Go

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. Go

    success := false

    // 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.

    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: 2021-08-06" header to be automatically added.
    azAuth.SetXMsVersion("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".
    responseStr := rest.FullRequestNoBody("GET","/mycontainer?restype=container&comp=metadata")
    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 no 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
    }

    // The user-defined metadata is located in the response header.
    // The full response header can be obtained like this:
    fmt.Println("response header: ", rest.ResponseHeader())
    fmt.Println("--")

    // Metadata headers begin with "x-ms-meta-"
    // Individual response header fields can be retrieved like this:
    fmt.Println("x-ms-meta-Category: ", *rest.ResponseHdrByName("x-ms-meta-Category"))
    fmt.Println("x-ms-meta-Resolution: ", *rest.ResponseHdrByName("x-ms-meta-Resolution"))

    fmt.Println("Success.")

    rest.DisposeRest()
    azAuth.DisposeAuthAzureStorage()