kopia lustrzana https://github.com/Tldraw/Tldraw
74 wiersze
1.8 KiB
TypeScript
74 wiersze
1.8 KiB
TypeScript
// at the time of writing, workerd will regularly crash with a segfault
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// but the error is not caught by the process, so it will just hang
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// this script wraps the process, tailing the logs and restarting the process
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// if we encounter the string 'Segmentation fault'
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import { ChildProcessWithoutNullStreams, spawn } from 'child_process'
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import stripAnsi from 'strip-ansi'
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// eslint-disable-next-line no-console
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const log = console.log
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class MiniflareMonitor {
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private process: ChildProcessWithoutNullStreams | null = null
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constructor(
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private command: string,
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private args: string[] = []
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) {}
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public start(): void {
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this.stop() // Ensure any existing process is stopped
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log(`Starting wrangler...`)
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this.process = spawn(this.command, this.args, {
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env: {
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NODE_ENV: 'development',
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...process.env,
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},
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})
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this.process.stdout.on('data', (data: Buffer) => {
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this.handleOutput(stripAnsi(data.toString().replace('\r', '').trim()))
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})
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this.process.stderr.on('data', (data: Buffer) => {
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this.handleOutput(stripAnsi(data.toString().replace('\r', '').trim()), true)
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})
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}
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private handleOutput(output: string, err = false): void {
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if (!output) return
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if (output.includes('Segmentation fault')) {
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console.error('Segmentation fault detected. Restarting Miniflare...')
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this.restart()
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} else if (!err) {
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log(output.replace('[mf:inf]', '')) // or handle the output differently
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}
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}
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private restart(): void {
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log('Restarting wrangler...')
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this.stop()
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setTimeout(() => this.start(), 3000) // Restart after a short delay
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}
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private stop(): void {
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if (this.process) {
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this.process.kill()
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this.process = null
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}
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}
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}
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const monitor = new MiniflareMonitor('wrangler', [
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'dev',
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'--env',
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'dev',
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'--test-scheduled',
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'--log-level',
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'info',
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'--var',
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'IS_LOCAL:true',
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])
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monitor.start()
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