42 lines
1.9 KiB
TypeScript
42 lines
1.9 KiB
TypeScript
import { observationReader } from '$lib/server/fleet/status.js';
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import { listServers } from '$lib/server/fleet/servers.js';
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import { statusEntry } from '$lib/server/pipeline/worker.js';
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import { subscribe } from '$lib/server/pipeline/bus.js';
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import { listTelemetry } from '$lib/server/fleet/telemetry.js';
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const encoder = new TextEncoder();
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const HEARTBEAT_MS = 20_000;
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export async function GET() {
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let heartbeat: NodeJS.Timeout | null = null;
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let unsubscribe: (() => void) | null = null;
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const stream = new ReadableStream<Uint8Array>({
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start(controller) {
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unsubscribe = subscribe((event) => {
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if (event.type === 'server-status' || event.type === 'server-telemetry') {
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controller.enqueue(encoder.encode(`event: ${event.type}\ndata: ${JSON.stringify({ ...event, serverNow: Date.now() })}\n\n`));
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}
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});
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const observation = observationReader();
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const observe = (server: ReturnType<typeof listServers>[number]) => statusEntry(server, observation);
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controller.enqueue(encoder.encode(': hello\n\n'));
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controller.enqueue(encoder.encode(`event: server-status\ndata: ${JSON.stringify({ entries: listServers().map(server => observe(server)), snapshot: true, serverNow: Date.now() })}\n\n`));
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controller.enqueue(encoder.encode(`event: server-telemetry\ndata: ${JSON.stringify({ entries: listTelemetry(), snapshot: true, serverNow: Date.now() })}\n\n`));
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heartbeat = setInterval(() => controller.enqueue(encoder.encode(': ping\n\n')), HEARTBEAT_MS);
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},
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cancel() {
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if (heartbeat) clearInterval(heartbeat);
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if (unsubscribe) unsubscribe();
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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, no-transform',
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Connection: 'keep-alive'
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}
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});
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}
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