Dart
Dart
Azure Storage: List Blobs
See more Azure Cloud Storage Examples
Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.Chilkat Dart Downloads
import 'package:chilkat/chilkat.dart';
void main() {
// Azure Blob Service Example: List the blobs in a specified container.
// See also: https://msdn.microsoft.com/en-us/library/azure/dd135734.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.
// The expected success response is a 200 response status code with an XML response body.
// In this example, we are listing the blobs in the container named "mycontainer".
final String responseStr;
try {
responseStr = rest.fullRequestNoBody('GET', '/mycontainer?restype=container&comp=list');
} on ChilkatException catch (e) {
print(e.lastErrorText);
return;
}
// When successful, the Azure Storage service will respond with a 200 response status code,
// with an XML response 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());
// Let's iterate over the blobs...
final lastMod = CkDateTime();
final numBlobs = xml.numChildrenAt('Blobs');
var i = 0;
final dt = CkDtObj();
while (i < numBlobs) {
print('---- Blob $i ----');
xml.i = i;
print('Name: ${xml.getChildContent('Blobs|Blob[i]|Name')}');
print('Content-Length: ${xml.getChildContent('Blobs|Blob[i]|Properties|Content-Length')}');
print('Content-Type: ${xml.getChildContent('Blobs|Blob[i]|Properties|Content-Type')}');
print('Content-MD5: ${xml.getChildContent('Blobs|Blob[i]|Properties|Content-MD5')}');
print('BlobType: ${xml.getChildContent('Blobs|Blob[i]|Properties|BlobType')}');
print('LeaseStatus: ${xml.getChildContent('Blobs|Blob[i]|Properties|LeaseStatus')}');
lastMod.setFromRfc822(xml.getChildContent('Blobs|Blob[i]|Properties|Last-Modified'));
lastMod.toDtObj(true, dt);
print('Last-Modified YMD: ${dt.year},${dt.month},${dt.day}');
i++;
}
print('-------------------------');
// Use the ChilkatPath method to get information for a specific blob:
// For example, let's say we want the Last-Modified date/time for
// the blob named "helloWorld.txt"
final lastModStr = xml.chilkatPath('/C/Name,helloWorld.txt|..|Properties|Last-Modified|*');
print('helloWorld.txt Last-Modified: $lastModStr');
print('Success.');
// <?xml version="1.0" encoding="utf-8" ?>
// <EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/" ContainerName="test">
// <Blobs>
// <Blob>
// <Name>hamletC.xml</Name>
// <Properties>
// <Last-Modified>Mon, 02 May 2016 23:50:30 GMT</Last-Modified>
// <Etag>0x8D372E48B6D323A</Etag>
// <Content-Length>279658</Content-Length>
// <Content-Type>application/octet-stream</Content-Type>
// <Content-Encoding />
// <Content-Language />
// <Content-MD5>4E6prI9haw81xadSLeEj3Q==</Content-MD5>
// <Cache-Control />
// <Content-Disposition>attachment; filename="hamletC.xml"</Content-Disposition>
// <BlobType>BlockBlob</BlobType>
// <LeaseStatus>unlocked</LeaseStatus>
// <LeaseState>available</LeaseState>
// </Properties>
// </Blob>
// <Blob>
// <Name>helloWorld.txt</Name>
// <Properties>
// <Last-Modified>Mon, 02 May 2016 15:21:55 GMT</Last-Modified>
// <Etag>0x8D3729D7EE38299</Etag>
// <Content-Length>12</Content-Length>
// <Content-Type>application/octet-stream</Content-Type>
// <Content-Encoding />
// <Content-Language />
// <Content-MD5>7Qdih1MuhjZehB6Sv8UNjA==</Content-MD5>
// <Cache-Control />
// <Content-Disposition>attachment; filename="helloWorld.txt"</Content-Disposition>
// <BlobType>BlockBlob</BlobType>
// <LeaseStatus>unlocked</LeaseStatus>
// <LeaseState>available</LeaseState>
// </Properties>
// </Blob>
// <Blob>
// <Name>thisIsATest.txt</Name>
// <Properties>
// <Last-Modified>Tue, 03 May 2016 00:22:13 GMT</Last-Modified>
// <Etag>0x8D372E8F9B2A62E</Etag>
// <Content-Length>1600</Content-Length>
// <Content-Type>application/octet-stream</Content-Type>
// <Content-Encoding />
// <Content-Language />
// <Content-MD5>FhgUXYfePg2ItsraPmz0Xg==</Content-MD5>
// <Cache-Control />
// <Content-Disposition>attachment; filename="thisIsATest.txt"</Content-Disposition>
// <BlobType>BlockBlob</BlobType>
// <LeaseStatus>unlocked</LeaseStatus>
// <LeaseState>available</LeaseState>
// </Properties>
// </Blob>
// </Blobs>
// <NextMarker />
// </EnumerationResults>
//
}