/// <summary>Constructs state for EventStoreCatchUpSubscription.</summary>
/// <param name="connection">The connection.</param>
/// <param name="log">The <see cref="T:ReactiveDomain.ILogger" /> to use.</param>
/// <param name="streamId">The stream name.</param>
/// <param name="userCredentials">User credentials for the operations.</param>
/// <param name="eventAppeared">Action invoked when events are received.</param>
/// <param name="liveProcessingStarted">Action invoked when the read phase finishes.</param>
/// <param name="subscriptionDropped">Action invoked if the subscription drops.</param>
/// <param name="settings">Settings for this subscription.</param>
protected CatchUpSubscription(
IStreamStoreConnection connection,
ILogger log,
string streamId,
UserCredentials userCredentials,
Func <CatchUpSubscription, RecordedEvent, Task> eventAppeared,
Action <CatchUpSubscription> liveProcessingStarted,
Action <CatchUpSubscription, SubscriptionDropReason, Exception> subscriptionDropped,
CatchUpSubscriptionSettings settings)
{
Ensure.NotNull(connection, nameof(connection));
Ensure.NotNull(log, nameof(log));
Ensure.NotNull(eventAppeared, nameof(eventAppeared));
_connection = connection;
Log = log;
StreamId = string.IsNullOrEmpty(streamId) ? string.Empty : streamId;
_userCredentials = userCredentials;
ReadBatchSize = settings.ReadBatchSize;
MaxPushQueueSize = settings.MaxLiveQueueSize;
EventAppeared = eventAppeared;
_liveProcessingStarted = liveProcessingStarted;
_subscriptionDropped = subscriptionDropped;
Verbose = settings.VerboseLogging;
SubscriptionName = settings.SubscriptionName ?? string.Empty;
}
internal StreamCatchUpSubscription(IStreamStoreConnection connection, ILogger log, string streamId, long?fromEventNumberExclusive, UserCredentials userCredentials, Func <CatchUpSubscription, RecordedEvent, Task> eventAppeared, Action <CatchUpSubscription> liveProcessingStarted, Action <CatchUpSubscription, SubscriptionDropReason, Exception> subscriptionDropped, CatchUpSubscriptionSettings settings)
: base(connection, log, streamId, userCredentials, eventAppeared, liveProcessingStarted, subscriptionDropped, settings)
{
Ensure.NotNullOrEmpty(streamId, nameof(streamId));
long?nullable = fromEventNumberExclusive;
_lastProcessedEventNumber = nullable ?? -1L;
nullable = fromEventNumberExclusive;
_nextReadEventNumber = nullable ?? 0L;
}
