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Exit on startup when MongoDB connection fails #223

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Exit on startup when MongoDB connection fails #223

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5 changes: 3 additions & 2 deletions app.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ const http = require('http');
const compress = require('compression');
const cors = require('cors');

const db = require('./models/db')(process.env.spec);
const db = require('./models/db')
const index = require('./routes/index');
const api = require('./routes/api');
const stats = require('./routes/stats');
Expand All @@ -16,7 +16,6 @@ const store = require('./store');

const app = express();
const server = http.createServer(app);
require('./sockets.js')(server);

// view engine setup
app.set('views', path.join(__dirname, '.viewsMin'));
Expand Down Expand Up @@ -53,7 +52,9 @@ app.use((err, req, res, next) => {

// Load and initialize generators before starting server
(async() => {
await db(process.env.spec);
await require('./loadGenerators')();
require('./sockets.js')(server);
startServer();
})();

Expand Down
25 changes: 16 additions & 9 deletions models/db.js
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Original file line number Diff line number Diff line change
@@ -1,17 +1,24 @@
const mongoose = require('mongoose');
const settings = require('../settings');

module.exports = testEnv => {
module.exports = async testEnv => {
const dbName = settings.db + (testEnv ? '-test' : '');

mongoose.connect('mongodb://localhost/' + dbName, {
useNewUrlParser: true,
useUnifiedTopology: true,
useFindAndModify: false,
});
mongoose.set('useCreateIndex', true);

const db = mongoose.connection;
db.on('connecting', console.log.bind(console, '[database] Connecting to MongoDB...'));
db.on('connected', console.log.bind(console, '[database] Connected to MongoDB.'));
db.on('error', console.error.bind(console, '[database] Error occured while connecting to MongoDB.'));
db.on('error', console.error.bind(console, '[database] Error occured in MongoDB connection.'));

try {
await mongoose.connect('mongodb://localhost/' + dbName, {
useNewUrlParser: true,
useUnifiedTopology: true,
useFindAndModify: false,
});
} catch (err) {
console.error('[database] Error occured while connecting to MongoDB. Is it running?');
process.exit(1);
}

mongoose.set('useCreateIndex', true);
};