{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://github.com/api-evangelist/kgateway/blob/main/json-schema/gateway-extension.json",
  "title": "kgateway GatewayExtension",
  "description": "GatewayExtension integrates external services with a Gateway such as external auth, rate limiting, and external processing.",
  "type": "object",
  "properties": {
    "apiVersion": {
      "type": "string",
      "const": "gateway.kgateway.dev/v1alpha1",
      "description": "API version for the GatewayExtension resource."
    },
    "kind": {
      "type": "string",
      "const": "GatewayExtension",
      "description": "Resource kind."
    },
    "metadata": {
      "type": "object",
      "description": "Standard Kubernetes object metadata.",
      "properties": {
        "name": {
          "type": "string",
          "description": "Name of the GatewayExtension resource."
        },
        "namespace": {
          "type": "string",
          "description": "Namespace of the GatewayExtension resource."
        },
        "labels": {
          "type": "object",
          "additionalProperties": { "type": "string" }
        },
        "annotations": {
          "type": "object",
          "additionalProperties": { "type": "string" }
        }
      },
      "required": ["name"]
    },
    "spec": {
      "type": "object",
      "description": "GatewayExtensionSpec defines the desired state of a GatewayExtension.",
      "properties": {
        "type": {
          "type": "string",
          "description": "Type of the gateway extension.",
          "enum": ["ExtAuth", "ExtProc", "RateLimit"]
        },
        "extAuth": {
          "type": "object",
          "description": "External auth extension configuration.",
          "properties": {
            "grpcService": {
              "$ref": "#/$defs/GrpcService"
            }
          }
        },
        "extProc": {
          "type": "object",
          "description": "External processing extension configuration.",
          "properties": {
            "grpcService": {
              "$ref": "#/$defs/GrpcService"
            }
          }
        },
        "rateLimit": {
          "type": "object",
          "description": "Rate limit extension configuration.",
          "properties": {
            "grpcService": {
              "$ref": "#/$defs/GrpcService"
            }
          }
        }
      }
    }
  },
  "$defs": {
    "GrpcService": {
      "type": "object",
      "properties": {
        "backendRef": {
          "type": "object",
          "properties": {
            "name": { "type": "string" },
            "namespace": { "type": "string" },
            "port": { "type": "integer" }
          }
        }
      }
    }
  }
}