Pascal (Lazarus/Delphi)

Amazon Glacier Describe Vault

See more Amazon Glacier Examples

Returns information about a vault, including the vault Amazon Resource Name (ARN), the date the vault was created, the number of archives contained within the vault, and the total size of all the archives in the vault... Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.AuthAws,
  Chilkat.Rest,
  Chilkat.StringBuilder,
  Chilkat.JsonObject;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  rest: TRest;
  bTls: Boolean;
  port: Integer;
  bAutoReconnect: Boolean;
  authAws: TAuthAws;
  sbResponseBody: TStringBuilder;
  respStatusCode: Integer;
  json: TJsonObject;
  CreationDate: string;
  LastInventoryDate: string;
  NumberOfArchives: Integer;
  SizeInBytes: Integer;
  VaultARN: string;
  VaultName: string;

begin
  success := False;

  //  This example requires the Chilkat API to have been previously unlocked.
  //  See Global Unlock Sample for sample code.

  rest := TRest.Create;

  //  Connect to the Amazon AWS REST server in the desired region.
  bTls := True;
  port := 443;
  bAutoReconnect := True;
  success := rest.Connect('glacier.us-west-2.amazonaws.com',port,bTls,bAutoReconnect);

  //  Provide AWS credentials.
  authAws := TAuthAws.Create;
  authAws.AccessKey := 'AWS_ACCESS_KEY';
  authAws.SecretKey := 'AWS_SECRET_KEY';
  authAws.ServiceName := 'glacier';
  authAws.Region := 'us-west-2';

  success := rest.SetAuthAws(authAws);

  //  --------------------------------------------------------------------------
  //  Note: The above REST connection and setup of the AWS credentials
  //  can be done once.  After connecting, any number of REST calls can be made.
  //  The "auto reconnect" property passed to rest.Connect indicates that if
  //  the connection is lost, a REST method call will automatically reconnect
  //  if needed.
  //  --------------------------------------------------------------------------

  //  For more information, see Glacier Describe Vault Reference Documentation
  //  
  rest.AddHeader('x-amz-glacier-version','2012-06-01');

  //  Describe the "chilkat" vault
  sbResponseBody := TStringBuilder.Create;
  success := rest.FullRequestNoBodySb('GET','/AWS_ACCOUNT_ID/vaults/chilkat',sbResponseBody);
  if (success <> True) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  respStatusCode := rest.ResponseStatusCode;
  if (respStatusCode >= 400) then
    begin
      WriteLn('Response Status Code = ' + respStatusCode);
      WriteLn('Response Header:');
      WriteLn(rest.ResponseHeader);
      WriteLn('Response Body:');
      WriteLn(sbResponseBody.GetAsString());
      Exit;
    end;

  //  Success is indicated by a 200 response status with an empty response body.
  WriteLn('response status code = ' + respStatusCode);

  json := TJsonObject.Create;
  json.LoadSb(sbResponseBody);
  json.EmitCompact := False;

  WriteLn(json.Emit());

  //  Use this online tool to generate parsing code from sample JSON: 
  //  Generate Parsing Code from JSON

  CreationDate := json.StringOf('CreationDate');
  LastInventoryDate := json.StringOf('LastInventoryDate');
  NumberOfArchives := json.IntOf('NumberOfArchives');
  SizeInBytes := json.IntOf('SizeInBytes');
  VaultARN := json.StringOf('VaultARN');
  VaultName := json.StringOf('VaultName');

  //  Sample response
  //  
  //  {
  //    "CreationDate": "2019-04-05T19:10:28.428Z",
  //    "LastInventoryDate": null,
  //    "NumberOfArchives": 0,
  //    "SizeInBytes": 0,
  //    "VaultARN": "arn:aws:glacier:us-west-2:954491834127:vaults/chilkat",
  //    "VaultName": "chilkat"
  //  }
  //  


  rest.Free;
  authAws.Free;
  sbResponseBody.Free;
  json.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.