[Search] Integrate putUpdateNative with Connectors API (elastic#175536)

## Summary
- Use Connectors API endpoint `_connector/{id}/_native` to update
connector `is_native` flag

packages/kbn-search-connectors/lib/update_native.test.ts

@@ -0,0 +1,67 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import { ElasticsearchClient } from '@kbn/core/server';
+
+import { errors } from '@elastic/elasticsearch';
+
+import { putUpdateNative } from './update_native';
+
+describe('putUpdateNative lib function', () => {
+  const mockClient = {
+    transport: {
+      request: jest.fn(),
+    },
+  };
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('should update connector is_native flag', async () => {
+    mockClient.transport.request.mockImplementation(() => ({ result: 'updated' }));
+
+    await expect(
+      putUpdateNative(mockClient as unknown as ElasticsearchClient, 'connectorId', true)
+    ).resolves.toEqual({ result: 'updated' });
+    expect(mockClient.transport.request).toHaveBeenCalledWith({
+      body: {
+        is_native: true,
+      },
+      method: 'PUT',
+      path: '/_connector/connectorId/_native',
+    });
+  });
+
+  it('should not index document if there is no connector', async () => {
+    mockClient.transport.request.mockImplementationOnce(() => {
+      return Promise.reject(
+        new errors.ResponseError({
+          statusCode: 404,
+          body: {
+            error: {
+              type: `document_missing_exception`,
+            },
+          },
+        } as any)
+      );
+    });
+    await expect(
+      putUpdateNative(mockClient as unknown as ElasticsearchClient, 'connectorId', true)
+    ).rejects.toEqual(
+      new errors.ResponseError({
+        statusCode: 404,
+        body: {
+          error: {
+            type: `document_missing_exception`,
+          },
+        },
+      } as any)
+    );
+  });
+});

packages/kbn-search-connectors/lib/update_native.ts

@@ -6,24 +6,21 @@
  * Side Public License, v 1.
  */
 
-import { ElasticsearchClient } from '@kbn/core-elasticsearch-server';
+import { Result } from '@elastic/elasticsearch/lib/api/types';
 
-import { CONNECTORS_INDEX } from '..';
-import { Connector, ConnectorStatus } from '../types/connectors';
+import { ElasticsearchClient } from '@kbn/core-elasticsearch-server';
 
 export const putUpdateNative = async (
   client: ElasticsearchClient,
   connectorId: string,
   isNative: boolean
 ) => {
-  const result = await client.update<Connector>({
-    doc: {
+  const result = await client.transport.request<Result>({
+    method: 'PUT',
+    path: `/_connector/${connectorId}/_native`,
+    body: {
       is_native: isNative,
-      status: ConnectorStatus.CONFIGURED,
     },
-    id: connectorId,
-    index: CONNECTORS_INDEX,
   });
-
   return result;
 };