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import type { Extension, HostAPI, Manifest } from "@dispatch/kernel";
import {
cacheWarmHandle,
conversationClosed,
turnSettled,
turnStarted,
warmCompleted,
} from "@dispatch/session-orchestrator";
import type { SurfaceContext, SurfaceProvider } from "@dispatch/surface-registry";
import { surfaceRegistryHandle } from "@dispatch/surface-registry";
import type { SurfaceSpec } from "@dispatch/ui-contract";
import {
buildConversationSpec,
buildDefaultSpec,
parseIntervalPayload,
secondsToMs,
} from "./pure.js";
import { createCacheWarmer } from "./warmer.js";
export const manifest: Manifest = {
id: "cache-warming",
name: "Cache Warming",
version: "0.0.0",
apiVersion: "^0.1.0",
trust: "bundled",
activation: "eager",
dependsOn: ["session-orchestrator", "surface-registry"],
capabilities: {},
contributes: {
services: ["cache-warming/surface"],
},
};
export function activate(host: HostAPI): void {
const warmService = host.getService(cacheWarmHandle);
const registry = host.getService(surfaceRegistryHandle);
const storage = host.storage("cache-warming");
const subscribers = new Set<() => void>();
const timeoutMap = new Map<number, ReturnType<typeof setTimeout>>();
let nextTimerId = 1;
const warmer = createCacheWarmer({
warm: warmService.warm,
storage,
logger: host.logger,
timers: {
setTimer(fn, ms) {
const id = nextTimerId++;
timeoutMap.set(id, setTimeout(fn, ms));
return id;
},
clearTimer(id) {
const timeout = timeoutMap.get(id);
if (timeout !== undefined) {
clearTimeout(timeout);
timeoutMap.delete(id);
}
},
},
now: () => Date.now(),
onSurfaceChange: () => {
for (const notify of subscribers) {
notify();
}
},
});
host.on(turnStarted, (payload) => {
warmer.onTurnStarted(payload.conversationId);
});
host.on(turnSettled, (payload) => {
warmer.onTurnSettled(payload.conversationId, {
...(payload.cwd !== undefined ? { cwd: payload.cwd } : {}),
...(payload.modelName !== undefined ? { modelName: payload.modelName } : {}),
});
});
host.on(warmCompleted, (payload) => {
warmer.onWarmCompleted(payload);
});
host.on(conversationClosed, (payload) => {
// Sync part (cancel + disable) runs before the first await inside;
// only the settings persist is deferred.
void warmer.onConversationClosed(payload.conversationId);
});
function getSpec(context?: SurfaceContext): SurfaceSpec {
const convId = context?.conversationId;
if (convId === undefined) {
return buildDefaultSpec();
}
const state = warmer.getState(convId);
return buildConversationSpec(
state.enabled,
state.intervalMs,
state.lastPct,
state.lastExpectedPct,
state.nextWarmAt,
state.lastWarmAt,
);
}
async function invoke(
actionId: string,
payload?: unknown,
context?: SurfaceContext,
): Promise<void> {
const convId = context?.conversationId;
if (convId === undefined) return;
if (actionId === "cache-warming/toggle") {
const current = warmer.getState(convId);
await warmer.setEnabled(convId, !current.enabled);
}
if (actionId === "cache-warming/set-interval") {
const seconds = parseIntervalPayload(payload);
if (seconds === null) return;
const ms = secondsToMs(seconds);
if (ms === null) return;
await warmer.setIntervalMs(convId, ms);
}
}
const provider: SurfaceProvider = {
catalogEntry: {
id: "cache-warming",
region: "side",
title: "Cache Warming",
scope: "conversation",
},
getSpec,
invoke,
subscribe(onChange) {
subscribers.add(onChange);
return () => {
subscribers.delete(onChange);
};
},
};
registry.register(provider);
host.logger.info("cache-warming: registered");
}
export const extension: Extension = {
manifest,
activate,
};
|
