private async Task <IReadOnlyList <IEntitySyncStateContext <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity, TContext> > > CreateEntitySyncStateContexts(
IEntityContainer <TAtypeEntityId, TAtypeEntity, TContext> aEntities,
IEntityContainer <TBtypeEntityId, TBtypeEntity, TContext> bEntities,
IEnumerable <IEntityRelationData <TAtypeEntityId, TAtypeEntityVersion, TBtypeEntityId, TBtypeEntityVersion> > knownEntityRelations,
IEntityStateCollection <TAtypeEntityId, TAtypeEntityVersion> aStates,
IEntityStateCollection <TBtypeEntityId, TBtypeEntityVersion> bStates,
ISynchronizationLogger logger,
TContext synchronizationContext,
ISynchronizationInterceptor <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity, TContext> interceptor)
{
var entitySynchronizationContexts = new List <IEntitySyncStateContext <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity, TContext> >();
var aDeltaLogInfo = new VersionDeltaLoginInformation();
var bDeltaLogInfo = new VersionDeltaLoginInformation();
foreach (var knownEntityRelationData in knownEntityRelations)
{
(var aState, var aRepositoryVersion) = aStates.RemoveState(knownEntityRelationData.AtypeId, knownEntityRelationData.AtypeVersion);
(var bState, var bRepositoryVersion) = bStates.RemoveState(knownEntityRelationData.BtypeId, knownEntityRelationData.BtypeVersion);
entitySynchronizationContexts.Add(new EntitySyncStateContext <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity, TContext>(
CreateInitialSyncState(knownEntityRelationData, aState, bState, aRepositoryVersion, bRepositoryVersion, aDeltaLogInfo, bDeltaLogInfo)));
}
var newAVersions = aStates.DisposeAndGetLeftovers();
var newBVersions = bStates.DisposeAndGetLeftovers();
await _atypeRepository.VerifyUnknownEntities(newAVersions, synchronizationContext);
await _btypeRepository.VerifyUnknownEntities(newBVersions, synchronizationContext);
if (newAVersions.Count > 0 && newBVersions.Count > 0)
{
s_logger.Info($"Performing entity matching with {newAVersions.Count} Atype and {newBVersions.Count} Btype entities.");
var matchingEntites = _initialEntityMatcher.FindMatchingEntities(
_entityRelationDataFactory,
await aEntities.GetTransformedEntities(newAVersions.Keys, logger.ALoadEntityLogger, synchronizationContext, e => _aMatchDataFactory.CreateMatchData(e.Entity)),
await bEntities.GetTransformedEntities(newBVersions.Keys, logger.BLoadEntityLogger, synchronizationContext, e => _bMatchDataFactory.CreateMatchData(e.Entity)),
newAVersions,
newBVersions);
foreach (var knownEntityRelationData in matchingEntites)
{
newAVersions.Remove(knownEntityRelationData.AtypeId);
newBVersions.Remove(knownEntityRelationData.BtypeId);
var entitySyncState = _initialSyncStateCreationStrategy.CreateFor_Unchanged_Unchanged(knownEntityRelationData);
entitySynchronizationContexts.Add(new EntitySyncStateContext <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity, TContext>(entitySyncState));
aDeltaLogInfo.IncUnchanged();
bDeltaLogInfo.IncUnchanged();
}
s_logger.Info("Entity matching finished.");
}
foreach (var newA in newAVersions)
{
var syncState = _initialSyncStateCreationStrategy.CreateFor_Added_NotExisting(newA.Key, newA.Value);
entitySynchronizationContexts.Add(new EntitySyncStateContext <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity, TContext>(syncState));
}
foreach (var newB in newBVersions)
{
var syncState = _initialSyncStateCreationStrategy.CreateFor_NotExisting_Added(newB.Key, newB.Value);
entitySynchronizationContexts.Add(new EntitySyncStateContext <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity, TContext>(syncState));
}
interceptor.TransformInitialCreatedStates(entitySynchronizationContexts, _syncStateFactory);
// all the leftovers in newAVersions and newBVersions must be the added ones
aDeltaLogInfo.IncAdded(newAVersions.Count);
bDeltaLogInfo.IncAdded(newBVersions.Count);
s_logger.InfoFormat("Atype delta: {0}", aDeltaLogInfo);
s_logger.InfoFormat("Btype delta: {0}", bDeltaLogInfo);
logger.LogDeltas(aDeltaLogInfo, bDeltaLogInfo);
return(entitySynchronizationContexts);
}
public async Task <bool> Synchronize()
{
s_logger.InfoFormat("Entered. Syncstrategy '{0}' with Atype='{1}' and Btype='{2}'", _initialSyncStateCreationStrategy.GetType().Name, typeof(TAtypeEntity).Name, typeof(TBtypeEntity).Name);
try
{
using (var totalProgress = _totalProgressFactory.Create())
{
var cachedData = _entityRelationDataAccess.LoadEntityRelationData();
var aVersionsTask = _atypeRepository.GetVersions();
var bVersionsTask = _btypeRepository.GetVersions();
var aVersions = await aVersionsTask;
var bVersions = await bVersionsTask;
var atypeRepositoryVersions = CreateDictionary(
aVersions,
_atypeIdComparer);
var btypeRepositoryVersions = CreateDictionary(
bVersions,
_btypeIdComparer);
IReadOnlyDictionary <TAtypeEntityId, TAtypeEntity> aEntities = null;
IReadOnlyDictionary <TBtypeEntityId, TBtypeEntity> bEntities = null;
try
{
if (cachedData == null)
{
s_logger.Info("Did not find entity caches. Performing initial population");
totalProgress.NotifyLoadCount(atypeRepositoryVersions.Count, btypeRepositoryVersions.Count);
using (totalProgress.StartARepositoryLoad())
{
aEntities = CreateDictionary(
await _atypeRepository.Get(atypeRepositoryVersions.Keys),
_atypeIdComparer);
}
using (totalProgress.StartBRepositoryLoad())
{
bEntities = CreateDictionary(
await _btypeRepository.Get(btypeRepositoryVersions.Keys),
_btypeIdComparer);
}
cachedData = _initialEntityMatcher.FindMatchingEntities(
_entityRelationDataFactory,
aEntities,
bEntities,
atypeRepositoryVersions,
btypeRepositoryVersions);
}
var entitySyncStates = new EntitySyncStateContainer <TAtypeEntityId, TAtypeEntityVersion, TAtypeEntity, TBtypeEntityId, TBtypeEntityVersion, TBtypeEntity>();
var aDeltaLogInfo = new VersionDeltaLoginInformation();
var bDeltaLogInfo = new VersionDeltaLoginInformation();
foreach (var cachedEntityData in cachedData)
{
TAtypeEntityVersion repositoryAVersion;
TBtypeEntityVersion repositoryBVersion;
var repositoryAVersionAvailable = atypeRepositoryVersions.TryGetValue(cachedEntityData.AtypeId, out repositoryAVersion);
var repositoryBVersionAvailable = btypeRepositoryVersions.TryGetValue(cachedEntityData.BtypeId, out repositoryBVersion);
if (repositoryAVersionAvailable)
{
atypeRepositoryVersions.Remove(cachedEntityData.AtypeId);
}
if (repositoryBVersionAvailable)
{
btypeRepositoryVersions.Remove(cachedEntityData.BtypeId);
}
var entitySyncState = CreateInitialSyncState(cachedEntityData, repositoryAVersionAvailable, repositoryAVersion, repositoryBVersionAvailable, repositoryBVersion, aDeltaLogInfo, bDeltaLogInfo);
entitySyncStates.Add(entitySyncState);
}
aDeltaLogInfo.IncAdded(atypeRepositoryVersions.Count);
bDeltaLogInfo.IncAdded(btypeRepositoryVersions.Count);
s_logger.InfoFormat("Atype delta: {0}", aDeltaLogInfo);
s_logger.InfoFormat("Btype delta: {0}", bDeltaLogInfo);
foreach (var newA in atypeRepositoryVersions)
{
entitySyncStates.Add(_initialSyncStateCreationStrategy.CreateFor_Added_NotExisting(newA.Key, newA.Value));
}
foreach (var newB in btypeRepositoryVersions)
{
entitySyncStates.Add(_initialSyncStateCreationStrategy.CreateFor_NotExisting_Added(newB.Key, newB.Value));
}
HashSet <TAtypeEntityId> aEntitesToLoad = new HashSet <TAtypeEntityId>();
HashSet <TBtypeEntityId> bEntitesToLoad = new HashSet <TBtypeEntityId>();
entitySyncStates.Execute(s => s.AddRequiredEntitiesToLoad(aEntitesToLoad.Add, bEntitesToLoad.Add));
if (aEntities == null && bEntities == null)
{
totalProgress.NotifyLoadCount(aEntitesToLoad.Count, bEntitesToLoad.Count);
using (totalProgress.StartARepositoryLoad())
{
aEntities = CreateDictionary(
await _atypeRepository.Get(aEntitesToLoad),
_atypeIdComparer);
}
using (totalProgress.StartBRepositoryLoad())
{
bEntities = CreateDictionary(
await _btypeRepository.Get(bEntitesToLoad),
_btypeIdComparer);
}
}
entitySyncStates.DoTransition(s => s.FetchRequiredEntities(aEntities, bEntities));
entitySyncStates.DoTransition(s => s.Resolve());
// since resolve may change to an new state, required entities have to be fetched again.
// an state is allowed only to resolve to another state, if the following states requires equal or less entities!
entitySyncStates.DoTransition(s => s.FetchRequiredEntities(aEntities, bEntities));
using (var progress = totalProgress.StartProcessing(entitySyncStates.Count))
{
await entitySyncStates.DoTransition(
async s =>
{
var nextState = await s.PerformSyncActionNoThrow();
progress.Increase();
return(nextState);
});
}
var newData = new List <IEntityRelationData <TAtypeEntityId, TAtypeEntityVersion, TBtypeEntityId, TBtypeEntityVersion> >();
entitySyncStates.Execute(s => s.AddNewRelationNoThrow(newData.Add));
entitySyncStates.Dispose();
_entityRelationDataAccess.SaveEntityRelationData(newData);
}
finally
{
_atypeRepository.Cleanup(aEntities);
_btypeRepository.Cleanup(bEntities);
}
}
}
catch (Exception x)
{
_exceptionLogger.LogException(x, s_logger);
return(false);
}
s_logger.DebugFormat("Exiting.");
return(true);
}