(Delphi DLL) Create a Google Cloud Storage Bucket

See more Google Cloud Storage Examples

Demonstrates how to create a Google Cloud Storage bucket.

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Http, StringBuilder, HttpResponse, JsonObject, CkDateTime;

...

procedure TForm1.Button1Click(Sender: TObject);
var
sbToken: HCkStringBuilder;
json: HCkJsonObject;
http: HCkHttp;
url: PWideChar;
resp: HCkHttpResponse;
responseCode: Integer;
jsonResp: HCkJsonObject;
dt: HCkDateTime;

begin
// 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 := CkStringBuilder_Create();
CkStringBuilder_LoadFile(sbToken,'qa_data/tokens/googleCloudStorageAccessToken.txt','utf-8');

// ---- Step 1
// Create a JSON that contains the following information, replacing [VALUES_IN_BRACKETS] with the appropriate values:

// {
//   "name": "[BUCKET_NAME]",
//   "location": "[BUCKET_LOCATION]",
//   "storageClass": "[STORAGE_CLASS]"
// }

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'name','chilkat-ocean');
CkJsonObject_UpdateString(json,'location','us');
CkJsonObject_UpdateString(json,'storageClass','multi_regional');

// ---- Step 2
// Send a POST equivalent to this curl command

// curl -X POST --data-binary @[JSON_FILE_NAME].json \
//      -H "Authorization: Bearer [OAUTH2_TOKEN]" \
//      -H "Content-Type: application/json" \
//      "https://www.googleapis.com/storage/v1/b?project=[PROJECT_ID]"

http := CkHttp_Create();
CkHttp_putAuthToken(http,CkStringBuilder__getAsString(sbToken));

CkHttp_SetUrlVar(http,'project_id','chilkat-176611');
url := 'https://www.googleapis.com/storage/v1/b?project={$project_id}';
resp := CkHttp_PostJson3(http,url,'application/json',json);
if (CkHttp_getLastMethodSuccess(http) = False) then
  begin
    Memo1.Lines.Add(CkHttp__lastErrorText(http));
    Exit;
  end;

responseCode := CkHttpResponse_getStatusCode(resp);
if (responseCode = 401) then
  begin
    Memo1.Lines.Add(CkHttpResponse__bodyStr(resp));
    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.');
    CkHttpResponse_Dispose(resp);
    Exit;
  end;

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

// A successful response looks like this:
// Response code: 200
// Response body
// {
//  "kind": "storage#bucket",
//  "id": "chilkat-ocean",
//  "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-ocean",
//  "projectNumber": "933037264567",
//  "name": "chilkat-ocean",
//  "timeCreated": "2017-08-13T12:27:10.811Z",
//  "updated": "2017-08-13T12:27:10.811Z",
//  "metageneration": "1",
//  "location": "US",
//  "storageClass": "MULTI_REGIONAL",
//  "etag": "CAE="
// }
// 

// Parse the JSON response:
jsonResp := CkJsonObject_Create();
CkJsonObject_Load(jsonResp,CkHttpResponse__bodyStr(resp));

Memo1.Lines.Add('name: ' + CkJsonObject__stringOf(jsonResp,'name'));
Memo1.Lines.Add('timeCreated: ' + CkJsonObject__stringOf(jsonResp,'timeCreated'));

CkHttpResponse_Dispose(resp);

// Parse the date/time created.
dt := CkDateTime_Create();
CkDateTime_SetFromTimestamp(dt,CkJsonObject__stringOf(jsonResp,'timeCreated'));
// ...

CkStringBuilder_Dispose(sbToken);
CkJsonObject_Dispose(json);
CkHttp_Dispose(http);
CkJsonObject_Dispose(jsonResp);
CkDateTime_Dispose(dt);

end;