Dart

Azure Storage: Set Blob Service Properties

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Azure Storage Blob Service REST API: Sample code to set a blob's service properties. Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Azure Blob Service Example: Set Blob Service Properties
  // See also: https://msdn.microsoft.com/en-us/library/azure/hh452235.aspx

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

  final rest = CkRest();

  // Connect to the Azure Storage Blob Service
  final bTls = true;
  final port = 443;
  final bAutoReconnect = true;
  // In this example, the storage account name is "chilkat".
  try {
    rest.connect('chilkat.blob.core.windows.net', port, bTls, bAutoReconnect);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Provide Azure Cloud credentials for the REST call.
  final azAuth = CkAuthAzureStorage();
  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';
  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.

  // This example will set logging properties.  The XML body of the request
  // will look like this:

  // <?xml version="1.0" encoding="utf-8"?>
  // <StorageServiceProperties>
  //     <Logging>
  //         <Version>version-number</Version>
  //         <Delete>true|false</Delete>
  //         <Read>true|false</Read>
  //         <Write>true|false</Write>
  //         <RetentionPolicy>
  //             <Enabled>true|false</Enabled>
  //             <Days>number-of-days</Days>
  //         </RetentionPolicy>
  //     </Logging>

  // Build the request:
  final xml = CkXml();
  xml.tag = 'StorageServiceProperties';
  final xLogging = xml.newChild('Logging', '');
  xLogging.newChild2('Version', '1.0');
  xLogging.newChild2('Delete', 'true');
  xLogging.newChild2('Read', 'true');
  xLogging.newChild2('Write', 'true');
  final xRetension = xLogging.newChild('RetentionPolicy', '');
  xRetension.newChild2('Enabled', 'true');
  xRetension.newChild2('Days', '7');

  // The expected response is a 202 response status code with no response body.
  final String responseStr;
  try {
    responseStr = rest.fullRequestString('PUT', '/?restype=service&comp=properties', xml.getXml());
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // When successful, the Azure Storage service will respond with a 202 response code,
  // with no response body.
  if (rest.responseStatusCode != 202) {
    // Examine the request/response to see what happened.
    print('response status code = ${rest.responseStatusCode}');
    print('response status text = ${rest.responseStatusText}');
    print('response header: ${rest.responseHeader}');
    print('response body (if any): $responseStr');
    print('---');
    print('LastRequestStartLine: ${rest.lastRequestStartLine}');
    print('LastRequestHeader: ${rest.lastRequestHeader}');
    return;
  }

  print('Success: Blob service properties updated!');
}