/// <summary>
/// Perform an action when configuration changes. Note this requires configuration sources to be added with
/// `reloadOnChange` enabled
/// </summary>
/// <param name="config">Configuration to watch for changes</param>
/// <param name="action">Action to perform when <paramref name="config"/> is changed</param>
public static void OnChange(this IConfiguration config, Action action)
{
// IConfiguration's change detection is based on FileSystemWatcher, which will fire multiple change
// events for each change - Microsoft's code is buggy in that it doesn't bother to debounce/dedupe
// https://github.com/aspnet/AspNetCore/issues/2542
var debouncer = new Debouncer(TimeSpan.FromSeconds(2));
ChangeToken.OnChange <object>(config.GetReloadToken, _ => debouncer.Debounce(action), null);
}
public CompressedFileProvider(string filePath, string rootFolder)
{
var debouncer = new Debouncer(TimeSpan.FromSeconds(2));
this.filePath = filePath.ThrowIfEmpty(nameof(filePath));
this.rootFolder = rootFolder.ThrowIfNull(nameof(rootFolder));
this.cache = new ConcurrentDictionary <string, IFileInfo>();
ProcessZip();
var actualPath = Path.GetFullPath(filePath);
fileWatcher = new FileSystemWatcher();
fileWatcher.Path = Path.GetDirectoryName(actualPath);
fileWatcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite | NotifyFilters.FileName;
fileWatcher.Filter = Path.GetFileName(actualPath);
fileWatcher.Changed += (s, e) => debouncer.Debounce(() => ProcessZip());
fileWatcher.Created += (s, e) => debouncer.Debounce(() => ProcessZip());
fileWatcher.Renamed += (s, e) => debouncer.Debounce(() => ProcessZip());
fileWatcher.EnableRaisingEvents = true;
physicalFileProvider = new PhysicalFileProvider(fileWatcher.Path);
}