public byte[] ToPersistentByteArray()
{
D("Generating persistent byte array...");
return(Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(
new InnerCheckPoint()
{
Tasks = Tasks.Select(task => new KeyValuePair
<string, DownloadTask>(task.Key, task)).ToArray(),
Downloaders = Downloaders.Where(downloader =>
downloader.Status != DownloaderStatus.Completed &&
downloader.Status != DownloaderStatus.Disposed)
.Select(downloader =>
{
byte[] val = null;
if (downloader is IPersistable per)
{
try { val = per.ToPersistentByteArray(); } catch (Exception) { }
}
return new KeyValuePair <string, byte[]>(
downloader.DownloadTask.Key, val);
}).ToArray(),
Histories = Histories.ToArray(),
CacheManagerCheckPoint = coreCacheManager.ToPersistentByteArray(),
TorrentEngineCheckPoint = torrentProvider.ToPersistentByteArray()
}, new JsonSerializerSettings()
/// <summary>
/// Construct a CollectionBind from a source collection which
/// should be an ISyncableCollection to a destination collection.
/// It uses the caster when new object is required to be created
/// and uses the comparer to match existence objects in two
/// collections when resyncing.
/// </summary>
/// <param name="source">The source collection.</param>
/// <param name="destination">The destination collection.</param>
/// <param name="caster">The caster creates an object of type
/// <typeparamref name="T"/> from an object of type <typeparamref name="S"/>.
/// </param>
/// <param name="comparer">The comparer compares an object of type
/// <typeparamref name="T"/> with an object of type <typeparamref name="S"/>
/// and returns true if they are corresponding.</param>
public CollectionBind(
ISyncableEnumerable <S> source,
ICollection <T> destination,
Func <S, T> caster,
Func <S, T, bool> comparer)
{
Ensure.That(source, nameof(source)).IsNotNull();
Ensure.That(destination, nameof(destination)).IsNotNull();
Ensure.That(caster, nameof(caster)).IsNotNull();
Ensure.That(comparer, nameof(comparer)).IsNotNull();
Source = source;
Destination = destination;
Caster = caster;
Comparer = comparer;
}
