feat: add optional location parameter to text2vec-google vectorizer

src/collections/config/types/vectorizer.ts

@@ -586,6 +586,8 @@ export type Text2VecGoogleConfig = {
   apiEndpoint?: string;
   /** The dimensionality of the vector once embedded. */
   dimensions?: number;
+  /** The location where the model runs, i.e. the Google Vertex AI region. */
+  location?: string;
   /** The model ID to use. */
   model?: string;
   /** The model ID to use.

src/collections/configure/unit.test.ts

@@ -1367,6 +1367,7 @@ describe('Unit testing of the vectorizer factory class', () => {
     const config = configure.vectors.text2VecGoogle({
       name: 'test',
       apiEndpoint: 'api-endpoint',
+      location: 'us-central1',
       model: 'model-id',
       projectId: 'project-id',
     });
@@ -1376,6 +1377,7 @@ describe('Unit testing of the vectorizer factory class', () => {
         name: 'text2vec-google',
         config: {
           apiEndpoint: 'api-endpoint',
+          location: 'us-central1',
           model: 'model-id',
           modelId: 'model-id',
           projectId: 'project-id',
@@ -1384,6 +1386,33 @@ describe('Unit testing of the vectorizer factory class', () => {
     });
   });
 
+  it('should serialize text2vec-google `location` when set and omit it when unset', () => {
+    // location set → present in serialized config (Google Vertex AI region)
+    const withLocation = configure.vectors.text2VecGoogle({ location: 'us-central1' });
+    expect(withLocation).toEqual<VectorConfigCreate<never, undefined, 'hnsw', 'text2vec-google'>>({
+      name: undefined,
+      vectorizer: {
+        name: 'text2vec-google',
+        config: {
+          location: 'us-central1',
+        },
+      },
+    });
+
+    // location unset → no client-side default; key absent from serialized config (server applies its default)
+    const withoutLocation = configure.vectors.text2VecGoogle({ projectId: 'project-id' });
+    expect(withoutLocation).toEqual<VectorConfigCreate<never, undefined, 'hnsw', 'text2vec-google'>>({
+      name: undefined,
+      vectorizer: {
+        name: 'text2vec-google',
+        config: {
+          projectId: 'project-id',
+        },
+      },
+    });
+    expect((withoutLocation.vectorizer.config as Record<string, unknown>).location).toBeUndefined();
+  });
+
   it('should create the correct Text2VecGoogleGeminiConfig type with defaults', () => {
     const config = configure.vectors.text2VecGoogleGemini();
     expect(config).toEqual<VectorConfigCreate<never, undefined, 'hnsw', 'text2vec-google'>>({