public async Task StartAsync(CancellationToken cancellationToken = default)
{
if (State.IsRunning)
{
_userOutput.WriteLine("Sync is already running.");
return;
}
State.IsRunning = true;
_previousHash = _deltaIndexService.LatestDeltaIndex().Cid;
_userOutput.WriteLine("Starting Sync...");
_scoredDeltaIndexRangeDisposable = _peerSyncManager.ScoredDeltaIndexRange.Subscribe(ProcessDeltaIndexRange);
_deltaHeightWatcher.Start();
await _peerSyncManager.WaitForPeersAsync(cancellationToken).ConfigureAwait(false);
var highestDeltaIndex = await _deltaHeightWatcher.GetHighestDeltaIndexAsync();
if (highestDeltaIndex == null || highestDeltaIndex.Height <= CurrentHighestDeltaIndexStored)
{
await Completed().ConfigureAwait(false);
return;
}
State.CurrentBlock = State.StartingBlock = CurrentHighestDeltaIndexStored;
State.HighestBlock = highestDeltaIndex.Height;
_peerSyncManager.Start();
Progress(CurrentHighestDeltaIndexStored, _rangeSize);
}
public async Task StartAsync_Should_Start_Sync()
{
_deltaHeightWatcher = Substitute.For <IDeltaHeightWatcher>();
_deltaHeightWatcher.GetHighestDeltaIndexAsync().Returns(new DeltaIndex {
Cid = ByteString.Empty, Height = 10000
});
var sync = new Synchroniser(new SyncState(), _peerSyncManager, _deltaCache, _deltaHeightWatcher, _deltaHashProvider, _deltaDfsReader,
_deltaIndexService, _mapperProvider, _userOutput, Substitute.For <ILogger>());
await sync.StartAsync(CancellationToken.None);
sync.State.IsRunning.Should().BeTrue();
}
public async Task StopAsync_Should_Log_If_Not_Running_Sync()
{
_deltaHeightWatcher = Substitute.For <IDeltaHeightWatcher>();
_deltaHeightWatcher.GetHighestDeltaIndexAsync().Returns(new DeltaIndex {
Cid = ByteString.Empty, Height = 10000
});
var sync = new Synchroniser(new SyncState(), _peerSyncManager, _deltaCache, _deltaHeightWatcher, _deltaHashProvider, _deltaDfsReader,
_deltaIndexService, _mapperProvider, _userOutput, Substitute.For <ILogger>());
await sync.StopAsync(CancellationToken.None);
_userOutput.Received(1).WriteLine("Sync is not currently running.");
sync.State.IsRunning.Should().BeFalse();
}