/*
* Copyright 2011 LMAX Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.lmax.disruptor.dsl;
import com.lmax.disruptor.EventHandler;
import com.lmax.disruptor.EventProcessor;
import com.lmax.disruptor.Sequence;
import com.lmax.disruptor.SequenceBarrier;
import java.util.concurrent.Executor;
Wrapper class to tie together a particular event processing stage
Tracks the event processor instance, the event handler instance, and sequence barrier which the stage is attached to.
Type parameters: - <T> – the type of the configured
EventHandler
/**
* <p>Wrapper class to tie together a particular event processing stage</p>
* <p>
* <p>Tracks the event processor instance, the event handler instance, and sequence barrier which the stage is attached to.</p>
*
* @param <T> the type of the configured {@link EventHandler}
*/
class EventProcessorInfo<T> implements ConsumerInfo
{
private final EventProcessor eventprocessor;
private final EventHandler<? super T> handler;
private final SequenceBarrier barrier;
private boolean endOfChain = true;
EventProcessorInfo(
final EventProcessor eventprocessor, final EventHandler<? super T> handler, final SequenceBarrier barrier)
{
this.eventprocessor = eventprocessor;
this.handler = handler;
this.barrier = barrier;
}
public EventProcessor getEventProcessor()
{
return eventprocessor;
}
@Override
public Sequence[] getSequences()
{
return new Sequence[]{eventprocessor.getSequence()};
}
public EventHandler<? super T> getHandler()
{
return handler;
}
@Override
public SequenceBarrier getBarrier()
{
return barrier;
}
@Override
public boolean isEndOfChain()
{
return endOfChain;
}
@Override
public void start(final Executor executor)
{
executor.execute(eventprocessor);
}
@Override
public void halt()
{
eventprocessor.halt();
}
/**
*
*/
@Override
public void markAsUsedInBarrier()
{
endOfChain = false;
}
@Override
public boolean isRunning()
{
return eventprocessor.isRunning();
}
}