/// <summary>
/// When you want to create, update, or delete AWS WAF objects, get a change token and
/// include the change token in the create, update, or delete request. Change tokens ensure
/// that your application doesn't submit conflicting requests to AWS WAF.
///
///
/// <para>
/// Each create, update, or delete request must use a unique change token. If your application
/// submits a <code>GetChangeToken</code> request and then submits a second <code>GetChangeToken</code>
/// request before submitting a create, update, or delete request, the second <code>GetChangeToken</code>
/// request returns the same value as the first <code>GetChangeToken</code> request.
/// </para>
///
/// <para>
/// When you use a change token in a create, update, or delete request, the status of
/// the change token changes to <code>PENDING</code>, which indicates that AWS WAF is
/// propagating the change to all AWS WAF servers. Use <code>GetChangeTokenStatus</code>
/// to determine the status of your change token.
/// </para>
/// </summary>
/// <param name="request">Container for the necessary parameters to execute the GetChangeToken service method.</param>
///
/// <returns>The response from the GetChangeToken service method, as returned by WAF.</returns>
/// <exception cref="Amazon.WAF.Model.WAFInternalErrorException">
/// The operation failed because of a system problem, even though the request was valid.
/// Retry your request.
/// </exception>
public GetChangeTokenResponse GetChangeToken(GetChangeTokenRequest request)
{
var marshaller = new GetChangeTokenRequestMarshaller();
var unmarshaller = GetChangeTokenResponseUnmarshaller.Instance;
return Invoke<GetChangeTokenRequest,GetChangeTokenResponse>(request, marshaller, unmarshaller);
}
/// <summary>
/// Initiates the asynchronous execution of the GetChangeToken operation.
/// </summary>
///
/// <param name="request">Container for the necessary parameters to execute the GetChangeToken operation on AmazonWAFClient.</param>
/// <param name="callback">An AsyncCallback delegate that is invoked when the operation completes.</param>
/// <param name="state">A user-defined state object that is passed to the callback procedure. Retrieve this object from within the callback
/// procedure using the AsyncState property.</param>
///
/// <returns>An IAsyncResult that can be used to poll or wait for results, or both; this value is also needed when invoking EndGetChangeToken
/// operation.</returns>
public IAsyncResult BeginGetChangeToken(GetChangeTokenRequest request, AsyncCallback callback, object state)
{
var marshaller = new GetChangeTokenRequestMarshaller();
var unmarshaller = GetChangeTokenResponseUnmarshaller.Instance;
return BeginInvoke<GetChangeTokenRequest>(request, marshaller, unmarshaller,
callback, state);
}
/// <summary>
/// Initiates the asynchronous execution of the GetChangeToken operation.
/// </summary>
///
/// <param name="request">Container for the necessary parameters to execute the GetChangeToken operation.</param>
/// <param name="cancellationToken">
/// A cancellation token that can be used by other objects or threads to receive notice of cancellation.
/// </param>
/// <returns>The task object representing the asynchronous operation.</returns>
public Task<GetChangeTokenResponse> GetChangeTokenAsync(GetChangeTokenRequest request, System.Threading.CancellationToken cancellationToken = default(CancellationToken))
{
var marshaller = new GetChangeTokenRequestMarshaller();
var unmarshaller = GetChangeTokenResponseUnmarshaller.Instance;
return InvokeAsync<GetChangeTokenRequest,GetChangeTokenResponse>(request, marshaller,
unmarshaller, cancellationToken);
}
