public StreamSubscription(IPublisher bus,
string streamName,
StreamRevision startRevision,
bool resolveLinks,
IPrincipal user,
IReadIndex readIndex,
CancellationToken cancellationToken)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
if (streamName == null)
{
throw new ArgumentNullException(nameof(streamName));
}
if (readIndex == null)
{
throw new ArgumentNullException(nameof(readIndex));
}
_bus = bus;
_streamName = streamName;
_nextRevision = startRevision;
_resolveLinks = resolveLinks;
_user = user;
_readIndex = readIndex;
_disposedTokenSource = new CancellationTokenSource();
_buffer = new ConcurrentQueue <ResolvedEvent>();
_tokenRegistration = cancellationToken.Register(_disposedTokenSource.Dispose);
}
public AllSubscriptionFiltered(IPublisher bus,
Position?startPosition,
bool resolveLinks,
IEventFilter eventFilter,
ClaimsPrincipal user,
bool requiresLeader,
IReadIndex readIndex,
uint?maxSearchWindow,
uint checkpointIntervalMultiplier,
Func <Position, Task> checkpointReached,
CancellationToken cancellationToken)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
if (eventFilter == null)
{
throw new ArgumentNullException(nameof(eventFilter));
}
if (readIndex == null)
{
throw new ArgumentNullException(nameof(readIndex));
}
if (checkpointReached == null)
{
throw new ArgumentNullException(nameof(checkpointReached));
}
if (checkpointIntervalMultiplier == 0)
{
throw new ArgumentOutOfRangeException(nameof(checkpointIntervalMultiplier));
}
_subscriptionId = Guid.NewGuid();
_bus = bus;
_resolveLinks = resolveLinks;
_eventFilter = eventFilter;
_user = user;
_requiresLeader = requiresLeader;
_readIndex = readIndex;
_maxSearchWindow = maxSearchWindow;
_checkpointIntervalMultiplier = checkpointIntervalMultiplier;
_checkpointReached = checkpointReached;
_cancellationToken = cancellationToken;
_subscriptionStarted = new TaskCompletionSource <bool>();
_subscriptionStarted.SetResult(true);
_inner = startPosition == Position.End
? (IStreamSubscription) new LiveStreamSubscription(_subscriptionId, _bus,
Position.FromInt64(_readIndex.LastIndexedPosition, _readIndex.LastIndexedPosition),
_resolveLinks, _eventFilter, _user, _requiresLeader, _maxSearchWindow,
_checkpointIntervalMultiplier, checkpointReached, _cancellationToken)
: new CatchupAllSubscription(_subscriptionId, bus, startPosition ?? Position.Start, resolveLinks,
_eventFilter, user, _requiresLeader, readIndex, _maxSearchWindow, _checkpointIntervalMultiplier, checkpointReached,
cancellationToken);
}
public AllSubscriptionFiltered(IPublisher bus,
Position position,
bool resolveLinks,
IEventFilter eventFilter,
IPrincipal user,
IReadIndex readIndex,
CancellationToken cancellationToken)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
if (readIndex == null)
{
throw new ArgumentNullException(nameof(readIndex));
}
if (eventFilter == null)
{
throw new ArgumentNullException(nameof(eventFilter));
}
_bus = bus;
_nextPosition = position;
_resolveLinks = resolveLinks;
_eventFilter = eventFilter;
_user = user;
_readIndex = readIndex;
_disposedTokenSource = new CancellationTokenSource();
_buffer = new ConcurrentQueue <ResolvedEvent>();
_tokenRegistration = cancellationToken.Register(_disposedTokenSource.Dispose);
}
public CatchupAllSubscription(Guid subscriptionId,
IPublisher bus,
Position position,
bool resolveLinks,
IEventFilter eventFilter,
ClaimsPrincipal user,
bool requiresLeader,
IReadIndex readIndex,
uint?maxWindowSize,
uint checkpointIntervalMultiplier,
Func <Position, Task> checkpointReached,
CancellationToken cancellationToken)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
if (eventFilter == null)
{
throw new ArgumentNullException(nameof(eventFilter));
}
if (readIndex == null)
{
throw new ArgumentNullException(nameof(readIndex));
}
if (checkpointReached == null)
{
throw new ArgumentNullException(nameof(checkpointReached));
}
if (checkpointIntervalMultiplier == 0)
{
throw new ArgumentOutOfRangeException(nameof(checkpointIntervalMultiplier));
}
_subscriptionId = subscriptionId;
_bus = bus;
_nextPosition = position == Position.End
? Position.FromInt64(readIndex.LastIndexedPosition, readIndex.LastIndexedPosition)
: position;
_startPosition = position == Position.End ? Position.Start : position;
_resolveLinks = resolveLinks;
_eventFilter = eventFilter;
_user = user;
_requiresLeader = requiresLeader;
_checkpointIntervalMultiplier = checkpointIntervalMultiplier;
_checkpointReached = checkpointReached;
_maxWindowSize = maxWindowSize ?? ReadBatchSize;
_disposedTokenSource = new CancellationTokenSource();
_buffer = new ConcurrentQueueWrapper <(ResolvedEvent, Position?)>();
_tokenRegistration = cancellationToken.Register(_disposedTokenSource.Dispose);
_currentPosition = _startPosition;
_checkpointInterval = 0;
Log.Information("Catch-up subscription {subscriptionId} to $all:{eventFilter} running...",
_subscriptionId, _eventFilter);
}
public CatchupStreamSubscription(Guid subscriptionId,
IPublisher bus,
string streamName,
StreamRevision startRevision,
bool resolveLinks,
ClaimsPrincipal user,
bool requiresLeader,
IReadIndex readIndex,
TaskCompletionSource <bool> subscriptionStarted,
CancellationToken cancellationToken)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
if (streamName == null)
{
throw new ArgumentNullException(nameof(streamName));
}
if (readIndex == null)
{
throw new ArgumentNullException(nameof(readIndex));
}
if (subscriptionStarted == null)
{
throw new ArgumentNullException(nameof(subscriptionStarted));
}
_subscriptionId = subscriptionId;
_bus = bus;
_streamName = streamName;
_nextRevision = startRevision == StreamRevision.End
? StreamRevision.FromInt64(readIndex.GetStreamLastEventNumber(_streamName) + 1)
: startRevision;
_startRevision = startRevision == StreamRevision.End ? StreamRevision.Start : startRevision;
_resolveLinks = resolveLinks;
_user = user;
_requiresLeader = requiresLeader;
var subscriptionStarted1 = subscriptionStarted;
_disposedTokenSource = new CancellationTokenSource();
_buffer = new ConcurrentQueue <ResolvedEvent>();
_tokenRegistration = cancellationToken.Register(_disposedTokenSource.Dispose);
if (!subscriptionStarted1.Task.IsCompleted)
{
subscriptionStarted1.SetResult(true);
}
Log.Information(
"Catch-up subscription {subscriptionId} to {streamName}@{streamRevision} running...",
_subscriptionId, streamName, _nextRevision);
}
public StreamSubscription(
IPublisher bus,
string streamName,
StreamRevision?startRevision,
bool resolveLinks,
ClaimsPrincipal user,
bool requiresLeader,
IReadIndex readIndex,
CancellationToken cancellationToken)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
if (streamName == null)
{
throw new ArgumentNullException(nameof(streamName));
}
if (readIndex == null)
{
throw new ArgumentNullException(nameof(readIndex));
}
_subscriptionId = Guid.NewGuid();
_bus = bus;
_streamName = streamName;
_resolveLinks = resolveLinks;
_user = user;
_requiresLeader = requiresLeader;
_readIndex = readIndex;
_cancellationToken = cancellationToken;
_subscriptionStarted = new TaskCompletionSource <bool>();
_startRevision = startRevision == StreamRevision.End
? StreamRevision.FromInt64(readIndex.GetStreamLastEventNumber(_streamName) + 1)
: startRevision + 1 ?? StreamRevision.Start;
_inner = startRevision == StreamRevision.End
? (IStreamEnumerator) new LiveStreamSubscription(_subscriptionId, _bus, _streamName,
StreamRevision.FromInt64(readIndex.GetStreamLastEventNumber(_streamName) + 1), _resolveLinks,
_user, _requiresLeader, _subscriptionStarted, _cancellationToken)
: new CatchupStreamSubscription(_subscriptionId, bus, streamName,
startRevision + 1 ?? StreamRevision.Start, resolveLinks, user, _requiresLeader, readIndex,
_subscriptionStarted, cancellationToken);
}
public StreamSubscription(
IPublisher bus,
string streamName,
StreamRevision?startRevision,
bool resolveLinks,
ClaimsPrincipal user,
bool requiresLeader,
IReadIndex readIndex,
CancellationToken cancellationToken)
{
if (bus == null)
{
throw new ArgumentNullException(nameof(bus));
}
if (streamName == null)
{
throw new ArgumentNullException(nameof(streamName));
}
if (readIndex == null)
{
throw new ArgumentNullException(nameof(readIndex));
}
_subscriptionId = Guid.NewGuid();
_bus = bus;
_streamName = streamName;
_resolveLinks = resolveLinks;
_user = user;
_requiresLeader = requiresLeader;
_cancellationToken = cancellationToken;
_subscriptionStarted = new TaskCompletionSource <bool>();
_channel = Channel.CreateBounded <ResolvedEvent>(BoundedChannelOptions);
_semaphore = new SemaphoreSlim(1, 1);
SubscriptionId = _subscriptionId.ToString();
Subscribe(startRevision == StreamRevision.End
? StreamRevision.FromInt64(readIndex.GetStreamLastEventNumber(_streamName) + 1)
: startRevision + 1 ?? StreamRevision.Start, startRevision != StreamRevision.End);
}