freeCodeCamp/api-server/production-start.js

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// this ensures node understands the future
require('@babel/register');
const _ = require('lodash');
const createDebugger = require('debug');
const log = createDebugger('fcc:server:production-start');
const startTime = Date.now();
// force logger to always output
// this may be brittle
log.enabled = true;
// this is where server starts booting up
const app = require('./server');
let timeoutHandler;
let killTime = 15;
const onConnect = _.once(() => {
log('db connected in: %s', Date.now() - startTime);
if (timeoutHandler) {
clearTimeout(timeoutHandler);
}
app.start();
});
timeoutHandler = setTimeout(() => {
const message = `db did not connect after ${killTime}s -- crashing hard`;
// purposely shutdown server
// pm2 should restart this in production
throw new Error(message);
}, killTime * 1000);
app.dataSources.db.on('connected', onConnect);