Perl

Download a Binary File into Memory

See more Azure Cloud Storage Examples

Downloads a binary file into memory. Perl

use chilkat();

$success = 0;

# Azure File Service Example: Download a Binary File to Memory
# See:  https://docs.microsoft.com/en-us/rest/api/storageservices/get-file

# 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 = $rest->Connect("chilkat.file.core.windows.net",$port,$bTls,$bAutoReconnect);
if ($success == 0) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

# Provide Azure Cloud credentials for the REST calls.
$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("File");
# 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: x-ms-date, Authorization.  These headers
# are automatically set by Chilkat.

# Send a GET request to download the file "penguins.jpg" to a BinData object.
# (The share name is "pip")
$bdFileContents = chilkat::CkBinData->new();
$success = $rest->FullRequestNoBodyBd("GET","/pip/wildlife/antarctic/penguins.jpg",$bdFileContents);
if ($success == 0) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

# When successful, the response status will be 200.
# If a non-success status code is returned, then the bdFileContents actually contains the XML error message.
if ($rest->get_ResponseStatusCode() != 200) {
    # 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";
    $sbXmlErr = chilkat::CkStringBuilder->new();
    $sbXmlErr->AppendBd($bdFileContents,"utf-8",0,0);
    print "response body (if any): " . $sbXmlErr->getAsString() . "\r\n";
    print "---" . "\r\n";
    print "LastRequestStartLine: " . $rest->lastRequestStartLine() . "\r\n";
    print "LastRequestHeader: " . $rest->lastRequestHeader() . "\r\n";
    exit;
}

print "Size of the downloaded file = " . $bdFileContents->get_NumBytes() . "\r\n";

# See the online reference documentation for the BinData class for ways
# to access the bytes.

$bdFileContents->WriteFile("qa_output/penguins.jpg");