Delphi DLL Google Cloud Storage: List Buckets

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Retrieves a list of buckets for a given project.

Documentation: https://cloud.google.com/storage/docs/json_api/v1/buckets/list

CURL Command

curl -X GET https://www.googleapis.com/storage/v1/b \
    --header "Authorization: Bearer CLOUD_STORAGE_TOKEN" \
    --data "project=MY_CLOUD_STORAGE_PROJECT"

Delphi DLL Example

var
rest: HCkRest;
success: Boolean;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
jsonResponse: HCkJsonObject;
i: Integer;
count_i: Integer;
kind: PWideChar;
id: PWideChar;
selfLink: PWideChar;
projectNumber: PWideChar;
name: PWideChar;
timeCreated: PWideChar;
updated: PWideChar;
metageneration: PWideChar;
location: PWideChar;
storageClass: PWideChar;
etag: PWideChar;

begin
rest := CkRest_Create();

//  URL: https://www.googleapis.com/storage/v1/b
bTls := True;
port := 443;
bAutoReconnect := True;
success := CkRest_Connect(rest,'www.googleapis.com',port,bTls,bAutoReconnect);
if (success <> True) then
  begin
    Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(CkRest_getConnectFailReason(rest)));
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

CkRest_AddQueryParam(rest,'project','MY_CLOUD_STORAGE_PROJECT');

CkRest_AddHeader(rest,'Authorization','Bearer CLOUD_STORAGE_TOKEN');

sbResponseBody := CkStringBuilder_Create();
success := CkRest_FullRequestNoBodySb(rest,'GET','/storage/v1/b',sbResponseBody);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;
respStatusCode := CkRest_getResponseStatusCode(rest);
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkRest__responseHeader(rest));
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponseBody));
    Exit;
  end;

jsonResponse := CkJsonObject_Create();
CkJsonObject_LoadSb(jsonResponse,sbResponseBody);

//  See the Online Tool for Generating JSON Parse Code

kind := CkJsonObject__stringOf(jsonResponse,'kind');
i := 0;
count_i := CkJsonObject_SizeOfArray(jsonResponse,'items');
while i < count_i do
  begin
CkJsonObject_putI(jsonResponse,i);
    kind := CkJsonObject__stringOf(jsonResponse,'items[i].kind');
    id := CkJsonObject__stringOf(jsonResponse,'items[i].id');
    selfLink := CkJsonObject__stringOf(jsonResponse,'items[i].selfLink');
    projectNumber := CkJsonObject__stringOf(jsonResponse,'items[i].projectNumber');
    name := CkJsonObject__stringOf(jsonResponse,'items[i].name');
    timeCreated := CkJsonObject__stringOf(jsonResponse,'items[i].timeCreated');
    updated := CkJsonObject__stringOf(jsonResponse,'items[i].updated');
    metageneration := CkJsonObject__stringOf(jsonResponse,'items[i].metageneration');
    location := CkJsonObject__stringOf(jsonResponse,'items[i].location');
    storageClass := CkJsonObject__stringOf(jsonResponse,'items[i].storageClass');
    etag := CkJsonObject__stringOf(jsonResponse,'items[i].etag');
    i := i + 1;
  end;

CkRest_Dispose(rest);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jsonResponse);

Sample JSON Response Body

{
  "kind": "storage#buckets",
  "items": [
    {
      "kind": "storage#bucket",
      "id": "chilkat-bucket",
      "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-bucket",
      "projectNumber": "5332332985",
      "name": "chilkat-bucket",
      "timeCreated": "2018-10-23T00:04:44.507Z",
      "updated": "2018-10-23T00:04:44.507Z",
      "metageneration": "1",
      "location": "US",
      "storageClass": "MULTI_REGIONAL",
      "etag": "CAE="
    },
    {
      "kind": "storage#bucket",
      "id": "chilkat-images",
      "selfLink": "https://www.googleapis.com/storage/v1/b/chilkat-images",
      "projectNumber": "5332332985",
      "name": "chilkat-images",
      "timeCreated": "2018-10-23T11:24:43.000Z",
      "updated": "2018-10-23T11:24:43.000Z",
      "metageneration": "1",
      "location": "US",
      "storageClass": "MULTI_REGIONAL",
      "etag": "CAE="
    }
  ]
}