com.pdd.pop.ext.glassfish.grizzly.http.KeepAliveProbe Maven / Gradle / Ivy
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package com.pdd.pop.ext.glassfish.grizzly.http;
import com.pdd.pop.ext.glassfish.grizzly.Connection;
/**
* Monitoring probe providing callbacks that may be invoked by Grizzly {@link KeepAlive}.
*
* @author Alexey Stashok
*
* @since 2.0
*/
public interface KeepAliveProbe {
/**
* Method will be called, when new keep-alive HTTP connection is getting established.
* This method is getting invoked, when 1st HTTP request processing completes,
* but the Connection will be kept alive to process next HTTP request.
*
* @param connection {@link Connection}, the event belongs to.
*/
void onConnectionAcceptEvent(Connection connection);
/**
* Method will be called, when HTTP request comes on a kept alive connection.
*
* @param connection {@link Connection}, the event belongs to.
* @param requestNumber HTTP request number, being processed on the given keep-alive connection.
*/
void onHitEvent(Connection connection, int requestNumber);
/**
* Method will be called, when the Connection could be used in the keep alive mode,
* but due to KeepAlive config limitations it will be closed.
*
* @param connection {@link Connection}, the event belongs to.
*/
void onRefuseEvent(Connection connection);
/**
* Method will be called, when the keep alive Connection idle timeout expired.
*
* @param connection {@link Connection}, the event belongs to.
*/
void onTimeoutEvent(Connection connection);
// ---------------------------------------------------------- Nested Classes
/**
* {@link KeepAliveProbe} adapter that provides no-op implementations for
* all interface methods allowing easy extension by the developer.
*
* @since 2.1.9
*/
@SuppressWarnings("UnusedDeclaration")
class Adapter implements KeepAliveProbe {
// ----------------------------------------- Methods from KeepAliveProbe
/**
* {@inheritDoc}
*/
@Override
public void onConnectionAcceptEvent(Connection connection) {}
/**
* {@inheritDoc}
*/
@Override
public void onHitEvent(Connection connection, int requestNumber) {}
/**
* {@inheritDoc}
*/
@Override
public void onRefuseEvent(Connection connection) {}
/**
* {@inheritDoc}
*/
@Override
public void onTimeoutEvent(Connection connection) {}
} // END Adapter
}