B4X

Azure Blob Service - List all Containers in a Storage Account

See more Azure Cloud Storage Examples

Azure Storage Blob Service REST API: Lists all the containers in a storage account. B4X

Dim success As Boolean = False

'  Azure Blob Service Example: List all of the containers in an account.

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

Dim rest As ChilkatRest
rest.Initialize("rest")

'  Connect to the Azure Storage Blob Service
Dim bTls As Boolean = True
Dim port As Int = 443
Dim bAutoReconnect As Boolean = True
'  In this example, the storage account name is "chilkat".
success = rest.Connect("chilkat.blob.core.windows.net", port, bTls, bAutoReconnect)
If success <> True Then
    Log(rest.LastErrorText)
    Return
End If


'  Provide Azure Cloud credentials for the REST call.
Dim azAuth As ChilkatAuthAzureStorage
azAuth.Initialize
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"
success = rest.SetAuthAzureStorage(azAuth)

'  URI parameters, such as "maxresults", are added by calling AddQueryParam
success = rest.AddQueryParam("maxresults", "1000")

'  Note: The application does not need to explicitly set the following
'  headers: x-ms-date, Authorization.  These headers
'  are automatically set by Chilkat.

Dim responseStr As String = rest.FullRequestNoBody("GET", "/?comp=list")
If rest.LastMethodSuccess <> True Then
    Log(rest.LastErrorText)
    Return
End If


'  When successful, the Azure Storage service will respond with a 200 response code,
'  with an XML body.  
If rest.ResponseStatusCode <> 200 Then
    '  Examine the request/response to see what happened.
    Log("response status code = " & rest.ResponseStatusCode)
    Log("response status text = " & rest.ResponseStatusText)
    Log("response header: " & rest.ResponseHeader)
    Log("response body (if any): " & responseStr)
    Log("---")
    Log("LastRequestStartLine: " & rest.LastRequestStartLine)
    Log("LastRequestHeader: " & rest.LastRequestHeader)
    Return
End If


'  Load the XML response for parsing.
'  A sample XML response containing 2 containers is shown below.
Dim xml As ChilkatXml
xml.Initialize
success = xml.LoadXml(responseStr)

Log(xml.GetXml)

'  Iterate over the containers, listing some information about each.
success = xml.FindChild2("Containers")
Dim numContainers As Int = xml.NumChildren
Dim i As Int = 0
Do While (i < numContainers)
    success = xml.GetChild2(i)
    Log("Container Name: " & xml.GetChildContent("Name"))
    Dim lastModDateStr As String = xml.ChilkatPath("Properties|Last-Modified|*")
    Log("Last Modified: " & lastModDateStr)
    '  The date/time string can be loaded into a CkDateTime object for conversion to other date formats..
    Dim dateTime As ChilkatDateTime
    dateTime.Initialize
    success = dateTime.SetFromRfc822(lastModDateStr)

    Dim leaseState As String = xml.ChilkatPath("Properties|LeaseState|*")
    Log("Lease State: " & leaseState)

    success = xml.GetParent2
    i = i + 1
Loop
success = xml.GetParent2

'  Sample XML response:

'  	<?xml version="1.0" encoding="utf-8" ?>
'  	<EnumerationResults ServiceEndpoint="https://chilkat.blob.core.windows.net/">
'  	    <MaxResults>1000</MaxResults>
'  	    <Containers>
'  	        <Container>
'  	            <Name>test</Name>
'  	            <Properties>
'  	                <Last-Modified>Wed, 20 Apr 2016 01:02:25 GMT</Last-Modified>
'  	                <Etag>"0x8D368B77024C583"</Etag>
'  	                <LeaseStatus>unlocked</LeaseStatus>
'  	                <LeaseState>available</LeaseState>
'  	            </Properties>
'  	        </Container>
'  	        <Container>
'  	            <Name>test2</Name>
'  	            <Properties>
'  	                <Last-Modified>Tue, 03 May 2016 17:13:01 GMT</Last-Modified>
'  	                <Etag>"0x8D373762EB6AC85"</Etag>
'  	                <LeaseStatus>unlocked</LeaseStatus>
'  	                <LeaseState>available</LeaseState>
'  	            </Properties>
'  	        </Container>
'  	    </Containers>
'  	    <NextMarker />
'  	</EnumerationResults>