feat: 插件注册增加override选项

packages/designer/src/plugin/plugin-manager.ts

@@ -31,7 +31,18 @@ export class LowCodePluginManager implements ILowCodePluginManager {
     const config = pluginConfigCreator(ctx, pluginOptions);
     invariant(config.name, `${config.name} required`, config);
     ctx.setLogger(config);
-    invariant(!this.pluginsMap.has(config.name), `${config.name} already exists`, this.pluginsMap.get(config.name));
+    const allowOverride = options?.override === true;
+    if (this.pluginsMap.has(config.name)) {
+      if (!allowOverride) {
+        throw new Error(`Plugin with name ${config.name} exists`);
+      } else {
+        // clear existing plugin
+        const originalPlugin = this.pluginsMap.get(config.name);
+        logger.log('plugin override, originalPlugin with name ', config.name, ' will be destroyed, config:', originalPlugin?.config);
+        originalPlugin?.destroy();
+        this.pluginsMap.delete(config.name);
+      }
+    }
     const plugin = new LowCodePlugin(this, config, pluginOptions);
     if (options?.autoInit) {
       await plugin.init();

packages/designer/src/plugin/plugin-types.ts

@@ -79,4 +79,6 @@ export type ILowCodePluginManager = ILowCodePluginManagerCore & ILowCodePluginMa
 
 export type LowCodeRegisterOptions = {
   autoInit?: boolean;
+  // allow overriding existing plugin with same name when override === true
+  override?: boolean;
 };

packages/designer/tests/plugin/plugin-manager.test.ts

@@ -136,6 +136,51 @@ describe('plugin 测试', () => {
     expect(mockFn).toHaveBeenCalledTimes(2);
   });
 
+  it('默认情况不允许重复注册', async () => {
+    const mockFn = jest.fn();
+    const mockPlugin = (ctx: ILowCodePluginContext, options: any) => {
+      return {
+        name: 'demoDuplicated',
+        init: mockFn,
+      };
+    };
+    pluginManager.register(mockPlugin, { test: 1 });
+    pluginManager.register(mockPlugin, { test: 1 }).catch(e => {
+      expect(e).toEqual(new Error('Plugin with name demoDuplicated exists'));
+    });
+    await pluginManager.init();
+  });
+
+  it('插件增加 override 参数时可以重复注册', async () => {
+    const mockFn = jest.fn();
+    const mockPlugin = (ctx: ILowCodePluginContext, options: any) => {
+      return {
+        name: 'demoOverride',
+        init: mockFn,
+      };
+    };
+    pluginManager.register(mockPlugin, { test: 1 });
+    pluginManager.register(mockPlugin, { test: 1 }, { override: true });
+    await pluginManager.init();
+  });
+
+  it('插件增加 override 参数时可以重复注册, 被覆盖的如果已初始化，会被销毁', async () => {
+    const mockInitFn = jest.fn();
+    const mockDestroyFn = jest.fn();
+    const mockPlugin = (ctx: ILowCodePluginContext, options: any) => {
+      return {
+        name: 'demoOverride',
+        init: mockInitFn,
+        destroy: mockDestroyFn,
+      };
+    };
+    await pluginManager.register(mockPlugin, { test: 1 }, { autoInit: true });
+    expect(mockInitFn).toHaveBeenCalledTimes(1);
+    await pluginManager.register(mockPlugin, { test: 1 }, { override: true });
+    expect(mockDestroyFn).toHaveBeenCalledTimes(1);
+    await pluginManager.init();
+  });
+
   it('内部事件机制', async () => {
     const mockFn = jest.fn();
     pluginManager.register((ctx: ILowCodePluginContext, options: any) => {