51 lines
1.7 KiB
TypeScript
51 lines
1.7 KiB
TypeScript
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/**
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* Mock stand-in for the real atlas `POST /api/chat`. Streams the same SSE event shape
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* (`queue` → `reasoning` → `content` → `done`) as the real endpoint would, but replays a
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* canned reply instead of calling vLLM — no rate limiting, no budget, no real model.
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*/
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const REPLY_REASONING =
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'The user is asking about a gap in the wave column display. Argo CD sync waves are integers used purely for ordering; there is no requirement that they be contiguous. The cluster uses 0,1,2,3,5,6,7,8. This is normal and usually happens when a wave is retired or intentionally reserved.'
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const REPLY =
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'Wave 4 is empty. Waves are sort keys, not a sequence — Argo orders by value and skips gaps, so 3 is followed directly by 5. Nothing is missing.'
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const wait = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms))
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export async function POST() {
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const encoder = new TextEncoder()
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const stream = new ReadableStream({
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async start(controller) {
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const send = (type: string, payload: Record<string, unknown> = {}) => {
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controller.enqueue(encoder.encode(`data: ${JSON.stringify({ type, ...payload })}\n\n`))
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}
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for (let position = 3; position > 0; position--) {
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send('queue', { position })
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await wait(500)
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}
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send('reasoning', { text: REPLY_REASONING })
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await wait(200)
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let i = 0
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while (i < REPLY.length) {
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i += 3
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send('content', { text: REPLY.slice(0, i) })
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await wait(40)
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}
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send('done')
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controller.close()
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},
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})
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return new Response(stream, {
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headers: {
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'Content-Type': 'text/event-stream',
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'Cache-Control': 'no-cache',
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Connection: 'keep-alive',
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},
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})
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}
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