(Go) 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.

    rest := chilkat.NewRest()

    // Connect to the Azure Storage Blob Service
    bTls := true
    port := 443
    bAutoReconnect := true
    // In this example, the storage account name is "chilkat".
    success := rest.Connect("chilkat.blob.core.windows.net",port,bTls,bAutoReconnect)
    if success != true {
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        return
    }

    // Provide Azure Cloud credentials for the REST call.
    azAuth := chilkat.NewAuthAzureStorage()
    azAuth.SetAccessKey("AZURE_ACCESS_KEY")
    // The account name used here should match the 1st part of the domain passed in the call to Connect (above).
    azAuth.SetAccount("chilkat")
    azAuth.SetScheme("SharedKey")
    azAuth.SetService("Blob")
    // This causes the "x-ms-version: 2020-08-04" header to be automatically added.
    azAuth.SetXMsVersion("2020-08-04")
    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".
    responseStr := rest.FullRequestNoBody("GET","/mycontainer?restype=container&comp=list")
    if rest.LastMethodSuccess() != true {
        fmt.Println(rest.LastErrorText())
        rest.DisposeRest()
        azAuth.DisposeAuthAzureStorage()
        return
    }

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

    if rest.ResponseStatusCode() != 200 {
        // Examine the request/response to see what happened.
        fmt.Println("response status code = ", rest.ResponseStatusCode())
        fmt.Println("response status text = ", rest.ResponseStatusText())
        fmt.Println("response header: ", rest.ResponseHeader())
        fmt.Println("response body (if any): ", *responseStr)
        fmt.Println("---")
        fmt.Println("LastRequestStartLine: ", rest.LastRequestStartLine())
        fmt.Println("LastRequestHeader: ", rest.LastRequestHeader())
        rest.DisposeRest()
        azAuth.DisposeAuthAzureStorage()
        return
    }

    // Load the XML response for parsing.
    // An example of the response XML is shown below.
    xml := chilkat.NewXml()
    success = xml.LoadXml(*responseStr)

    fmt.Println(*xml.GetXml())

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

    lastMod := chilkat.NewCkDateTime()

    numBlobs := xml.NumChildrenAt("Blobs")
    i := 0
    for i < numBlobs {
        fmt.Println("---- Blob ", i, " ----")
        xml.SetI(i)
        fmt.Println("Name: ", *xml.GetChildContent("Blobs|Blob[i]|Name"))
        fmt.Println("Content-Length: ", *xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Length"))
        fmt.Println("Content-Type: ", *xml.GetChildContent("Blobs|Blob[i]|Properties|Content-Type"))
        fmt.Println("Content-MD5: ", *xml.GetChildContent("Blobs|Blob[i]|Properties|Content-MD5"))
        fmt.Println("BlobType: ", *xml.GetChildContent("Blobs|Blob[i]|Properties|BlobType"))
        fmt.Println("LeaseStatus: ", *xml.GetChildContent("Blobs|Blob[i]|Properties|LeaseStatus"))
        lastMod.SetFromRfc822(*xml.GetChildContent("Blobs|Blob[i]|Properties|Last-Modified"))
        dt := lastMod.GetDtObj(true)
        fmt.Println("Last-Modified YMD: ", dt.Year(), ",", dt.Month(), ",", dt.Day())
        dt.DisposeDtObj()
        i = i + 1
    }

    fmt.Println("-------------------------")

    // 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"
    lastModStr := xml.ChilkatPath("/C/Name,helloWorld.txt|..|Properties|Last-Modified|*")
    fmt.Println("helloWorld.txt Last-Modified: ", *lastModStr)

    fmt.Println("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>
    // 

    rest.DisposeRest()
    azAuth.DisposeAuthAzureStorage()
    xml.DisposeXml()
    lastMod.DisposeCkDateTime()