Requester Pays: Download an object

  namespace 
  
 gcs 
  
 = 
  
 :: 
 google 
 :: 
 cloud 
 :: 
 storage 
 ; 
 []( 
 gcs 
 :: 
 Client 
  
 client 
 , 
  
 std 
 :: 
 string 
  
 const 
&  
 bucket_name 
 , 
  
 std 
 :: 
 string 
  
 const 
&  
 object_name 
 , 
  
 std 
 :: 
 string 
  
 const 
&  
 billed_project 
 ) 
  
 { 
  
 gcs 
 :: 
 ObjectReadStream 
  
 stream 
  
 = 
  
 client 
 . 
 ReadObject 
 ( 
  
 bucket_name 
 , 
  
 object_name 
 , 
  
 gcs 
 :: 
 UserProject 
 ( 
 billed_project 
 )); 
  
 std 
 :: 
 string 
  
 line 
 ; 
  
 while 
  
 ( 
 std 
 :: 
 getline 
 ( 
 stream 
 , 
  
 line 
 , 
  
 '\n' 
 )) 
  
 { 
  
 std 
 :: 
 cout 
 << 
 line 
 << 
 " 
 \n 
 " 
 ; 
  
 } 
  
 if 
  
 ( 
 stream 
 . 
 bad 
 ()) 
  
 throw 
  
 google 
 :: 
 cloud 
 :: 
 Status 
 ( 
 stream 
 . 
 status 
 ()); 
 } 
 

  using 
  
  Google.Cloud.Storage.V1 
 
 ; 
 using 
  
 System 
 ; 
 using 
  
 System.IO 
 ; 
 public 
  
 class 
  
 DownloadFileRequesterPaysSample 
 { 
  
 public 
  
 void 
  
 DownloadFileRequesterPays 
 ( 
  
 string 
  
 projectId 
  
 = 
  
 "your-project-id" 
 , 
  
 string 
  
 bucketName 
  
 = 
  
 "your-unique-bucket-name" 
 , 
  
 string 
  
 objectName 
  
 = 
  
 "my-file-name" 
 , 
  
 string 
  
 localPath 
  
 = 
  
 "my-local-path/my-file-name" 
 ) 
  
 { 
  
 var 
  
 storage 
  
 = 
  
  StorageClient 
 
 . 
  Create 
 
 (); 
  
 using 
  
 var 
  
 outputFile 
  
 = 
  
 File 
 . 
 OpenWrite 
 ( 
 localPath 
 ); 
  
 storage 
 . 
 DownloadObject 
 ( 
 bucketName 
 , 
  
 objectName 
 , 
  
 outputFile 
 , 
  
 new 
  
  DownloadObjectOptions 
 
  
 { 
  
 UserProject 
  
 = 
  
 projectId 
  
 }); 
  
 Console 
 . 
 WriteLine 
 ( 
 $"Downloaded {objectName} to {localPath} paid by {projectId}." 
 ); 
  
 } 
 } 
 

  import 
  
 ( 
  
 "context" 
  
 "fmt" 
  
 "io" 
  
 "os" 
  
 "time" 
  
 "cloud.google.com/go/storage" 
 ) 
 // downloadUsingRequesterPays downloads an object using billing project. 
 func 
  
 downloadUsingRequesterPays 
 ( 
 w 
  
 io 
 . 
  Writer 
 
 , 
  
 bucket 
 , 
  
 object 
 , 
  
 billingProjectID 
  
 string 
 ) 
  
 error 
  
 { 
  
 // bucket := "bucket-name" 
  
 // object := "object-name" 
  
 // billingProjectID := "billing_account_id" 
  
 ctx 
  
 := 
  
 context 
 . 
 Background 
 () 
  
 client 
 , 
  
 err 
  
 := 
  
 storage 
 . 
 NewClient 
 ( 
 ctx 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "storage.NewClient: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 defer 
  
 client 
 . 
 Close 
 () 
  
 b 
  
 := 
  
 client 
 . 
  Bucket 
 
 ( 
 bucket 
 ). 
  UserProject 
 
 ( 
 billingProjectID 
 ) 
  
 src 
  
 := 
  
 b 
 . 
  Object 
 
 ( 
 object 
 ) 
  
 // Open local file. 
  
 f 
 , 
  
 err 
  
 := 
  
 os 
 . 
 OpenFile 
 ( 
 "notes.txt" 
 , 
  
 os 
 . 
 O_RDWR 
 | 
 os 
 . 
 O_CREATE 
 , 
  
 0755 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "os.OpenFile: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 ctx 
 , 
  
 cancel 
  
 := 
  
 context 
 . 
 WithTimeout 
 ( 
 ctx 
 , 
  
 time 
 . 
 Second 
 * 
 50 
 ) 
  
 defer 
  
 cancel 
 () 
  
 rc 
 , 
  
 err 
  
 := 
  
 src 
 . 
  NewReader 
 
 ( 
 ctx 
 ) 
  
 if 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "Object(%q).NewReader: %w" 
 , 
  
 object 
 , 
  
 err 
 ) 
  
 } 
  
 if 
  
 _ 
 , 
  
 err 
  
 := 
  
 io 
 . 
 Copy 
 ( 
 f 
 , 
  
 rc 
 ); 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "io.Copy: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 if 
  
 err 
  
 := 
  
 rc 
 . 
 Close 
 (); 
  
 err 
  
 != 
  
 nil 
  
 { 
  
 return 
  
 fmt 
 . 
 Errorf 
 ( 
 "Reader.Close: %w" 
 , 
  
 err 
 ) 
  
 } 
  
 fmt 
 . 
 Fprintf 
 ( 
 w 
 , 
  
 "Downloaded using %v as billing project.\n" 
 , 
  
 billingProjectID 
 ) 
  
 return 
  
 nil 
 } 
 

  import 
  
 com.google.cloud.storage. Blob 
 
 ; 
 import 
  
 com.google.cloud.storage. BlobId 
 
 ; 
 import 
  
 com.google.cloud.storage. Storage 
 
 ; 
 import 
  
 com.google.cloud.storage. StorageOptions 
 
 ; 
 import 
  
 java.nio.file.Path 
 ; 
 public 
  
 class 
 DownloadRequesterPaysObject 
  
 { 
  
 public 
  
 static 
  
 void 
  
 downloadRequesterPaysObject 
 ( 
  
 String 
  
 projectId 
 , 
  
 String 
  
 bucketName 
 , 
  
 String 
  
 objectName 
 , 
  
 Path 
  
 destFilePath 
 ) 
  
 { 
  
 // The project ID to bill 
  
 // String projectId = "my-billable-project-id"; 
  
 // The ID of your GCS bucket 
  
 // String bucketName = "your-unique-bucket-name"; 
  
 // The ID of your GCS object 
  
 // String objectName = "your-object-name"; 
  
 // The path to which the file should be downloaded 
  
 // Path destFilePath = Paths.get("/local/path/to/file.txt"); 
  
  Storage 
 
  
 storage 
  
 = 
  
  StorageOptions 
 
 . 
 getDefaultInstance 
 (). 
  getService 
 
 (); 
  
  Blob 
 
  
 blob 
  
 = 
  
 storage 
 . 
  get 
 
 ( 
  
 BlobId 
 . 
 of 
 ( 
 bucketName 
 , 
  
 objectName 
 ), 
  
 Storage 
 . 
 BlobGetOption 
 . 
 userProject 
 ( 
 projectId 
 )); 
  
 blob 
 . 
  downloadTo 
 
 ( 
 destFilePath 
 , 
  
 Blob 
 . 
 BlobSourceOption 
 . 
 userProject 
 ( 
 projectId 
 )); 
  
 System 
 . 
 out 
 . 
 println 
 ( 
  
 "Object " 
  
 + 
  
 objectName 
  
 + 
  
 " downloaded to " 
  
 + 
  
 destFilePath 
  
 + 
  
 " and billed to " 
  
 + 
  
 projectId 
 ); 
  
 } 
 } 
 

  /** 
 * TODO(developer): Uncomment the following lines before running the sample. 
 */ 
 // The project ID to bill 
 // const projectId = 'my-billable-project-id'; 
 // The ID of your GCS bucket 
 // const bucketName = 'your-unique-bucket-name'; 
 // The ID of your GCS file 
 // const srcFileName = 'your-file-name'; 
 // The path to which the file should be downloaded 
 // const destFileName = '/local/path/to/file.txt'; 
 // Imports the Google Cloud client library 
 const 
  
 { 
 Storage 
 } 
  
 = 
  
 require 
 ( 
 ' @google-cloud/storage 
' 
 ); 
 // Creates a client 
 const 
  
 storage 
  
 = 
  
 new 
  
 Storage 
 (); 
 async 
  
 function 
  
 downloadFileUsingRequesterPays 
 () 
  
 { 
  
 const 
  
 options 
  
 = 
  
 { 
  
 destination 
 : 
  
 destFileName 
 , 
  
 userProject 
 : 
  
 projectId 
 , 
  
 }; 
  
 // Downloads the file 
  
 await 
  
 storage 
 . 
 bucket 
 ( 
 bucketName 
 ). 
 file 
 ( 
 srcFileName 
 ). 
  download 
 
 ( 
 options 
 ); 
  
 console 
 . 
 log 
 ( 
  
 `gs:// 
 ${ 
 bucketName 
 } 
 / 
 ${ 
 srcFileName 
 } 
 downloaded to 
 ${ 
 destFileName 
 } 
 using requester-pays requests` 
  
 ); 
 } 
 downloadFileUsingRequesterPays 
 (). 
 catch 
 ( 
 console 
 . 
 error 
 ); 
 

  use Google\Cloud\Storage\StorageClient; 
 /** 
 * Download file using specified project as requester 
 * 
 * @param string $projectId The ID of your Google Cloud Platform project. 
 *        (e.g. 'my-project-id') 
 * @param string $bucketName The name of your Cloud Storage bucket. 
 *        (e.g. 'my-bucket') 
 * @param string $objectName The name of your Cloud Storage object. 
 *        (e.g. 'my-object') 
 * @param string $destination The local destination to save the object. 
 *        (e.g. '/path/to/your/file') 
 */ 
 function download_file_requester_pays(string $projectId, string $bucketName, string $objectName, string $destination): void 
 { 
 $storage = new StorageClient([ 
 'projectId' => $projectId 
 ]); 
 $userProject = true; 
 $bucket = $storage->bucket($bucketName, $userProject); 
 $object = $bucket->object($objectName); 
 $object->downloadToFile($destination); 
 printf('Downloaded gs://%s/%s to %s using requester-pays requests.' . PHP_EOL, 
 $bucketName, $objectName, basename($destination)); 
 } 
 

  from 
  
 google.cloud 
  
 import 
  storage 
 
 def 
  
 download_file_requester_pays 
 ( 
 bucket_name 
 , 
 project_id 
 , 
 source_blob_name 
 , 
 destination_file_name 
 ): 
  
 """Download file using specified project as the requester""" 
 # bucket_name = "your-bucket-name" 
 # project_id = "your-project-id" 
 # source_blob_name = "source-blob-name" 
 # destination_file_name = "local-destination-file-name" 
 storage_client 
 = 
  storage 
 
 . 
  Client 
 
 () 
 bucket 
 = 
 storage_client 
 . 
  bucket 
 
 ( 
 bucket_name 
 , 
 user_project 
 = 
 project_id 
 ) 
 blob 
 = 
 bucket 
 . 
 blob 
 ( 
 source_blob_name 
 ) 
 blob 
 . 
  download_to_filename 
 
 ( 
 destination_file_name 
 ) 
 print 
 ( 
 "Blob 
 {} 
 downloaded to 
 {} 
 using a requester-pays request." 
 . 
 format 
 ( 
 source_blob_name 
 , 
 destination_file_name 
 ) 
 ) 
 

  def 
  
 download_file_requester_pays 
  
 bucket_name 
 :, 
  
 file_name 
 :, 
  
 local_file_path 
 : 
  
 # The ID of a GCS bucket 
  
 # bucket_name = "your-unique-bucket-name" 
  
 # The ID of a GCS object 
  
 # file_name = "your-file-name" 
  
 # The path to which the file should be downloaded 
  
 # local_file_path = "/local/path/to/file.txt" 
  
 require 
  
 "google/cloud/storage" 
  
 storage 
  
 = 
  
 Google 
 :: 
 Cloud 
 :: 
  Storage 
 
 . 
  new 
 
  
 bucket 
  
 = 
  
 storage 
 . 
 bucket 
  
 bucket_name 
 , 
  
 skip_lookup 
 : 
  
 true 
 , 
  
 user_project 
 : 
  
 true 
  
 file 
  
 = 
  
 bucket 
 . 
  file 
 
  
 file_name 
  
 file 
 . 
  download 
 
  
 local_file_path 
  
 puts 
  
 "Downloaded 
 #{ 
 file 
 . 
 name 
 } 
 using billing project 
 #{ 
 storage 
 . 
  project 
 
 } 
 " 
 end