/// <summary>
///
/// </summary>
public virtual void Run()
{
log.LogInformation("starting to acquire async jobs due");
Thread.CurrentThread.Name = "activiti-acquire-timer-jobs";
ICommandExecutor commandExecutor = asyncExecutor.ProcessEngineConfiguration.CommandExecutor;
while (!isInterrupted)
{
try
{
AcquiredTimerJobEntities acquiredJobs = commandExecutor.Execute(new AcquireTimerJobsCmd(asyncExecutor));
if (!(acquiredJobs is null))
{
commandExecutor.Execute(new CommandAnonymousInnerClass(this, acquiredJobs));
// if all jobs were executed
millisToWait = asyncExecutor.DefaultTimerJobAcquireWaitTimeInMillis;
int jobsAcquired = acquiredJobs.Size();
if (jobsAcquired >= asyncExecutor.MaxTimerJobsPerAcquisition)
{
millisToWait = 0;
}
}
}
catch (ActivitiOptimisticLockingException optimisticLockingException)
{
if (log.IsEnabled(LogLevel.Debug))
{
log.LogDebug($@"Optimistic locking exception during timer job acquisition.
If you have multiple timer executors running against the same database,
this exception means that this thread tried to acquire a timer job,
which already was acquired by another timer executor acquisition thread.
This is expected behavior in a clustered environment.
You can ignore this message if you indeed have multiple timer executor acquisition threads running against the same database.
Exception message: {optimisticLockingException.Message}");
}
}
catch (ObjectDisposedException ex)
{
if (log.IsEnabled(LogLevel.Debug))
{
log.LogDebug($@"Optimistic locking exception during timer job acquisition.
If you have multiple timer executors running against the same database,
this exception means that this thread tried to acquire a timer job,
which already was acquired by another timer executor acquisition thread.
This is expected behavior in a clustered environment.
You can ignore this message if you indeed have multiple timer executor acquisition threads running against the same database.
Exception message: {ex.Message}");
}
}
catch (Exception e)
{
log.LogError($"exception during timer job acquisition: {e.Message}");
millisToWait = asyncExecutor.DefaultTimerJobAcquireWaitTimeInMillis;
}
if (millisToWait > 0)
{
try
{
if (log.IsEnabled(LogLevel.Debug))
{
log.LogDebug($"timer job acquisition thread sleeping for {millisToWait} millis");
}
lock (MONITOR)
{
if (!isInterrupted)
{
isWaiting = true;
Monitor.Wait(MONITOR, TimeSpan.FromMilliseconds(millisToWait));
}
}
if (log.IsEnabled(LogLevel.Debug))
{
log.LogDebug("timer job acquisition thread woke up");
}
}
catch (Exception e)
{
if (log.IsEnabled(LogLevel.Debug))
{
log.LogDebug("timer job acquisition wait interrupted");
}
}
finally
{
isWaiting = false;
}
}
}
log.LogInformation("stopped async job due acquisition");
}
public CommandAnonymousInnerClass(AcquireTimerJobsRunnable outerInstance, AcquiredTimerJobEntities acquiredJobs)
{
this.outerInstance = outerInstance;
this.acquiredJobs = acquiredJobs;
}