public void Run(CancellationToken token)
{
var connectFailure = 0;
while (!token.IsCancellationRequested)
{
try {
var localStoreIsEmpty = _store.GetCurrentVersion() == 0;
if (localStoreIsEmpty)
{
token.WaitHandle.WaitOne(TimeSpan.FromSeconds(30));
continue;
}
_log.Information("Starting ES replication to {stream}", _streamName);
using (var conn = new CloudClient(_config.Host, _config.Login, _config.Password)) {
connectFailure = 0;
var lastReplicatedEvent = _checkpoint.GetOrInitPosition();
while (!token.IsCancellationRequested)
{
if (lastReplicatedEvent == _store.GetCurrentVersion())
{
// no work to do, so sleep and continue
token.WaitHandle.WaitOne(500);
continue;
}
var keys = _store.ReadRecords(lastReplicatedEvent, 1000).ToList();
var remoteEvents = keys.Select(MessageToWrite).ToList();
conn.PostMessagesAsync(_streamName, remoteEvents).Wait(token);
lastReplicatedEvent = keys.Last().StoreVersion;
_checkpoint.Update(lastReplicatedEvent);
}
}
}
catch (Exception ex) {
if (connectFailure == 0)
{
_log.Error(ex, "Write connection failure");
}
connectFailure += 1;
token.WaitHandle.WaitOne(TimeSpan.FromMinutes(1));
}
}
}
public long GetVersion()
{
return(_appendOnlyStore.GetCurrentVersion());
}