RAM authorization - Simple Message Queue (formerly MNS) - Alibaba Cloud Documentation Center

Resource Access Management (RAM) is a service provided by Alibaba Cloud to manage user identities and resource access permissions. Using RAM helps you avoid sharing your Alibaba Cloud account keys with other users and allows you to grant users the least privilege access. RAM uses permission policies to define authorizations. This topic describes the general structure of a RAM policy, and the policy statement elements (Action, Resource, and Condition) defined by Simple Message Queue (formerly MNS) for RAM permission policies. The RAM code (RamCode) for Simple Message Queue (formerly MNS) is mns , and the supported authorization granularity is RESOURCE .

General structure of a policy

Permission policies support JSON format with the following general structure:

{
  "Version": "1",
  "Statement": [
    {
      "Effect": "<Effect>",
      "Action": "<Action>",
      "Resource": "<Resource>",
      "Condition": {
        "<Condition_operator>": {
          "<Condition_key>": [
            "<Condition_value>"
          ]
        }
      }
    }
  ]
}

The following list describes the fields in the policy:

Version: Specifies the policy version number. It is fixed at 1.
Statement:
- Effect: Specifies the authorization result. Valid values: Allow and Deny.
- Action: Specifies one or more operations that are allowed or denied.
- Resource: Specifies the specific objects affected by the operations. You can use Alibaba Cloud Resource Names (ARNs) to describe specific resources.
- Condition: Specifies the conditions for the authorization to take effect. This field is optional.
  - Condition operator: Specifies the conditional operators. Different types of conditions support different conditional operators.
  - Condition_key: Specifies the condition keys.
  - Condition_value: Specifies the condition values.

Action

The following table lists the actions defined by Simple Message Queue (formerly MNS). The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that support authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding ARN in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys that are applicable across all RAM-integrated services. For more information, see Common condition keys.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action	API	Access level	Resource type	Condition key	Dependent action
mns:GetConsumeTrace	GetConsumeTrace	get	All Resource ``	None	None
mns:SetTopicAttributes	SetTopicAttributes	update	*Topic `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}`	mns:EnableLogging	None
mns:RevokeEndpointAcl	RevokeEndpointAcl	none	All Resource ``	None	None
mns:PurgeQueue	PurgeQueue	update	All Resource ``	None	None
mns:ListQueue	GetResourceCount	get	All Resource ``	None	None
mns:TagResources	TagResources	create	Topic `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}` Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	None	None
mns:SetQueueAttributes	SetQueueAttributes	update	*Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	mns:EnableLogging	None
mns:ListQueue	ListResource	list	All Resource ``	None	None
mns:ResetQueueOffset	ResetQueueOffset	update	All Resource ``	None	None
mns:ResetSubscriptionOffset	ResetSubscriptionOffset	update	All Resource ``	None	None
mns:GetTopicAttributes	GetTopicAttributes	get	*Topic `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}`	None	None
mns:ListQueue	ListQueue	list	All Resource ``	None	None
mns:Subscribe	Subscribe	update	*Subscription `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName}`	mns:PushType	None
mns:GetEndpointAttribute	GetEndpointAttribute	none	All Resource ``	None	None
mns:GetQueueAttributes	GetQueueAttributes	get	*Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	None	None
mns:GetSubscriptionDlqPolicy	GetSubscriptionDlqPolicy	get	*Subscription `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName}`	None	None
mns:ListEventRules	ListEventRules	list	*Topic `acs:mns:{#regionId}:{#accountId}:/products/{#ProductName}/rules`	None	None
mns:ListTagResources	ListTagResources	list	All Resource ``	None	None
mns:GetEventRule	GetEventRule	get	*Topic `acs:mns:{#regionId}:{#accountId}:/products/{#ProductName}/rules`	None	None
mns:SetQueueDlqPolicy	SetQueueDlqPolicy	update	*Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	None	None
mns:CreateQueue	CreateQueue	create	*Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	mns:EnableLogging	None
mns:ListSubscriptionByTopic	ListSubscriptionByTopic	list	*Subscription `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions`	None	None
mns:CreateTopic	CreateTopic	create	*Topic `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}`	mns:EnableLogging	None
mns:GetSendTrace	GetSendTrace	get	All Resource ``	None	None
mns:DisableEndpoint	DisableEndpoint	none	All Resource ``	None	None
mns:GetSubscriptionTrace	GetSubscriptionTrace	get	All Resource ``	None	None
mns:GetAccountAttributes	GetAccountAttributes	get	All Resource ``	None	None
mns:DeleteTopic	DeleteTopic	delete	*Topic `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}`	None	None
mns:GetSubscriptionAttributes	GetSubscriptionAttributes	get	*Subscription `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName}`	None	None
mns:UntagResources	UntagResources	delete	Topic `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}` Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	None	None
mns:GetPushTrace	GetPushTrace	get	All Resource ``	None	None
mns:SetSubscriptionDlqPolicy	SetSubscriptionDlqPolicy	update	*Subscription `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName}`	None	None
mns:EnableEndpoint	EnableEndpoint	none	All Resource ``	None	None
mns:SetAccountAttributes	SetAccountAttributes	update	All Resource ``	None	None
mns:SetSubscriptionAttributes	SetSubscriptionAttributes	update	*Subscription `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName}`	None	None
mns:ListMessageTraces	ListMessageTraces	list	All Resource ``	None	None
mns:ListTopic	ListTopic	list	All Resource ``	None	None
mns:DeleteQueue	DeleteQueue	delete	*Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	None	None
mns:AuthorizeEndpointAcl	AuthorizeEndpointAcl	none	All Resource ``	None	None
mns:DeleteEventNotifications	DeleteEventRule	delete	All Resource ``	None	None
mns:PutEventNotifications	CreateEventRule	create	All Resource ``	None	None
mns:Unsubscribe	Unsubscribe	update	*Subscription `acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName}`	None	None
mns:GetQueueDlqPolicy	GetQueueDlqPolicy	get	*Queue `acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName}`	None	None

Resource

The following table lists the resources defined by Simple Message Queue (formerly MNS). Specify them in the Resource element of RAM policy statements to grant permissions for specific operations. They are uniquely identified by ARNs. Format: acs:{#ramcode}:{#regionId}:{#accountId}:{#resourceType}:

acs: The initialism of Alibaba Cloud service, which indicates the public cloud of Alibaba Cloud.
{#ramcode}: The code used in RAM to indicate an Alibaba Cloud service.
{#regionId}: The region ID. If the resource covers all regions, set it to an asterisk (*).
{#accountId}: The ID of the Alibaba Cloud account. If the resource covers all Alibaba Cloud accounts, set it to an asterisk (*).
{#resourceType}: The service-defined resource identifier. It supports a hierarchical structure, which is similar to a file path. If the statement covers global resources, set it to an asterisk (*).

Resource type	ARN
Topic	acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName} acs:messageservice:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName} acs:mns:{#regionId}:{#accountId}:/products/{#ProductName}/rules acs:mns:{#regionId}:{#accountId}:/topics acs:messageservice:{#regionId}:{#accountId}:/products/{#ProductName}/rules
Queue	acs:mns:{#regionId}:{#accountId}:/queues acs:mns:{#regionId}:{#accountId}:/queues/{#QueueName} acs:messageservice:{#regionId}:{#accountId}:/queues/{#QueueName}
Subscription	acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions/{#SubscriptionName} acs:mns:{#regionId}:{#accountId}:/topics/{#TopicName}/subscriptions

Condition

The following table lists the product-level condition keys defined by Simple Message Queue (formerly MNS). You can also use Alibaba Cloud's Common condition keys. Specify these keys in the Condition element of RAM policy statements to define granular authorization rules. In the condition key, specify the condition values in the Condition_value element of the policy.

Each condition key has a specific data type, such as string, number, Boolean, or IP address. The data type determines which conditional operators can be used to compare the request values against policy values. You must specify the conditional operators compatible with the data type of the condition key. Mismatched operators will invalidate the policy. See Condition operator for valid combinations.

Condition key	Description	Data type
mns:EnableLogging	Whether the log function is enabled	String
mns:PushType	Subscription Type	String

How to create custom RAM policies?

You can create custom policies and grant them to RAM users, RAM user groups, or RAM roles. For instructions, see: