| public StartFrom ( CheckpointTag checkpointTag, int checkpointEventNumber ) : void | ||
| checkpointTag | CheckpointTag | |
| checkpointEventNumber | int | |
| return | void | |
public void Handle(CoreProjectionProcessingMessage.CheckpointLoaded message)
{
EnsureState(State.LoadStateRequested);
try {
var checkpointTag = message.CheckpointTag;
var phase = checkpointTag == null ? 0 : checkpointTag.Phase;
var projectionProcessingPhase = _projectionProcessingPhases[phase];
if (checkpointTag == null)
checkpointTag = projectionProcessingPhase.MakeZeroCheckpointTag();
checkpointTag = projectionProcessingPhase.AdjustTag(checkpointTag);
//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
//TODO: handle errors
_coreProjectionCheckpointWriter.StartFrom(checkpointTag, message.CheckpointEventNumber);
PartitionState rootPartitionState = null;
if (_requiresRootPartition) {
rootPartitionState = PartitionState.Deserialize(message.CheckpointData, checkpointTag);
_partitionStateCache.CacheAndLockPartitionState("", rootPartitionState, null);
}
BeginPhase(projectionProcessingPhase, checkpointTag, rootPartitionState);
GoToState(State.StateLoaded);
if (_startOnLoad) {
if (_slaveProjections != null)
_projectionProcessingPhase.AssignSlaves(_slaveProjections);
_projectionProcessingPhase.Subscribe(checkpointTag, fromCheckpoint: true);
} else
GoToState(State.Stopped);
} catch (Exception ex) {
SetFaulted(ex);
}
}
