/// <summary>
/// Enqueue a new Tracker into the all trackers queue.
/// </summary>
/// <param name="client">
/// The TrackerData sent from the tracker
/// </param>
/// <returns>
/// true if added successfully, false otherwise
/// </returns>
public void EnqueueNewTracker(TrackerData client)
{
lock (allTrackers)
{
if (! allTrackers.Contains(client))
{
allTrackers.Add(client);
}
}
}
protected bool Equals(TrackerData other)
{
return string.Equals(Guid, other.Guid);
}
/// <summary>
/// Make a deep copy of <code>rhs</code>.
/// If rhs is null, then null is returned.
/// </summary>
/// <param name="rhs">
/// The <see cref="TrackerData"/> to make a copy of.
/// </param>
/// <returns>
/// A TrackerData that is a copy of <code>rhs</code>, null if <code>rhs</code> is null.
/// </returns>
public static TrackerData DeepCopy(TrackerData rhs)
{
if (rhs == null)
{
return null;
}
TrackerData copy = new TrackerData()
{
Guid = string.Copy(rhs.Guid),
HostName = string.Copy(rhs.HostName),
Status = rhs.Status,
LastCheckinTime = rhs.LastCheckinTime,
CurrentJob = JobData.DeepCopy(rhs.CurrentJob) ?? JobData.EmptyJob
};
return copy;
}
private bool TrackerShouldBeRemoved(TrackerData td, long currTime)
{
return TimeSinceLastCheckin(td, currTime) > 3*lateCheckinLimit &&
td.Status == TrackerStatus.NO_RESPONSE;
}
private long TimeSinceLastCheckin(TrackerData td, long curTime)
{
return curTime - td.LastCheckinTime;
}
private bool RequeueJobIfNeeded(TrackerData td)
{
bool wasRemoved = false;
JobData jd = td.CurrentJob;
if (!jd.Equals(JobData.EmptyJob) && jd.Status == JobStatus.RUNNNG)
{
JobData removedJob = null;
wasRemoved = runningJobs.TryRemove(Guid.Parse(jd.Guid), out removedJob);
if (wasRemoved)
{
removedJob.Status = JobStatus.QUEUED;
PushJob(removedJob);
logger.InfoFormat("Job {0} ({1}) was requeued because its tracker went offline.",
removedJob.FriendlyName, removedJob.Guid);
}
}
return wasRemoved;
}
private bool IsLate(TrackerData td, long currTime)
{
return TimeSinceLastCheckin(td, currTime) > lateCheckinLimit;
}
/// <summary>
/// Update the tracker specified by <code>td</code> with the
/// info from <code>td</code>.
/// </summary>
/// <param name="td">
/// The updated TrackerData for some tracker.
/// </param>
public void UpdateTracker(TrackerData td)
{
td.LastCheckinTime = Utils.CurrentUTCMillies();
lock (allTrackers)
{
int i = allTrackers.FindIndex(t => t.Equals(td));
if (i < 0)
allTrackers.Add(td);
else
allTrackers[i] = td;
}
}
/// <summary>
/// Return a list of trackers. The <code>trackers</code> parameter will
/// be allocated and populated with ref's to the TrackerDatas in this queue.
/// </summary>
/// <param name="trackers">
/// A handle to an uninitialized array of TrackerData.
/// </param>
public void GetTrackersArray(out TrackerData[] trackers)
{
lock (allTrackers)
{
trackers = new TrackerData[allTrackers.Count];
allTrackers.CopyTo(trackers, 0);
}
}
