Visual Basic 6.0

Get Container Metadata

See more Azure Cloud Storage Examples

Azure Storage Blob Service REST API: Sample code to get the user-defined metadata of a container. Visual Basic 6.0

Dim success As Long
success = 0

' Azure Blob Service Example: Get Container User-Defined Metadata
' See also: https://msdn.microsoft.com/en-us/library/azure/ee691976.aspx

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

Dim rest As New ChilkatRest

' Connect to the Azure Storage Blob Service
Dim bTls As Long
bTls = 1
Dim port As Long
port = 443
Dim bAutoReconnect As Long
bAutoReconnect = 1
' In this example, the storage account name is "chilkat".
success = rest.Connect("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect)
If (success <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

' Provide Azure Cloud credentials for the REST call.
Dim azAuth As New ChilkatAuthAzureStorage
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)

' 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 no response body.
' In this example, we are getting the metadata of the container named "mycontainer".
Dim responseStr As String
responseStr = rest.FullRequestNoBody("GET","/mycontainer?restype=container&comp=metadata")
If (rest.LastMethodSuccess <> 1) Then
    Debug.Print rest.LastErrorText
    Exit Sub
End If

' When successful, the Azure Storage service will respond with a 200 response status code,
' with no response body.

If (rest.ResponseStatusCode <> 200) Then
    ' Examine the request/response to see what happened.
    Debug.Print "response status code = " & rest.ResponseStatusCode
    Debug.Print "response status text = " & rest.ResponseStatusText
    Debug.Print "response header: " & rest.ResponseHeader
    Debug.Print "response body (if any): " & responseStr
    Debug.Print "---"
    Debug.Print "LastRequestStartLine: " & rest.LastRequestStartLine
    Debug.Print "LastRequestHeader: " & rest.LastRequestHeader
    Exit Sub
End If

' The user-defined metadata is located in the response header.
' The full response header can be obtained like this:
Debug.Print "response header: " & rest.ResponseHeader
Debug.Print "--"

' Metadata headers begin with "x-ms-meta-"
' Individual response header fields can be retrieved like this:
Debug.Print "x-ms-meta-Category: " & rest.ResponseHdrByName("x-ms-meta-Category")
Debug.Print "x-ms-meta-Resolution: " & rest.ResponseHdrByName("x-ms-meta-Resolution")

Debug.Print "Success."