Delphi DLL

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 DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Rest, AuthAzureStorage, Xml, CkDateTime;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
rest: HCkRest;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
azAuth: HCkAuthAzureStorage;
responseStr: PWideChar;
xml: HCkXml;
numContainers: Integer;
i: Integer;
lastModDateStr: PWideChar;
dateTime: HCkDateTime;
leaseState: PWideChar;

begin
success := False;

// 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 := CkRest_Create();

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

// Provide Azure Cloud credentials for the REST call.
azAuth := CkAuthAzureStorage_Create();
CkAuthAzureStorage_putAccessKey(azAuth,'AZURE_ACCESS_KEY');
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
CkAuthAzureStorage_putAccount(azAuth,'chilkat');
CkAuthAzureStorage_putScheme(azAuth,'SharedKey');
CkAuthAzureStorage_putService(azAuth,'Blob');
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
CkAuthAzureStorage_putXMsVersion(azAuth,'2021-08-06');
success := CkRest_SetAuthAzureStorage(rest,azAuth);

// URI parameters, such as "maxresults", are added by calling AddQueryParam
success := CkRest_AddQueryParam(rest,'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 := CkRest__fullRequestNoBody(rest,'GET','/?comp=list');
if (CkRest_getLastMethodSuccess(rest) <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

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

// Load the XML response for parsing.
// A sample XML response containing 2 containers is shown below.
xml := CkXml_Create();
success := CkXml_LoadXml(xml,responseStr);

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

// Iterate over the containers, listing some information about each.
success := CkXml_FindChild2(xml,'Containers');
numContainers := CkXml_getNumChildren(xml);
i := 0;
while (i < numContainers) do
  begin
    success := CkXml_GetChild2(xml,i);
    Memo1.Lines.Add('Container Name: ' + CkXml__getChildContent(xml,'Name'));
    lastModDateStr := CkXml__chilkatPath(xml,'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 := CkDateTime_Create();
    success := CkDateTime_SetFromRfc822(dateTime,lastModDateStr);

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

    success := CkXml_GetParent2(xml);
    i := i + 1;
  end;

success := CkXml_GetParent2(xml);

// 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>

CkRest_Dispose(rest);
CkAuthAzureStorage_Dispose(azAuth);
CkXml_Dispose(xml);
    CkDateTime_Dispose(dateTime);

end;