/// <summary>
/// Initializes a new instance of the <see cref="StreamProcessor"/> class.
/// </summary>
/// <param name="streamProcessorId">The <see cref="StreamProcessorId" />.</param>
/// <param name="onAllTenants">The <see cref="IPerformActionOnAllTenants" />.</param>
/// <param name="streamDefinition">The <see cref="IStreamDefinition" />.</param>
/// <param name="getEventProcessor">The <see cref="Func{TResult}" /> that returns an <see cref="IEventProcessor" />.</param>
/// <param name="unregister">An <see cref="Action" /> that unregisters the <see cref="ScopedStreamProcessor" />.</param>
/// <param name="getScopedStreamProcessorsCreator">The <see cref="ICreateScopedStreamProcessors" />.</param>
/// <param name="executionContextManager">The <see cref="IExecutionContextManager" />.</param>
/// <param name="logger">The <see cref="ILogger" />.</param>
/// <param name="cancellationToken">The <see cref="CancellationToken" />.</param>
public StreamProcessor(
StreamProcessorId streamProcessorId,
IPerformActionOnAllTenants onAllTenants,
IStreamDefinition streamDefinition,
Func <IEventProcessor> getEventProcessor,
Action unregister,
FactoryFor <ICreateScopedStreamProcessors> getScopedStreamProcessorsCreator,
IExecutionContextManager executionContextManager,
ILogger <StreamProcessor> logger,
CancellationToken cancellationToken)
{
_identifier = streamProcessorId;
_onAllTenants = onAllTenants;
_streamDefinition = streamDefinition;
_getEventProcessor = getEventProcessor;
_unregister = unregister;
_getScopedStreamProcessorsCreator = getScopedStreamProcessorsCreator;
_executionContextManager = executionContextManager;
_logger = logger;
_internalCancellationTokenSource = new CancellationTokenSource();
_externalCancellationToken = cancellationToken;
_unregisterTokenRegistration = _externalCancellationToken.Register(_unregister);
}
/// <inheritdoc />
public bool TryRegister(
ScopeId scopeId,
EventProcessorId eventProcessorId,
IStreamDefinition streamDefinition,
Func <IEventProcessor> getEventProcessor,
CancellationToken cancellationToken,
out StreamProcessor streamProcessor)
{
streamProcessor = default;
var streamProcessorId = new StreamProcessorId(scopeId, eventProcessorId, streamDefinition.StreamId);
if (_streamProcessors.ContainsKey(streamProcessorId))
{
_logger.Warning("Stream Processor with Id: '{streamProcessorId}' already registered", streamProcessorId);
return(false);
}
streamProcessor = new StreamProcessor(
streamProcessorId,
_onAllTenants,
streamDefinition,
getEventProcessor,
() => Unregister(streamProcessorId),
_getScopedStreamProcessorsCreator,
_executionContextManager,
_loggerManager.CreateLogger <StreamProcessor>(),
cancellationToken);
if (!_streamProcessors.TryAdd(streamProcessorId, streamProcessor))
{
_logger.Warning("Stream Processor with Id: '{StreamProcessorId}' already registered", streamProcessorId);
streamProcessor = default;
return(false);
}
_logger.Trace("Stream Processor with Id: '{StreamProcessorId}' registered", streamProcessorId);
return(true);
}
void Unregister(StreamProcessorId id)
{
_logger.Debug("Unregistering Stream Processor: {streamProcessorId}", id);
_streamProcessors.TryRemove(id, out var _);
}
