Ports the Fossa Plugin to the new plugin model

Towards #3424

plugins/fossa/src/extensions.tsx

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020 Spotify AB
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { createComponentExtension } from '@backstage/core';
+import { useEntity } from '@backstage/plugin-catalog-react';
+import React from 'react';
+import { fossaPlugin } from './plugin';
+
+export const EntityFossaCard = fossaPlugin.provide(
+  createComponentExtension({
+    component: {
+      lazy: () =>
+        import('./components/FossaCard').then(({ FossaCard }) => {
+          const EntityFossaCard = () => {
+            const { entity } = useEntity();
+            return <FossaCard entity={entity} />;
+          };
+          return EntityFossaCard;
+        }),
+    },
+  }),
+);

plugins/fossa/src/index.ts

@@ -14,5 +14,5 @@
  * limitations under the License.
  */
 
-export { plugin } from './plugin';
-export * from './components';
+export { fossaPlugin } from './plugin';
+export { EntityFossaCard } from './extensions';

plugins/fossa/src/plugin.test.ts

@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-import { plugin } from './plugin';
+import { fossaPlugin } from './plugin';
 
 describe('fossa', () => {
   it('should export plugin', () => {
-    expect(plugin).toBeDefined();
+    expect(fossaPlugin).toBeDefined();
   });
 });

plugins/fossa/src/plugin.ts

@@ -22,7 +22,7 @@ import {
 } from '@backstage/core';
 import { fossaApiRef, FossaClient } from './api';
 
-export const plugin = createPlugin({
+export const fossaPlugin = createPlugin({
   id: 'fossa',
   apis: [
     createApiFactory({