/// <summary>
/// Creates new instance of CommitDataService type
/// </summary>
/// <param name="nodes">Nodes which will accept data changes</param>
/// <param name="snapshotsService">Service which handles snapshots</param>
/// <param name="mutableParentProvider">Provider of node parent information</param>
public CommitDataService(INodeProvider<Guid, object, EdgeData> nodes, TypesService typesService, SnapshotsService snapshotsService, IParentMapProvider<Guid, object, EdgeData> mutableParentProvider, IParentMapProvider<Guid, object, EdgeData> immutableParentProvider, IChangeSetProvider<Guid, object, EdgeData> changeSetProvider, NodeMergeExecutor nodeMergeExecutor, ICollectedNodesProvider<Guid, object, EdgeData> collectedNodesProvider)
{
this.nodes = nodes;
this.snapshotsService = snapshotsService;
this.mutableParentProvider = mutableParentProvider;
this.immutableParentProvider = immutableParentProvider;
this.changeSetProvider = changeSetProvider;
this.nodeMergeExecutor = nodeMergeExecutor;
this.typesService = typesService;
this.collectedNodesProvider = collectedNodesProvider;
}
/// <summary>
/// Creates new instance of CommitDataService type
/// </summary>
/// <param name="nodes">Nodes which will accept data changes</param>
/// <param name="snapshotsService">Service which handles snapshots</param>
/// <param name="mutableParentProvider">Provider of node parent information</param>
public CommitDataService(INodeProvider <Guid, object, EdgeData> nodes, TypesService typesService, SnapshotsService snapshotsService, IParentMapProvider <Guid, object, EdgeData> mutableParentProvider, IParentMapProvider <Guid, object, EdgeData> immutableParentProvider, IChangeSetProvider <Guid, object, EdgeData> changeSetProvider, NodeMergeExecutor nodeMergeExecutor, ICollectedNodesProvider <Guid, object, EdgeData> collectedNodesProvider)
{
this.nodes = nodes;
this.snapshotsService = snapshotsService;
this.mutableParentProvider = mutableParentProvider;
this.immutableParentProvider = immutableParentProvider;
this.changeSetProvider = changeSetProvider;
this.nodeMergeExecutor = nodeMergeExecutor;
this.typesService = typesService;
this.collectedNodesProvider = collectedNodesProvider;
}
public static DBChangeMonitor GetMonitor()
{
if (Monitor == null)
{
List<IChangeSetProvider> Providers = new List<IChangeSetProvider>();
Provider = new K12.Data.Utility.PTChangeSetProvider();
Providers.Add(Provider);
Monitor = new FISCA.Synchronization.DBChangeMonitor(mMonitorInterval, Providers.ToArray());
Monitor.SetBaseLine();
Monitor.Start();
}
return Monitor;
}
private void InitializeServices(Type rootEntityType, Type[] entityTypes, UpgradeConfiguration upgradeConfiguration)
{
this.rootEntityType = rootEntityType;
this.entityTypes = entityTypes;
typesService = new TypesService(provider);
objectSerializationService.TypesService = typesService;
var interfaceToTypeIdMapping = typesService.InitializeTypeSystem(entityTypes);
var completeTypesList = interfaceToTypeIdMapping.Keys;
generationService = new GenerationService(typesService);
// TODO (nsabo) Optional loading of proxy types from the given assembly (we dont want always to generate on small devices, Silverlight...)
// Note: Collection/Dictionary types are not saved in the assembly
var interfaceToGeneratedMapping = generationService.GenerateProxyTypes(completeTypesList, Properties.Settings.Default.SaveGeneratedAssemblyToDisk, Properties.Settings.Default.GeneratedAssemblyFileName);
proxyCreatorService = new ProxyCreatorService(completeTypesList, interfaceToTypeIdMapping, interfaceToGeneratedMapping);
snapshotsService = new SnapshotsService(provider);
#region Parent map provider setup
if (Properties.Settings.Default.ParentMappingFileStorageUsed)
{
// Usage of file for caching parent information
var indexedFile = new IndexedFileStorage(new FileStream(this.parentMappingFileName, FileMode.Create), Properties.Settings.Default.ParentMappingFileBlockSize, false);
indexedFile.Serializer = this.objectSerializationService;
disposables.Add(indexedFile);
var parentProviderStorage = new CachedWriteNodeProviderUnsafe <Guid, object, EdgeData>(
new DirectNodeProviderUnsafe <Guid, object, EdgeData>(indexedFile, true),
new LimitedDirectNodeProviderUnsafe <Guid, object, EdgeData>(
new LimitedMemoryStorageUnsafe <Guid, object>(Properties.Settings.Default.ParentMappingMemoryMinimumCount, Properties.Settings.Default.ParentMappingMemoryMaximumCount), false)
);
disposables.Add(parentProviderStorage);
mutableParentProvider = new ParentMapProvider(parentProviderStorage, provider, null, true);
}
else
{
// Default parent information is stored in memory and has only the last snapshot available
mutableParentProvider = new ParentMapProvider(new DirectNodeProviderUnsafe <Guid, object, EdgeData>(new MemoryStorageUnsafe <Guid, object>(), false), provider, null, true);
}
#endregion
#region Merge rule provider setup
IMergeRuleProvider mergeRuleProvider = null;
if (SnapshotIsolationEnabled)
{
if (Properties.Settings.Default.ConcurrencyAutoOverrideResolution)
{
mergeRuleProvider = new AutoOverrideMergeRuleProvider();
}
else
{
if (Properties.Settings.Default.ConcurrencyAttributesEnabled)
{
mergeRuleProvider = new AttributeBasedMergeRuleProvider(typesService);
}
else
{
throw new ArgumentException("No selected provider for merge rules in snapshot isolation conflicts. Check configuration of merge rule providers.");
}
}
}
#endregion
#region Setup change set provider
// TODO (nsabo) Provide option for change set safety when context goes offline, OfflineWorkspaces should enable commits when context is back online
if (Properties.Settings.Default.ChangeSetHistoryFileStorageUsed)
{
var indexedFile = new IndexedFileStorage(new FileStream(Properties.Settings.Default.ChangeSetHistoryFileStorageFileName, FileMode.Create), 256, false);
indexedFile.Serializer = this.objectSerializationService;
disposables.Add(indexedFile);
var changeSetProviderStorage = new CachedWriteNodeProviderUnsafe <Guid, object, EdgeData>(
new DirectNodeProviderUnsafe <Guid, object, EdgeData>(indexedFile, true),
new LimitedDirectNodeProviderUnsafe <Guid, object, EdgeData>(
new LimitedMemoryStorageUnsafe <Guid, object>(Properties.Settings.Default.ChangeSetHistoryWriteCacheMinimumCount, Properties.Settings.Default.ChangeSetHistoryWriteCacheMaximumCount), false)
);
disposables.Add(changeSetProviderStorage);
changeSetProvider = new TrackingChangeSetProvider(changeSetProviderStorage);
}
else
{
changeSetProvider = new TrackingChangeSetProvider(new DirectNodeProviderUnsafe <Guid, object, EdgeData>(new MemoryStorageUnsafe <Guid, object>(), false));
}
#endregion
var immutableParentProvider = new ParentMapProvider(new DirectNodeProviderUnsafe <Guid, object, EdgeData>(new MemoryStorageUnsafe <Guid, object>(), false), provider, null, false);
collectedNodesProvider = new CollectedNodesProvider(new DirectNodeProviderUnsafe <Guid, object, EdgeData>(new MemoryStorageUnsafe <Guid, object>(), false), provider);
commitDataService = new CommitDataService(provider, typesService, snapshotsService, mutableParentProvider, immutableParentProvider, changeSetProvider, new NodeMergeExecutor(mergeRuleProvider, typesService), collectedNodesProvider);
workspaceExclusiveLockProvider = new WorkspaceExclusiveLockProvider();
disposables.Add(workspaceExclusiveLockProvider);
trackingWorkspaceStateProvider = new TrackingWorkspaceStateProvider(workspaceExclusiveLockProvider);
objectInstancesService = new ObjectInstancesService(provider, typesService);
subscriptionManagerService = new SubscriptionManagerService(typesService, objectInstancesService);
workspaceFacade = new WorkspaceFacade(commitDataService, trackingWorkspaceStateProvider, subscriptionManagerService, snapshotsService, workspaceExclusiveLockProvider);
backupService = new BackupService();
bool firstRun = snapshotsService.InitializeSnapshots();
if (firstRun)
{
InitializeDefaultSnapshot();
}
else
{
OptimizeData();
}
StaticProxyFacade.Initialize(typesService);
}