public CloudFolderEvents(CloudFolderFileSystem fileSystem)
{
if (fileSystem == null)
{
throw new ArgumentNullException(nameof(fileSystem));
}
_fileSystem = fileSystem;
// build SignalR connection
_connection = new HubConnectionBuilder()
.WithUrl(WebApi.RootUrl + "events")
.WithAutomaticReconnect()
.Build();
_connection.Closed += async(error) =>
{
_fileSystem.Logger?.Log(TraceLevel.Warning, "Server events closed. Error: " + error?.Message + " Restart: " + _started);
// restart?
if (_started)
{
await Task.Delay(new Random().Next(0, 5) * 1000).ConfigureAwait(false);
await _connection.StartAsync().ConfigureAwait(false);
}
};
// must match server's IFileSystemEvents method signature
// Change(Guid id, Guid itemId, Guid parentId, WatcherChangeTypes types, DateTime creationTimeUtc, string oldName);
_connection.On <Guid, Guid, Guid, WatcherChangeTypes, DateTime, string>("Change", (id, itemId, parentId, type, dt, oldName) =>
{
_fileSystem.Logger?.Log(TraceLevel.Verbose, "id: " + id + " itemid: " + itemId + " parentId: " + parentId + " type: " + type + " oldName:" + oldName);
StateSyncEntry entry;
switch (type)
{
case WatcherChangeTypes.Deleted:
entry = ToEntry(itemId, parentId);
_fileSystem.OnEvent(new SyncFileSystemEventArgs(SyncFileSystemEventType.Deleted, dt, entry));
break;
case WatcherChangeTypes.Created:
entry = ToEntry(itemId, parentId);
_fileSystem.OnEvent(new SyncFileSystemEventArgs(SyncFileSystemEventType.Created, dt, entry));
break;
case WatcherChangeTypes.Changed:
entry = ToEntry(itemId, parentId);
_fileSystem.OnEvent(new SyncFileSystemEventArgs(SyncFileSystemEventType.Changed, dt, entry));
break;
case WatcherChangeTypes.Renamed:
entry = ToEntry(itemId, parentId);
var oldEntry = ToEntry(itemId, parentId);
oldEntry.FileName = oldName;
_fileSystem.OnEvent(new SyncFileSystemEventArgs(SyncFileSystemEventType.Moved, dt, entry, oldEntry));
break;
}
SetLastEventTime(dt);
});
}
