jive-sdk
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Node.js SDK for Jive Software to assist with the development of add-ons
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<h1 class="page-title">Source: jive-sdk-api/lib/task/tasks.js</h1>
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<pre class="sunlight-highlight-javascript linenums">/*
* Copyright 2013 Jive Software
*
* Licensed 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.
*/
var jive = require('../../api');
var task = function( _runnable, _interval, _id ) {
if ( !_runnable ) {
throw 'A runnable function is required!';
}
return {
'handler' : _runnable,
'interval': _interval,
'id' : _id
};
};
/**
* API for managing recurrent tasks.
* @module tasks
*/
/**
* Schedules a recurrent task.
* @param {function} handler Required. This function is invoked when the task scheduling condtions are met.
* @param {number} interval Optional. Number of milliseconds in between recurrences of the handler being invoked.
* @param {String} id Optional. Unique identifier for the task.
* @returns {Object} a task object wrapping the provided parameters (handler, interval, id).
*/
exports.build = function(handler, interval, id) {
return new task( handler, interval, id );
};
/**
* @param {Object} task Required. Wrapper object for task characteristics.
* @param {function} task.handler Required. This function is invoked when the task scheduling conditions are met.
* @param {number} task.interval Optional. Number of milliseconds in between recurrences of the handler being invoked.
* @param {String} task.id Optional. Unique identifier for the task.
* @param {Object} scheduler Required. A scheduler strategy, similar to @see {@link memoryScheduler}.
* @returns {Promise} Promise Promise .resolve and .reject handlers will be called depending on the success or failure of the handler
* function when it is invoked.
*/
exports.schedule = function( task, scheduler ) {
if ( !task || typeof task !== 'object' ) {
throw Error("A task object is required.");
}
if ( !scheduler ) {
throw Error("A scheduler is required.");
}
if ( typeof scheduler['schedule'] !== 'function' ) {
throw Error("Invalid scheduler - requires a schedule function.");
}
var eventID = task['id'] || jive.util.guid();
var context = { 'eventListener' : '__jive_system_tasks' };
var interval = task['interval'];
jive.events.registerEventListener( eventID, task['handler'], {
'eventListener' : '__jive_system_tasks'
});
return scheduler.schedule(eventID, context, interval);
};
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Jive Software, Inc
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