Class Policy (2.4.0)

public sealed class Policy : Protobuf.IMessage<Policy>, Protobuf.IBufferMessage

An Identity and Access Management (IAM) policy, which specifies access controls for Google Cloud resources.

A Policy is a collection of bindings. A binding binds one or more members, or principals, to a single role. Principals can be user accounts, service accounts, Google groups, and domains (such as G Suite). A role is a named list of permissions; each role can be an IAM predefined role or a user-created custom role.

For some types of Google Cloud resources, a binding can also specify a condition, which is a logical expression that allows access to a resource only if the expression evaluates to true. A condition can add constraints based on attributes of the request, the resource, or both. To learn which resources support conditions in their IAM policies, see the IAM documentation.

JSON example:

{ "bindings": [ { "role": "roles/resourcemanager.organizationAdmin", "members": [ "user:mike@example.com", "group:admins@example.com", "domain:google.com", "serviceAccount:my-project-id@appspot.gserviceaccount.com" ] }, { "role": "roles/resourcemanager.organizationViewer", "members": [ "user:eve@example.com" ], "condition": { "title": "expirable access", "description": "Does not grant access after Sep 2020", "expression": "request.time < timestamp('2020-10-01T00:00:00.000Z')", } } ], "etag": "BwWWja0YfJA=", "version": 3 }

YAML example:

bindings:

members:
- user:mike@example.com
- group:admins@example.com
- domain:google.com
- serviceAccount:my-project-id@appspot.gserviceaccount.com role: roles/resourcemanager.organizationAdmin
members:
- user:eve@example.com role: roles/resourcemanager.organizationViewer condition: title: expirable access description: Does not grant access after Sep 2020 expression: request.time < timestamp('2020-10-01T00:00:00.000Z') etag: BwWWja0YfJA= version: 3

For a description of IAM and its features, see the IAM documentation.

Inheritance

Object > Policy

Implements

Protobuf.IBufferMessage

Namespace

Google.Cloud.Iam.V1

Assembly

Google.Cloud.Iam.V1.dll

Constructors

Policy()

public Policy()

Policy(Policy)

public Policy(Policy other)

Parameter
Name	Description
`other`	`Policy`

Properties

AuditConfigs

public Protobuf.Collections.RepeatedField<AuditConfig> AuditConfigs { get; }

Specifies cloud audit logging configuration for this policy.

Property Value
Type	Description
`Protobuf.Collections.RepeatedField<AuditConfig>`

Bindings

public Protobuf.Collections.RepeatedField<Binding> Bindings { get; }

Associates a list of members, or principals, with a role. Optionally, may specify a condition that determines how and when the bindings are applied. Each of the bindings must contain at least one principal.

The bindings in a Policy can refer to up to 1,500 principals; up to 250 of these principals can be Google groups. Each occurrence of a principal counts towards these limits. For example, if the bindings grant 50 different roles to user:alice@example.com, and not to any other principal, then you can add another 1,450 principals to the bindings in the Policy.

Property Value
Type	Description
`Protobuf.Collections.RepeatedField<Binding>`

Etag

public Protobuf.ByteString Etag { get; set; }

etag is used for optimistic concurrency control as a way to help prevent simultaneous updates of a policy from overwriting each other. It is strongly suggested that systems make use of the etag in the read-modify-write cycle to perform policy updates in order to avoid race conditions: An etag is returned in the response to getIamPolicy, and systems are expected to put that etag in the request to setIamPolicy to ensure that their change will be applied to the same version of the policy.

Important: If you use IAM Conditions, you must include the etag field whenever you call setIamPolicy. If you omit this field, then IAM allows you to overwrite a version 3 policy with a version 1 policy, and all of the conditions in the version 3 policy are lost.

Property Value
Type	Description
`Protobuf.ByteString`

Version

public int Version { get; set; }

Specifies the format of the policy.

Valid values are 0, 1, and 3. Requests that specify an invalid value are rejected.

Any operation that affects conditional role bindings must specify version 3. This requirement applies to the following operations:

Getting a policy that includes a conditional role binding
Adding a conditional role binding to a policy
Changing a conditional role binding in a policy
Removing any role binding, with or without a condition, from a policy that includes conditions

If a policy does not include any conditions, operations on that policy may specify any valid version or leave the field unset.

To learn which resources support conditions in their IAM policies, see the IAM documentation.

Property Value
Type	Description
`Int32`

Methods

AddRoleMember(String, String)

public bool AddRoleMember(string role, string member)

Adds the specified member to the specified role. If the role does not already exist, it is created. This method will fail with an if it is called on a Policy with a Version greater than 1, or if any of the bindings contain conditions, as that indicates a more complicated policy than this method is prepared to handle. Changes to such policies must be made manually.

Parameters
Name	Description
`role`	`String` The role to add the member to. Must not be null or empty.
`member`	`String` The member to add to the role. Must not be null or empty.

Returns
Type	Description
`Boolean`	`true` if the policy was changed; `false` if the member already existed in the role.

RemoveRoleMember(String, String)

public bool RemoveRoleMember(string role, string member)

Removes the specified member to the specified role, if they belong to it. If the role becomes empty after removing the member, it is removed from the policy. This method will fail with an if it is called on a Policy with a Version greater than 1, or if any of the bindings contain conditions, as that indicates a more complicated policy than this method is prepared to handle. Changes to such policies must be made manually.

Parameters
Name	Description
`role`	`String` The role to remove the member from. Must not be null or empty.
`member`	`String` The member to remove from the role. Must not be null or empty.

Returns
Type	Description
`Boolean`	`true` if the policy was changed; `false` if the member didn't exist in the role or the role didn't exist.