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package com.sun.grizzly;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ScheduledExecutorService;
import com.sun.grizzly.nio.DefaultNIOTransportFactory;
import com.sun.grizzly.nio.transport.UDPNIOTransport;
import com.sun.grizzly.nio.transport.TCPNIOTransport;
import com.sun.grizzly.attributes.AttributeBuilder;
import com.sun.grizzly.memory.DefaultMemoryManager;
import com.sun.grizzly.memory.MemoryManager;
import com.sun.grizzly.threadpool.DefaultScheduleThreadPool;
import com.sun.grizzly.threadpool.DefaultThreadPool;
/**
* Factory, responsible for creating and initializing Grizzly {@link Transport}s.
*
* @author Alexey Stashok
*/
public abstract class TransportFactory {
private static volatile TransportFactory instance;
/**
* Get the {@link TransportFactory} instance.
*
* @return the {@link TransportFactory} instance.
*/
public static synchronized TransportFactory getInstance() {
if (instance == null || instance.isClosed()) {
instance = new DefaultNIOTransportFactory();
}
return instance;
}
/**
* Set the {@link TransportFactory} instance.
*
* @param factory the {@link TransportFactory} instance.
*/
public static synchronized void setInstance(TransportFactory factory) {
instance = factory;
}
/**
* Create instance of TCP {@link Transport}.
*
* @return instance of TCP {@link Transport}.
*/
public abstract TCPNIOTransport createTCPTransport();
/**
* Create instance of UDP {@link Transport}.
*
* @return instance of UDP {@link Transport}.
*/
public abstract UDPNIOTransport createUDPTransport();
/**
* Is factory closed.
*/
private boolean isClosed;
/**
* Default {@link AttributeBuilder} used by all {@link Transport}s.
*/
protected AttributeBuilder defaultAttributeBuilder;
/**
* Default {@link MemoryManager} used by all {@link Transport}s.
*/
protected MemoryManager defaultMemoryManager;
/**
* Default worker thread pool, used by all {@link Transport}s.
*/
protected ExecutorService defaultWorkerThreadPool;
/**
* Default scheduled thread pool, used by all {@link Transport}s.
*/
protected ScheduledExecutorService defaultScheduledThreadPool;
protected TransportFactory() {
initialize();
}
/**
* Get default {@link AttributeBuilder}, used by all {@link Transport}s.
*
* @return default {@link AttributeBuilder}, used by all {@link Transport}s.
*/
public AttributeBuilder getDefaultAttributeBuilder() {
return defaultAttributeBuilder;
}
/**
* Set default {@link AttributeBuilder}, used by all {@link Transport}s.
*
* @param defaultAttributeBuilder default {@link AttributeBuilder},
* used by all {@link Transport}s.
*/
public void setDefaultAttributeBuilder(AttributeBuilder defaultAttributeBuilder) {
this.defaultAttributeBuilder = defaultAttributeBuilder;
}
/**
* Get default {@link MemoryManager}, used by all {@link Transport}s.
*
* @return default {@link MemoryManager}, used by all {@link Transport}s.
*/
public MemoryManager getDefaultMemoryManager() {
return defaultMemoryManager;
}
/**
* Set default {@link MemoryManager}, used by all {@link Transport}s.
*
* @param defaultMemoryManager default {@link MemoryManager},
* used by all {@link Transport}s.
*/
public void setDefaultMemoryManager(MemoryManager defaultMemoryManager) {
this.defaultMemoryManager = defaultMemoryManager;
}
/**
* Get default worker thread pool, used by all {@link Transport}s.
*
* @return default worker thread pool, used by all {@link Transport}s.
*/
public ExecutorService getDefaultWorkerThreadPool() {
return defaultWorkerThreadPool;
}
/**
* Set default worker thread pool, used by all {@link Transport}s.
*
* @param defaultThreadPool default worker thread pool,
* used by all {@link Transport}s.
*/
public void setDefaultWorkerThreadPool(ExecutorService defaultThreadPool) {
this.defaultWorkerThreadPool = defaultThreadPool;
}
/**
* Get default scheduled thread pool, used by all {@link Transport}s.
*
* @return default scheduled thread pool, used by all {@link Transport}s.
*/
public ScheduledExecutorService getDefaultScheduledThreadPool() {
return defaultScheduledThreadPool;
}
/**
* Set default scheduled thread pool, used by all {@link Transport}s.
*
* @param defaultScheduledThreadPool default scheduled thread pool,
* used by all {@link Transport}s.
*/
public void setDefaultScheduledThreadPool(
ScheduledExecutorService defaultScheduledThreadPool) {
this.defaultScheduledThreadPool = defaultScheduledThreadPool;
}
/**
* Initialize default factory settings.
*/
public void initialize() {
defaultAttributeBuilder = Grizzly.DEFAULT_ATTRIBUTE_BUILDER;
defaultMemoryManager = new DefaultMemoryManager();
defaultWorkerThreadPool = new DefaultThreadPool();
defaultScheduledThreadPool = new DefaultScheduleThreadPool();
}
/**
* Close the {@link TransportFactory} and release all resources.
*/
public synchronized void close() {
if (!isClosed()) {
isClosed = true;
if (defaultWorkerThreadPool != null) {
defaultWorkerThreadPool.shutdown();
defaultWorkerThreadPool = null;
}
if (defaultScheduledThreadPool != null) {
defaultScheduledThreadPool.shutdown();
defaultScheduledThreadPool = null;
}
}
}
/**
* Return true, if {@link TransportFactory} has been closed, or
* false otherwise.
*
* @return true, if {@link TransportFactory} has been closed, or
* false otherwise.
*/
public boolean isClosed() {
return isClosed;
}
/**
* Setup {@link Transport} with factory default settings.
*
* @param {@link Transport} type.
* @param transport {@link Transport}.
* @return {@link Transport}, initialized with default settings.
*/
protected T setupTransport(T transport) {
transport.setAttributeBuilder(defaultAttributeBuilder);
transport.setMemoryManager(defaultMemoryManager);
transport.setWorkerThreadPool(defaultWorkerThreadPool);
return transport;
}
}
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