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Azure Storage: List Blobs
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Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.Chilkat B4X Downloads
Dim success As Boolean = False
' 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.
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 = False 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)
' 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".
Dim responseStr As String = rest.FullRequestNoBody("GET", "/mycontainer?restype=container&comp=list")
If rest.LastMethodSuccess = False Then
Log(rest.LastErrorText)
Return
End If
' When successful, the Azure Storage service will respond with a 200 response status code,
' with an XML response 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.
' An example of the response XML is shown below.
Dim xml As ChilkatXml
xml.Initialize
success = xml.LoadXml(responseStr)
Log(xml.GetXml)
' Let's iterate over the blobs...
Dim lastMod As ChilkatDateTime
lastMod.Initialize
Dim numBlobs As Int = xml.NumChildrenAt("Blobs")
Dim i As Int = 0
Dim dt As ChilkatDtObj
dt.Initialize
Do While i < numBlobs
Log("---- Blob " & i & " ----")
xml.I = i
Log("Name: " & xml.GetChildContent("Blobs|Blob[i]|Name"))
Log("Content-Length: " & xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Length"))
Log("Content-Type: " & xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Type"))
Log("Content-MD5: " & xml.GetChildContent("Blobs|Blob[i]|Properties|Content-MD5"))
Log("BlobType: " & xml.GetChildContent("Blobs|Blob[i]|Properties|BlobType"))
Log("LeaseStatus: " & xml.GetChildContent("Blobs|Blob[i]|Properties|LeaseStatus"))
lastMod.SetFromRfc822(xml.GetChildContent("Blobs|Blob[i]|Properties|Last-Modified"))
lastMod.ToDtObj(True, dt)
Log("Last-Modified YMD: " & dt.Year & "," & dt.Month & "," & dt.Day)
i = i + 1
Loop
Log("-------------------------")
' 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"
Dim lastModStr As String = xml.ChilkatPath("/C/Name,helloWorld.txt|..|Properties|Last-Modified|*")
Log("helloWorld.txt Last-Modified: " & lastModStr)
Log("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>
'