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pa11y.js
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pa11y.js
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// This file is part of Pa11y Webservice.
//
// Pa11y Webservice is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Pa11y Webservice is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Pa11y Webservice. If not, see <http://www.gnu.org/licenses/>.
'use strict';
const async = require('async');
const {green, grey, red} = require('kleur');
const {CronJob} = require('cron');
module.exports = initTask;
exports.runPa11yOnTasks = runPa11yOnTasks;
function initTask(config, app) {
if (!config.cron) {
config.cron = '0 30 0 * * *'; // 00:30 daily
}
const job = new CronJob(config.cron, taskRunner.bind(null, app));
job.start();
}
async function taskRunner(app) {
console.log('');
console.log(grey('Starting to run task @ %s'), new Date());
try {
const tasks = await app.model.task.getAll();
runPa11yOnTasks(tasks, app);
} catch (error) {
console.error(red('Failed to run task: %s'), error.message);
console.log('');
process.exit(1);
}
}
function runPa11yOnTasks(tasks, app) {
if (tasks.length === 0) {
console.log('No pa11y tasks to run');
return;
}
const worker = async task => {
console.log('Starting pa11y task %s', task.id);
try {
await app.model.task.runById(task.id);
console.log(green('Finished pa11y task %s'), task.id);
} catch (error) {
console.log(red('Failed to finish pa11y task %s: %s'), task.id, error.message);
}
};
const queue = async.queue(worker, app.config.numWorkers);
queue.push(tasks);
queue.drain(() => {
console.log(grey('Finished running pa11y tasks @ %s'), new Date());
});
}