(AutoIt) Manage Cloud Storage Bucket Labels

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Demonstrates how to add, update, and delete labels for a Cloud Storage bucket.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

; 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 PATCH request that will be sent.
; This specifies labels to be added, updated, and/or deleted.
; (To delete a label, set its value equal to null.)

; {
;   "labels": {
;     "new_label_key": "new_label_value",
;     "existing_label_key": "updated_label_value",
;     "old_label_key": null
;   }
; }

; ---------
; Important
; ---------
; You can apply multiple labels to each bucket, with a maximum of 64 labels per bucket.

;     - Keys and values cannot be longer than 63 characters each.
;     - Keys and values can only contain lowercase letters, numeric characters, underscores, and dashes. International characters are allowed.
;     - Label keys must start with a lowercase letter and international characters are allowed.
;     - Label keys cannot be empty.

; Build JSON to update labels.
; 
; During the testing of this example, my bucket already has the following labels:
; {
;  "labels": {
;   "test1": "xyz",
;   "test": "abc",
;   "a": "abc"
;  }
; }

; For this example, I'm going to add a label "b", delete the label "test1", and update
; the label "test".
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.UpdateString("labels.b","bbb")
$oJson.UpdateString("labels.test","abc123")
$oJson.UpdateNull("labels.test1")

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

; curl -X PATCH --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=labels"

$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=labels"
Local $oResp = $oHttp.PText("PATCH",$sUrl,$oJson.Emit(),"utf-8","application/json",False,False)
If ($oHttp.LastMethodSuccess = 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

; Note: A 400 response code is likely caused by illegal characters used for a label name and/or value.

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
; for the new/updated set of labels
; Response code: 200
; Response body
; {
;  "labels": {
;   "test": "abc123",
;   "a": "abc",
;   "b": "bbb"
;  }
; }