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meta: use load balancer for companion in e2e tests (#4228)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| #!/usr/bin/env node | ||
|
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| import { execa } from 'execa' | ||
| import http from 'node:http' | ||
| import httpProxy from 'http-proxy' | ||
|
|
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| const numInstances = 3 | ||
| const lbPort = 3020 | ||
| const companionStartPort = 3021 | ||
|
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| // simple load balancer that will direct requests round robin between companion instances | ||
| function createLoadBalancer (baseUrls) { | ||
| const proxy = httpProxy.createProxyServer({ ws: true }) | ||
|
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| let i = 0 | ||
|
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| function getTarget () { | ||
| return baseUrls[i % baseUrls.length] | ||
| } | ||
|
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| const server = http.createServer((req, res) => { | ||
| const target = getTarget() | ||
| // console.log('req', req.method, target, req.url) | ||
| proxy.web(req, res, { target }, (err) => { | ||
| console.error('Load balancer failed to proxy request', err.message) | ||
| res.statusCode = 500 | ||
| res.end() | ||
| }) | ||
| i++ | ||
| }) | ||
|
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| server.on('upgrade', (req, socket, head) => { | ||
| const target = getTarget() | ||
| // console.log('upgrade', target, req.url) | ||
| proxy.ws(req, socket, head, { target }, (err) => { | ||
| console.error('Load balancer failed to proxy websocket', err.message) | ||
| console.error(err) | ||
| socket.destroy() | ||
| }) | ||
| i++ | ||
| }) | ||
|
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| server.listen(lbPort) | ||
| console.log('Load balancer listening', lbPort) | ||
| return server | ||
| } | ||
|
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| const startCompanion = ({ name, port }) => execa('nodemon', [ | ||
| '--watch', 'packages/@uppy/companion/src', '--exec', 'node', '-r', 'dotenv/config', './packages/@uppy/companion/src/standalone/start-server.js', | ||
| ], { | ||
| cwd: new URL('../', import.meta.url), | ||
| stdio: 'inherit', | ||
| env: { | ||
| // Note: these env variables will override anything set in .env | ||
| COMPANION_PORT: port, | ||
| COMPANION_SECRET: 'development', // multi instance will not work without secret set | ||
| COMPANION_PREAUTH_SECRET: 'development', // multi instance will not work without secret set | ||
| COMPANION_ALLOW_LOCAL_URLS: 'true', | ||
| COMPANION_LOGGER_PROCESS_NAME: name, | ||
| }, | ||
| }) | ||
|
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| const hosts = Array.from({ length: numInstances }, (_, index) => { | ||
| const port = companionStartPort + index | ||
| return { index, port } | ||
| }) | ||
|
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| console.log('Starting companion instances on ports', hosts.map(({ port }) => port)) | ||
|
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| const companions = hosts.map(({ index, port }) => startCompanion({ name: `companion${index}`, port })) | ||
|
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| let loadBalancer | ||
| try { | ||
| loadBalancer = createLoadBalancer(hosts.map(({ port }) => `http://localhost:${port}`)) | ||
| await Promise.all(companions) | ||
| } finally { | ||
| loadBalancer?.close() | ||
| companions.forEach((companion) => companion.kill()) | ||
| } |
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