Delphi ActiveX

Azure Blob Service - List all Containers in a Storage Account

See more Azure Cloud Storage Examples

Azure Storage Blob Service REST API: Lists all the containers in a storage account. Delphi ActiveX

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
success: Integer;
rest: TChilkatRest;
bTls: Integer;
port: Integer;
bAutoReconnect: Integer;
azAuth: TChilkatAuthAzureStorage;
responseStr: WideString;
xml: TChilkatXml;
numContainers: Integer;
i: Integer;
lastModDateStr: WideString;
dateTime: TCkDateTime;
leaseState: WideString;

begin
success := 0;

// Azure Blob Service Example: List all of the containers in an account.

// 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 Azure Storage Blob Service
bTls := 1;
port := 443;
bAutoReconnect := 1;
// In this example, the storage account name is "chilkat".
success := rest.Connect('chilkat.blob.core.windows.net',port,bTls,bAutoReconnect);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// Provide Azure Cloud credentials for the REST call.
azAuth := TChilkatAuthAzureStorage.Create(Self);
azAuth.AccessKey := 'AZURE_ACCESS_KEY';
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.Account := 'chilkat';
azAuth.Scheme := 'SharedKey';
azAuth.Service := 'Blob';
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.XMsVersion := '2021-08-06';
success := rest.SetAuthAzureStorage(azAuth.ControlInterface);

// URI parameters, such as "maxresults", are added by calling AddQueryParam
success := rest.AddQueryParam('maxresults','1000');

// Note: The application does not need to explicitly set the following
// headers: x-ms-date, Authorization.  These headers
// are automatically set by Chilkat.

responseStr := rest.FullRequestNoBody('GET','/?comp=list');
if (rest.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// When successful, the Azure Storage service will respond with a 200 response code,
// with an XML body.  
if (rest.ResponseStatusCode <> 200) then
  begin
    // Examine the request/response to see what happened.
    Memo1.Lines.Add('response status code = ' + IntToStr(rest.ResponseStatusCode));
    Memo1.Lines.Add('response status text = ' + rest.ResponseStatusText);
    Memo1.Lines.Add('response header: ' + rest.ResponseHeader);
    Memo1.Lines.Add('response body (if any): ' + responseStr);
    Memo1.Lines.Add('---');
    Memo1.Lines.Add('LastRequestStartLine: ' + rest.LastRequestStartLine);
    Memo1.Lines.Add('LastRequestHeader: ' + rest.LastRequestHeader);
    Exit;
  end;

// Load the XML response for parsing.
// A sample XML response containing 2 containers is shown below.
xml := TChilkatXml.Create(Self);
success := xml.LoadXml(responseStr);

Memo1.Lines.Add(xml.GetXml());

// Iterate over the containers, listing some information about each.
success := xml.FindChild2('Containers');
numContainers := xml.NumChildren;
i := 0;
while (i < numContainers) do
  begin
    success := xml.GetChild2(i);
    Memo1.Lines.Add('Container Name: ' + xml.GetChildContent('Name'));
    lastModDateStr := xml.ChilkatPath('Properties|Last-Modified|*');
    Memo1.Lines.Add('Last Modified: ' + lastModDateStr);
    // The date/time string can be loaded into a CkDateTime object for conversion to other date formats..
    dateTime := TCkDateTime.Create(Self);
    success := dateTime.SetFromRfc822(lastModDateStr);

    leaseState := xml.ChilkatPath('Properties|LeaseState|*');
    Memo1.Lines.Add('Lease State: ' + leaseState);

    success := xml.GetParent2();
    i := i + 1;
  end;

success := xml.GetParent2();

// Sample XML response:

// 	<?xml version="1.0" encoding="utf-8" ?>
// 	<EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/">
// 	    <MaxResults>1000</MaxResults>
// 	    <Containers>
// 	        <Container>
// 	            <Name>test</Name>
// 	            <Properties>
// 	                <Last-Modified>Wed, 20 Apr 2016 01:02:25 GMT</Last-Modified>
// 	                <Etag>"0x8D368B77024C583"</Etag>
// 	                <LeaseStatus>unlocked</LeaseStatus>
// 	                <LeaseState>available</LeaseState>
// 	            </Properties>
// 	        </Container>
// 	        <Container>
// 	            <Name>test2</Name>
// 	            <Properties>
// 	                <Last-Modified>Tue, 03 May 2016 17:13:01 GMT</Last-Modified>
// 	                <Etag>"0x8D373762EB6AC85"</Etag>
// 	                <LeaseStatus>unlocked</LeaseStatus>
// 	                <LeaseState>available</LeaseState>
// 	            </Properties>
// 	        </Container>
// 	    </Containers>
// 	    <NextMarker />
// 	</EnumerationResults>
end;