/// <summary>
/// 开始下载，若获取大小失败，则会抛出异常
/// </summary>
public async ValueTask DownloadAsync(CancellationToken token)
{
StatusSubject.OnNext(@"正在获取下载文件大小...");
FileSize = await GetContentLengthAsync(token); //总大小
TempDir = EnsureDirectory(TempDir);
var list = GetFileRangeList();
var opQueue = new OperationQueue(1);
Current = 0;
Last = 0;
try
{
using var speedMonitor = CreateSpeedMonitor();
StatusSubject.OnNext(@"正在下载...");
await list.Select(info =>
// ReSharper disable once AccessToDisposedClosure
opQueue.Enqueue(1, () => GetStreamAsync(info, token))
.ToObservable()
.SelectMany(res => WriteToFileAsync(res.Item1, res.Item2, token))
).Merge();
StatusSubject.OnNext(@"下载完成，正在合并文件...");
Current = 0;
await MergeFilesAsync(list, token);
}
catch (OperationCanceledException)
{
StatusSubject.OnNext(@"下载已取消");
throw;
}
catch (Exception ex)
{
_logger.LogError(ex, @"下载出错");
StatusSubject.OnNext(@"下载出错");
}
finally
{
await opQueue.ShutdownQueue();
opQueue.Dispose();
Task.Run(async() =>
{
foreach (var range in list)
{
await DeleteFileWithRetryAsync(range.FileName);
}
}, CancellationToken.None).NoWarning();
}
}
public Subject(int id, Person person, bool coronatestPositive, DateTime coronaTest, Symptoms symtoms, DateTime firstSigns, string extraInformation, StatusSubject statusSubject, string dossierNr)
{
Id = id;
Person = person;
CoronatTstPositive = coronatestPositive;
CoronaTest = coronaTest;
Symtoms = symtoms;
FirstSigns = firstSigns;
ExtraInformation = extraInformation;
StatusSubject = statusSubject;
DossierNr = dossierNr;
}
/// <summary>
/// Initializes a new instance of the <see cref="ProjectionBase{TState}"/> class.
/// </summary>
/// <param name="eventStore">Event store service</param>
/// <param name="log">Log service</param>
/// <param name="activeTimeline">Timeline service</param>
/// <param name="streamLocator">Stream locator</param>
public ProjectionBase(IEventStore <IAggregate> eventStore, ILog log, ITimeline activeTimeline, IStreamLocator streamLocator)
{
EventStore = eventStore;
Log = log;
ActiveTimeline = activeTimeline;
_streamLocator = streamLocator;
CancellationSource = new RepeatableCancellationTokenSource();
_start = new Lazy <Task>(() => Task.Run(Start));
var options = new DataflowOptions {
RecommendedParallelismIfMultiThreaded = 1
};
Build = new BuildFlow(options, this);
StatusSubject.Where(s => s != Sleeping)
.Subscribe(s => Log?.Info($"[{Timeline}]{GetType().GetFriendlyName()}/{RuntimeHelpers.GetHashCode(this)}/ : {s.ToString()}"));
}
