Lists every predefined  Role 
 
that IAM supports, or every custom role that is defined for an organization or project.
HTTP request
 GET https://iam.googleapis.com/v1/roles 
The URL uses gRPC Transcoding syntax.
Query parameters
parent 
 string 
The parent 
parameter's value depends on the target resource for the request, namely roles 
, projects 
, or organizations 
. Each resource type's parent 
value format is described below:
-  roles.list : An empty string. This method doesn't require a resource; it simply returns all predefined roles in IAM. Example request URL: https://iam.googleapis.com/v1/roles
-  projects.roles.list : projects/{PROJECT_ID}. This method lists all project-level custom roles . Example request URL:https://iam.googleapis.com/v1/projects/{PROJECT_ID}/roles
-  organizations.roles.list : organizations/{ORGANIZATION_ID}. This method lists all organization-level custom roles . Example request URL:https://iam.googleapis.com/v1/organizations/{ORGANIZATION_ID}/roles
Note: Wildcard (*) values are invalid; you must specify a complete project ID or organization ID.
Authorization requires the following IAM 
permission on the specified resource parent 
:
-  iam.roles.list
pageSize 
 integer 
Optional limit on the number of roles to include in the response.
The default is 300, and the maximum is 1,000.
pageToken 
 string 
Optional pagination token returned in an earlier ListRolesResponse.
view 
 enum (  
 RoleView 
 
)
Optional view for the returned Role objects. When FULL 
is specified, the includedPermissions 
field is returned, which includes a list of all permissions in the role. The default value is BASIC 
, which does not return the includedPermissions 
field.
showDeleted 
 boolean 
Include Roles that have been deleted.
Request body
The request body must be empty.
Response body
If successful, the response body contains an instance of  ListRolesResponse 
 
.
Authorization scopes
Requires one of the following OAuth scopes:
-  https://www.googleapis.com/auth/iam
-  https://www.googleapis.com/auth/cloud-platform
For more information, see the Authentication Overview .

