[Evals API][5/n] fixes to generate openapi spec (#323)

* generate openapi

* typing comment, dataset -> dataset_id

llama_stack/apis/common/type_system.py

@@ -4,7 +4,7 @@
 # This source code is licensed under the terms described in the LICENSE file in
 # the root directory of this source tree.
 
-from typing import Dict, List, Literal, Union
+from typing import Literal, Union
 
 from pydantic import BaseModel, Field
 from typing_extensions import Annotated
@@ -24,12 +24,10 @@ class BooleanType(BaseModel):
 
 class ArrayType(BaseModel):
     type: Literal["array"] = "array"
-    items: "ParamType"
 
 
 class ObjectType(BaseModel):
     type: Literal["object"] = "object"
-    properties: Dict[str, "ParamType"] = Field(default_factory=dict)
 
 
 class JsonType(BaseModel):
@@ -38,12 +36,6 @@ class JsonType(BaseModel):
 
 class UnionType(BaseModel):
     type: Literal["union"] = "union"
-    options: List["ParamType"] = Field(default_factory=list)
-
-
-class CustomType(BaseModel):
-    type: Literal["custom"] = "custom"
-    validator_class: str
 
 
 class ChatCompletionInputType(BaseModel):
@@ -78,6 +70,15 @@ ParamType = Annotated[
     Field(discriminator="type"),
 ]
 
-ArrayType.model_rebuild()
-ObjectType.model_rebuild()
-UnionType.model_rebuild()
+# TODO: recursive definition of ParamType in these containers
+# will cause infinite recursion in OpenAPI generation script
+# since we are going with ChatCompletionInputType and CompletionInputType
+# we don't need to worry about ArrayType/ObjectType/UnionType for now
+# ArrayType.model_rebuild()
+# ObjectType.model_rebuild()
+# UnionType.model_rebuild()
+
+
+# class CustomType(BaseModel):
+#     type: Literal["custom"] = "custom"
+#     validator_class: str