protected virtual async Task <IEventStream> GetStreamAsync(ICommitTrailStore commitLogs)
{
var stream = new EventStream(
this._credentials, this._tenant,
this._streamName, commitLogs, this._loggerFactory);
await stream.Init(false);
return(stream);
}
public EventStream(
StorageCredentials credentials,
Tenant tenant,
string streamName,
ICommitTrailStore commitLogs,
ILoggerFactory loggerFactory)
{
Ensure.ArgumentNotNullOrWhiteSpace(streamName, nameof(streamName));
Ensure.ArgumentNotNull(tenant, nameof(tenant));
Ensure.ArgumentNotNull(credentials, nameof(credentials));
Ensure.ArgumentNotNull(loggerFactory, nameof(loggerFactory));
Ensure.ArgumentNotNull(commitLogs, nameof(commitLogs));
this._streamName = streamName;
this._tenant = tenant;
this._credentials = credentials;
this._commitLogs = commitLogs;
this._logger = loggerFactory.CreateLogger <EventStream>();
}
private async Task <long> ConsumeEvents(
Action <IEnumerable <EventBase> > onEventReceived,
ICommitTrailStore commitLogs, ILeaseStore leaseStore, long recentCommitId, long offsetCommitId)
{
// we have commits to take care ...
var logs = (await commitLogs
.GetCommitsAsync(offsetCommitId, recentCommitId)
.ConfigureAwait(false))
.Where(log =>
log.StreamName.Equals(this._streamName, StringComparison.OrdinalIgnoreCase));
if (logs.Any())
{
var stream = await GetStreamAsync(commitLogs).ConfigureAwait(false);
var events = await stream.ReadEventsAsync(logs).ConfigureAwait(false);
onEventReceived(events);
await leaseStore.SetOffsetCommitIdAsync((offsetCommitId = recentCommitId));
}
return(offsetCommitId);
}