(Lianja) Azure Storage: List Blobs

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

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// 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.

loRest = createobject("CkRest")

// Connect to the Azure Storage Blob Service
llBTls = .T.
lnPort = 443
llBAutoReconnect = .T.
// In this example, the storage account name is "chilkat".
llSuccess = loRest.Connect("chilkat.blob.core.windows.net",lnPort,llBTls,llBAutoReconnect)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    return
endif

// Provide Azure Cloud credentials for the REST call.
loAzAuth = createobject("CkAuthAzureStorage")
loAzAuth.AccessKey = "AZURE_ACCESS_KEY"
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
loAzAuth.Account = "chilkat"
loAzAuth.Scheme = "SharedKey"
loAzAuth.Service = "Blob"
// This causes the "x-ms-version: 2020-08-04" header to be automatically added.
loAzAuth.XMsVersion = "2020-08-04"
llSuccess = loRest.SetAuthAzureStorage(loAzAuth)

// 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".
lcResponseStr = loRest.FullRequestNoBody("GET","/mycontainer?restype=container&comp=list")
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loRest
    release loAzAuth
    return
endif

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

if (loRest.ResponseStatusCode <> 200) then
    // Examine the request/response to see what happened.
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body (if any): " + lcResponseStr
    ? "---"
    ? "LastRequestStartLine: " + loRest.LastRequestStartLine
    ? "LastRequestHeader: " + loRest.LastRequestHeader
    release loRest
    release loAzAuth
    return
endif

// Load the XML response for parsing.
// An example of the response XML is shown below.
loXml = createobject("CkXml")
llSuccess = loXml.LoadXml(lcResponseStr)

? loXml.GetXml()

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

loLastMod = createobject("CkDateTime")

lnNumBlobs = loXml.NumChildrenAt("Blobs")
i = 0
do while i < lnNumBlobs
    ? "---- Blob " + str(i) + " ----"
    loXml.I = i
    ? "Name: " + loXml.GetChildContent("Blobs|Blob[i]|Name")
    ? "Content-Length: " + loXml.GetChildContent("Blobs|Blob[i]|Properties|Content-Length")
    ? "Content-Type: " + loXml.GetChildContent("Blobs|Blob[i]|Properties|Content-Type")
    ? "Content-MD5: " + loXml.GetChildContent("Blobs|Blob[i]|Properties|Content-MD5")
    ? "BlobType: " + loXml.GetChildContent("Blobs|Blob[i]|Properties|BlobType")
    ? "LeaseStatus: " + loXml.GetChildContent("Blobs|Blob[i]|Properties|LeaseStatus")
    loLastMod.SetFromRfc822(loXml.GetChildContent("Blobs|Blob[i]|Properties|Last-Modified"))
    loDt = loLastMod.GetDtObj(.T.)
    ? "Last-Modified YMD: " + str(loDt.Year) + "," + str(loDt.Month) + "," + str(loDt.Day)
    release loDt
    i = i + 1
enddo

? "-------------------------"

// 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"
lcLastModStr = loXml.ChilkatPath("/C/Name,helloWorld.txt|..|Properties|Last-Modified|*")
? "helloWorld.txt Last-Modified: " + lcLastModStr

? "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>
// 


release loRest
release loAzAuth
release loXml
release loLastMod