Delphi ActiveX Requires Chilkat v11.0.0+

Upload In-Memory Binary Data to Google Cloud Storage

See more Google Cloud Storage Examples

Demonstrates how to upload in-memory binary data to Google Cloud Storage. Delphi ActiveX

var
success: Integer;
sbToken: TChilkatStringBuilder;
http: TChilkatHttp;
jpgUrl: WideString;
jpgData: TChilkatBinData;
url: WideString;
resp: TChilkatHttpResponse;
responseCode: Integer;

begin
success := 0;

//  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..
sbToken := TChilkatStringBuilder.Create(Self);
sbToken.LoadFile('qa_data/tokens/googleCloudStorageAccessToken.txt','utf-8');

//  Send a POST equivalent to this curl command.
//  The content of the file is contained in the request body.

//  curl -X POST --data-binary @[OBJECT] \
//      -H "Authorization: Bearer [OAUTH2_TOKEN]" \
//      -H "Content-Type: [OBJECT_CONTENT_TYPE]" \
//      "https://www.googleapis.com/upload/storage/v1/b/[BUCKET_NAME]/o?uploadType=media&name=[OBJECT_NAME]"

http := TChilkatHttp.Create(Self);

//  Download a JPG image from the Internet, and then upload this JPG to
//  a Google Storage bucket.
jpgUrl := 'https://www.chilkatsoft.com/images/starfish.jpg';

jpgData := TChilkatBinData.Create(Self);
success := http.DownloadBd(jpgUrl,jpgData.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

http.AuthToken := sbToken.GetAsString();

//  Construct a URL to upload to an object named "starfish.jpg" in the "chilkat-ocean" bucket.
http.SetUrlVar('bucket_name','chilkat-ocean');
http.SetUrlVar('object_name','starfish.jpg');
url := 'https://www.googleapis.com/upload/storage/v1/b/{$bucket_name}/o?uploadType=media&name={$object_name}';

resp := TChilkatHttpResponse.Create(Self);
success := http.HttpBd('POST',url,jpgData.ControlInterface,'image/jpeg',resp.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(http.LastErrorText);
    Exit;
  end;

responseCode := resp.StatusCode;
if (responseCode = 401) then
  begin
    Memo1.Lines.Add(resp.BodyStr);
    Memo1.Lines.Add('If invalid credentials, then it is likely the access token expired.');
    Memo1.Lines.Add('Your app should automatically fetch a new access token and re-try.');
    Exit;
  end;

Memo1.Lines.Add('Response code: ' + IntToStr(responseCode));
Memo1.Lines.Add('Response body');
Memo1.Lines.Add(resp.BodyStr);

//  A successful response looks like this:
//  Response code: 200
//  Response body
//  {
//   "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",
//   "crc32c": "9RjgwQ==",
//   "etag": "CLT5kpW71dUCEAE="
//  }