db.getRole()

Definition

db.getRole(rolename, args)

Returns the roles from which this role inherits privileges. Optionally, the method can also return all the role's privileges.

Run db.getRole() from the database that contains the role. The command can retrieve information for both user-defined roles and built-in roles.

The db.getRole() method accepts the following parameters:

Parameter	Type	Description
rolename	string	The name of the role.
args	document	Optional. A document specifying additional arguments.

The args document supports the following optional fields:

Field	Type	Description
showAuthenticationRestrictions	boolean	Optional. Set this field to true to include authentication restrictions in the output. Authentication restrictions indicate the IP addresses that users with this role can connect to and from. By default, this field is false, meaning that the db.getRole() output does not include authentication restrictions.
showBuiltinRoles	boolean	Optional. Set this field to true to include built-in roles in the output. By default, this field is set to false, and the output for rolesInfo: 1 displays only user-defined roles.
showPrivileges	boolean	Optional. Set this field to true to show role privileges, including both privileges inherited from other roles and privileges defined directly. By default, the command returns only the roles from which this role inherits privileges and does not return specific privileges.

db.getRole() wraps the rolesInfo command.

Required Access

To view a role's information, you must be either explicitly granted the role or must have the viewRole action on the role's database.

Examples

The examples in this section show how to use db.getRoles to:

• Show Role Inheritance Information

• Show Role Privileges

• Show Authentication Restrictions

use products
db.getRole( "associate" )

{
  _id: 'products.associate',
  role: 'associate',
  db: 'products',
  roles: [ { role: 'readWrite', db: 'products' } ],
  inheritedRoles: [ { role: 'readWrite', db: 'products' } ],
  isBuiltin: false
}

use products
db.getRole( "associate", { showPrivileges: true } )

{
  _id: 'products.associate',
  role: 'associate',
  db: 'products',
  privileges: [
    {
      resource: { db: 'products', collection: '' },
      actions: [ 'bypassDocumentValidation' ]
    }
  ],
  roles: [ { role: 'readWrite', db: 'products' } ],
  inheritedRoles: [ { role: 'readWrite', db: 'products' } ],
  inheritedPrivileges: [
    {
      resource: { db: 'products', collection: '' },
      actions: [ 'bypassDocumentValidation' ]
    },
    {
      resource: { db: 'products', collection: '' },
      actions: [
        'changeStream',
        'collStats',
        'compactStructuredEncryptionData',
        'convertToCapped',
        'createCollection',
        'createIndex',
        'dbHash',
        'dbStats',
        'dropCollection',
        'dropIndex',
        'find',
        'insert',
        'killCursors',
        'listCollections',
        'listIndexes',
        'planCacheRead',
        'remove',
        'renameCollectionSameDB',
        'update'
      ]
    }
  ],
  isBuiltin: false
}

use products
db.getRole( "associate", { showAuthenticationRestrictions: true } )

{
  _id: 'products.associate',
  role: 'associate',
  db: 'products',
  roles: [ { role: 'readWrite', db: 'products' } ],
  authenticationRestrictions: [
    [ { clientSource: [ '198.51.100.0' ] } ]
  ],
  inheritedRoles: [ { role: 'readWrite', db: 'products' } ],
  inheritedAuthenticationRestrictions: [
    [ { clientSource: [ '198.51.100.0' ] } ]
  ],
  isBuiltin: false
}