private async Task InitializeAndStartLogicalTimeManagerAsync(CancellationToken cancellationToken)
{
ActorTrace.Source.WriteInfoWithId(TraceType, this.traceId, "Initializing logical time manager...");
if (this.isLogicalTimeManagerInitialized == true)
{
ActorTrace.Source.WriteInfoWithId(TraceType, this.traceId, "Logical time manager already initialized...");
return;
}
using (ITransaction tx = this.stateManager.CreateTransaction())
{
var condVal = await this.logicalTimeDictionary.TryGetValueAsync(tx, LogicalTimestampKey);
if (condVal.HasValue)
{
var logicalTimeStamp = LogicalTimestampSerializer.Deserialize(condVal.Value);
this.logicalTimeManager.CurrentLogicalTime = logicalTimeStamp.Timestamp;
}
}
this.logicalTimeManager.Start();
Volatile.Write(ref this.isLogicalTimeManagerInitialized, true);
ActorTrace.Source.WriteInfoWithId(TraceType, this.traceId, "Initializing logical time manager SUCCEEDED.");
}
async Task VolatileLogicalTimeManager.ISnapshotHandler.OnSnapshotAsync(TimeSpan currentLogicalTime)
{
var logicalTimedata = new LogicalTimestamp(currentLogicalTime);
var data = LogicalTimestampSerializer.Serialize(logicalTimedata);
try
{
using (var tx = this.stateManager.CreateTransaction())
{
await this.logicalTimeDictionary.AddOrUpdateAsync(tx, LogicalTimestampKey, data, (k, v) => data);
await tx.CommitAsync();
}
}
catch (FabricException)
{
// Ignore any fabric exception.
}
catch (Exception ex)
{
ActorTrace.Source.WriteErrorWithId(
TraceType,
this.traceId,
string.Format("OnSnapshotAsync() unexpected exception: {0}.", ex.ToString()));
}
}
