The jagtool getservicestate command returns the state of service components executing in the server. You must code your service component to implement the methods of the CtsServices::ExtendedService interface to allow users to query the component state with jagtool.
This interface extends CtsServices::GenericServices, and adds one method:
long getServiceState()
This method must return one of the constants listed in Table 33-1 to describe the state of the service. These constants are defined in module CtsServices.
The following Java example shows service component code that determines and returns state:
import CtsServices.*;
...
public class MyService
{
private static boolean _starting = false;
private static boolean _running = false;
private static boolean _stopping = false;
private static boolean _stop = false;
private static boolean _runHasBeenCalled = false;
private static Object _lock = new Object();
public void start()
{
_starting = true;
// Perform initialization
_starting = false;
}
public void stop()
{
_stopping = true;
_running = false;
_stop = true;
synchronized (_lock)
{
_lock.notifyAll();
}
// Perform cleanup
_stopping = false;
}
public void run()
{
_runHasBeenCalled = true;
// Perform per-thread initialization here.
_running = true;
while (! _stop)
{
try
{
// do whatever this service does on
// each iteration
synchronized(_lock)
{
_lock.wait(100000);
}
}
catch (InterruptedException ie)
{
_stop = true;
}
}
// Perform per-thread cleanup here.
_running = false;
}
public int getServiceState()
{
if (_starting)
{
return SERVICE_STATE_STARTING.value;
}
else if (! _runHasBeenCalled)
{
return SERVICE_STATE_STARTED.value;
}
else if (_stopping)
{
return SERVICE_STATE_STOPPING.value;
}
else if (_stop)
{
return SERVICE_STATE_STOPPED.value;
}
else if (_running)
{
return SERVICE_STATE_RUNNING.value;
}
else
{
return SERVICE_STATE_FINISHED.value;
}
}
}
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