import diagnostics from "node:diagnostics_channel";
const channel = diagnostics.channel("app.request");
const receive = (message, name) => console.log(name, message);
channel.subscribe(receive);
channel.publish({ path: "/" });
channel.unsubscribe(receive);Повторные вызовы channel(name) возвращают один и тот же Channel. Модуль также
экспортирует hasSubscribers, subscribe, unsubscribe, tracingChannel,
Channel и расширения Elide boundedChannel и BoundedChannel.
Каналы поддерживают bindStore, unbindStore и runStores, но поведение хранилищ
наследует частичное распространение асинхронного контекста, описанное в разделе
node:async_hooks.
Reference
Status: Full · 42 of 67 suite tests pass (62.7%) · since 1.1.0
Exports
| Export | Kind | Status | Notes |
|---|---|---|---|
Channel | class | Full | name, hasSubscribers, publish(), subscribe(), unsubscribe() |
channel() | function | Full | Returns a Channel object for the given name, creating one if it does not exist |
hasSubscribers() | function | Full | Returns whether the named channel has active subscribers |
subscribe() | function | Full | Subscribe a handler to the named channel |
unsubscribe() | function | Full | Unsubscribe a handler from the named channel |
Tests: node-api node:diagnostics-channel: 42 pass, 25 fail, 0 error, 1 skipped. Failing: test-diagnostics-channel-http2-client-stream-body-multiple-buffers-and-strings.js, test-diagnostics-channel-http2-client-stream-body-multiple-buffers.js, test-diagnostics-channel-http2-client-stream-body-no-chunks.js, test-diagnostics-channel-http2-client-stream-body-single-buffer.js, test-diagnostics-channel-http2-client-stream-body-single-string.js, test-diagnostics-channel-http2-client-stream-close-error.js, test-diagnostics-channel-http2-client-stream-close.js, test-diagnostics-channel-http2-client-stream-created.js, and 17 more.