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