{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "title": "jmri-json-client-message",
    "type": "object",
    "description": "Message from client to JMRI",
    "properties": {
        "type": {
            "type": "string",
            "description": "Data type if data is present, message type otherwise"
        },
        "data": {
            "type": "object",
            "description": "Data carried in message, see individual types for valid schemas"
        },
        "method": {
            "type": "string",
            "enum": ["get", "put", "post", "delete", "list"],
            "description": "HTTP Method equivalent to be performed on data; defaults to \"get\" if not specified"
        },
        "list": {
            "type": "string",
            "description": "Request for a list of the given type; only valid with \"type\" value of \"list\""
        },
        "id": {
            "type": "integer",
            "description": "A message id assigned by the client that will be attached to any messsages sent in direct response to this message; ignored if not a positive integer"
        }
    },
    "oneOf": [
        {
            "required": ["type", "data"]
        },
        {
            "required": ["type", "list"]
        },
        {
            "required": ["type"]
        }
    ]
}