public void Initialize(int sessionRunId)
{
m_context = RuntimeEntityModel.CreateInstance();
m_sessionRunId = sessionRunId;
AnalysisEngine.Initialize(sessionRunId, this);
MigrationEngine.Initialize(sessionRunId);
// Create a worker thread and mark it a background thread
m_thread = new Thread(Run);
m_thread.Name = m_threadName;
m_thread.IsBackground = true;
SubscribeListeners();
}
internal SessionWorker(
Guid sessionId,
ManualResetEvent sessionEvent,
AnalysisEngine analysisEngine,
MigrationEngine migrationEngine,
LinkEngine linkEngine,
Guid leftMigrationSourceId,
Guid rightMigrationSourceId,
WorkFlowType workFlowType,
int secondsSyncWaitInterval,
string threadName)
{
SessionId = sessionId;
Event = sessionEvent;
AnalysisEngine = analysisEngine;
MigrationEngine = migrationEngine;
LinkEngine = linkEngine;
LeftMigrationSourceid = leftMigrationSourceId;
RightMigrationSourceid = rightMigrationSourceId;
WorkFlowType = workFlowType;
m_threadName = threadName;
SqlSyncStateManager manager = SqlSyncStateManager.GetInstance();
m_syncStateManager = manager;
m_syncCommandQueue = manager;
m_syncStateMachine = new SyncStateMachine(PipelineState.Default, new SyncStateTransitionAlgorithm(),
OwnerType.Session, sessionId, m_syncStateManager);
m_orchPolicy = new SessionOrchestrationPolicy(WorkFlowType, m_syncStateMachine);
try
{
checked
{
MilliSecondsSyncWaitInterval = secondsSyncWaitInterval * 1000;
}
}
catch (OverflowException)
{
MilliSecondsSyncWaitInterval = int.MaxValue;
TraceManager.TraceInformation(
"The speicified interval of {0} minutes is too long for the system to handle. The interval is now changed to {1} minutes.",
secondsSyncWaitInterval / 60,
(int)(MilliSecondsSyncWaitInterval / 1000 / 60));
}
}
private void CleanupDeltaTable(Guid migrationSourceid)
{
AnalysisEngine.ObsoleteDeltaTableEntries(migrationSourceid);
}
private void OneDirectionProcessPipeline(
bool isLeftToRight,
Guid sourceMigrationSourceId,
Guid targetMigrationSourceId,
bool contextSyncNeeded,
bool bidirection)
{
try
{
m_orchPolicy.Check();
AnalysisEngine.SourceMigrationSourceId = sourceMigrationSourceId;
AnalysisEngine.InvokePreAnalysisAddins(sourceMigrationSourceId);
if (!AnalysisEngine.InvokeProceedToAnalysisOnAnalysisAddins(sourceMigrationSourceId))
{
// In case any of the AnalysisAddins perform cleanup in the PostAnalysis method
AnalysisEngine.InvokePostAnalysisAddins(sourceMigrationSourceId);
return;
}
TraceManager.TraceInformation("Pipeline flow from {0} to {1}", sourceMigrationSourceId, targetMigrationSourceId);
if (contextSyncNeeded)
{
TraceManager.TraceInformation("Generating context info tables for the migration source {0}", sourceMigrationSourceId);
AnalysisEngine.GenerateContextInfoTables(sourceMigrationSourceId);
m_orchPolicy.Check();
}
TraceManager.TraceInformation("Generating delta tables for the migration source {0}", sourceMigrationSourceId);
AnalysisEngine.GenerateDeltaTables(sourceMigrationSourceId);
m_orchPolicy.Check();
AnalysisEngine.InvokePostDeltaComputationAddins(sourceMigrationSourceId);
TraceManager.TraceInformation("Generating linking delta for the migration source {0}", sourceMigrationSourceId);
LinkEngine.GenerateLinkDelta(SessionId, sourceMigrationSourceId);
m_orchPolicy.Check();
AnalysisEngine.InvokePostAnalysisAddins(sourceMigrationSourceId);
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Above: data collection at source side //
// Below: data migration/submission at target side //
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
MigrationEngine.InvokePreMigrationAddins(targetMigrationSourceId);
if (contextSyncNeeded)
{
TraceManager.TraceInformation("Establishing context for the migration source {0}", targetMigrationSourceId);
MigrationEngine.EstablishContext(targetMigrationSourceId);
m_orchPolicy.Check();
}
if (!AnalysisEngine.DisableTargetAnalysis)
{
TraceManager.TraceInformation("Generating delta tables for the migration source {0}", targetMigrationSourceId);
AnalysisEngine.GenerateDeltaTables(targetMigrationSourceId);
m_orchPolicy.Check();
}
TraceManager.TraceInformation("Generating migration instructions for the migration source {0}", targetMigrationSourceId);
AnalysisEngine.GenerateMigrationInstructions(targetMigrationSourceId);
m_orchPolicy.Check();
TraceManager.TraceInformation("Post-processing delta table entries from the migration source {0}", targetMigrationSourceId);
AnalysisEngine.PostProcessDeltaTableEntries(targetMigrationSourceId, bidirection);
m_orchPolicy.Check();
TraceManager.TraceInformation("Migrating to the migration source {0}", targetMigrationSourceId);
MigrationEngine.Migrate(targetMigrationSourceId, m_orchPolicy);
m_orchPolicy.Check();
MigrationEngine.InvokePostMigrationAddins(targetMigrationSourceId);
TraceManager.TraceInformation("Processing linking delta");
LinkEngine.AnalyzeLinkDelta(SessionId, sourceMigrationSourceId, bidirection);
m_orchPolicy.Check();
TraceManager.TraceInformation("Migrating links to the migration source {0}", targetMigrationSourceId);
LinkEngine.MigrateLinks(SessionId, targetMigrationSourceId);
m_orchPolicy.Check();
}
finally
{
// Record a sync point in the database
try
{
RecordSyncPoint(isLeftToRight, sourceMigrationSourceId, targetMigrationSourceId);
}
catch (Exception ex)
{
TraceManager.TraceWarning("{0}: Unable to record SyncPoint data due to exception: {1}", m_thread.Name, ex.ToString());
}
}
}