private void InitializeProjectionFromCheckpoint(string state, CheckpointTag checkpointTag)
{
EnsureState(State.Initial | State.LoadStateRequsted);
//TODO: initialize projection state here (test it)
//TODO: write test to ensure projection state is correctly loaded from a checkpoint and posted back when enough empty records processed
_partitionStateCache.CacheAndLockPartitionState("", new PartitionStateCache.State(state, checkpointTag), null);
_checkpointManager.Start(checkpointTag);
try
{
SetHandlerState("");
GoToState(State.StateLoadedSubscribed);
}
catch (Exception ex)
{
LoadProjectionStateFaulted(state, ex);
return;
}
_processingQueue.InitializeQueue(_checkpointStrategy.PositionTagger.MakeZeroCheckpointTag());
_expectedSubscriptionMessageSequenceNumber = 0;
_subscribed = true;
_publisher.Publish(
new ProjectionSubscriptionManagement.Subscribe(
_projectionCorrelationId, this, checkpointTag, _checkpointStrategy,
_projectionConfig.CheckpointUnhandledBytesThreshold));
_publisher.Publish(new CoreProjectionManagementMessage.Started(_projectionCorrelationId));
}
private void BeginPhase(IProjectionProcessingPhase processingPhase, CheckpointTag startFrom)
{
_projectionProcessingPhase = processingPhase;
_checkpointManager = processingPhase.CheckpointManager;
_projectionProcessingPhase.InitializeFromCheckpoint(startFrom);
_checkpointManager.Start(startFrom);
}
private void BeginPhase(IProjectionProcessingPhase processingPhase, CheckpointTag startFrom, PartitionState rootPartitionState)
{
_projectionProcessingPhase = processingPhase;
_projectionProcessingPhase.SetProjectionState(PhaseState.Starting);
_checkpointManager = processingPhase.CheckpointManager;
_projectionProcessingPhase.InitializeFromCheckpoint(startFrom);
_checkpointManager.Start(startFrom, rootPartitionState);
}