plugins: harden global hook runner state (#40184)

src/plugins/hook-runner-global.test.ts

@@ -0,0 +1,49 @@
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { createMockPluginRegistry } from "./hooks.test-helpers.js";
+
+async function importHookRunnerGlobalModule() {
+  return import("./hook-runner-global.js");
+}
+
+afterEach(async () => {
+  const mod = await importHookRunnerGlobalModule();
+  mod.resetGlobalHookRunner();
+  vi.resetModules();
+});
+
+describe("hook-runner-global", () => {
+  it("preserves the initialized runner across module reloads", async () => {
+    const modA = await importHookRunnerGlobalModule();
+    const registry = createMockPluginRegistry([{ hookName: "message_received", handler: vi.fn() }]);
+
+    modA.initializeGlobalHookRunner(registry);
+    expect(modA.getGlobalHookRunner()?.hasHooks("message_received")).toBe(true);
+
+    vi.resetModules();
+
+    const modB = await importHookRunnerGlobalModule();
+    expect(modB.getGlobalHookRunner()).not.toBeNull();
+    expect(modB.getGlobalHookRunner()?.hasHooks("message_received")).toBe(true);
+    expect(modB.getGlobalPluginRegistry()).toBe(registry);
+  });
+
+  it("clears the shared state across module reloads", async () => {
+    const modA = await importHookRunnerGlobalModule();
+    const registry = createMockPluginRegistry([{ hookName: "message_received", handler: vi.fn() }]);
+
+    modA.initializeGlobalHookRunner(registry);
+
+    vi.resetModules();
+
+    const modB = await importHookRunnerGlobalModule();
+    modB.resetGlobalHookRunner();
+    expect(modB.getGlobalHookRunner()).toBeNull();
+    expect(modB.getGlobalPluginRegistry()).toBeNull();
+
+    vi.resetModules();
+
+    const modC = await importHookRunnerGlobalModule();
+    expect(modC.getGlobalHookRunner()).toBeNull();
+    expect(modC.getGlobalPluginRegistry()).toBeNull();
+  });
+});

src/plugins/hook-runner-global.ts

@@ -12,16 +12,31 @@ import type { PluginHookGatewayContext, PluginHookGatewayStopEvent } from "./typ
 
 const log = createSubsystemLogger("plugins");
 
-let globalHookRunner: HookRunner | null = null;
-let globalRegistry: PluginRegistry | null = null;
+type HookRunnerGlobalState = {
+  hookRunner: HookRunner | null;
+  registry: PluginRegistry | null;
+};
+
+const hookRunnerGlobalStateKey = Symbol.for("openclaw.plugins.hook-runner-global-state");
+
+function getHookRunnerGlobalState(): HookRunnerGlobalState {
+  const globalStore = globalThis as typeof globalThis & {
+    [hookRunnerGlobalStateKey]?: HookRunnerGlobalState;
+  };
+  return (globalStore[hookRunnerGlobalStateKey] ??= {
+    hookRunner: null,
+    registry: null,
+  });
+}
 
 /**
  * Initialize the global hook runner with a plugin registry.
  * Called once when plugins are loaded during gateway startup.
  */
 export function initializeGlobalHookRunner(registry: PluginRegistry): void {
-  globalRegistry = registry;
-  globalHookRunner = createHookRunner(registry, {
+  const state = getHookRunnerGlobalState();
+  state.registry = registry;
+  state.hookRunner = createHookRunner(registry, {
     logger: {
       debug: (msg) => log.debug(msg),
       warn: (msg) => log.warn(msg),
@@ -41,7 +56,7 @@ export function initializeGlobalHookRunner(registry: PluginRegistry): void {
  * Returns null if plugins haven't been loaded yet.
  */
 export function getGlobalHookRunner(): HookRunner | null {
-  return globalHookRunner;
+  return getHookRunnerGlobalState().hookRunner;
 }
 
 /**
@@ -49,14 +64,14 @@ export function getGlobalHookRunner(): HookRunner | null {
  * Returns null if plugins haven't been loaded yet.
  */
 export function getGlobalPluginRegistry(): PluginRegistry | null {
-  return globalRegistry;
+  return getHookRunnerGlobalState().registry;
 }
 
 /**
  * Check if any hooks are registered for a given hook name.
  */
 export function hasGlobalHooks(hookName: Parameters<HookRunner["hasHooks"]>[0]): boolean {
-  return globalHookRunner?.hasHooks(hookName) ?? false;
+  return getHookRunnerGlobalState().hookRunner?.hasHooks(hookName) ?? false;
 }
 
 export async function runGlobalGatewayStopSafely(params: {
@@ -83,6 +98,7 @@ export async function runGlobalGatewayStopSafely(params: {
  * Reset the global hook runner (for testing).
  */
 export function resetGlobalHookRunner(): void {
-  globalHookRunner = null;
-  globalRegistry = null;
+  const state = getHookRunnerGlobalState();
+  state.hookRunner = null;
+  state.registry = null;
 }