8f78a9dcde
http://sambal.org/2014/02/passing-options-node-shebang-line/ was a cool trick but not needed at all. https://bitbucket.org/chromiumembedded/cef/issues/483/dont-always-add-the-expose-gc-v8-flag says it will change behavior in ways we don't want.
80 lines
2.3 KiB
JavaScript
Executable File
80 lines
2.3 KiB
JavaScript
Executable File
#!/usr/bin/env node
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'use strict';
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if (process.argv[2] === '--check') return console.log('OK');
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var assert = require('assert'),
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async = require('async'),
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backups = require('../backups.js'),
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database = require('../database.js'),
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debug = require('debug')('box:backupupload'),
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settings = require('../settings.js'),
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v8 = require('v8');
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function initialize(callback) {
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assert.strictEqual(typeof callback, 'function');
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async.series([
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database.initialize,
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settings.initCache
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], callback);
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}
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// Main process starts here
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const backupId = process.argv[2];
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const format = process.argv[3];
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const dataLayoutString = process.argv[4];
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debug(`Backing up ${dataLayoutString} to ${backupId}`);
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process.on('SIGTERM', function () {
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process.exit(0);
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});
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// this can happen when the backup task is terminated (not box code)
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process.on('disconnect', function () {
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debug('parent process died');
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process.exit(0);
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});
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// send progress every n seconds
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function throttledProgressCallback(msecs) {
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let lastProgress = null;
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return function (progress) {
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let now = Date.now();
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if (lastProgress && ((now - lastProgress) < msecs)) return;
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process.send(progress);
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lastProgress = now;
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};
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}
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// https://github.com/josefzamrzla/gc-heap-stats#readme
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// https://stackoverflow.com/questions/41541843/nodejs-v8-getheapstatistics-method
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function dumpMemoryInfo() {
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const mu = process.memoryUsage();
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const hs = v8.getHeapStatistics();
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debug(`v8 heap : used ${hs.used_heap_size} total: ${hs.total_heap_size} max: ${hs.heap_size_limit}`);
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debug(`process: rss: ${mu.rss} heapTotal: ${mu.heapTotal} heapUsed: ${mu.heapUsed} external: ${mu.external}`);
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}
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initialize(function (error) {
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if (error) throw error;
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dumpMemoryInfo();
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const timerId = setInterval(dumpMemoryInfo, 30000);
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backups.upload(backupId, format, dataLayoutString, throttledProgressCallback(5000), function resultHandler(error) {
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debug('upload completed. error: ', error);
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process.send({ result: error ? error.message : '' });
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clearInterval(timerId);
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// https://nodejs.org/api/process.html are exit codes used by node. apps.js uses the value below
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// to check apptask crashes
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process.exit(error ? 50 : 0);
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});
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});
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