Get the IAM policy for a reservation

  const 
  
 { 
  
 ReservationServiceClient 
 , 
 } 
  
 = 
  
 require 
 ( 
 ' @google-cloud/bigquery-reservation 
' 
 ). 
 v1 
 ; 
 const 
  
 { 
 status 
 } 
  
 = 
  
 require 
 ( 
 '@grpc/grpc-js' 
 ); 
 const 
  
 client 
  
 = 
  
 new 
  
  ReservationServiceClient 
 
 (); 
 /** 
 * Gets the IAM policy for a reservation. 
 * An IAM policy is a collection of bindings that associates one or more members, 
 * such as service accounts or users, with a single role. 
 * 
 * @param {string} projectId - Google Cloud project ID, for example "example-project-id". 
 * @param {string} location - Location of the reservation, for example "us-central1". 
 * @param {string} reservationId - ID of the reservation, for example "example-reservation". 
 */ 
 async 
  
 function 
  
 getReservationIamPolicy 
 ( 
  
 projectId 
 , 
  
 location 
  
 = 
  
 'us-central1' 
 , 
  
 reservationId 
  
 = 
  
 'example-reservation' 
 , 
 ) 
  
 { 
  
 const 
  
 resource 
  
 = 
  
 `projects/ 
 ${ 
 projectId 
 } 
 /locations/ 
 ${ 
 location 
 } 
 /reservations/ 
 ${ 
 reservationId 
 } 
 ` 
 ; 
  
 const 
  
 request 
  
 = 
  
 { 
  
 resource 
 , 
  
 }; 
  
 try 
  
 { 
  
 const 
  
 [ 
 policy 
 ] 
  
 = 
  
 await 
  
 client 
 . 
 getIamPolicy 
 ( 
 request 
 ); 
  
 console 
 . 
 log 
 ( 
 `Policy for reservation 
 ${ 
 reservationId 
 } 
 :` 
 ); 
  
 if 
  
 ( 
 policy 
 . 
 bindings 
 && 
 policy 
 . 
 bindings 
 . 
 length 
 > 
 0 
 ) 
  
 { 
  
 console 
 . 
 log 
 ( 
 JSON 
 . 
 stringify 
 ( 
 policy 
 . 
 bindings 
 , 
  
 null 
 , 
  
 2 
 )); 
  
 } 
  
 else 
  
 { 
  
 console 
 . 
 log 
 ( 
 'This reservation has no policy bindings.' 
 ); 
  
 } 
  
 } 
  
 catch 
  
 ( 
 err 
 ) 
  
 { 
  
 if 
  
 ( 
 err 
 . 
 code 
  
 === 
  
 status 
 . 
 NOT_FOUND 
 ) 
  
 { 
  
 console 
 . 
 log 
 ( 
  
 `Reservation ' 
 ${ 
 reservationId 
 } 
 ' not found in project ' 
 ${ 
 projectId 
 } 
 ' at location ' 
 ${ 
 location 
 } 
 '.` 
 , 
  
 ); 
  
 } 
  
 else 
  
 { 
  
 console 
 . 
 error 
 ( 
 'Error getting IAM policy:' 
 , 
  
 err 
 ); 
  
 } 
  
 } 
 } 
 

  from 
  
 google.api_core.exceptions 
  
 import 
 NotFound 
 from 
  
 google.cloud 
  
 import 
  bigquery_reservation_v1 
 
 client 
 = 
  bigquery_reservation_v1 
 
 . 
  ReservationServiceClient 
 
 () 
 def 
  
 get_reservation_iam_policy 
 ( 
 project_id 
 : 
 str 
 , 
 location 
 : 
 str 
 , 
 reservation_id 
 : 
 str 
 ): 
  
 """Gets the IAM policy for a reservation. 
 An IAM policy is a collection of bindings that associates one or more 
 principals with a single role. This sample demonstrates how to retrieve 
 the policy for a reservation. 
 Args: 
 project_id: The Google Cloud project ID. 
 location: The geographic location of the reservation, such as "us-central1". 
 reservation_id: The ID of the reservation to get the policy for. 
 """ 
 resource 
 = 
 client 
 . 
  reservation_path 
 
 ( 
 project_id 
 , 
 location 
 , 
 reservation_id 
 ) 
 try 
 : 
 policy 
 = 
 client 
 . 
  get_iam_policy 
 
 ( 
 resource 
 = 
 resource 
 ) 
 print 
 ( 
 f 
 "Got IAM policy for reservation: 
 { 
 resource 
 } 
 " 
 ) 
 for 
 binding 
 in 
 policy 
 . 
 bindings 
 : 
 print 
 ( 
 f 
 "  Role: 
 { 
 binding 
 . 
 role 
 } 
 " 
 ) 
 print 
 ( 
 f 
 "  Members: 
 { 
 binding 
 . 
 members 
 } 
 " 
 ) 
 except 
 NotFound 
 : 
 print 
 ( 
 f 
 "Reservation not found: 
 { 
 resource 
 } 
 " 
 )