Chilkat HOME .NET Core C# Android™ AutoIt C C# C++ Chilkat2-Python CkPython Classic ASP DataFlex Delphi ActiveX Delphi DLL Go Java Lianja Mono C# Node.js Objective-C PHP ActiveX PHP Extension Perl PowerBuilder PowerShell PureBasic Ruby SQL Server Swift 2 Swift 3,4,5... Tcl Unicode C Unicode C++ VB.NET VBScript Visual Basic 6.0 Visual FoxPro Xojo Plugin
(PHP Extension) Wasabi File Streaming UploadSee more Wasabi ExamplesDemonstrates how to do a streaming upload from a file to the Wasabi storage service. The AWS authorization presents some difficulties when the REST request body is to be streamed from a file (or from some other source). The issue is that the SHA-256 hash of the file data must be calculated. There are only two possible ways to do this: (1) stream the file into memory in its entirety and calculate the SHA-256 hash prior to uploading, or (2) pre-calculate the SHA-256 in a streaming fashion, and then provide it to the AWS authentication object. If the application does NOT pre-compute the SHA-256, then Chilkat (internally) is forced to stream into memory, calculate the SHA-256, and then upload from the in-memory copy of the file.
<?php include("chilkat.php"); // Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0 // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // This first part is optional. AWS authentication requires // the SHA-256 hash of the request body (i.e. the contents of the file // to be uploaded). We can choose to pre-calculate the SHA-256 in a streaming fashion // and then provide it to the authenticator object. This way, if the file is // extremely large, it never needs to completely reside in memory. $crypt = new CkCrypt2(); // ---------------------------------------------------- // Important: Wasabi requires a lowercase hex format. // ---------------------------------------------------- $crypt->put_EncodingMode('hex-lower'); $crypt->put_HashAlgorithm('sha-256'); $fileToUploadPath = 'qa_data/xml/hamlet.xml'; $hashStr = $crypt->hashFileENC($fileToUploadPath); $rest = new CkRest(); // Connect to the Amazon AWS REST server. $bTls = true; $port = 443; $bAutoReconnect = true; // This example will demonstrate uploading to a bucket in the eu-west-2 region $success = $rest->Connect('s3.eu-west-2.wasabisys.com',$port,$bTls,$bAutoReconnect); // Provide AWS credentials for the REST call. $authAws = new CkAuthAws(); $authAws->put_AccessKey('access-key'); $authAws->put_SecretKey('secret-key'); $authAws->put_ServiceName('s3'); // Provide the pre-computed SHA-256 here: $authAws->put_PrecomputedSha256($hashStr); $success = $rest->SetAuthAws($authAws); $rest->AddHeader('Expect','100-continue'); $rest->AddHeader('Content-Type','application/xml'); // Set the bucket name via the HOST header. // In this case, the bucket name is "chilkat100". $rest->put_Host('chilkat100.s3.eu-west-2.wasabisys.com'); $fileStream = new CkStream(); $fileStream->put_SourceFile($fileToUploadPath); // Upload to the Wasabi Storage service. // If the application provided the SHA-256 hash of the file contents (as shown above) // then file is streamed and never has to completely reside in memory. // If the application did NOT provide the SHA-256, then Chilkat will (internally) // load the entire file into memory, calculate the SHA-256, and then upload. $responseStr = $rest->fullRequestStream('PUT','/hamlet.xml',$fileStream); if ($rest->get_LastMethodSuccess() != true) { print $rest->lastErrorText() . "\n"; exit; } // When successful, the Wasabi Storage service will respond with a 200 response code, // with an XML body. if ($rest->get_ResponseStatusCode() == 200) { print $responseStr . "\n"; print 'File uploaded.' . "\n"; } else { // Examine the request/response to see what happened. print 'response status code = ' . $rest->get_ResponseStatusCode() . "\n"; print 'response status text = ' . $rest->responseStatusText() . "\n"; print 'response header: ' . $rest->responseHeader() . "\n"; print 'response body: ' . $responseStr . "\n"; print '---' . "\n"; print 'LastRequestStartLine: ' . $rest->lastRequestStartLine() . "\n"; print 'LastRequestHeader: ' . $rest->lastRequestHeader() . "\n"; } ?> |
© 2000-2024 Chilkat Software, Inc. All Rights Reserved.