Dart

Azure Storage: Get Blob Service Stats

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Azure Storage Blob Service REST API: Sample code to get Blob Service Stats Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Azure Blob Service Example: Get Blob Service Stats

  // 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".
  // ---- IMPORTANT ----
  // The "-secondary" suffix is required.
  // This requires an Azure storage account with replication set to "Read-access geo-redundant storage (RA-GRS)"
  // If you made the change just prior to testing this example, you'll need to give it time for the 
  // DNS to become available..  
  // ---- IMPORTANT ----
  try {
    rest.connect('chilkat-secondary.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.

  final String responseStr;
  try {
    responseStr = rest.fullRequestNoBody('GET', '/?restype=service&comp=stats');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // When successful, the Azure Storage service will respond with a 200 response code,
  // with an XML body.  
  if (rest.responseStatusCode != 200) {
    // 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;
  }

  // Load the XML response for parsing.
  // An example of the response XML is shown below.
  final xml = CkXml();
  xml.loadXml(responseStr);

  print(xml.getXml());

  // Use the ChilkatPath method to get various pieces of information out
  // of the XML.  For example:

  print('Status = ${xml.chilkatPath('GeoReplication|Status|*')}');
  final lastSyncTimeStr = xml.chilkatPath('GeoReplication|LastSyncTime|*');
  print('LastSyncTime = $lastSyncTimeStr');

  // The date/time string can be loaded into a CkDateTime object for 
  // access to individual parts, or conversion to other formats.
  final dateTime = CkDateTime();
  dateTime.setFromRfc822(lastSyncTimeStr);

  // For example:
  final bLocalTime = true;
  final dt = CkDtObj();
  dateTime.toDtObj(bLocalTime, dt);

  print('${dt.year}/${dt.month}/${dt.day}');

  // <StorageServiceStats>
  //     <GeoReplication>
  //         <Status>live</Status>
  //         <LastSyncTime>Tue, 03 May 2016 23:57:54 GMT</LastSyncTime>
  //     </GeoReplication>
  // </StorageServiceStats>
}