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Manage Bucket Storage Class

See more Google Cloud Storage Examples

Demonstrates how to manage a bucket's default storage class.

See Cloud Storage Classes for information about storage classes.

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Local $bSuccess = False

;  This example requires the Chilkat API to have been previously unlocked.
;  See Global Unlock Sample for sample code.

;  This example uses a previously obtained access token having permission for the 
;  scope "https://www.googleapis.com/auth/cloud-platform"

;  In this example, Get Google Cloud Storage OAuth2 Access Token, 
;  the service account access token was saved to a text file.  This example fetches the access token from the file..
$oSbToken = ObjCreate("Chilkat.StringBuilder")
$oSbToken.LoadFile("qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8")

;  ---- Step 1
;  Create the JSON body of the PUT request that will be sent.

;  {
;    "storageClass": "[STORAGE_CLASS]"
;  }
;  

$oJson = ObjCreate("Chilkat.JsonObject")
;  Be careful if using the "regional" storage class.  See the note below about the 400 error response.
$oJson.UpdateString("storageClass","nearline")

;  ---- Step 2
;  Send a PUT equivalent to this curl command

;  curl -X PUT --data-binary @[JSON_FILE_NAME].json \
;      -H "Authorization: Bearer [OAUTH2_TOKEN]" \
;      -H "Content-Type: application/json" \
;      "https://www.googleapis.com/storage/v1/b/[BUCKET_NAME]?fields=storageClass"

$oHttp = ObjCreate("Chilkat.Http")
$oHttp.AuthToken = $oSbToken.GetAsString()

$oHttp.SetUrlVar("bucket_name","chilkat-ocean")
Local $sUrl = "https://www.googleapis.com/storage/v1/b/{$bucket_name}?fields=storageClass"
$oResp = ObjCreate("Chilkat.HttpResponse")
$bSuccess = $oHttp.HttpJson("PUT",$sUrl,$oJson,"application/json",$oResp)
If ($bSuccess = False) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

Local $iResponseCode = $oResp.StatusCode
If ($iResponseCode = 401) Then
    ConsoleWrite($oResp.BodyStr & @CRLF)
    ConsoleWrite("If invalid credentials, then it is likely the access token expired." & @CRLF)
    ConsoleWrite("Your app should automatically fetch a new access token and re-try." & @CRLF)
    Exit
EndIf

;  On my first try at running this code, I received the following error response:
;  Response code: 400
;  Response body
;  {
;   "error": {
;    "errors": [
;     {
;      "domain": "global",
;      "reason": "invalid",
;      "message": "The combination of locationConstraint and storageClass you provided is not supported for your project"
;     }
;    ],
;    "code": 400,
;    "message": "The combination of locationConstraint and storageClass you provided is not supported for your project"
;   }
;  }
;  

;  This was because my storage location was a Multi-regional location, and I tried to assign the "regional" storage class,
;  which is not allowed. 

ConsoleWrite("Response code: " & $iResponseCode & @CRLF)
ConsoleWrite("Response body" & @CRLF)
ConsoleWrite($oResp.BodyStr & @CRLF)

;  A response code = 200 indicates success, and the response body contains the JSON
;  
;  Response code: 200
;  Response body
;  {
;   "storageClass": "NEARLINE"
;  }
;