{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/seldon/main/json-schema/seldon-deployment.json",
  "title": "SeldonDeployment",
  "description": "Schema for a SeldonDeployment Kubernetes custom resource managed via the Seldon Enterprise Platform API.",
  "type": "object",
  "properties": {
    "apiVersion": {
      "type": "string",
      "const": "machinelearning.seldon.io/v1",
      "description": "The Seldon Core API version."
    },
    "kind": {
      "type": "string",
      "const": "SeldonDeployment",
      "description": "Always SeldonDeployment."
    },
    "metadata": {
      "type": "object",
      "description": "Standard Kubernetes object metadata.",
      "properties": {
        "name": {
          "type": "string",
          "description": "The name of the deployment."
        },
        "namespace": {
          "type": "string",
          "description": "The Kubernetes namespace."
        },
        "labels": {
          "type": "object",
          "additionalProperties": { "type": "string" }
        },
        "annotations": {
          "type": "object",
          "additionalProperties": { "type": "string" }
        }
      },
      "required": ["name"]
    },
    "spec": {
      "type": "object",
      "description": "The desired state of the SeldonDeployment.",
      "properties": {
        "name": {
          "type": "string",
          "description": "The deployment name (used in the inference URL path)."
        },
        "predictors": {
          "type": "array",
          "description": "One or more predictor specifications defining model graphs.",
          "items": {
            "$ref": "#/$defs/PredictorSpec"
          },
          "minItems": 1
        },
        "annotations": {
          "type": "object",
          "additionalProperties": { "type": "string" }
        }
      },
      "required": ["predictors"]
    },
    "status": {
      "type": "object",
      "description": "The observed state of the SeldonDeployment (read-only).",
      "properties": {
        "state": {
          "type": "string",
          "enum": ["Available", "Creating", "Failed"],
          "description": "The current state of the deployment."
        },
        "description": {
          "type": "string"
        },
        "serviceUrl": {
          "type": "string",
          "description": "The external URL for the inference endpoint."
        }
      }
    }
  },
  "required": ["apiVersion", "kind", "metadata", "spec"],
  "$defs": {
    "PredictorSpec": {
      "type": "object",
      "title": "PredictorSpec",
      "description": "A predictor in the inference graph with optional traffic weight.",
      "properties": {
        "name": {
          "type": "string",
          "description": "Unique name for this predictor within the deployment."
        },
        "traffic": {
          "type": "integer",
          "minimum": 0,
          "maximum": 100,
          "description": "Percentage of traffic routed to this predictor (default 100)."
        },
        "replicas": {
          "type": "integer",
          "minimum": 1,
          "description": "Number of replicas for this predictor."
        },
        "graph": {
          "$ref": "#/$defs/PredictiveUnit"
        }
      },
      "required": ["name", "graph"]
    },
    "PredictiveUnit": {
      "type": "object",
      "title": "PredictiveUnit",
      "description": "A node in the inference graph representing a model, router, combiner, or transformer.",
      "properties": {
        "name": {
          "type": "string",
          "description": "Name of the predictive unit, matching a container name."
        },
        "type": {
          "type": "string",
          "enum": ["MODEL", "ROUTER", "COMBINER", "TRANSFORMER", "OUTPUT_TRANSFORMER"],
          "description": "The role of this unit in the inference graph."
        },
        "implementation": {
          "type": "string",
          "description": "A pre-packaged inference server implementation (e.g. SKLEARN_SERVER, TENSORFLOW_SERVER)."
        },
        "modelUri": {
          "type": "string",
          "description": "URI of the serialized model artifact (e.g. gs://, s3://, pvc://)."
        },
        "envSecretRefName": {
          "type": "string",
          "description": "Name of the Kubernetes Secret providing cloud storage credentials."
        },
        "children": {
          "type": "array",
          "items": { "$ref": "#/$defs/PredictiveUnit" },
          "description": "Child nodes in the inference pipeline."
        }
      },
      "required": ["name"]
    }
  },
  "examples": [
    {
      "apiVersion": "machinelearning.seldon.io/v1",
      "kind": "SeldonDeployment",
      "metadata": {
        "name": "iris-model",
        "namespace": "default"
      },
      "spec": {
        "name": "iris",
        "predictors": [
          {
            "name": "default",
            "traffic": 100,
            "replicas": 1,
            "graph": {
              "name": "classifier",
              "type": "MODEL",
              "implementation": "SKLEARN_SERVER",
              "modelUri": "gs://seldon-models/v1.20.0-dev/sklearn/iris"
            }
          }
        ]
      }
    }
  ]
}