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feat(channel-meta): expose globalThis.__fabric.getChannelType for narrow gating

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Inbound `message.created` already carries `xType` (dm / triage / group /
broadcast / etc.) — record it in a per-channel cache so other plugins
can answer "is this channel a DM?" without poking the Center API.

New module src/channel-meta.ts:
  - in-memory Map<channelId, xType>
  - lazily loaded from ~/.openclaw/fabric-channel-meta.json on first
    access (so first-ever DM after a fresh gateway start still hits
    cache from the previous run)
  - debounced 250ms flush on dirty; force-flush on gateway_stop
  - recordChannelType(channelId, xType): called from inbound
  - getChannelType(channelId): null if unknown — caller MUST treat null
    as "don't know", NOT as "assume DM" (would re-introduce the false-
    positive on group channels we're trying to eliminate)

Wiring:
  - inbound.ts socket.on('message.created'): records xType BEFORE the
    self-author / dedup gates (channel type is observer-agnostic)
  - index.ts: installs globalThis.__fabric = { getChannelType } on
    registerFull(); flushes on gateway_stop

Consumer: ClawPrompts' fabric-chat-injector will start gating its prompt
injection on getChannelType(channelId) === 'dm' (companion PR on
ClawPrompts). Removes the phase-1 "any fabric channel" false-positive.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
h z
2026-05-25 11:28:36 +01:00
parent c330571bcb
commit c5429129d9
7 changed files with 281 additions and 4 deletions
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22
index.ts
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@@ -7,6 +7,7 @@ import { defineChannelPluginEntry } from 'openclaw/plugin-sdk/core';
import type { OpenClawPluginApi } from 'openclaw/plugin-sdk/core';
import { fabricChannelPlugin } from './src/channel.js';
import { flushAllFabric } from './src/coalesce.js';
import { getChannelType, flushChannelMeta } from './src/channel-meta.js';
import { FabricInbound } from './src/inbound.js';
import { listEnabledFabricAccounts } from './src/accounts.js';
import { registerFabricTools } from './src/tools.js';
@@ -62,6 +63,27 @@ export default defineChannelPluginEntry({
identity,
);
// Cross-plugin API: globalThis.__fabric
// Consumed by ClawPrompts' fabric-chat-injector to narrow its prompt
// injection to DM-typed channels only. The channel-meta cache is
// populated lazily from inbound (message.created carries xType) and
// persisted to ~/.openclaw/fabric-channel-meta.json — so even the
// very first DM after a fresh gateway start hits cache from the
// previous run rather than firing the injector on the wrong type.
//
// null return = channel never seen (cache cold). Callers MUST NOT
// fall back to "assume DM" — fail closed on unknown.
{
const _G = globalThis as Record<string, unknown>;
_G['__fabric'] = { getChannelType };
// Flush channel-meta cache when the gateway shuts down so
// recently-recorded xType entries don't get lost.
api.on('gateway_stop', () => {
try { flushChannelMeta(); } catch { /* ignore */ }
});
api.logger.info('fabric: __fabric cross-plugin API installed (getChannelType)');
}
api.on('gateway_start', () => {
const _G = globalThis as Record<string, unknown>;
if (_G._fabricInboundStarted) return;