(AutoIt) Get Object MetaData from Google Cloud Storage

Demonstrates how to download a Google Cloud Storage object's metadata.

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")

; Send a GET equivalent to this curl command.

; curl -X GET \
;     -H "Authorization: Bearer [OAUTH2_TOKEN]" \
;     -o "[SAVE_TO_LOCATION]" \
;     "https://www.googleapis.com/storage/v1/b/[BUCKET_NAME]/o/[OBJECT_NAME]?projection=full"

$oHttp = ObjCreate("Chilkat.Http")

$oHttp.AuthToken = $oSbToken.GetAsString()

; Construct a URL to download the metadata for the object named "starfish.jpg" located in the "chilkat-ocean" bucket.
$oHttp.SetUrlVar("bucket_name","chilkat-ocean")
$oHttp.SetUrlVar("object_name","starfish.jpg")
Local $sUrl = "https://www.googleapis.com/storage/v1/b/{$bucket_name}/o/{$object_name}?projection=full"

; If there is an error response, then we didn't actually download the metadata,
; but instead we downloaded an error response..
$oSbMetaData = ObjCreate("Chilkat.StringBuilder")
Local $bSuccess = $oHttp.DownloadSb($sUrl,"utf-8",$oSbMetaData)
If ($bSuccess = False) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

Local $iResponseCode = $oHttp.LastStatus
If ($iResponseCode = 401) Then
    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)
EndIf

If ($iResponseCode <> 200) Then
    ConsoleWrite("Error response code = " & $iResponseCode & @CRLF)
    ConsoleWrite("Error:" & @CRLF)
    ConsoleWrite($oSbMetaData.GetAsString() & @CRLF)
    Exit
EndIf

ConsoleWrite($oSbMetaData.GetAsString() & @CRLF)
ConsoleWrite("Success." & @CRLF)

; Sample output:

; {
;  "kind": "storage#object",
;  "id": "chilkat-ocean/starfish.jpg/1502670320090292",
;  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg",
;  "name": "starfish.jpg",
;  "bucket": "chilkat-ocean",
;  "generation": "1502670320090292",
;  "metageneration": "1",
;  "contentType": "image/jpeg",
;  "timeCreated": "2017-08-14T00:25:20.040Z",
;  "updated": "2017-08-14T00:25:20.040Z",
;  "storageClass": "MULTI_REGIONAL",
;  "timeStorageClassUpdated": "2017-08-14T00:25:20.040Z",
;  "size": "6229",
;  "md5Hash": "LpxZ2/JmI2fcl9/dqF2gSA==",
;  "mediaLink": "https://www.googleapis.com/download/storage/v1/b/chilkat-ocean/o/starfish.jpg?generation=1502670320090292&alt=media",
;  "acl": [
;   {
;    "kind": "storage#objectAccessControl",
;    "id": "chilkat-ocean/starfish.jpg/1502670320090292/project-owners-933037264567",
;    "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg/acl/project-owners-933037264567",
;    "bucket": "chilkat-ocean",
;    "object": "starfish.jpg",
;    "generation": "1502670320090292",
;    "entity": "project-owners-933037264567",
;    "role": "OWNER",
;    "projectTeam": {
;     "projectNumber": "933037264567",
;     "team": "owners"
;    },
;    "etag": "CLT5kpW71dUCEAE="
;   },
;   {
;    "kind": "storage#objectAccessControl",
;    "id": "chilkat-ocean/starfish.jpg/1502670320090292/project-editors-933037264567",
;    "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg/acl/project-editors-933037264567",
;    "bucket": "chilkat-ocean",
;    "object": "starfish.jpg",
;    "generation": "1502670320090292",
;    "entity": "project-editors-933037264567",
;    "role": "OWNER",
;    "projectTeam": {
;     "projectNumber": "933037264567",
;     "team": "editors"
;    },
;    "etag": "CLT5kpW71dUCEAE="
;   },
;   {
;    "kind": "storage#objectAccessControl",
;    "id": "chilkat-ocean/starfish.jpg/1502670320090292/project-viewers-933037264567",
;    "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg/acl/project-viewers-933037264567",
;    "bucket": "chilkat-ocean",
;    "object": "starfish.jpg",
;    "generation": "1502670320090292",
;    "entity": "project-viewers-933037264567",
;    "role": "READER",
;    "projectTeam": {
;     "projectNumber": "933037264567",
;     "team": "viewers"
;    },
;    "etag": "CLT5kpW71dUCEAE="
;   },
;   {
;    "kind": "storage#objectAccessControl",
;    "id": "chilkat-ocean/starfish.jpg/1502670320090292/user-starfish@chilkat-176611.iam.gserviceaccount.com",
;    "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean/o/starfish.jpg/acl/user-starfish@chilkat-176611.iam.gserviceaccount.com",
;    "bucket": "chilkat-ocean",
;    "object": "starfish.jpg",
;    "generation": "1502670320090292",
;    "entity": "user-starfish@chilkat-176611.iam.gserviceaccount.com",
;    "role": "OWNER",
;    "email": "starfish@chilkat-176611.iam.gserviceaccount.com",
;    "etag": "CLT5kpW71dUCEAE="
;   }
;  ],
;  "owner": {
;   "entity": "user-starfish@chilkat-176611.iam.gserviceaccount.com"
;  },
;  "crc32c": "9RjgwQ==",
;  "etag": "CLT5kpW71dUCEAE="
; }
;