public async Task ReadHealthDataAsync(CancellationToken cancellationToken)
{
this.traceWriter.WriteInfo("HealthDataProducer.ReadHealthData: Health data read pass has started.");
IEntity clusterEntity = new ClusterEntity(this.healthClient, this.consumer, this.traceWriter, this.config, this.filterRepository);
// We will be performing a depth-first traversal of entities. Push the first entity to stack.
this.stack.Push(clusterEntity);
var entityCount = 0;
this.stopwatch.Restart();
while (this.stack.Count > 0)
{
if (cancellationToken.IsCancellationRequested)
{
this.traceWriter.WriteInfo("HealthDataProducer.ReadHealthDataAsync: Entity processing canceled.");
this.stopwatch.Reset();
return;
}
if (this.stopwatch.Elapsed >= this.config.HealthDataReadTimeout)
{
this.traceWriter.WriteError("HealthDataProducer.ReadHealthDataAsync: Entity processing timed out.");
this.stopwatch.Reset();
this.healthClient.ReportHealth(
HealthState.Error,
"ReadHealthData",
"Read health data loop timed out. The Monitoring service took more time to process health data than the HealthDataReadTimeoutInSeconds value.");
return;
}
IEntity entity = this.stack.Pop();
if (entity == null)
{
continue;
}
var resultEntityList = await entity.ProcessAsync(cancellationToken).ConfigureAwait(false);
entityCount++;
// If the previous entity had any children we need to process, push them on to stack.
if (resultEntityList != null && !cancellationToken.IsCancellationRequested)
{
foreach (var entityToProcess in resultEntityList)
{
this.stack.Push(entityToProcess);
}
}
}
this.traceWriter.WriteInfo(
"HealthDataProducer.ReadHealthData: Read pass completed. Processed {0} entities in {1} millisecond.",
entityCount,
this.stopwatch.Elapsed);
this.stopwatch.Reset();
this.healthClient.ReportHealth(
HealthState.Ok,
"ReadHealthData",
"Read health data loop completed successfully.");
}
public abstract Task ProcessClusterHealthAsync(ClusterEntity cluster);