Refactor: fix streaming postgresql and redis typing issues (#28747)
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Emelia Smith
GitHub
parent
6936e5aa69
commit
881e8c113c
1 changed files with 109 additions and 26 deletions
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@ -8,7 +8,7 @@ const url = require('url');
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const cors = require('cors');
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const dotenv = require('dotenv');
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const express = require('express');
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const Redis = require('ioredis');
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const { Redis } = require('ioredis');
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const { JSDOM } = require('jsdom');
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const pg = require('pg');
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const dbUrlToConfig = require('pg-connection-string').parse;
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@ -43,13 +43,18 @@ initializeLogLevel(process.env, environment);
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*/
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/**
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* @param {Object.<string, any>} config
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* @param {RedisConfiguration} config
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* @returns {Promise<Redis>}
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*/
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const createRedisClient = async (config) => {
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const { redisParams, redisUrl } = config;
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// @ts-ignore
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const client = new Redis(redisUrl, redisParams);
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// @ts-ignore
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const createRedisClient = async ({ redisParams, redisUrl }) => {
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let client;
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if (typeof redisUrl === 'string') {
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client = new Redis(redisUrl, redisParams);
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} else {
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client = new Redis(redisParams);
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}
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client.on('error', (err) => logger.error({ err }, 'Redis Client Error!'));
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return client;
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@ -87,39 +92,101 @@ const parseJSON = (json, req) => {
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};
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/**
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* @param {Object.<string, any>} env the `process.env` value to read configuration from
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* @returns {Object.<string, any>} the configuration for the PostgreSQL connection
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* Takes an environment variable that should be an integer, attempts to parse
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* it falling back to a default if not set, and handles errors parsing.
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* @param {string|undefined} value
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* @param {number} defaultValue
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* @param {string} variableName
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* @returns {number}
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*/
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const parseIntFromEnv = (value, defaultValue, variableName) => {
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if (typeof value === 'string' && value.length > 0) {
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const parsedValue = parseInt(value, 10);
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if (isNaN(parsedValue)) {
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throw new Error(`Invalid ${variableName} environment variable: ${value}`);
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}
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return parsedValue;
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} else {
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return defaultValue;
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}
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};
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/**
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* @param {NodeJS.ProcessEnv} env the `process.env` value to read configuration from
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* @returns {pg.PoolConfig} the configuration for the PostgreSQL connection
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*/
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const pgConfigFromEnv = (env) => {
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/** @type {Record<string, pg.PoolConfig>} */
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const pgConfigs = {
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development: {
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user: env.DB_USER || pg.defaults.user,
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user: env.DB_USER || pg.defaults.user,
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password: env.DB_PASS || pg.defaults.password,
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database: env.DB_NAME || 'mastodon_development',
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host: env.DB_HOST || pg.defaults.host,
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port: env.DB_PORT || pg.defaults.port,
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host: env.DB_HOST || pg.defaults.host,
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port: parseIntFromEnv(env.DB_PORT, pg.defaults.port ?? 5432, 'DB_PORT')
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},
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production: {
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user: env.DB_USER || 'mastodon',
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user: env.DB_USER || 'mastodon',
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password: env.DB_PASS || '',
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database: env.DB_NAME || 'mastodon_production',
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host: env.DB_HOST || 'localhost',
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port: env.DB_PORT || 5432,
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host: env.DB_HOST || 'localhost',
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port: parseIntFromEnv(env.DB_PORT, 5432, 'DB_PORT')
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},
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};
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let baseConfig;
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/**
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* @type {pg.PoolConfig}
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*/
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let baseConfig = {};
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if (env.DATABASE_URL) {
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baseConfig = dbUrlToConfig(env.DATABASE_URL);
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const parsedUrl = dbUrlToConfig(env.DATABASE_URL);
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// The result of dbUrlToConfig from pg-connection-string is not type
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// compatible with pg.PoolConfig, since parts of the connection URL may be
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// `null` when pg.PoolConfig expects `undefined`, as such we have to
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// manually create the baseConfig object from the properties of the
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// parsedUrl.
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//
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// For more information see:
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// https://github.com/brianc/node-postgres/issues/2280
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//
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// FIXME: clean up once brianc/node-postgres#3128 lands
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if (typeof parsedUrl.password === 'string') baseConfig.password = parsedUrl.password;
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if (typeof parsedUrl.host === 'string') baseConfig.host = parsedUrl.host;
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if (typeof parsedUrl.user === 'string') baseConfig.user = parsedUrl.user;
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if (typeof parsedUrl.port === 'string') {
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const parsedPort = parseInt(parsedUrl.port, 10);
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if (isNaN(parsedPort)) {
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throw new Error('Invalid port specified in DATABASE_URL environment variable');
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}
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baseConfig.port = parsedPort;
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}
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if (typeof parsedUrl.database === 'string') baseConfig.database = parsedUrl.database;
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if (typeof parsedUrl.options === 'string') baseConfig.options = parsedUrl.options;
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// The pg-connection-string type definition isn't correct, as parsedUrl.ssl
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// can absolutely be an Object, this is to work around these incorrect
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// types, including the casting of parsedUrl.ssl to Record<string, any>
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if (typeof parsedUrl.ssl === 'boolean') {
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baseConfig.ssl = parsedUrl.ssl;
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} else if (typeof parsedUrl.ssl === 'object' && !Array.isArray(parsedUrl.ssl) && parsedUrl.ssl !== null) {
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/** @type {Record<string, any>} */
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const sslOptions = parsedUrl.ssl;
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baseConfig.ssl = {};
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baseConfig.ssl.cert = sslOptions.cert;
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baseConfig.ssl.key = sslOptions.key;
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baseConfig.ssl.ca = sslOptions.ca;
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baseConfig.ssl.rejectUnauthorized = sslOptions.rejectUnauthorized;
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}
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// Support overriding the database password in the connection URL
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if (!baseConfig.password && env.DB_PASS) {
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baseConfig.password = env.DB_PASS;
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}
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} else {
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// @ts-ignore
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} else if (Object.hasOwnProperty.call(pgConfigs, environment)) {
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baseConfig = pgConfigs[environment];
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if (env.DB_SSLMODE) {
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@ -136,42 +203,58 @@ const pgConfigFromEnv = (env) => {
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break;
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}
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}
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} else {
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throw new Error('Unable to resolve postgresql database configuration.');
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}
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return {
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...baseConfig,
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max: env.DB_POOL || 10,
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max: parseIntFromEnv(env.DB_POOL, 10, 'DB_POOL'),
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connectionTimeoutMillis: 15000,
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// Deliberately set application_name to an empty string to prevent excessive
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// CPU usage with PG Bouncer. See:
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// - https://github.com/mastodon/mastodon/pull/23958
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// - https://github.com/pgbouncer/pgbouncer/issues/349
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application_name: '',
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};
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};
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/**
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* @param {Object.<string, any>} env the `process.env` value to read configuration from
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* @returns {Object.<string, any>} configuration for the Redis connection
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* @typedef RedisConfiguration
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* @property {import('ioredis').RedisOptions} redisParams
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* @property {string} redisPrefix
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* @property {string|undefined} redisUrl
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*/
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/**
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* @param {NodeJS.ProcessEnv} env the `process.env` value to read configuration from
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* @returns {RedisConfiguration} configuration for the Redis connection
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*/
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const redisConfigFromEnv = (env) => {
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// ioredis *can* transparently add prefixes for us, but it doesn't *in some cases*,
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// which means we can't use it. But this is something that should be looked into.
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const redisPrefix = env.REDIS_NAMESPACE ? `${env.REDIS_NAMESPACE}:` : '';
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let redisPort = parseIntFromEnv(env.REDIS_PORT, 6379, 'REDIS_PORT');
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let redisDatabase = parseIntFromEnv(env.REDIS_DB, 0, 'REDIS_DB');
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/** @type {import('ioredis').RedisOptions} */
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const redisParams = {
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host: env.REDIS_HOST || '127.0.0.1',
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port: env.REDIS_PORT || 6379,
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db: env.REDIS_DB || 0,
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port: redisPort,
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db: redisDatabase,
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password: env.REDIS_PASSWORD || undefined,
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};
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// redisParams.path takes precedence over host and port.
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if (env.REDIS_URL && env.REDIS_URL.startsWith('unix://')) {
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// @ts-ignore
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redisParams.path = env.REDIS_URL.slice(7);
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}
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return {
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redisParams,
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redisPrefix,
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redisUrl: env.REDIS_URL,
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redisUrl: typeof env.REDIS_URL === 'string' ? env.REDIS_URL : undefined,
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};
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};
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