public virtual void Watch(List <StreamManagerPool> p_Pools)
{
foreach (StreamManagerPool l_Pool in p_Pools)
{
try
{
PoolWatcherPoolStatistic l_Statistic =
m_PoolStatistics.GetOrAdd(l_Pool, p_Pool => new PoolWatcherPoolStatistic(p_Pool));
PoolWatcherPoolState l_OldState = l_Statistic.State;
l_Statistic.UpdateState();
PoolWatcherPoolState l_NewState = l_Statistic.State;
if (l_OldState == l_NewState)
{
continue;
}
PoolStateChanged(l_Pool, l_OldState, l_NewState);
}
catch (Exception e)
{
HandleError(l_Pool, e);
}
}
}
private void RefreshLimitReached()
{
bool l_HasFreeBlocks = Pool.HasFreeBlocks();
if (State.LimitReached == !l_HasFreeBlocks)
{
return;
}
State = new PoolWatcherPoolState(State.Trend, !l_HasFreeBlocks, Pool.GetBlocksInUse());
}
protected override void PoolStateChanged(StreamManagerPool p_Statistic, PoolWatcherPoolState p_OldState,
PoolWatcherPoolState p_NewState)
{
PoolWatcherPoolStateChangedEvent l_Event = OnPoolStateChanged;
if (l_Event == null)
{
return;
}
l_Event(this, new PoolWatcherPoolStateChangedEventArgs(p_Statistic, p_OldState, p_NewState));
}
public PoolWatcherPoolStateChangedEventArgs(StreamManagerPool p_Pool, PoolWatcherPoolState p_OldState, PoolWatcherPoolState p_NewState)
{
Pool = p_Pool;
OldState = p_OldState;
NewState = p_NewState;
}
public void UpdateState()
{
lock (this)
{
int l_BlocksInUse = Pool.GetBlocksInUse();
m_BlocksInUseHistory.Enqueue(l_BlocksInUse);
// If Limit is reached remote a point
if (m_BlocksInUseHistory.Count < CONST_MAX_QUEUE_SIZE)
{
// We Call Only Status when queue is full
RefreshLimitReached();
return;
}
int l_Count = m_BlocksInUseHistory.Count;
if (l_Count <= 1)
{
return;
}
int l_Pos = 0;
Double l_First = 0;
int l_FirstCount = 0;
Double l_Second = 0;
int l_SecondCount = 0;
foreach (long l_DataPoint in m_BlocksInUseHistory)
{
if (l_Pos < ((int)l_Count / 2))
{
l_First = l_First + l_DataPoint;
l_FirstCount++;
}
else
{
l_Second = l_Second + l_DataPoint;
l_SecondCount++;
}
l_Pos++;
}
Double l_FirstAvg = l_First / l_FirstCount;
Double l_SecondAvg = l_Second / l_SecondCount;
int l_Diff = (int)(l_SecondAvg - l_FirstAvg);
Double l_MinDiff = Pool.MaxBlockCount * CONST_PERCENT_CHANGE_FACTOR;
if (Math.Abs(l_Diff) < l_MinDiff)
{
l_Diff = 0;
}
if (l_Diff > 0)
{
State = new PoolWatcherPoolState(PoolWatcherPoolTrend.Growing, !Pool.HasFreeBlocks(), Pool.GetBlocksInUse());
}
else
if (l_Diff == 0)
{
State = new PoolWatcherPoolState(PoolWatcherPoolTrend.NothingChanged, !Pool.HasFreeBlocks(), Pool.GetBlocksInUse());
}
else
{
State = new PoolWatcherPoolState(PoolWatcherPoolTrend.Shrinking, !Pool.HasFreeBlocks(), Pool.GetBlocksInUse());
}
m_BlocksInUseHistory.Clear();
}
}
public PoolWatcherPoolStatistic(IPoolStateProvider p_Pool)
{
Pool = p_Pool;
m_BlocksInUseHistory = new Queue <long>(CONST_MAX_QUEUE_SIZE);
State = new PoolWatcherPoolState(PoolWatcherPoolTrend.NothingChanged, false, 0);
}
protected abstract void PoolStateChanged(StreamManagerPool p_Statistic,
PoolWatcherPoolState p_OldState, PoolWatcherPoolState p_NewState);
