Represents the field value constraint to constrain specified field value based on defined sanity checks. Example - For DNS.upstream_servers, all the IP addresses must either be public or private. { “target”: { “target_resource_type”: “DnsForwarderZone”, “attribute”: “upstreamServers”, “path_prefix”: “/infra/dns-forwarder-zones/” }, “constraint_expression”: { “resource_type”: “FieldSanityConstraintExpression”, “operator”: “OR”, “checks”: [“ALL_PUBLIC_IPS”, “ALL_PRIVATE_IPS”] } }


Required Property Name Type Description
optional _create_time integer

Timestamp of resource creation

optional _create_user string

ID of the user who created this resource

optional _last_modified_time integer

Timestamp of last modification

optional _last_modified_user string

ID of the user who last modified this resource

optional _links array of ResourceLink

The server will populate this field when returing the resource. Ignored on PUT and POST.

optional _protection string

Protection status is one of the following: PROTECTED - the client who retrieved the entity is not allowed to modify it. NOT_PROTECTED - the client who retrieved the entity is allowed to modify it REQUIRE_OVERRIDE - the client who retrieved the entity is a super user and can modify it, but only when providing the request header X-Allow-Overwrite=true. UNKNOWN - the _protection field could not be determined for this entity.

optional _revision integer

The _revision property describes the current revision of the resource. To prevent clients from overwriting each other’s changes, PUT operations must include the current _revision of the resource, which clients should obtain by issuing a GET operation. If the _revision provided in a PUT request is missing or stale, the operation will be rejected.

optional _schema string

Schema for this resource

optional _self SelfResourceLink

Link to this resource

optional _system_owned boolean

Indicates system owned resource

optional checks array of string

List of sanity checks.

optional description string

Description of this resource

optional display_name string

Defaults to ID if not set

optional id string

Unique identifier of this resource

optional operator string

A conditional operator

optional resource_type string

The type of this resource.

optional tags array of Tag

Opaque identifiers meaningful to the API user

JSON Example

    "_create_time": 0,
    "_create_user": "string",
    "_last_modified_time": 0,
    "_last_modified_user": "string",
    "_links": [
            "action": "string",
            "href": "string",
            "rel": "string"
    "_protection": "string",
    "_revision": 0,
    "_schema": "string",
    "_self": {
        "action": "string",
        "href": "string",
        "rel": "string"
    "_system_owned": false,
    "checks": [
    "description": "string",
    "display_name": "string",
    "id": "string",
    "operator": "string",
    "resource_type": "string",
    "tags": [
            "scope": "string",
            "tag": "string"

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