// **** Methods ****
public static Dictionary <string, string> GetDictionary(MySqlConnection con)
{
string strCommandText = SelectAllCommand;
using (MySqlCommand cmd = new MySqlCommand(strCommandText, con))
{
using (MySqlDataReader reader = cmd.ExecuteReader())
{
Dictionary <string, string> dict = new Dictionary <string, string>();
while (reader.Read())
{
SystemConfigurationEntry sce = new SystemConfigurationEntry(reader, false);
dict.Add(sce.Name, sce.Value);
}
return(dict);
}
}
}
public void Run()
{
LogToConsole(@"Flare main loop: start");
lock (this)
{
m_eServiceStatus = FlareServiceStatus.Started;
}
try
{
m_pqWaitingTargets.Clear();
m_qTargetsReadyForTesting.Clear();
ReadTargetsFromDatabase();
MySqlConnection con = DatabaseConnectionProvider.GetMySqlConnection();
m_lstAllContacts = Contact.GetAllContacts(con);
m_dictSystemConfigurationEntries = SystemConfigurationEntry.GetDictionary(con);
if (m_pqWaitingTargets.IsEmpty())
{
LogToConsole(@"Aborting: The priority queue is empty; there are no servers to monitor.");
return;
}
// The main loop begins here.
TimeSpan tsOneSecond = new TimeSpan(0, 0, 1);
TimeSpan tsLoopPeriod = new TimeSpan(0, 0, 1);
bool bLimitNumberOfMainLoopIterations = (NumberOfMainLoopIterations > 0);
LogToConsole(@"Starting the main loop...");
for (int nMainLoopIterationNumber = 0;
!bLimitNumberOfMainLoopIterations || nMainLoopIterationNumber < NumberOfMainLoopIterations;
++nMainLoopIterationNumber)
{
DateTime dtNow = DateTime.UtcNow;
LogToConsole(string.Format(@"It is now {0}.", dtNow.ToLongTimeString()));
if (m_pqWaitingTargets.IsEmpty())
{
LogToConsole(@"The priority queue is empty; sleeping for one second.");
System.Threading.Thread.Sleep(tsOneSecond);
continue;
}
Target targetHead = m_pqWaitingTargets.Peek();
LogToConsole(string.Format(@"The target at the head of the queue ('{0}') is due to be tested at {1}.",
targetHead.Name, targetHead.DateTimeOfNextMonitor.ToLongTimeString()));
if (dtNow < targetHead.DateTimeOfNextMonitor)
{
TimeSpan tsDifference = targetHead.DateTimeOfNextMonitor - dtNow;
TimeSpan tsTimeSpanToSleep = (tsDifference < tsLoopPeriod) ? tsDifference : tsLoopPeriod;
LogToConsole(string.Format(@"It is not yet time to test the target at the head of the queue. Sleeping for {0} seconds and {1} milliseconds...",
tsTimeSpanToSleep.Seconds, tsTimeSpanToSleep.Milliseconds));
System.Threading.Thread.Sleep(tsTimeSpanToSleep);
continue;
}
lock (m_qTargetsReadyForTesting)
{
m_qTargetsReadyForTesting.Enqueue(m_pqWaitingTargets.Dequeue());
}
#if MULTITHREAD_TARGET_TESTING
// Note: There is also a delegate named ParameterizedThreadStart; perhaps it may be useful
// in allowing us to pass a TargetInfo object as a parameter, thus avoiding the m_qTargetsReadyForTesting queue.
Thread thread = new Thread(new ThreadStart(ThreadMain_TestTarget));
thread.Start();
#else
ThreadMain_TestTarget();
#endif
lock (this)
{
if (m_eServiceStatus == FlareServiceStatus.StopRequested)
{
break;
}
}
}
}
catch (Exception ex)
{
LogToConsole(string.Format(@"{0} caught: {1}", ex.GetType().FullName, ex.Message));
}
lock (this)
{
m_eServiceStatus = FlareServiceStatus.Stopped;
}
LogToConsole(@"Flare main loop: end");
}