part of the method name as a
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// convention for restricted methods
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var current = osapi;
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if (requests[i]['method'].indexOf('_') == -1) {
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var path = requests[i]['method'].split('.');
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for (var j = 0; j < path.length; j++) {
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if (current.hasOwnProperty(path[j])) {
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current = current[path[j]];
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} else {
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// No matching api
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current = dummy;
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break;
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}
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}
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} else {
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current = dummy;
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}
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// Execute the call and latch the rpc callback until all
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// complete
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current(requests[i]['params'], function(i) {
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return function(response) {
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// Put back in json-rpc format
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responses[i] = {'id': requests[i].id, 'data': response};
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callCount++;
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if (callCount == requests.length) {
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callback(responses);
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}
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};
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}(i));
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}
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};
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/**
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* Initializes container side osapi binding.
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*/
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goog.osapi.init = function() {
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// Container-side binding for the gadgetsrpctransport used by osapi.
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// Containers add services to the client-side osapi implementation by
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// defining them in the osapi namespace
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if (gadgets && gadgets.rpc) { // Only define if gadgets rpc exists.
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// Register the osapi RPC dispatcher.
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gadgets.rpc.register('osapi._handleGadgetRpcMethod',
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/** @type {!Function} */ (goog.osapi.handleGadgetRpcMethod));
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}
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};
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