void SyncInternal(Action <string> logger)
{
try
{
var next = _cache.GetCurrentVersion();
while (true)
{
long next1 = next;
var items = Retry(() => _remote.ReadRecords(next1, BatchSize).ToArray(), logger);
if (items.Length == 0)
{
break;
}
// Check that versions are contiguous
var nextCopy = next;
var versions = items
.Select((r, i) => new { Actual = r.Version, Expected = nextCopy + 1 + i })
.ToArray();
if (!versions.All(v => v.Actual == v.Expected))
{
throw new InvalidOperationException("Versions are not contiguous.");
}
next = items.Max(m => m.Version);
_cache.AppendNonAtomic(items);
logger(string.Format("Downloaded {0} records", items.Length));
if (items.Length <= 4)
{
break;
}
}
}
catch (Exception ex)
{
logger(ex.Message);
Trace.WriteLine(ex);
}
}
public void Can_continue_after_recreation()
{
foreach (var b in _batch)
{
_stream.TryAppend(b);
}
var version = _stream.GetCurrentVersion();
_stream = null;
FreeResources();
_stream = InitializeAndGetTapeStorage();
_stream.TryAppend(_batch[0]);
var readings = _stream.ReadRecords(version, 1).ToArray();
Assert.AreEqual(1, readings.Length, "Number of records mismatch");
Assert.Greater(readings[0].Version, version, "Version mismatch");
CollectionAssert.AreEqual(_batch[0], readings[0].Data, "Data mismatch");
}
public void Can_continue_after_recreation()
{
foreach (var b in _batch)
{
_stream.TryAppend(b);
}
var version = _stream.GetCurrentVersion();
_stream = null;
FreeResources();
_stream = InitializeAndGetTapeStorage();
_stream.TryAppend(_batch[0]);
var readings = _stream.ReadRecords(version, 1).ToArray();
Assert.AreEqual(1, readings.Length, "Number of records mismatch");
Assert.Greater(readings[0].Version, version, "Version mismatch");
CollectionAssert.AreEqual(_batch[0], readings[0].Data, "Data mismatch");
}
static void Observe(ITapeStream tapes, RedirectToDynamicEvent wire)
{
var date = DateTime.MinValue;
var watch = Stopwatch.StartNew();
foreach (var record in tapes.ReadRecords(0, int.MaxValue))
{
var env = Streamer.ReadAsEnvelopeData(record.Data);
if (date.Month != env.CreatedOnUtc.Month)
{
date = env.CreatedOnUtc;
SystemObserver.Notify("Observing {0:yyyy-MM-dd} {1}", date, Math.Round(watch.Elapsed.TotalSeconds, 2));
watch.Restart();
}
foreach (var item in env.Items)
{
var e = item.Content as IEvent;
if (e != null)
{
wire.InvokeEvent(e);
}
}
}
}
