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* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import MetricsController from './MetricsController.js';
import ManifestParsing from '../utils/ManifestParsing.js';
import MetricsReportingEvents from '../MetricsReportingEvents.js';
import FactoryMaker from '../../../core/FactoryMaker.js';
function MetricsCollectionController(config) {
config = config || {};
let instance;
let metricsControllers = {};
let context = this.context;
let eventBus = config.eventBus;
const events = config.events;
function update(e) {
if (e.error) {
return;
}
// start by assuming all existing controllers need removing
let controllersToRemove = Object.keys(metricsControllers);
const metrics = ManifestParsing(context).getInstance({
adapter: config.adapter,
constants: config.constants
}).getMetrics(e.manifest);
metrics.forEach(m => {
const key = JSON.stringify(m);
if (!metricsControllers.hasOwnProperty(key)) {
try {
let controller = MetricsController(context).create(config);
controller.initialize(m);
metricsControllers[key] = controller;
} catch (e) {
// fail quietly
}
} else {
// we still need this controller - delete from removal list
controllersToRemove.splice(key, 1);
}
});
// now remove the unwanted controllers
controllersToRemove.forEach(c => {
metricsControllers[c].reset();
delete metricsControllers[c];
});
eventBus.trigger(MetricsReportingEvents.METRICS_INITIALISATION_COMPLETE);
}
function resetMetricsControllers() {
Object.keys(metricsControllers).forEach(key => {
metricsControllers[key].reset();
});
metricsControllers = {};
}
function setup() {
eventBus.on(events.MANIFEST_UPDATED, update, instance);
eventBus.on(events.STREAM_TEARDOWN_COMPLETE, resetMetricsControllers, instance);
}
function reset() {
eventBus.off(events.MANIFEST_UPDATED, update, instance);
eventBus.off(events.STREAM_TEARDOWN_COMPLETE, resetMetricsControllers, instance);
}
instance = {
reset: reset
};
setup();
return instance;
}
MetricsCollectionController.__dashjs_factory_name = 'MetricsCollectionController';
export default FactoryMaker.getClassFactory(MetricsCollectionController);
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