(PowerBuilder) Azure Storage: List Blobs

Azure Storage Blob Service REST API: Sample code to fetch the list of blobs in the specified container.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Rest
integer li_BTls
integer li_Port
integer li_BAutoReconnect
integer li_Success
oleobject loo_AzAuth
string ls_ResponseStr
oleobject loo_Xml
oleobject loo_LastMod
integer li_NumBlobs
integer i
oleobject loo_Dt
string ls_LastModStr

// 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.

loo_Rest = create oleobject
// Use "Chilkat_9_5_0.Rest" for versions of Chilkat < 10.0.0
li_rc = loo_Rest.ConnectToNewObject("Chilkat.Rest")
if li_rc < 0 then
    destroy loo_Rest
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Connect to the Azure Storage Blob Service
li_BTls = 1
li_Port = 443
li_BAutoReconnect = 1
// In this example, the storage account name is "chilkat".
li_Success = loo_Rest.Connect("chilkat.blob.core.windows.net",li_Port,li_BTls,li_BAutoReconnect)
if li_Success <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    return
end if

// Provide Azure Cloud credentials for the REST call.
loo_AzAuth = create oleobject
// Use "Chilkat_9_5_0.AuthAzureStorage" for versions of Chilkat < 10.0.0
li_rc = loo_AzAuth.ConnectToNewObject("Chilkat.AuthAzureStorage")

loo_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).
loo_AzAuth.Account = "chilkat"
loo_AzAuth.Scheme = "SharedKey"
loo_AzAuth.Service = "Blob"
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
loo_AzAuth.XMsVersion = "2021-08-06"
li_Success = loo_Rest.SetAuthAzureStorage(loo_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".
ls_ResponseStr = loo_Rest.FullRequestNoBody("GET","/mycontainer?restype=container&comp=list")
if loo_Rest.LastMethodSuccess <> 1 then
    Write-Debug loo_Rest.LastErrorText
    destroy loo_Rest
    destroy loo_AzAuth
    return
end if

// When successful, the Azure Storage service will respond with a 200 response status code,
// with an XML response body.

if loo_Rest.ResponseStatusCode <> 200 then
    // Examine the request/response to see what happened.
    Write-Debug "response status code = " + string(loo_Rest.ResponseStatusCode)
    Write-Debug "response status text = " + loo_Rest.ResponseStatusText
    Write-Debug "response header: " + loo_Rest.ResponseHeader
    Write-Debug "response body (if any): " + ls_ResponseStr
    Write-Debug "---"
    Write-Debug "LastRequestStartLine: " + loo_Rest.LastRequestStartLine
    Write-Debug "LastRequestHeader: " + loo_Rest.LastRequestHeader
    destroy loo_Rest
    destroy loo_AzAuth
    return
end if

// Load the XML response for parsing.
// An example of the response XML is shown below.
loo_Xml = create oleobject
// Use "Chilkat_9_5_0.Xml" for versions of Chilkat < 10.0.0
li_rc = loo_Xml.ConnectToNewObject("Chilkat.Xml")

li_Success = loo_Xml.LoadXml(ls_ResponseStr)

Write-Debug loo_Xml.GetXml()

// Let's iterate over the blobs...

loo_LastMod = create oleobject
// Use "Chilkat_9_5_0.CkDateTime" for versions of Chilkat < 10.0.0
li_rc = loo_LastMod.ConnectToNewObject("Chilkat.CkDateTime")

li_NumBlobs = loo_Xml.NumChildrenAt("Blobs")
i = 0
do while i < li_NumBlobs
    Write-Debug "---- Blob " + string(i) + " ----"
    loo_Xml.I = i
    Write-Debug "Name: " + loo_Xml.GetChildContent("Blobs|Blob[i]|Name")
    Write-Debug "Content-Length: " + loo_Xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Length")
    Write-Debug "Content-Type: " + loo_Xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Type")
    Write-Debug "Content-MD5: " + loo_Xml.GetChildContent("Blobs|Blob[i]|Properties|Content-MD5")
    Write-Debug "BlobType: " + loo_Xml.GetChildContent("Blobs|Blob[i]|Properties|BlobType")
    Write-Debug "LeaseStatus: " + loo_Xml.GetChildContent("Blobs|Blob[i]|Properties|LeaseStatus")
    loo_LastMod.SetFromRfc822(loo_Xml.GetChildContent("Blobs|Blob[i]|Properties|Last-Modified"))
    loo_Dt = loo_LastMod.GetDtObj(1)
    Write-Debug "Last-Modified YMD: " + string(loo_Dt.Year) + "," + string(loo_Dt.Month) + "," + string(loo_Dt.Day)
    destroy loo_Dt
    i = i + 1
loop

Write-Debug "-------------------------"

// 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"
ls_LastModStr = loo_Xml.ChilkatPath("/C/Name,helloWorld.txt|..|Properties|Last-Modified|*")
Write-Debug "helloWorld.txt Last-Modified: " + ls_LastModStr

Write-Debug "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>
// 


destroy loo_Rest
destroy loo_AzAuth
destroy loo_Xml
destroy loo_LastMod