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database.js
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database.js
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const mongoose = require('mongoose');
const logger = require('./logger');
mongoose.connection.on('open', () => logger.info('Connected to DB'));
mongoose.connection.on('close', () => logger.info('Disconnected from DB'));
mongoose.connection.on('error', (err) => logger.error(`DB error: ${err}`));
process.on('SIGINT', () => {
mongoose.connection.close(() => {
logger.info('Disconnected from DB (on process SIGINT)');
process.exit(0);
});
});
exports.connect = ({
protocol = '',
url = '',
username = '',
password = '',
}) => {
const connectionString = (() => {
if (!username || !password) return `${protocol}://${url}`;
return `${protocol}://${username}:${password}@${url}`;
})();
mongoose.connect(connectionString);
};
exports.disconnect = () => {
mongoose.connection.close(() => {
logger.info('Disconnected from DB (on demand)');
});
};