71 lines
No EOL
3.2 KiB
JavaScript
Executable file
71 lines
No EOL
3.2 KiB
JavaScript
Executable file
import * as Log from '../../../build/output/log';
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import { flushAllTraces } from '../../../trace';
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import { traceMemoryUsage } from '../../../lib/memory/trace';
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const MILLISECONDS_IN_NANOSECOND = BigInt(1000000);
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export function msToNs(ms) {
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return BigInt(Math.floor(ms)) * MILLISECONDS_IN_NANOSECOND;
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}
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/**
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* Subscribes to compilation events for `project` and prints them using the
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* `Log` library.
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*
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* When `parentSpan` is provided, `TraceEvent` compilation events are recorded
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* as trace spans in the `.next/trace` file.
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*
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* Returns a promise that resolves when the subscription ends. Abort the
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* `signal` to close the underlying async iterator and settle the promise
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* promptly. The iterator also closes automatically when the Rust side
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* drops the subscription (e.g. after project shutdown).
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*/ export function backgroundLogCompilationEvents(project, { eventTypes, signal, parentSpan } = {}) {
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const iterator = project.compilationEventsSubscribe(eventTypes);
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// Close the iterator as soon as the signal fires so the for-await loop
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// exits without waiting for the next compilation event.
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signal?.addEventListener('abort', ()=>iterator.return?.(undefined), {
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once: true
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});
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const promise = async function() {
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for await (const event of iterator){
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// Record TraceEvent compilation events as trace spans in .next/trace.
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if (parentSpan && event.typeName === 'TraceEvent' && event.eventJson) {
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try {
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const data = JSON.parse(event.eventJson);
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parentSpan.manualTraceChild(data.name, msToNs(data.startTimeMs), msToNs(data.endTimeMs), Object.fromEntries(data.attributes ?? []));
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traceMemoryUsage(data.name, parentSpan);
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// We flush after each event to make sure it makes it to disk. These events are rare and
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// tend to happen at the very end of a build so to make sure they are logged we need to
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// flush.
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// NOTE: in a `next build` environment where we are reporting events to the parent thread, this is a no-op.
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await flushAllTraces();
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} catch {}
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continue; // don't log these events, they just go to the trace file
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}
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switch(event.severity){
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case 'EVENT':
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Log.event(event.message);
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break;
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case 'TRACE':
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Log.trace(event.message);
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break;
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case 'INFO':
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Log.info(event.message);
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break;
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case 'WARNING':
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Log.warn(event.message);
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break;
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case 'ERROR':
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Log.error(event.message);
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break;
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case 'FATAL':
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Log.error(event.message);
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break;
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default:
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break;
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}
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}
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}();
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// Prevent unhandled rejection if the subscription errors after the project shuts down.
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promise.catch(()=>{});
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return promise;
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}
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//# sourceMappingURL=compilation-events.js.map
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