private async Task InitAsync(IDirectory rootDir)
{
while (true)
{
var awaitTask = rootDir.AwaitChange("*.md", Duration.FromHours(1));
var files = await rootDir.ListFilesAsync().ConfigureAwait(_th);
var postList = new List <Post>();
foreach (var file in files.Where(x => x.Id.EndsWith(".md")))
{
try
{
using (var content = await rootDir.ReadAsync(file.Id).ConfigureAwait(_th))
{
var post = await Post.CreateAsync(_th, _time, content).ConfigureAwait(_th);
postList.Add(post);
}
}
catch (Exception e)
{
// TODO: Use logging.
Console.WriteLine();
Console.WriteLine($"Error load blog post: '{file.Id}'");
Console.WriteLine(e);
Console.WriteLine();
}
}
var posts = postList.Where(x => x != null).ToDictionary(x => x.Id);
Interlocked.Exchange(ref _posts, posts);
_initTcs.TrySetResult(0);
await awaitTask.ConfigureAwait(_th);
}
}
public static async Task <bool> AwaitChange(this IDirectory dir, string filter, Duration timeout, CancellationToken ct = default)
{
var th = dir.TaskHelper;
using (var cts = CancellationTokenSource.CreateLinkedTokenSource(ct))
{
var timeoutTask = dir.TaskHelper.Delay(timeout, cts.Token);
var changeTask = dir.AwaitChange(filter, cts.Token);
var task = await th.WhenAny(new [] { timeoutTask, changeTask }).ConfigureAwait(th);
cts.Cancel();
ct.ThrowIfCancellationRequested();
return(task == timeoutTask);
}
}
