673 lines
23 KiB
TypeScript
673 lines
23 KiB
TypeScript
/**
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* PluginRunner - Bridge between PluginLoader and Fusion Engine
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*
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* Orchestrates plugin loading into the engine, invokes hooks at lifecycle points,
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* and provides plugin tools to agent sessions.
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*/
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import type { TaskStore, Task } from "@fusion/core";
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import type {
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PluginLoader,
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PluginStore,
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} from "@fusion/core";
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import type {
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FusionPlugin,
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PluginToolDefinition,
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PluginRouteDefinition,
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PluginUiSlotDefinition,
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PluginRuntimeRegistration,
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PluginContext,
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} from "@fusion/core";
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import type { ToolDefinition } from "@mariozechner/pi-coding-agent";
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import { Type } from "@mariozechner/pi-ai";
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import { createLogger, executorLog } from "./logger.js";
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// Type for the task store's event data
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interface TaskMovedEvent {
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task: Task;
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from: string;
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to: string;
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}
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export interface PluginRunnerOptions {
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pluginLoader: PluginLoader;
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pluginStore: PluginStore;
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taskStore: TaskStore;
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rootDir: string;
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hookTimeoutMs?: number;
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}
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/**
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* Cached converted tools - rebuilt when plugin state changes
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*/
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interface CachedTools {
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tools: ToolDefinition[];
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version: number;
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}
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/**
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* Cached routes - rebuilt when plugin state changes
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*/
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interface CachedRoutes {
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routes: Array<{ pluginId: string; route: PluginRouteDefinition }>;
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version: number;
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}
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/**
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* Cached UI slots - rebuilt when plugin state changes
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*/
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interface CachedUiSlots {
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slots: Array<{ pluginId: string; slot: PluginUiSlotDefinition }>;
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version: number;
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}
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/**
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* Cached runtimes - rebuilt when plugin state changes
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*/
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interface CachedRuntimes {
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runtimes: Array<{ pluginId: string; runtime: PluginRuntimeRegistration }>;
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version: number;
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}
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const DEFAULT_HOOK_TIMEOUT_MS = 5000;
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export class PluginRunner {
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private readonly log = createLogger("plugin-runner");
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private cachedTools: CachedTools | null = null;
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private cachedRoutes: CachedRoutes | null = null;
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private cachedUiSlots: CachedUiSlots | null = null;
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private cachedRuntimes: CachedRuntimes | null = null;
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private toolsCacheVersion = 0;
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private routesCacheVersion = 0;
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private uiSlotsCacheVersion = 0;
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private runtimesCacheVersion = 0;
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private hookTimeoutMs: number;
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// Event handler references for cleanup
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private handlePluginEnabled: (plugin: import("@fusion/core").PluginInstallation) => void;
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private handlePluginDisabled: (plugin: import("@fusion/core").PluginInstallation) => void;
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private handlePluginUnregistered: (plugin: import("@fusion/core").PluginInstallation) => void;
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private handlePluginStateChanged!: () => void;
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private handlePluginUpdated!: () => void;
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private handlePluginLoaded: (event: { pluginId: string }) => void;
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private handlePluginUnloaded: (event: { pluginId: string }) => void;
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private handlePluginReloaded: (event: { pluginId: string }) => void;
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constructor(private options: PluginRunnerOptions) {
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this.hookTimeoutMs = options.hookTimeoutMs ?? DEFAULT_HOOK_TIMEOUT_MS;
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// Create bound event handlers for proper cleanup
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this.handlePluginEnabled = this.onPluginEnabled.bind(this);
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this.handlePluginDisabled = this.onPluginDisabled.bind(this);
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this.handlePluginUnregistered = this.onPluginUnregistered.bind(this);
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this.handlePluginStateChanged = this.onPluginStateChanged.bind(this);
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this.handlePluginUpdated = this.onPluginUpdated.bind(this);
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this.handlePluginLoaded = this.onPluginLoaded.bind(this);
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this.handlePluginUnloaded = this.onPluginUnloaded.bind(this);
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this.handlePluginReloaded = this.onPluginReloaded.bind(this);
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}
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/**
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* Initialize the plugin runner.
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* Loads all plugins and subscribes to store events.
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*/
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async init(): Promise<void> {
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executorLog.log("Initializing PluginRunner...");
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// Load all enabled plugins
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const result = await this.options.pluginLoader.loadAllPlugins();
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executorLog.log(`PluginRunner loaded ${result.loaded} plugins (${result.errors} errors)`);
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// Subscribe to store events for task lifecycle hooks
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this.subscribeToStoreEvents();
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// Subscribe to plugin store events for automatic hot-load/unload
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this.options.pluginStore.on("plugin:enabled", this.handlePluginEnabled);
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this.options.pluginStore.on("plugin:disabled", this.handlePluginDisabled);
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this.options.pluginStore.on("plugin:unregistered", this.handlePluginUnregistered);
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this.options.pluginStore.on("plugin:stateChanged", this.handlePluginStateChanged);
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this.options.pluginStore.on("plugin:updated", this.handlePluginUpdated);
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// Subscribe to plugin loader events for cache invalidation
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this.options.pluginLoader.on("plugin:loaded", this.handlePluginLoaded);
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this.options.pluginLoader.on("plugin:unloaded", this.handlePluginUnloaded);
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this.options.pluginLoader.on("plugin:reloaded", this.handlePluginReloaded);
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// Build initial caches
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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}
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/**
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* Shutdown the plugin runner.
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* Stops all plugins and unsubscribes from events.
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*/
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async shutdown(): Promise<void> {
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executorLog.log("Shutting down PluginRunner...");
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// Unsubscribe from task store events
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this.unsubscribeFromStoreEvents();
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// Unsubscribe from plugin store events
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this.options.pluginStore.off("plugin:enabled", this.handlePluginEnabled);
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this.options.pluginStore.off("plugin:disabled", this.handlePluginDisabled);
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this.options.pluginStore.off("plugin:unregistered", this.handlePluginUnregistered);
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this.options.pluginStore.off("plugin:stateChanged", this.handlePluginStateChanged);
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this.options.pluginStore.off("plugin:updated", this.handlePluginUpdated);
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// Unsubscribe from plugin loader events
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this.options.pluginLoader.off("plugin:loaded", this.handlePluginLoaded);
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this.options.pluginLoader.off("plugin:unloaded", this.handlePluginUnloaded);
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this.options.pluginLoader.off("plugin:reloaded", this.handlePluginReloaded);
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// Stop all plugins
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await this.options.pluginLoader.stopAllPlugins();
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executorLog.log("PluginRunner shutdown complete");
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}
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/**
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* Invoke a named hook on all loaded plugins.
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* Errors are isolated - one plugin's failure doesn't affect others.
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* Each hook call has a timeout (default 5 seconds).
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*/
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async invokeHook(hookName: keyof FusionPlugin["hooks"], ...args: unknown[]): Promise<void> {
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await this.options.pluginLoader.invokeHook(hookName, ...args);
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}
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/**
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* Get all plugin tools converted to the engine's ToolDefinition format.
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* Tools are cached and only rebuilt when plugin state changes.
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*/
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getPluginTools(): ToolDefinition[] {
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if (!this.cachedTools || this.cachedTools.version !== this.toolsCacheVersion) {
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const pluginTools = this.options.pluginLoader.getPluginTools();
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this.cachedTools = {
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tools: this.convertPluginTools(pluginTools),
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version: this.toolsCacheVersion,
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};
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}
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return this.cachedTools.tools;
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}
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/**
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* Get all plugin routes with their plugin IDs.
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* Routes are cached and only rebuilt when plugin state changes.
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*/
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getPluginRoutes(): Array<{ pluginId: string; route: PluginRouteDefinition }> {
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if (!this.cachedRoutes || this.cachedRoutes.version !== this.routesCacheVersion) {
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this.cachedRoutes = {
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routes: this.options.pluginLoader.getPluginRoutes(),
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version: this.routesCacheVersion,
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};
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}
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return this.cachedRoutes.routes;
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}
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/**
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* Get all UI slot definitions from loaded plugins.
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* UI slots are cached and only rebuilt when plugin state changes.
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*/
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getPluginUiSlots(): Array<{ pluginId: string; slot: PluginUiSlotDefinition }> {
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if (!this.cachedUiSlots || this.cachedUiSlots.version !== this.uiSlotsCacheVersion) {
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this.cachedUiSlots = {
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slots: this.options.pluginLoader.getPluginUiSlots(),
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version: this.uiSlotsCacheVersion,
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};
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}
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return this.cachedUiSlots.slots;
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}
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/**
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* Get all runtime registrations from loaded plugins.
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* Runtimes are cached and only rebuilt when plugin state changes.
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*/
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getPluginRuntimes(): Array<{ pluginId: string; runtime: PluginRuntimeRegistration }> {
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if (!this.cachedRuntimes || this.cachedRuntimes.version !== this.runtimesCacheVersion) {
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this.cachedRuntimes = {
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runtimes: this.options.pluginLoader.getPluginRuntimes(),
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version: this.runtimesCacheVersion,
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};
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}
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return this.cachedRuntimes.runtimes;
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}
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/**
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* Get a specific runtime registration by its runtimeId.
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*
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* @param runtimeId - The unique runtime identifier to find
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* @returns The runtime registration with plugin ID, or undefined if not found
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*/
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getRuntimeById(runtimeId: string): { pluginId: string; runtime: PluginRuntimeRegistration } | undefined {
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const registrations = this.getPluginRuntimes();
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return registrations.find((reg) => reg.runtime.metadata.runtimeId === runtimeId);
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}
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/**
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* Get the underlying plugin loader.
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*/
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getLoader(): PluginLoader {
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return this.options.pluginLoader;
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}
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/**
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* Get the underlying plugin store.
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*/
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getStore(): PluginStore {
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return this.options.pluginStore;
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}
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/**
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* Reload a plugin: stop the old instance, re-import, and start the new one.
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* This invalidates the tools, routes, uiSlots, and runtimes caches.
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*/
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async reloadPlugin(pluginId: string): Promise<void> {
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executorLog.log(`Reloading plugin: ${pluginId}`);
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await this.options.pluginLoader.reloadPlugin(pluginId);
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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executorLog.log(`Plugin ${pluginId} reloaded`);
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}
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// ── Event Handlers for Hot-Load/Unload ─────────────────────────
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/**
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* Handle plugin:enabled event - automatically load the plugin.
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*/
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private async onPluginEnabled(plugin: import("@fusion/core").PluginInstallation): Promise<void> {
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// Invalidate caches before the operation to ensure fresh state regardless of outcome
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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try {
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executorLog.log(`Auto-loading enabled plugin: ${plugin.id}`);
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await this.options.pluginLoader.loadPlugin(plugin.id);
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} catch (err) {
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this.log.error(`Failed to auto-load plugin ${plugin.id}:`, err);
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// Don't rethrow - error isolation
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}
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}
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/**
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* Handle plugin:disabled event - automatically stop the plugin.
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*/
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private async onPluginDisabled(plugin: import("@fusion/core").PluginInstallation): Promise<void> {
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// Invalidate caches before the operation to ensure fresh state regardless of outcome
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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try {
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executorLog.log(`Auto-stopping disabled plugin: ${plugin.id}`);
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await this.options.pluginLoader.stopPlugin(plugin.id);
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} catch (err) {
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this.log.error(`Failed to auto-stop plugin ${plugin.id}:`, err);
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// Don't rethrow - error isolation
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}
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}
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/**
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* Handle plugin:unregistered event - ensure plugin is stopped.
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*/
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private async onPluginUnregistered(plugin: import("@fusion/core").PluginInstallation): Promise<void> {
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// Invalidate caches before the operation to ensure fresh state regardless of outcome
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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try {
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executorLog.log(`Stopping unregistered plugin: ${plugin.id}`);
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await this.options.pluginLoader.stopPlugin(plugin.id);
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} catch (err: unknown) {
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const msg = err instanceof Error ? err.message : String(err);
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this.log.warn(`Failed to stop unregistered plugin ${plugin.id}: ${msg} (plugin '${plugin.id}')`);
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}
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}
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/**
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* Handle plugin state changes - invalidate caches.
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*/
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private onPluginStateChanged(): void {
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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}
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/**
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* Handle plugin updates - invalidate caches.
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*/
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private onPluginUpdated(): void {
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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}
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/**
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* Handle plugin:loaded event from loader - invalidate caches.
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*/
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private onPluginLoaded(_event: { pluginId: string }): void {
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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}
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/**
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* Handle plugin:unloaded event from loader - invalidate caches.
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*/
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private onPluginUnloaded(_event: { pluginId: string }): void {
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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}
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/**
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* Handle plugin:reloaded event from loader - invalidate caches.
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*/
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private onPluginReloaded(_event: { pluginId: string }): void {
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this.invalidateToolsCache();
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this.invalidateRoutesCache();
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this.invalidateUiSlotsCache();
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this.invalidateRuntimesCache();
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}
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// ── Tool Conversion ───────────────────────────────────────────────
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/**
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* Convert PluginToolDefinition[] to ToolDefinition[] for the pi-coding-agent.
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*
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* Plugin tools have this signature:
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* execute(params: Record<string, unknown>, ctx: PluginContext): Promise<PluginToolResult>
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*
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* Engine ToolDefinition has this signature:
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* execute(toolCallId, params, signal, onUpdate, ctx): Promise<AgentToolResult>
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*
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* The conversion:
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* 1. Prefixes the tool name with "plugin_"
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* 2. Maps name/description directly (use name as label)
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* 3. Wraps execute to extract params and call plugin's execute
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* 4. Returns { content: result.content } format
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*/
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private convertPluginTools(pluginTools: PluginToolDefinition[]): ToolDefinition[] {
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return pluginTools.map((pluginTool) => {
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// Get the plugin context for this tool
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const pluginId = this.getPluginIdForTool(pluginTool);
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const plugin = pluginId ? this.options.pluginLoader.getPlugin(pluginId) : undefined;
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// Store the timeout for use in the closure
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const timeout = this.hookTimeoutMs;
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// Create wrapper that extracts params and uses stored context
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const wrappedExecute = async (
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_toolCallId: string,
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params: Record<string, unknown>,
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_signal: AbortSignal | undefined,
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_onUpdate: unknown | undefined,
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_ctx: unknown,
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) => {
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if (!plugin) {
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return {
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content: [{ type: "text" as const, text: "Plugin not available" }],
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details: {},
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};
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}
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// Create context for this specific tool call
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const context = await this.createToolContext(plugin);
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try {
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const result = await this.withTimeout(
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pluginTool.execute(params as Record<string, unknown>, context),
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timeout,
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`Tool ${pluginTool.name} execution timed out`,
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);
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// Convert PluginToolResult to AgentToolResult
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return {
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content: result.content,
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isError: result.isError ?? false,
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details: result.details ?? {},
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};
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} catch (err) {
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return {
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content: [{ type: "text" as const, text: `Tool execution failed: ${err instanceof Error ? err.message : String(err)}` }],
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isError: true,
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details: {},
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};
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}
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};
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// Use Type.Any for plugin tool parameters since plugins use JSON Schema
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// which is compatible with TypeBox's Any type
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const anySchema = Type.Any();
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return {
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name: `plugin_${pluginTool.name}`,
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label: pluginTool.name,
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description: pluginTool.description,
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parameters: anySchema,
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execute: wrappedExecute,
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};
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});
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}
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/**
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* Get the plugin ID that owns a tool.
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* We infer it from the loader's perspective - tools are stored per plugin.
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*/
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private getPluginIdForTool(tool: PluginToolDefinition): string | undefined {
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const loadedPlugins = this.options.pluginLoader.getLoadedPlugins();
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for (const plugin of loadedPlugins) {
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if (plugin.tools?.some((t) => t.name === tool.name)) {
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return plugin.manifest.id;
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}
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}
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return undefined;
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}
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/**
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* Create a plugin context for tool execution.
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*/
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private async createToolContext(plugin: FusionPlugin): Promise<PluginContext> {
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const settings = await this.getPluginSettings(plugin.manifest.id);
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return {
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pluginId: plugin.manifest.id,
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taskStore: this.options.taskStore,
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settings,
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logger: this.createPluginLogger(plugin.manifest.id),
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emitEvent: (event: string, data: unknown) => {
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this.log.log(`[plugin:${plugin.manifest.id}] Event: ${event}`, data);
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},
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};
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}
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/**
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* Create a plugin context for runtime instantiation.
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*
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* This context is passed to plugin runtime factories to allow them
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* to initialize their runtime instances with access to task store,
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* settings, and logging.
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*
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* @param pluginId - The plugin ID to create context for
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* @returns The plugin context, or null if the plugin is not loaded
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*/
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async createRuntimeContext(pluginId: string): Promise<PluginContext | null> {
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const plugin = this.options.pluginLoader.getPlugin(pluginId);
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if (!plugin) {
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this.log.warn(`Plugin "${pluginId}" not loaded, cannot create runtime context`);
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return null;
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}
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const settings = await this.getPluginSettings(pluginId);
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return {
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pluginId,
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taskStore: this.options.taskStore,
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settings,
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logger: this.createPluginLogger(pluginId),
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emitEvent: (event: string, data: unknown) => {
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this.log.log(`[plugin:${pluginId}] Event: ${event}`, data);
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},
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};
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}
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/**
|
|
* Get settings for a plugin from the store.
|
|
*/
|
|
private async getPluginSettings(pluginId: string): Promise<Record<string, unknown>> {
|
|
try {
|
|
const plugin = await this.options.pluginStore.getPlugin(pluginId);
|
|
return plugin.settings;
|
|
} catch (err) {
|
|
this.log.warn(`Failed to get settings for plugin ${pluginId}: ${err instanceof Error ? err.message : String(err)}`);
|
|
return {};
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Create a logger for a plugin.
|
|
*/
|
|
private createPluginLogger(pluginId: string): import("@fusion/core").PluginLogger {
|
|
const prefix = `[plugin:${pluginId}]`;
|
|
return {
|
|
info: (...args: unknown[]) => this.log.log(prefix, ...args),
|
|
warn: (...args: unknown[]) => this.log.warn(prefix, ...args),
|
|
error: (...args: unknown[]) => this.log.error(prefix, ...args),
|
|
debug: (...args: unknown[]) => {
|
|
if (process.env.DEBUG?.includes("plugins")) {
|
|
this.log.log(prefix, ...args);
|
|
}
|
|
},
|
|
};
|
|
}
|
|
|
|
// ── Cache Invalidation ───────────────────────────────────────────
|
|
|
|
/**
|
|
* Invalidate the tools cache, forcing rebuild on next access.
|
|
*/
|
|
private invalidateToolsCache(): void {
|
|
this.toolsCacheVersion++;
|
|
this.log.log(`Tools cache invalidated (version: ${this.toolsCacheVersion})`);
|
|
}
|
|
|
|
/**
|
|
* Invalidate the routes cache, forcing rebuild on next access.
|
|
*/
|
|
private invalidateRoutesCache(): void {
|
|
this.routesCacheVersion++;
|
|
this.log.log(`Routes cache invalidated (version: ${this.routesCacheVersion})`);
|
|
}
|
|
|
|
/**
|
|
* Invalidate the UI slots cache, forcing rebuild on next access.
|
|
*/
|
|
private invalidateUiSlotsCache(): void {
|
|
this.uiSlotsCacheVersion++;
|
|
this.log.log(`UI slots cache invalidated (version: ${this.uiSlotsCacheVersion})`);
|
|
}
|
|
|
|
/**
|
|
* Invalidate the runtimes cache, forcing rebuild on next access.
|
|
*/
|
|
private invalidateRuntimesCache(): void {
|
|
this.runtimesCacheVersion++;
|
|
this.log.log(`Runtimes cache invalidated (version: ${this.runtimesCacheVersion})`);
|
|
}
|
|
|
|
// ── Store Event Subscriptions ────────────────────────────────────
|
|
|
|
/**
|
|
* Subscribe to TaskStore events for task lifecycle hooks.
|
|
*/
|
|
private subscribeToStoreEvents(): void {
|
|
this.options.taskStore.on("task:created", this.handleTaskCreated);
|
|
this.options.taskStore.on("task:moved", this.handleTaskMoved);
|
|
}
|
|
|
|
/**
|
|
* Unsubscribe from TaskStore events.
|
|
*/
|
|
private unsubscribeFromStoreEvents(): void {
|
|
this.options.taskStore.off("task:created", this.handleTaskCreated);
|
|
this.options.taskStore.off("task:moved", this.handleTaskMoved);
|
|
}
|
|
|
|
/**
|
|
* Handle task created event - invoke onTaskCreated hook.
|
|
*/
|
|
private handleTaskCreated = (task: Task): void => {
|
|
// Fire and forget - don't await
|
|
void this.invokeHookSafe("onTaskCreated", task);
|
|
};
|
|
|
|
/**
|
|
* Handle task moved event - invoke onTaskMoved and onTaskCompleted hooks.
|
|
*/
|
|
private handleTaskMoved = (event: TaskMovedEvent): void => {
|
|
const { task, from, to } = event;
|
|
|
|
// Fire and forget - don't await
|
|
void this.invokeHookSafe("onTaskMoved", task, from, to);
|
|
|
|
// If task completed, invoke onTaskCompleted hook
|
|
if (to === "done") {
|
|
void this.invokeHookSafe("onTaskCompleted", task);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Invoke a hook with error isolation and logging.
|
|
*/
|
|
private async invokeHookSafe(hookName: keyof FusionPlugin["hooks"], ...args: unknown[]): Promise<void> {
|
|
try {
|
|
await this.withTimeout(
|
|
this.invokeHook(hookName, ...args),
|
|
this.hookTimeoutMs,
|
|
`Hook ${hookName} timed out`,
|
|
);
|
|
} catch (err) {
|
|
this.log.warn(`Hook ${hookName} failed: ${err instanceof Error ? err.message : String(err)}`);
|
|
}
|
|
}
|
|
|
|
// ── Event Handlers for Cache ────────────────────────────────────
|
|
|
|
// Note: handlePluginStateChanged and handlePluginUpdated are defined
|
|
// in the hot-load event handlers section above
|
|
|
|
// ── Utilities ────────────────────────────────────────────────────
|
|
|
|
/**
|
|
* Execute a promise with a timeout.
|
|
* Returns the result on success, throws on timeout.
|
|
*/
|
|
private withTimeout<T>(promise: Promise<T>, ms: number, timeoutMessage: string): Promise<T> {
|
|
return new Promise((resolve, reject) => {
|
|
const timer = setTimeout(() => {
|
|
reject(new Error(timeoutMessage));
|
|
}, ms);
|
|
|
|
promise
|
|
.then((result) => {
|
|
clearTimeout(timer);
|
|
resolve(result);
|
|
})
|
|
.catch((err) => {
|
|
clearTimeout(timer);
|
|
reject(err);
|
|
});
|
|
});
|
|
}
|
|
}
|