feat: GenAI - Added the response_schema parameter to the `Generatio…

…nConfig` class

PiperOrigin-RevId: 637930285

tests/system/vertexai/test_generative_models.py

@@ -70,6 +70,16 @@ def get_current_weather(location: str, unit: str = "centigrade"):
     "required": ["location"],
 }
 
+_RESPONSE_SCHEMA_STRUCT = {
+    "type": "object",
+    "properties": {
+        "location": {
+            "type": "string",
+        },
+    },
+    "required": ["location"],
+}
+
 
 class TestGenerativeModels(e2e_base.TestEndToEnd):
     """System tests for generative models."""
@@ -174,6 +184,7 @@ def test_generate_content_with_gemini_15_parameters(self):
                 presence_penalty=0.0,
                 frequency_penalty=0.0,
                 response_mime_type="application/json",
+                response_schema=_RESPONSE_SCHEMA_STRUCT,
             ),
             safety_settings={
                 generative_models.HarmCategory.HARM_CATEGORY_HATE_SPEECH: generative_models.HarmBlockThreshold.BLOCK_MEDIUM_AND_ABOVE,

vertexai/generative_models/_generative_models.py

@@ -1194,6 +1194,7 @@ def __init__(
         presence_penalty: Optional[float] = None,
         frequency_penalty: Optional[float] = None,
         response_mime_type: Optional[str] = None,
+        response_schema: Optional[Dict[str, Any]] = None,
     ):
         r"""Constructs a GenerationConfig object.
 
@@ -1216,6 +1217,8 @@ def __init__(
 
                 The model needs to be prompted to output the appropriate
                 response type, otherwise the behavior is undefined.
+            response_schema: Output response schema of the genreated candidate text. Only valid when
+                response_mime_type is application/json.
 
         Usage:
             ```
@@ -1232,6 +1235,11 @@ def __init__(
             )
             ```
         """
+        if response_schema is None:
+            raw_schema = None
+        else:
+            gapic_schema_dict = _convert_schema_dict_to_gapic(response_schema)
+            raw_schema = aiplatform_types.Schema(gapic_schema_dict)
         self._raw_generation_config = gapic_content_types.GenerationConfig(
             temperature=temperature,
             top_p=top_p,
@@ -1242,6 +1250,7 @@ def __init__(
             presence_penalty=presence_penalty,
             frequency_penalty=frequency_penalty,
             response_mime_type=response_mime_type,
+            response_schema=raw_schema,
         )
 
     @classmethod