// create data center
public bool AddDataCenter(DataCenterVM dataCenter, out string msg)
{
DataCenterLocation d = _context.DataCenterLocation.Where(a => a.Location == dataCenter.Location)
.FirstOrDefault();
if (d != null)
{
msg = "Data Center name already exist.";
return(false);
}
try
{
DataCenterLocation newDataCenter = new DataCenterLocation();
newDataCenter.Location = dataCenter.Location;
_context.DataCenterLocation.Add(newDataCenter);
_context.SaveChanges();
msg = "Data Center successfully added";
return(true);
}
catch
{
msg = "Failed to add data center.";
return(false);
}
}
// update data center
public bool EditDataCenter(DataCenterVM dataCenter, out string msg)
{
DataCenterLocation d = _context.DataCenterLocation.Where(a => a.Location == dataCenter.Location).FirstOrDefault();
if (d != null)
{
if (d.LocationID != dataCenter.LocationID)
{
msg = "Data Center name already exist.";
return(false);
}
}
DataCenterLocation original = _context.DataCenterLocation.Where(a => a.LocationID == dataCenter.LocationID).FirstOrDefault();
bool changed = original.Location != dataCenter.Location;
// check if any data center info changed
if (changed)
{
try
{
DataCenterLocation dataCenterUpdated = _context.DataCenterLocation
.Where(a => a.LocationID == dataCenter.LocationID)
.FirstOrDefault();
dataCenterUpdated.Location = dataCenter.Location;
dataCenterUpdated.LocationID = dataCenter.LocationID;
_context.SaveChanges();
msg = "Data Center information succesfully updated.";
return(true);
}
catch
{
msg = "Failed to update data center.";
return(false);
}
}
else
{
msg = "Information is identical, no update performed.";
return(false);
}
}
// delete data center
public bool DeleteDataCenter(int referenceID, out string msg)
{
DataCenterLocation dataCenterToBeDeleted = _context.DataCenterLocation
.Where(a => a.LocationID == referenceID)
.FirstOrDefault();
// check servers associated with the data center
var dataCenterServers = _context.Server
.Where(a => a.LocationID == referenceID)
.FirstOrDefault();
IEnumerable <Server> allDataCenterServer = dataCenterToBeDeleted.Servers;
if (dataCenterToBeDeleted == null)
{
msg = "Data Center could not be deleted.";
return(false);
}
if (allDataCenterServer.Count() > 0)
{
msg = "Data Center has Server(s) associated, cannot be deleted";
return(false);
}
try
{
_context.DataCenterLocation.Remove(dataCenterToBeDeleted);
_context.SaveChanges();
msg = "Data Center Successfully Deleted";
return(true);
}
catch
{
msg = "Failed to update Data Center.";
return(false);
}
}