/// <summary>
/// Returns a current Azure state for the given resource (config).
/// </summary>
/// <typeparam name="TModel"></typeparam>
/// <param name="config"></param>
/// <param name="client"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public static async Task <IState> GetStateAsync <TModel>(
this ResourceConfig <TModel> config,
IClient client,
CancellationToken cancellationToken)
where TModel : class
{
var context = new StateOperationContext(client, cancellationToken);
await context.GetStateAsyncDispatch(config);
return(context.Result);
}
public Context(
StateOperationContext operationContext,
IState target,
IShouldProcess shouldProcess,
IProgressReport progressReport,
ProgressMap progressMap)
{
_OperationContext = operationContext;
_Target = target;
_ShouldProcess = shouldProcess;
_ProgressReport = progressReport;
_ProgressMap = progressMap;
}
/// <summary>
///
/// </summary>
/// <param name="operationContext">a state operation context.</param>
/// <param name="target">An Azure target state.</param>
/// <param name="shouldProcess">A 'should process' interface</param>
/// <param name="reportTaskProgress">A callback to report progress.</param>
/// <param name="progressMap">Task progress information.</param>
public Context(
StateOperationContext operationContext,
IState target,
IShouldProcess shouldProcess,
Action <ITaskProgress> reportTaskProgress,
ProgressMap progressMap)
{
_OperationContext = operationContext;
_Target = target;
_ShouldProcess = shouldProcess;
_ReportTaskProgress = reportTaskProgress;
_ProgressMap = progressMap;
}
static async Task GetStateAsync <TModel>(
this StateOperationContext context, ResourceConfig <TModel> config)
where TModel : class
=> await context.GetOrAdd(
config,
async() =>
{
var info = await config.GetAsync(context.Client, context.CancellationToken);
// Get state of dependencies if the resource doesn't exist
if (info == null)
{
var tasks = config
.GetResourceDependencies()
.Select(context.GetStateAsyncDispatch);
await Task.WhenAll(tasks);
}
return(info);
});
static Task GetStateAsyncDispatch(
this StateOperationContext context, IResourceConfig config)
=> config.Accept(new GetStateAsyncVisitor(), context);