feat(genai): tools vais sample (#4162)

* adding samples, test, lints

* adding samples, test, lints

* adding samples, test, lints

---------

Co-authored-by: Guiners <[email protected]>
Co-authored-by: Sampath Kumar <[email protected]>
Co-authored-by: Eric Dong <[email protected]>

Author: 4 people

genai/test/tools-vais-with-txt.test.js

@@ -0,0 +1,32 @@
+// Copyright 2025 Google LLC
+//
+// 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
+//
+//     https://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.
+
+'use strict';
+
+const {assert} = require('chai');
+const {describe, it} = require('mocha');
+
+const projectId = process.env.CAIP_PROJECT_ID;
+const sample = require('../tools/tools-vais-with-txt.js');
+const location = process.env.GOOGLE_CLOUD_LOCATION || 'global';
+const datastore = `projects/${projectId}/locations/global/collections/default_collection/dataStores/grounding-test-datastore`;
+
+describe('tools-vais-with-txt', () => {
+  it('should generate a function call', async function () {
+    this.timeout(60000);
+    const output = await sample.generateContent(datastore, projectId, location);
+    assert(output.length > 0);
+  });
+});
+6;

genai/tools/tools-vais-with-txt.js

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+// Copyright 2025 Google LLC
+//
+// 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
+//
+//     https://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.
+
+'use strict';
+
+// [START googlegenaisdk_tools_vais_with_txt]
+const {GoogleGenAI} = require('@google/genai');
+
+const GOOGLE_CLOUD_PROJECT = process.env.GOOGLE_CLOUD_PROJECT;
+const GOOGLE_CLOUD_LOCATION = process.env.GOOGLE_CLOUD_LOCATION || 'global';
+// (Developer) put your path Data Store
+const DATASTORE =
+  'projects/cloud-ai-devrel-softserve/locations/global/collections/default_collection/dataStores/example-adk-website-datastore_1755611010401';
+
+async function generateContent(
+  datastore = DATASTORE,
+  projectId = GOOGLE_CLOUD_PROJECT,
+  location = GOOGLE_CLOUD_LOCATION
+) {
+  const client = new GoogleGenAI({
+    vertexai: true,
+    project: projectId,
+    location: location,
+    httpOptions: {
+      apiVersion: 'v1',
+    },
+  });
+
+  const response = await client.models.generateContent({
+    model: 'gemini-2.5-flash',
+    contents: "How do I make an appointment to renew my driver's license?",
+    config: {
+      tools: [
+        {
+          retrieval: {
+            vertexAiSearch: {
+              datastore: datastore,
+            },
+          },
+        },
+      ],
+    },
+  });
+
+  console.debug(response.text);
+
+  // Example response:
+  //    'The process for making an appointment to renew your driver's license varies depending on your location. To provide you with the most accurate instructions...'
+
+  return response.text;
+}
+
+// [END googlegenaisdk_tools_vais_with_txt]
+
+module.exports = {
+  generateContent,
+};