public virtual void Poll(bool force = false, bool sync = false)
{
using (MiniProfiler.Current.Step("Poll - " + UniqueKey))
{
// Don't poll more than once every n seconds, that's just rude
if (!force && DateTime.UtcNow < LastPoll.GetValueOrDefault().AddSeconds(MinSecondsBetweenPolls))
{
return;
}
// If we're seeing a lot of poll failures in a row, back the hell off
if (!force && PollFailsInaRow >= FailsBeforeBackoff && DateTime.UtcNow < LastPoll.GetValueOrDefault() + BackoffDuration)
{
return;
}
// Prevent multiple poll threads for this node from running at once
if (_isPolling)
{
return;
}
_isPolling = true;
if (sync)
{
InnerPoll(force);
}
else
{
_pollTask = Task.Factory.StartNew(() => InnerPoll(force));
}
}
}
protected virtual void PollImpl(bool force, bool wait)
{
using (MiniProfiler.Current.Step("Poll - " + UniqueKey))
{
// Don't poll more than once every n seconds, that's just rude
if (!force && DateTime.UtcNow < LastPoll.GetValueOrDefault().AddSeconds(MinSecondsBetweenPolls))
{
return;
}
// If we're seeing a lot of poll failures in a row, back the hell off
if (!force && PollFailsInaRow >= FailsBeforeBackoff && DateTime.UtcNow < LastPoll.GetValueOrDefault() + BackoffDuration)
{
return;
}
// Prevent multiple poll threads for this node from running at once
if (_isPolling)
{
return;
}
_isPolling = true;
PollStatus = "Poll Started";
InnerPollImpl(force, wait);
PollStatus = "Poll Complete";
}
}
public virtual void Poll()
{
// Don't poll more than once every n seconds, that's just rude
if (DateTime.UtcNow < LastPoll.GetValueOrDefault().AddSeconds(MinSecondsBetweenPolls))
{
return;
}
// If we're seeing a lot of poll failures in a row... then wait
if (PollFailsInaRow >= FailsBeforeBackoff && DateTime.UtcNow < LastPoll.GetValueOrDefault() + BackoffDuration)
{
return;
}
// Prevent multiple poll threads for this node from running at once
if (isPolling)
{
return;
}
isPolling = true;
pollTask = Task.Factory.StartNew(() => InnerPoll());
}