protected EventProcessedResult InternalCommittedEventProcessed(
string partition, EventReaderSubscriptionMessage.CommittedEventReceived message,
EmittedEventEnvelope[] emittedEvents, PartitionState newPartitionState)
{
if (!ValidateEmittedEvents(emittedEvents))
{
return(null);
}
var oldState = _partitionStateCache.GetLockedPartitionState(partition);
bool eventsWereEmitted = emittedEvents != null;
bool changed = oldState.IsChanged(newPartitionState);
PartitionState partitionState1 = null;
// NOTE: projectionResult cannot change independently unless projection definition has changed
if (changed)
{
var lockPartitionStateAt = partition != "" ? message.CheckpointTag : null;
partitionState1 = newPartitionState;
_partitionStateCache.CacheAndLockPartitionState(partition, partitionState1, lockPartitionStateAt);
}
if (changed || eventsWereEmitted)
{
var correlationId = message.Data.IsJson ? message.Data.Metadata.ParseCheckpointTagCorrelationId() : null;
return(new EventProcessedResult(
partition, message.CheckpointTag, oldState, partitionState1, emittedEvents, message.Data.EventId,
correlationId));
}
else
{
return(null);
}
}
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);
}
}
public void setup()
{
//given
_cache = new PartitionStateCache();
_cachedAtCheckpointTag1 = CheckpointTag.FromPosition(1000, 900);
_cachedAtCheckpointTag2 = CheckpointTag.FromPosition(1200, 1100);
_cachedAtCheckpointTag3 = CheckpointTag.FromPosition(1400, 1300);
_cache.CacheAndLockPartitionState("partition1", "data1", _cachedAtCheckpointTag1);
_cache.CacheAndLockPartitionState("partition2", "data2", _cachedAtCheckpointTag2);
_cache.CacheAndLockPartitionState("partition3", "data3", _cachedAtCheckpointTag3);
// when
_cache.Unlock(_cachedAtCheckpointTag2);
}
public void given()
{
//given
_cache = new PartitionStateCache(CheckpointTag.FromPosition(0, -1));
_cachedAtCheckpointTag = CheckpointTag.FromPosition(1000, 900);
_cache.CacheAndLockPartitionState("partition", new PartitionStateCache.State("data", _cachedAtCheckpointTag), _cachedAtCheckpointTag);
}
public void setup()
{
//given
_cache = new PartitionStateCache();
_cachedAtCheckpointTag1 = CheckpointTag.FromPosition(0, 1000, 900);
_cachedAtCheckpointTag2 = CheckpointTag.FromPosition(0, 1200, 1100);
_cachedAtCheckpointTag3 = CheckpointTag.FromPosition(0, 1400, 1300);
_cache.CacheAndLockPartitionState(
"partition1", new PartitionState("data1", null, _cachedAtCheckpointTag1), _cachedAtCheckpointTag1);
_cache.CacheAndLockPartitionState(
"partition2", new PartitionState("data2", null, _cachedAtCheckpointTag2), _cachedAtCheckpointTag2);
_cache.CacheAndLockPartitionState(
"partition3", new PartitionState("data3", null, _cachedAtCheckpointTag3), _cachedAtCheckpointTag3);
// when
_cache.Unlock(_cachedAtCheckpointTag2, forgetUnlocked: true);
}
private void EnterInitial()
{
_handlerPartition = null;
foreach (var requestId in _loadStateRequests)
{
_readDispatcher.Cancel(requestId);
}
_loadStateRequests.Clear();
_partitionStateCache.Initialize();
_processingQueue.Initialize();
_checkpointManager.Initialize();
_tickPending = false;
_partitionStateCache.CacheAndLockPartitionState("", new PartitionStateCache.State("", null), null);
_expectedSubscriptionMessageSequenceNumber = -1; // this is to be overridden when subscribing
// NOTE: this is to workaround exception in GetState requests submitted by client
}
public void given()
{
//given
_cache = new PartitionStateCache();
_cachedAtCheckpointTag = CheckpointTag.FromPosition(1000, 900);
_cache.CacheAndLockPartitionState("partition", new PartitionStateCache.State("data", _cachedAtCheckpointTag), _cachedAtCheckpointTag);
_relockedData = _cache.TryGetAndLockPartitionState("partition", CheckpointTag.FromPosition(2000, 1900));
}
public void setup()
{
//given
_cache = new PartitionStateCache(10);
_cachedAtCheckpointTag1 = CheckpointTag.FromPosition(1000, 900);
for (var i = 0; i < 15; i++)
_cache.CacheAndLockPartitionState(
"partition1", "data1", CheckpointTag.FromPosition(1000 + (i*100), 1000 + (i*100) - 50));
_cachedAtCheckpointTag2 = CheckpointTag.FromPosition(20100, 20050);
_cachedAtCheckpointTag3 = CheckpointTag.FromPosition(20200, 20150);
_cache.CacheAndLockPartitionState("partition1", "data1", _cachedAtCheckpointTag1);
_cache.CacheAndLockPartitionState("partition2", "data2", _cachedAtCheckpointTag2);
_cache.CacheAndLockPartitionState("partition3", "data3", _cachedAtCheckpointTag3);
// when
_cache.Unlock(_cachedAtCheckpointTag2);
}
public void setup()
{
//given
_cache = new PartitionStateCache(10);
_cachedAtCheckpointTag1 = CheckpointTag.FromPosition(0, 1000, 900);
for (var i = 0; i < 15; i++)
{
CheckpointTag at = CheckpointTag.FromPosition(0, 1000 + (i*100), 1000 + (i*100) - 50);
_cache.CacheAndLockPartitionState("partition1", new PartitionState("data1", null, at), at);
}
_cachedAtCheckpointTag2 = CheckpointTag.FromPosition(0, 20100, 20050);
_cachedAtCheckpointTag3 = CheckpointTag.FromPosition(0, 20200, 20150);
_cache.CacheAndLockPartitionState(
"partition1", new PartitionState("data1", null, _cachedAtCheckpointTag1), _cachedAtCheckpointTag1);
_cache.CacheAndLockPartitionState(
"partition2", new PartitionState("data2", null, _cachedAtCheckpointTag2), _cachedAtCheckpointTag2);
_cache.CacheAndLockPartitionState(
"partition3", new PartitionState("data3", null, _cachedAtCheckpointTag3), _cachedAtCheckpointTag3);
_cache.Unlock(_cachedAtCheckpointTag2);
// when
_cache.Initialize();
}
public void when()
{
_cache = new PartitionStateCache();
_cachedAtCheckpointTag = CheckpointTag.FromPosition(0, 1000, 900);
_cache.CacheAndLockPartitionState("partition", new PartitionState("data", null, _cachedAtCheckpointTag), _cachedAtCheckpointTag);
}
private void EnterInitial()
{
_partitionStateCache.CacheAndLockPartitionState("", "", null);
// NOTE: this is to workaround exception in GetState requests submitted by client
}