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migrate(W-14179971): pg-v5: Upgrade pg:bloat
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,132 @@ | ||
| const debug = require('debug')('pg') | ||
| import {APIClient} from '@heroku-cli/command' | ||
| import * as EventEmitter from 'node:events' | ||
| import * as createTunnel from 'tunnel-ssh' | ||
| import {promisify} from 'util' | ||
| import host from './host' | ||
| import {getConnectionDetails} from './util' | ||
|
|
||
| export const getBastion = function (config:Record<string, string>, baseName: string) { | ||
| // If there are bastions, extract a host and a key | ||
| // otherwise, return an empty Object | ||
|
|
||
| // If there are bastions: | ||
| // * there should be one *_BASTION_KEY | ||
| // * pick one host from the comma-separated list in *_BASTIONS | ||
| // We assert that _BASTIONS and _BASTION_KEY always exist together | ||
| // If either is falsy, pretend neither exist | ||
|
|
||
| const bastionKey = config[`${baseName}_BASTION_KEY`] | ||
| const bastions = (config[`${baseName}_BASTIONS`] || '').split(',') | ||
| const bastionHost = bastions[Math.floor(Math.random() * bastions.length)] | ||
| return (bastionKey && bastionHost) ? {bastionHost, bastionKey} : {} | ||
| } | ||
|
|
||
| export const env = (db: ReturnType<typeof getConnectionDetails>) => { | ||
| const baseEnv = Object.assign({ | ||
| PGAPPNAME: 'psql non-interactive', | ||
| PGSSLMODE: (!db.host || db.host === 'localhost') ? 'prefer' : 'require', | ||
| }, process.env) | ||
| const mapping:Record<string, keyof Omit<typeof db, 'attachment'>> = { | ||
| PGUSER: 'user', | ||
| PGPASSWORD: 'password', | ||
| PGDATABASE: 'database', | ||
| PGPORT: 'port', | ||
| PGHOST: 'host', | ||
| } | ||
| Object.keys(mapping).forEach(envVar => { | ||
| const val = db[mapping[envVar]] | ||
| if (val) { | ||
| baseEnv[envVar] = val as string | ||
| } | ||
| }) | ||
| return baseEnv | ||
| } | ||
|
|
||
| export function tunnelConfig(db: ReturnType<typeof getConnectionDetails>) { | ||
| const localHost = '127.0.0.1' | ||
| // eslint-disable-next-line no-mixed-operators | ||
| const localPort = Math.floor(Math.random() * (65535 - 49152) + 49152) | ||
| return { | ||
| username: 'bastion', | ||
| host: db.bastionHost, | ||
| privateKey: db.bastionKey, | ||
| dstHost: db.host, | ||
| dstPort: Number.parseInt(db.port, 10), | ||
| localHost: localHost, | ||
| localPort: localPort, | ||
| } | ||
| } | ||
|
|
||
| export function getConfigs(db: ReturnType<typeof getConnectionDetails>) { | ||
| const dbEnv: NodeJS.ProcessEnv = env(db) | ||
| const dbTunnelConfig = tunnelConfig(db) | ||
| if (db.bastionKey) { | ||
| Object.assign(dbEnv, { | ||
| PGPORT: dbTunnelConfig.localPort, | ||
| PGHOST: dbTunnelConfig.localHost, | ||
| }) | ||
| } | ||
|
|
||
| return { | ||
| dbEnv, | ||
| dbTunnelConfig, | ||
| } | ||
| } | ||
|
|
||
| class Timeout { | ||
| private readonly timeout: number | ||
| private readonly message: string | ||
| private readonly events = new EventEmitter() | ||
| private timer: NodeJS.Timeout | undefined | ||
|
|
||
| constructor(timeout: number, message: string) { | ||
| this.timeout = timeout | ||
| this.message = message | ||
| } | ||
|
|
||
| async promise() { | ||
| this.timer = setTimeout(() => { | ||
| this.events.emit('error', new Error(this.message)) | ||
| }, this.timeout) | ||
|
|
||
| try { | ||
| await EventEmitter.once(this.events, 'cancelled') | ||
| } finally { | ||
| clearTimeout(this.timer) | ||
| } | ||
| } | ||
|
|
||
| cancel() { | ||
| this.events.emit('cancelled') | ||
| } | ||
| } | ||
|
|
||
| export async function sshTunnel(db: ReturnType<typeof getConnectionDetails>, dbTunnelConfig: ReturnType<typeof tunnelConfig>, timeout = 10000) { | ||
| if (!db.bastionKey) { | ||
| return null | ||
| } | ||
|
|
||
| const timeoutInstance = new Timeout(timeout, 'Establishing a secure tunnel timed out') | ||
| const createSSHTunnel = promisify(createTunnel) | ||
| try { | ||
| return await Promise.race([ | ||
| timeoutInstance.promise(), | ||
| createSSHTunnel(dbTunnelConfig), | ||
| ]) | ||
| } catch (error) { | ||
| debug(error) | ||
| throw new Error('Unable to establish a secure tunnel to your database.') | ||
| } finally { | ||
| timeoutInstance.cancel() | ||
| } | ||
| } | ||
|
|
||
| export async function fetchConfig(heroku:APIClient, db: {id: string}) { | ||
| return heroku.get<{host: string, private_key:string}>( | ||
| `/client/v11/databases/${encodeURIComponent(db.id)}/bastion`, | ||
| { | ||
| hostname: host(), | ||
| }, | ||
| ) | ||
| } |
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