(Delphi ActiveX) Glacier Initiate Archive Retrieval Job

Demonstrates how to initiate an archive retrieval job to download an archive.

Note: This example requires Chilkat v9.5.0.78 or greater.

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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
rest: TChilkatRest;
bTls: Integer;
port: Integer;
bAutoReconnect: Integer;
success: Integer;
authAws: TChilkatAuthAws;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jobId: WideString;
location: WideString;

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

rest := TChilkatRest.Create(Self);

// Connect to the Amazon AWS REST server in the desired region.
bTls := 1;
port := 443;
bAutoReconnect := 1;
success := rest.Connect('glacier.us-west-2.amazonaws.com',port,bTls,bAutoReconnect);

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

success := rest.SetAuthAws(authAws.ControlInterface);

// --------------------------------------------------------------------------
// 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 Initiate Job Post Reference Documentation
// 
rest.AddHeader('x-amz-glacier-version','2012-06-01');

// The body of our request will contain this JSON:
// {
//   "Type": "archive-retrieval",
//   "ArchiveId": "NkbByEejwEggmBz2fTHgJrg0XBoDfjP4q6iu87-TjhqG6eGoOY9Z8i1_AUyUsuhPAdTqLHy8pTl5nfCFJmDl2yEZONi5L26Omw12vcs01MNGntHEQL8MBfGlqrEXAMPLEArchiveId"
//   "Description": "My archive description",
//   "SNSTopic": "arn:aws:sns:us-west-2:111111111111:Glacier-ArchiveRetrieval-topic-Example",
//   "Tier" : "Bulk"
// }

// Use this online tool to generate the code from sample JSON: 
// Generate Code to Create JSON

json := TChilkatJsonObject.Create(Self);
json.UpdateString('Type','archive-retrieval');
json.UpdateString('ArchiveId','ARCHIVE_ID');
json.UpdateString('Description','My archive description');
// Possible tiers are Bulk, Standard, and Expedited.
json.UpdateString('Tier','Bulk');
// The SNSTopic is optional.  If included, then notification is sent to the SNS topic when the job is complete.
// This example will omit the SNSTopic.

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);
sbResponseBody := TChilkatStringBuilder.Create(Self);

// Start an archive retrieval in for the vault named "chilkat".
success := rest.FullRequestSb('POST','/AWS_ACCOUNT_ID/vaults/chilkat/jobs',sbRequestBody.ControlInterface,sbResponseBody.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

respStatusCode := rest.ResponseStatusCode;
if (respStatusCode >= 400) then
  begin
    Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(rest.ResponseHeader);
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(sbResponseBody.GetAsString());
    Exit;
  end;

// Success is indicated by a 202 response status with an empty response body.
Memo1.Lines.Add('response status code = ' + IntToStr(respStatusCode));

// If successful, the response header looks like this.
// The Location and x-amz-job-id are two items of information we may wish to save..

// HTTP/1.1 202 Accepted
// x-amzn-RequestId: AAABZpJrTyioDC_HsOmHae8EZp_uBSJr6cnGOLKp_XJCl-Q
// Date: Wed, 10 Feb 2017 12:00:00 GMT 
// Location: /111122223333/vaults/examplevault/jobs/HkF9p6o7yjhFx-K3CGl6fuSm6VzW9T7esGQfco8nUXVYwS0jlb5gq1JZ55yHgt5vP54ZShjoQzQVVh7vEXAMPLEjobID
// x-amz-job-id: HkF9p6o7yjhFx-K3CGl6fuSm6VzW9T7esGQfco8nUXVYwS0jlb5gq1JZ55yHgt5vP54ZShjoQzQVVh7vEXAMPLEjobID
// 

jobId := rest.ResponseHdrByName('x-amz-job-id');
Memo1.Lines.Add('x-amz-job-id = ' + jobId);

location := rest.ResponseHdrByName('Location');
Memo1.Lines.Add('Location = ' + location);
end;