Files
copilotkit__copilotkit/examples/slack/app/managed.ts
Ben Taylor 8a8e52d9e9 fix(runtime): non-optional listener.channels and honest lifecycle docs (OSS-646) (#6207)
Closes OSS-646. Split out of OSS-641 as the unambiguous half. This PR
does **not** change when activation happens — whether the long-running
wrappers should auto-connect stays open on OSS-641.

## Why

`createCopilotRuntimeHandler` builds the `ChannelManager` but opens no
connection; activation is lazy, triggered by the first
`channels.ready()`. That is deliberate (`fbf35ac59`, OSS-473) —
Cloudflare/Next isolates freeze and recycle per request, so cold starts
would mint conflicting listeners. Two things were left inconsistent with
it:

1. `endpoints/node.ts` still documented the pre-`fbf35ac59` world — "the
same `ChannelsControl` surface the underlying fetch handler **activates
at creation time**" — and labelled the one required call as `//
Optional:`. That's the TSDoc developers and coding agents see in-editor,
and it contradicted every channel-package README. Same failure class as
OSS-634.
2. `68349bc1f` gave the fetch handler a branded overload so
`handler.channels.ready()` type-checks without `?.`, but the node
wrapper never got it — so every call site, including our own example and
all nine showcase docs pages, was written defensively.

### A live consequence, found en route

`examples/slack/app/managed.ts` never called `ready()`. It built the
runtime, mounted the listener, logged `[channel] started managed Channel
"…"`, and only ever called `stop()` — so since activation went lazy it
has connected nothing while reporting success. It was written against
exactly the creation-time model the TSDoc described. Fixed here, with a
regression assertion.

## What changed

- **Types** — `createCopilotNodeListener` gets the branded overload pair
mirroring `createCopilotRuntimeHandler`: a runtime with at least one
declared Channel yields non-optional `.channels`; `activateChannels:
false` and channel-less runtimes keep the optional shape. Adds
`NodeCopilotListenerWithChannels`; both listener types are now exported
from `@copilotkit/runtime/v2/node`.
- **Docs** — node/express/hono TSDoc corrected: creation opens no
connection, `ready()` is what activates, and it is required on a
long-running host. Same stale claim fixed in the three example comments
and `examples/slack/README.md` that repeated it.
- **Call sites** — `?.` dropped from `examples/slack`, `examples/teams`,
both READMEs, and the nine `showcase/shell-docs` channel pages.

## Deliberate scope choices, called out

- **Express/Hono keep an optional `.channels`.** Only their TSDoc is
corrected here. Their own type docs name Node as the lifecycle-owning
surface and attach `.channels` best-effort, so the branded overload is
Node-only for now; `endpoints-channels.test.ts` still uses `!` for those
two. Say the word if the overload should extend to them.
- **The non-optional shape requires a literal `channels` tuple**
(`readonly [Channel, ...Channel[]]`). A runtime built from a
dynamically-assembled `Channel[]` is unbranded and still needs `?.`. Now
stated in the node TSDoc.
- **`examples/slack/app/managed.ts` now exits nonzero if activation
fails**, where before it stayed up serving HTTP with nothing connected.
Intentional — fail loud, and it matches `index.ts`. Note that `ready()`
resolves for `setup_required`, so a declared-but-unprovisioned channel
still logs as started.
- **Signal handlers are registered before awaiting activation** in
`managed.ts`, so a Ctrl-C inside the 30s activation window still tears
the Channel down instead of hitting Node's default handler.

## Verification

- **Type contract, red → green:** the new `KeyIsRequired<typeof
listener, "channels">` assertion in `handler-channels-types.test.ts`
failed to compile before the overload (`error TS2344: Type 'false' does
not satisfy the constraint 'true'`) and passes after.
- **Example bug, red → green:** stashing only `managed.ts` fails the new
guard with `expected "vi.fn()" to be called once, but got 0 times`.
- **Strict-null proof:** `slack-example` and `teams-example` both `tsc
--noEmit` clean under `strict: true` with the `?.` removed. This matters
because the runtime package compiles with `strict: false`, so its own
type test can only probe the optionality modifier structurally.
- Runtime channel suites 54/54; slack example 63/63.
- **Coverage limit:** the `managed.ts` guard is mocked — it proves the
example *calls* `ready()` with a bound, not that a Channel connects.
Nothing in CI exercises a real gateway connect for these examples.

🤖 Generated with [Claude Code](https://claude.com/claude-code)
2026-07-28 14:11:53 -05:00

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8.6 KiB
TypeScript

/**
* Intelligence (managed Channel) entrypoint for the same Slack bot as
* `app/index.ts`.
*
* `index.ts` is the SELF-HOSTED variant: it holds the Slack bot/app tokens and
* talks to Slack directly via the native `slack()` adapter. This file is the
* MANAGED variant: it holds no Slack credentials and no public Slack endpoint —
* Intelligence owns the Slack edge (signed ingress → app-api, egress via the
* Connector Outbox) and delivers turns to this process over its realtime
* transport.
*
* The bot itself — the agent, tools, context, commands, and turn handlers — is
* IDENTICAL to the native bot; only the transport changes. Instead of a
* launcher, the managed path now goes through the NORMAL runtime handler: you
* hand your `createChannel(...)` to `new CopilotRuntime({ …, channels })` and
* mount it with `createCopilotNodeListener`, then `await
* listener.channels.ready()` to activate the managed Channel (the runtime
* derives every infra id — project, adapter, channel — from the Intelligence
* config + the channel `name`, so the developer supplies NONE of them):
*
* native: createChannel({ adapters: [slack({ botToken, appToken }) ] }) // index.ts
* managed: new CopilotRuntime({ intelligence, identifyUser, channels }) // this file
* + createCopilotNodeListener({ runtime })
*
* Run: `pnpm --filter slack-example channel` with the intelligence config env
* set (see `.env.example`).
*/
import "dotenv/config";
import { createServer } from "node:http";
import { createChannel } from "@copilotkit/channels";
import {
defaultSlackTools,
defaultSlackContext,
SanitizingHttpAgent,
} from "@copilotkit/channels/slack";
import { CopilotRuntime, CopilotKitIntelligence } from "@copilotkit/runtime/v2";
import { createCopilotNodeListener } from "@copilotkit/runtime/v2/node";
import { appTools } from "./tools/index.js";
import { appContext } from "./context/app-context.js";
import { appCommands } from "./commands/index.js";
import { senderContext } from "./sender-context.js";
import { fileIssueSubmit, FILE_ISSUE_CALLBACK } from "./modals/file-issue.js";
import { closeBrowser } from "./render/browser.js";
const required = (name: string): string => {
const v = process.env[name];
if (!v) {
console.error(`Missing required env var: ${name}`);
process.exit(1);
}
return v;
};
/**
* The managed Channel `name` is chosen HERE, in code — it is the project-unique
* identifier the runtime uses to derive the managed Channel's activation config
* (there is no launcher and no `INTELLIGENCE_CHANNEL_*` env to supply).
*/
const channelName = "triage";
async function main() {
const agentUrl = required("AGENT_URL");
const agentHeaders = process.env.AGENT_AUTH_HEADER
? { Authorization: process.env.AGENT_AUTH_HEADER }
: undefined;
// Same Slack Bot as the native example, minus the adapter: the managed
// transport is attached by the runtime when the handler activates the
// Channel. Slack is the only managed provider here, so it always ships the
// Slack tools/context (the native example adds these conditionally per active
// adapter).
const support = createChannel({
name: channelName,
agent: (threadId) => {
const a = new SanitizingHttpAgent({
url: agentUrl,
headers: agentHeaders,
});
a.threadId = threadId;
return a;
},
tools: [...appTools, ...defaultSlackTools],
context: [...appContext, ...defaultSlackContext],
commands: appCommands,
});
// Turn + feature handlers — identical to the native example (app/index.ts).
support.onMention(async ({ thread, message }) => {
try {
// Channel history (app-api /api/channels/history) does NOT include the
// in-flight turn (unlike native adapters whose getHistory rebuilds the
// live thread), so pass the current message explicitly as `prompt` —
// otherwise runAgent runs with zero messages. Prefer multimodal parts.
await thread.runAgent({
prompt: message.contentParts?.length
? message.contentParts
: message.text,
context: senderContext(message.user, thread.platform),
});
} catch (err) {
console.error("[channel] agent run failed", err);
await thread
.post("Sorry — I hit an error handling that. Please try again.")
.catch((postErr: unknown) =>
console.error("[channel] failed to post agent error", postErr),
);
}
});
support.onModalSubmit(FILE_ISSUE_CALLBACK, fileIssueSubmit);
support.onThreadStarted(async ({ thread, user }) => {
if (!user?.name) return;
await thread.setSuggestedPrompts([
{
title: `Triage ${user.name}'s issues`,
message: "Triage my open issues",
},
{
title: "What shipped this week?",
message: "Summarize what shipped this week",
},
]);
});
// The Intelligence client. It holds the managed edge credentials; from these
// (plus the channel `name`) the runtime derives the managed Channel's
// activation config — project id, adapter, socket URL/auth — with no infra
// ids supplied by the developer.
// apiUrl/wsUrl default to CopilotKit's managed Intelligence platform; the env
// overrides target a self-hosted or dev deployment. Set both or neither: the
// API and realtime planes are separate hosts (api.… vs realtime.…), so
// neither can be derived from the other.
const intelligence = new CopilotKitIntelligence({
apiUrl: process.env.COPILOTKIT_INTELLIGENCE_URL,
wsUrl: process.env.COPILOTKIT_INTELLIGENCE_WS_URL,
apiKey: required("COPILOTKIT_API_KEY"),
});
const runtime = new CopilotRuntime({
// The Channel supplies its own agent (the SanitizingHttpAgent above), so no
// additional runtime-hosted agents are needed here.
agents: {},
intelligence,
// Demo stub — replace with your own auth-derived user identity (e.g. OIDC)
// before any multi-user deployment, or all users share one thread history.
identifyUser: () => ({ id: "demo-user", name: "Demo User" }),
channels: [support],
});
// The NORMAL handler is what runs the managed Channel: the Node listener
// creates the runtime handler and exposes `.channels` for activation +
// shutdown. Mounting it opens NO connection — `ready()` below activates the
// Channel over the Intelligence transport. There is no public Slack ingress on
// this port — Intelligence owns the Slack edge — but the server keeps the
// lifecycle-owning process alive.
const listener = createCopilotNodeListener({
runtime,
basePath: "/api/copilotkit",
});
const port = Number(process.env.PORT ?? 8300);
createServer(listener).listen(port, () => {
console.log(`[channel] listener on :${port}`);
});
const shutdown = async (signal: string) => {
console.log(`\n[channel] received ${signal}, stopping…`);
let exitCode = 0;
try {
await listener.channels.stop();
} catch (err) {
console.error("[channel] error stopping managed Channel", err);
exitCode = 1;
}
// Browser teardown is best-effort, but still surface a failure rather than
// swallow it silently.
await closeBrowser().catch((err: unknown) =>
console.error(
"[channel] browser cleanup failed (continuing shutdown)",
err,
),
);
process.exit(exitCode);
};
// A failed shutdown must not vanish — log it and exit nonzero.
const runShutdown = (signal: string): void => {
shutdown(signal).catch((err: unknown) => {
console.error(`[channel] fatal during ${signal} shutdown`, err);
process.exit(1);
});
};
// Registered BEFORE activation on purpose: `ready()` below can take up to its
// timeout, and a Ctrl-C inside that window must still tear the Channel down
// rather than hit Node's default handler and skip teardown.
process.on("SIGINT", () => runShutdown("SIGINT"));
process.on("SIGTERM", () => runShutdown("SIGTERM"));
// Required: this is the call that connects the managed Channel to the Realtime
// Gateway. Bound it so a wedged connect can't hang startup forever.
await listener.channels.ready({ timeoutMs: 30_000 });
console.log(`[channel] started managed Channel "${channelName}"`);
}
// Fail loud, not silent: surface any stray async error instead of letting it
// kill the process with no log (mirrors the native entrypoint).
process.on("unhandledRejection", (reason) => {
console.error("[channel] unhandledRejection:", reason);
});
process.on("uncaughtException", (err) => {
console.error("[channel] uncaughtException:", err);
});
main().catch((err: unknown) => {
console.error("[channel] fatal: failed to start managed Channel", err);
process.exit(1);
});