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Ice is a comprehensive RPC framework that helps you build distributed applications with minimal effort using familiar object-oriented idioms
// **********************************************************************
//
// Copyright (c) 2003-2018 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
package IceMX;
import IceInternal.MetricsMap;
public class Observer extends IceUtilInternal.StopWatch implements Ice.Instrumentation.Observer
{
public interface MetricsUpdate
{
void update(T m);
}
@Override
public void
attach()
{
if(!isStarted())
{
start();
}
}
@Override
public void
detach()
{
long lifetime = _previousDelay + stop();
for(MetricsMap.Entry e : _objects)
{
e.detach(lifetime);
}
}
@Override
public void
failed(String exceptionName)
{
for(MetricsMap.Entry e : _objects)
{
e.failed(exceptionName);
}
}
public void
forEach(MetricsUpdate u)
{
for(MetricsMap.Entry e : _objects)
{
e.execute(u);
}
}
public void
init(MetricsHelper helper, java.util.List.Entry> objects, Observer previous)
{
_objects = objects;
if(previous == null)
{
return;
}
_previousDelay = previous._previousDelay + previous.delay();
//
// Detach entries from previous observer which are no longer
// attached to this new observer.
//
for(MetricsMap.Entry p : previous._objects)
{
if(!_objects.contains(p))
{
p.detach(_previousDelay);
}
}
}
public > ObserverImpl
getObserver(String mapName, MetricsHelper helper, Class mcl, Class ocl)
{
java.util.List.Entry> metricsObjects = null;
for(MetricsMap.Entry entry : _objects)
{
MetricsMap.Entry e = entry.getMatching(mapName, helper, mcl);
if(e != null)
{
if(metricsObjects == null)
{
metricsObjects = new java.util.ArrayList.Entry>(_objects.size());
}
metricsObjects.add(e);
}
}
if(metricsObjects == null)
{
return null;
}
try
{
ObserverImpl obsv = ocl.getDeclaredConstructor().newInstance();
obsv.init(helper, metricsObjects, null);
return obsv;
}
catch(Exception ex)
{
assert(false);
return null;
}
}
public MetricsMap.Entry
getEntry(MetricsMap map)
{
for(MetricsMap.Entry e : _objects)
{
if(e.getMap() == map)
{
return e;
}
}
return null;
}
private java.util.List.Entry> _objects;
private long _previousDelay = 0;
}