anthropic vertex ai support

Signed-off-by: omar <[email protected]>

Author: puertomontt

api/v1alpha1/ai_backend.go

@@ -254,10 +254,13 @@ type GeminiConfig struct {
 	ApiVersion string `json:"apiVersion"`
 }
 
-// Publisher configures the type of publisher model to use for VertexAI. Currently, only Google is supported.
+// Publisher configures the type of publisher model to use for VertexAI. Google and Anthropic are supported.
 type Publisher string
 
-const GOOGLE Publisher = "GOOGLE"
+const (
+	GOOGLE    Publisher = "GOOGLE"
+	ANTHROPIC Publisher = "ANTHROPIC"
+)
 
 // VertexAIConfig settings for the [Vertex AI](https://cloud.google.com/vertex-ai/docs) LLM provider.
 // To find the values for the project ID, project location, and publisher, you can check the fields of an API request, such as
@@ -293,8 +296,8 @@ type VertexAIConfig struct {
 	// Optional: The model path to route to. Defaults to the Gemini model path, `generateContent`.
 	ModelPath *string `json:"modelPath,omitempty"`
 
-	// The type of publisher model to use. Currently, only Google is supported.
-	// +kubebuilder:validation:Enum=GOOGLE
+	// The type of publisher model to use. Google and Anthropic are supported.
+	// +kubebuilder:validation:Enum=GOOGLE;ANTHROPIC
 	Publisher Publisher `json:"publisher"`
 }
 

install/helm/kgateway-crds/templates/gateway.kgateway.dev_backends.yaml

@@ -542,10 +542,11 @@ spec:
                             minLength: 1
                             type: string
                           publisher:
-                            description: The type of publisher model to use. Currently,
-                              only Google is supported.
+                            description: The type of publisher model to use. Google
+                              and Anthropic are supported.
                             enum:
                             - GOOGLE
+                            - ANTHROPIC
                             type: string
                         required:
                         - apiVersion
@@ -1088,9 +1089,10 @@ spec:
                                     type: string
                                   publisher:
                                     description: The type of publisher model to use.
-                                      Currently, only Google is supported.
+                                      Google and Anthropic are supported.
                                     enum:
                                     - GOOGLE
+                                    - ANTHROPIC
                                     type: string
                                 required:
                                 - apiVersion