(Perl) Azure Storage: Download Binary Blob to Memory

See more Azure Cloud Storage Examples

Sample code to download an Azure blob to a Chilkat BinData object, from which the contents can be accessed by your application.

For more information, see https://docs.microsoft.com/en-us/rest/api/storageservices/get-blob

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$rest = chilkat::CkRest->new();

# 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) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

# Provide Azure Cloud credentials for the REST call.
$azAuth = chilkat::CkAuthAzureStorage->new();
$azAuth->put_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->put_Account("chilkat");
$azAuth->put_Scheme("SharedKey");
$azAuth->put_Service("Blob");
# This causes the "x-ms-version: 2021-08-06" header to be automatically added.
$azAuth->put_XMsVersion("2021-08-06");
$success = $rest->SetAuthAzureStorage($azAuth);

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

# The Azure blob container is "test", the file is "starfish.jpg"
$bd = chilkat::CkBinData->new();
$success = $rest->FullRequestNoBodyBd("GET","/test/starfish.jpg",$bd);
if ($success == 0) {
    # Examine the request/response to see what happened.
    print "response status code = " . $rest->get_ResponseStatusCode() . "\r\n";
    print "response status text = " . $rest->responseStatusText() . "\r\n";
    print "response header: " . $rest->responseHeader() . "\r\n";
    print "---" . "\r\n";
    print "LastRequestStartLine: " . $rest->lastRequestStartLine() . "\r\n";
    print "LastRequestHeader: " . $rest->lastRequestHeader() . "\r\n";
    exit;
}

$success = $bd->WriteFile("qa_output/starfish.jpg");

print "Success." . "\r\n";