private void UpdateSchedulerState()
{
bool mustenable = true;
// Every iteration we will make sure that, if we are primary and we are not in lockdown,
// there is a SchedulerCommand, and it is started.
// and if we are not primary or we are in lockdown, make sure there is no scheduler running anymore.
if (this.backend == null)
{
mustenable = false;
}
else
{
if (this.backend.IsInFullLockDown)
{
mustenable = false;
}
else if (!this.backend.IsPrimary())
{
mustenable = false;
}
}
if (mustenable)
{
if (this.scheduler == null)
{
this.scheduler = new ScheduledCommand(
() => { return(this.backend != null && this.backend.IsPrimary()); },
new LoopbackRingMaster(this.backend),
new MarshallerChannel(null));
}
this.scheduler.Start();
}
else if (this.scheduler != null)
{
this.scheduler.Close();
this.scheduler = null;
}
}
/// <summary>
/// initializes the pseudonodes tree structure
/// </summary>
/// <param name="rm">the rm object to use</param>
private void InitializePseudoNodesStructure(AbstractRingMaster rm)
{
// ensure the tree structure is built
if (!this.pseudosInitialized)
{
rm.Create("/$bulkwatcher", null, null, CreateMode.Persistent);
rm.Create("/$metadata", null, null, CreateMode.Persistent);
foreach (string path in ScheduledCommand.GetPaths())
{
rm.Create(path, null, null, CreateMode.PersistentAllowPathCreation);
}
rm.Delete("/$metadata/ring", -1);
rm.Create("/$metadata/clusterreplicaset", null, null, CreateMode.Persistent);
rm.Create("/$metadata/health", null, null, CreateMode.Persistent);
rm.Create("/$metadata/servicehealing", null, null, CreateMode.Persistent);
rm.Create("/$metadata/primary", null, null, CreateMode.Persistent);
rm.Create("/$metadata/synchronization/$syncpoint", null, null, CreateMode.PersistentAllowPathCreation);
Trace.TraceInformation("PseudoNodes initialized");
this.pseudosInitialized = true;
}
}
