private void SetLoadBalancecaseRequestedCurrently(string workstationId, bool currentlyRequested)
{
LoadBalanceInfo foundInfo = FindLoadBalanceInfo(workstationId);
if (!String.IsNullOrEmpty(foundInfo.workstationId))
{
lock (_workstationLoadListLock)
{
foundInfo.caseRequestedCurrently = currentlyRequested;
}
}
}
private LoadBalanceInfo FindLoadBalanceInfo(string workstationId)
{
LoadBalanceInfo foundInfo = new LoadBalanceInfo();
foreach (LoadBalanceInfo info in _workstationLoadBalanceList)
{
if (info.workstationId == workstationId)
{
foundInfo = info;
break;
}
}
return(foundInfo);
}
private void RemoveLoadBalanceWorkstation(string workstationId)
{
lock (_workstationLoadListLock)
{
LoadBalanceInfo foundInfo = FindLoadBalanceInfo(workstationId);
if (!String.IsNullOrEmpty(foundInfo.workstationId))
{
_workstationLoadBalanceList.Remove(foundInfo);
if (foundInfo.workstationId == _loadBalanceTimerSelectedWorkstation)
{
_loadBalanceTimerSelectedWorkstation = string.Empty;
}
}
}
}
private void IncrementLoadBalanceNumRequestedCases(string workstationId, bool currentlyRequested)
{
LoadBalanceInfo foundInfo = FindLoadBalanceInfo(workstationId);
if (!String.IsNullOrEmpty(foundInfo.workstationId))
{
lock (_workstationLoadListLock)
{
foundInfo.numCasesRequested++;
foundInfo.caseRequestedCurrently = currentlyRequested;
if (foundInfo.workstationId == _loadBalanceTimerSelectedWorkstation)
{
_loadBalanceTimerSelectedWorkstation = string.Empty;
}
}
}
}
private string GetNextLoadBalanceWorkstationId(string workstation)
{
string workstationId = string.Empty;
//if there are more cases then Auto Select enabled workatations then
// go ahead and select the case requesting workstations.
if (_workstationLoadBalanceList.Count > 0)
{
if (caseList.List.CaseListTable.Count >= _workstationLoadBalanceList.Count)
{
workstationId = workstation;
}
else //else if there are more workstations than cases then start a timer and log
//workstations hat request a case within the timer time window. When the timer
//expires select a workstation that should get the next case.
{
lock (_workstationLoadListLock)
{
LoadBalanceInfo foundInfo = FindLoadBalanceInfo(workstation);
if (!string.IsNullOrEmpty(foundInfo.workstationId))
{
if (!string.IsNullOrEmpty(_loadBalanceTimerSelectedWorkstation))
{
//foundInfo.timerSelected = false;
//workstationId = foundInfo.workstationId;
workstationId = _loadBalanceTimerSelectedWorkstation;
}
else
{
foundInfo.requestedCaseWithinTimerWindow = true;
if (!_loadBalanceTimerSet)
{
_loadBalanceCheckTimer.Change(2000, Timeout.Infinite);
_loadBalanceTimerSet = true;
}
}
}
}
}
}
return(workstationId);
}
private void AddLoadBalanceWorkstation(string workstationId)
{
lock (_workstationLoadListLock)
{
LoadBalanceInfo info = FindLoadBalanceInfo(workstationId);
//if the workstation entry exist already then
//reset its number of requested cases paramter
if (String.IsNullOrEmpty(info.workstationId))
{
info.workstationId = workstationId;
_workstationLoadBalanceList.Add(info);
}
foreach (LoadBalanceInfo lInfo in _workstationLoadBalanceList)
{
lInfo.numCasesRequested = 0;
}
}
}
private void LoadBalanceCheckTimerCallback(object param)
{
bool firstFoundInfo = false;
LoadBalanceInfo selectedInfo = null;
lock (_workstationLoadListLock)
{
_loadBalanceTimerSet = false;
//timer expired select the workstation that should get the next case
foreach (LoadBalanceInfo info in _workstationLoadBalanceList)
{
if (!info.caseRequestedCurrently && info.requestedCaseWithinTimerWindow)
{
// select workstation that has the least number of cases processed
if (!firstFoundInfo)
{
firstFoundInfo = true;
selectedInfo = info;
continue;
}
if (selectedInfo.numCasesRequested > info.numCasesRequested)
{
selectedInfo = info;
}
info.requestedCaseWithinTimerWindow = false;
}
}
if (selectedInfo != null)
{
_loadBalanceTimerSelectedWorkstation = selectedInfo.workstationId;
}
}
}
private LoadBalanceInfo FindLoadBalanceInfo(string workstationId)
{
LoadBalanceInfo foundInfo = new LoadBalanceInfo();
foreach (LoadBalanceInfo info in _workstationLoadBalanceList)
{
if (info.workstationId == workstationId)
{
foundInfo = info;
break;
}
}
return foundInfo;
}
