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);Des appels répétés à channel(name) renvoient le même Channel. Le module
exporte aussi hasSubscribers, subscribe, unsubscribe, tracingChannel,
Channel, ainsi que les extensions Elide boundedChannel et BoundedChannel.
Les canaux prennent en charge bindStore, unbindStore et runStores, mais le
comportement des stores hérite de la propagation partielle du contexte
asynchrone décrite dans 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.