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// @flow
/**
* Database setup is done here
*/
import fs from 'fs';
import path from 'path';
import inspect from 'rethinkdb-inspector';
import { statsd } from '../statsd';
const IS_PROD = !process.env.FORCE_DEV && process.env.NODE_ENV === 'production';
const CONNECTIONS = 20;
const DEFAULT_CONFIG = {
// Connect to the test database when, well, testing
db: !process.env.TEST_DB ? 'spectrum' : 'testing',
max: CONNECTIONS, // Maximum number of connections, default is 1000
buffer: CONNECTIONS, // Minimum number of connections open at any given moment, default is 50
timeoutGb: 60 * 60 * 1000, // How long should an unused connection stick around, default is an hour, this is a minute
timeout: 30, // The number of seconds for a connection to be opened, default 20
};
let ca;
try {
ca = fs.readFileSync(path.join(process.cwd(), 'cacert'));
} catch (err) {}
if (!ca && IS_PROD)
throw new Error(
'Please provide the SSL certificate to connect to the production database in a file called `cacert` in the root directory.'
);
const PRODUCTION_CONFIG = {
servers: [
{
password: process.env.COMPOSE_RETHINKDB_PASSWORD,
host: process.env.COMPOSE_RETHINKDB_URL,
port: process.env.COMPOSE_RETHINKDB_PORT,
...(ca
? {
ssl: {
ca,
},
}
: {}),
},
{
password: process.env.COMPOSE_RETHINKDB_PASSWORD,
host: process.env.BACKUP_RETHINKDB_URL,
port: process.env.BACKUP_RETHINKDB_PORT,
...(ca
? {
ssl: {
ca,
},
}
: {}),
},
],
};
const config = IS_PROD
? {
...DEFAULT_CONFIG,
...PRODUCTION_CONFIG,
}
: {
...DEFAULT_CONFIG,
};
let r = require('rethinkhaberdashery')(config);
const poolMaster = r.getPoolMaster();
poolMaster.on('queueing', size => {
statsd.gauge('db.query_queue.size', size);
});
setInterval(() => {
statsd.gauge('db.connections.count', poolMaster.getLength());
}, 5000);
// Exit the process on unhealthy db in test env
if (process.env.TEST_DB) {
poolMaster.on('healthy', healthy => {
if (!healthy) {
process.exit(1);
}
});
}
const queries = [];
inspect(r, {
onQueryComplete: (query, { size, time }) => {
if (query.indexOf('.changes') > -1) return;
statsd.increment('db.queries.count');
statsd.histogram('db.queries.response_time', time);
statsd.histogram('db.queries.response_size', size);
// In development write out a file of the most expensive queries
if (process.env.NODE_ENV === 'development' && process.env.TRACK_DB_PERF) {
queries.push({ query, time, size });
fs.writeFileSync(
'queries-by-time.js',
JSON.stringify(queries.sort((a, b) => b.time - a.time), null, 2)
);
fs.writeFileSync(
'queries-by-response-size.js',
JSON.stringify(queries.sort((a, b) => b.size - a.size), null, 2)
);
}
},
});
module.exports = { db: r };
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