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Refactor: fix streaming postgresql and redis typing issues (#28747)

shrike
Emelia Smith 2024-01-25 17:46:02 +01:00 committed by GitHub
parent 6936e5aa69
commit 881e8c113c
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1 changed files with 109 additions and 26 deletions
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135
streaming/index.js
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@ -8,7 +8,7 @@ const url = require('url');
const cors = require('cors');
const dotenv = require('dotenv');
const express = require('express');
const Redis = require('ioredis');
const { Redis } = require('ioredis');
const { JSDOM } = require('jsdom');
const pg = require('pg');
const dbUrlToConfig = require('pg-connection-string').parse;
@ -43,13 +43,18 @@ initializeLogLevel(process.env, environment);
*/
/**
* @param {Object.<string, any>} config
* @param {RedisConfiguration} config
* @returns {Promise<Redis>}
*/
const createRedisClient = async (config) => {
const { redisParams, redisUrl } = config;
// @ts-ignore
const client = new Redis(redisUrl, redisParams);
// @ts-ignore
const createRedisClient = async ({ redisParams, redisUrl }) => {
let client;
if (typeof redisUrl === 'string') {
client = new Redis(redisUrl, redisParams);
} else {
client = new Redis(redisParams);
}
client.on('error', (err) => logger.error({ err }, 'Redis Client Error!'));
return client;
@ -87,39 +92,101 @@ const parseJSON = (json, req) => {
};
/**
* @param {Object.<string, any>} env the `process.env` value to read configuration from
* @returns {Object.<string, any>} the configuration for the PostgreSQL connection
* Takes an environment variable that should be an integer, attempts to parse
* it falling back to a default if not set, and handles errors parsing.
* @param {string|undefined} value
* @param {number} defaultValue
* @param {string} variableName
* @returns {number}
*/
const parseIntFromEnv = (value, defaultValue, variableName) => {
if (typeof value === 'string' && value.length > 0) {
const parsedValue = parseInt(value, 10);
if (isNaN(parsedValue)) {
throw new Error(`Invalid ${variableName} environment variable: ${value}`);
}
return parsedValue;
} else {
return defaultValue;
}
};
/**
* @param {NodeJS.ProcessEnv} env the `process.env` value to read configuration from
* @returns {pg.PoolConfig} the configuration for the PostgreSQL connection
*/
const pgConfigFromEnv = (env) => {
/** @type {Record<string, pg.PoolConfig>} */
const pgConfigs = {
development: {
user: env.DB_USER || pg.defaults.user,
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: env.DB_PORT || pg.defaults.port,
host: env.DB_HOST || pg.defaults.host,
port: parseIntFromEnv(env.DB_PORT, pg.defaults.port ?? 5432, 'DB_PORT')
},
production: {
user: env.DB_USER || 'mastodon',
user: env.DB_USER || 'mastodon',
password: env.DB_PASS || '',
database: env.DB_NAME || 'mastodon_production',
host: env.DB_HOST || 'localhost',
port: env.DB_PORT || 5432,
host: env.DB_HOST || 'localhost',
port: parseIntFromEnv(env.DB_PORT, 5432, 'DB_PORT')
},
};
let baseConfig;
/**
* @type {pg.PoolConfig}
*/
let baseConfig = {};
if (env.DATABASE_URL) {
baseConfig = dbUrlToConfig(env.DATABASE_URL);
const parsedUrl = dbUrlToConfig(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 {
// @ts-ignore
} else if (Object.hasOwnProperty.call(pgConfigs, environment)) {
baseConfig = pgConfigs[environment];
if (env.DB_SSLMODE) {
@ -136,42 +203,58 @@ const pgConfigFromEnv = (env) => {
break;
}
}
} else {
throw new Error('Unable to resolve postgresql database configuration.');
}
return {
...baseConfig,
max: env.DB_POOL || 10,
max: parseIntFromEnv(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: '',
};
};
/**
* @param {Object.<string, any>} env the `process.env` value to read configuration from
* @returns {Object.<string, any>} configuration for the Redis connection
* @typedef RedisConfiguration
* @property {import('ioredis').RedisOptions} redisParams
* @property {string} redisPrefix
* @property {string|undefined} redisUrl
*/
/**
* @param {NodeJS.ProcessEnv} env the `process.env` value to read configuration from
* @returns {RedisConfiguration} configuration for the Redis connection
*/
const redisConfigFromEnv = (env) => {
// ioredis *can* transparently add prefixes for us, but it doesn't *in some cases*,
// which means we can't use it. But this is something that should be looked into.
const redisPrefix = env.REDIS_NAMESPACE ? `${env.REDIS_NAMESPACE}:` : '';
let redisPort = parseIntFromEnv(env.REDIS_PORT, 6379, 'REDIS_PORT');
let redisDatabase = parseIntFromEnv(env.REDIS_DB, 0, 'REDIS_DB');
/** @type {import('ioredis').RedisOptions} */
const redisParams = {
host: env.REDIS_HOST || '127.0.0.1',
port: env.REDIS_PORT || 6379,
db: env.REDIS_DB || 0,
port: redisPort,
db: redisDatabase,
password: env.REDIS_PASSWORD || undefined,
};
// redisParams.path takes precedence over host and port.
if (env.REDIS_URL && env.REDIS_URL.startsWith('unix://')) {
// @ts-ignore
redisParams.path = env.REDIS_URL.slice(7);
}
return {
redisParams,
redisPrefix,
redisUrl: env.REDIS_URL,
redisUrl: typeof env.REDIS_URL === 'string' ? env.REDIS_URL : undefined,
};
};