(Go) How to Generate an Azure Service Bus Shared Access Signature (SAS)

Demonstrates generating and using an Azure Service Bus Shared Access Signature (SAS).

Note: This example requires Chilkat v9.5.0.65 or greater.

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    // Note: Requires Chilkat v9.5.0.65 or greater.

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // -------------------------------------------------------------------
    // Create a Shared Access Signature (SAS) token for Azure Service Bus.
    // -------------------------------------------------------------------

    authSas := chilkat.NewAuthAzureSAS()
    authSas.SetAccessKey("AzureServiceBus_PrimaryKey")

    // The SAS token for Service Bus will look like this:
    // (The order of params will be different.  The order does not matter.)
    // sig=<signature-string>&se=<expiry>&skn=<keyName>&sr=<URL-encoded-resourceURI>

    // Specify the format of the string to sign.
    authSas.SetStringToSign("resourceURI,expiry")

    // Create an expiry to 30 days in the future.
    dtExpiry := chilkat.NewCkDateTime()
    dtExpiry.SetFromCurrentSystemTime()
    dtExpiry.AddDays(30)
    authSas.SetTokenParam("expiry","se",*dtExpiry.GetAsUnixTimeStr(true))

    // Set the skn (keyname)
    // This example uses the key "RootManageSharedAccessKey".  This give full access.
    // In a typical scenario, you would create a new Azure key (for the service bus)
    // in the Azure portal, such that the key has limited permissions.  This would
    // allow you to give the SAS token to others for specific access for some period of time.
    authSas.SetTokenParam("keyName","skn","RootManageSharedAccessKey")

    // Set the URL-encoded-resourceURI
    sbResourceUri := chilkat.NewStringBuilder()
    sbResourceUri.Append("https://<yournamespace>.servicebus.windows.net/")
    sbResourceUri.Encode("url","utf-8")
    authSas.SetTokenParam("resourceURI","sr",*sbResourceUri.GetAsString())

    // Generate the SAS token.
    sasToken := authSas.GenerateToken()
    if authSas.LastMethodSuccess() != true {
        fmt.Println(authSas.LastErrorText())
        authSas.DisposeAuthAzureSAS()
        dtExpiry.DisposeCkDateTime()
        sbResourceUri.DisposeStringBuilder()
        return
    }

    fmt.Println("SAS token: ", *sasToken)

    // Save the SAS token to a file.
    // We can then use this pre-generated token for future Service Bus operations.
    fac := chilkat.NewFileAccess()
    fac.WriteEntireTextFile("qa_data/tokens/serviceBusSas.txt",*sasToken,"utf-8",false)

    authSas.DisposeAuthAzureSAS()
    dtExpiry.DisposeCkDateTime()
    sbResourceUri.DisposeStringBuilder()
    fac.DisposeFileAccess()