mastodon-glitch/streaming/database.js

129 lines
4.2 KiB
JavaScript

import pg from 'pg';
import pgConnectionString from 'pg-connection-string';
import { parseIntFromEnvValue } from './utils.js';
/**
* @param {NodeJS.ProcessEnv} env the `process.env` value to read configuration from
* @param {string} environment
* @returns {pg.PoolConfig} the configuration for the PostgreSQL connection
*/
export function configFromEnv(env, environment) {
/** @type {Record<string, pg.PoolConfig>} */
const pgConfigs = {
development: {
user: env.DB_USER || pg.defaults.user,
password: env.DB_PASS || pg.defaults.password,
database: env.DB_NAME || 'mastodon_development',
host: env.DB_HOST || pg.defaults.host,
port: parseIntFromEnvValue(env.DB_PORT, pg.defaults.port ?? 5432, 'DB_PORT')
},
production: {
user: env.DB_USER || 'mastodon',
password: env.DB_PASS || '',
database: env.DB_NAME || 'mastodon_production',
host: env.DB_HOST || 'localhost',
port: parseIntFromEnvValue(env.DB_PORT, 5432, 'DB_PORT')
},
};
/**
* @type {pg.PoolConfig}
*/
let baseConfig = {};
if (env.DATABASE_URL) {
const parsedUrl = pgConnectionString.parse(env.DATABASE_URL);
// The result of dbUrlToConfig from pg-connection-string is not type
// compatible with pg.PoolConfig, since parts of the connection URL may be
// `null` when pg.PoolConfig expects `undefined`, as such we have to
// manually create the baseConfig object from the properties of the
// parsedUrl.
//
// For more information see:
// https://github.com/brianc/node-postgres/issues/2280
//
// FIXME: clean up once brianc/node-postgres#3128 lands
if (typeof parsedUrl.password === 'string') baseConfig.password = parsedUrl.password;
if (typeof parsedUrl.host === 'string') baseConfig.host = parsedUrl.host;
if (typeof parsedUrl.user === 'string') baseConfig.user = parsedUrl.user;
if (typeof parsedUrl.port === 'string') {
const parsedPort = parseInt(parsedUrl.port, 10);
if (isNaN(parsedPort)) {
throw new Error('Invalid port specified in DATABASE_URL environment variable');
}
baseConfig.port = parsedPort;
}
if (typeof parsedUrl.database === 'string') baseConfig.database = parsedUrl.database;
if (typeof parsedUrl.options === 'string') baseConfig.options = parsedUrl.options;
// The pg-connection-string type definition isn't correct, as parsedUrl.ssl
// can absolutely be an Object, this is to work around these incorrect
// types, including the casting of parsedUrl.ssl to Record<string, any>
if (typeof parsedUrl.ssl === 'boolean') {
baseConfig.ssl = parsedUrl.ssl;
} else if (typeof parsedUrl.ssl === 'object' && !Array.isArray(parsedUrl.ssl) && parsedUrl.ssl !== null) {
/** @type {Record<string, any>} */
const sslOptions = parsedUrl.ssl;
baseConfig.ssl = {};
baseConfig.ssl.cert = sslOptions.cert;
baseConfig.ssl.key = sslOptions.key;
baseConfig.ssl.ca = sslOptions.ca;
baseConfig.ssl.rejectUnauthorized = sslOptions.rejectUnauthorized;
}
// Support overriding the database password in the connection URL
if (!baseConfig.password && env.DB_PASS) {
baseConfig.password = env.DB_PASS;
}
} else if (Object.hasOwn(pgConfigs, environment)) {
baseConfig = pgConfigs[environment];
if (env.DB_SSLMODE) {
switch(env.DB_SSLMODE) {
case 'disable':
case '':
baseConfig.ssl = false;
break;
case 'no-verify':
baseConfig.ssl = { rejectUnauthorized: false };
break;
default:
baseConfig.ssl = {};
break;
}
}
} else {
throw new Error('Unable to resolve postgresql database configuration.');
}
return {
...baseConfig,
max: parseIntFromEnvValue(env.DB_POOL, 10, 'DB_POOL'),
connectionTimeoutMillis: 15000,
// Deliberately set application_name to an empty string to prevent excessive
// CPU usage with PG Bouncer. See:
// - https://github.com/mastodon/mastodon/pull/23958
// - https://github.com/pgbouncer/pgbouncer/issues/349
application_name: '',
};
}
let pool;
/**
*
* @param {pg.PoolConfig} config
* @returns {pg.Pool}
*/
export function getPool(config) {
if (pool) {
return pool;
}
pool = new pg.Pool(config);
return pool;
}