/*
* Copyright (c) 2013 Cisco Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.config.yang.netty.eventexecutor;
import com.google.common.reflect.AbstractInvocationHandler;
import com.google.common.reflect.Reflection;
import io.netty.util.concurrent.EventExecutor;
import io.netty.util.concurrent.GlobalEventExecutor;
import io.netty.util.concurrent.ImmediateEventExecutor;
import java.lang.reflect.Method;
import java.util.concurrent.TimeUnit;
public interface AutoCloseableEventExecutor extends EventExecutor, AutoCloseable {
class CloseableEventExecutorMixin implements AutoCloseable {
public static final int DEFAULT_SHUTDOWN_SECONDS = 1;
private final EventExecutor eventExecutor;
public CloseableEventExecutorMixin(final EventExecutor eventExecutor) {
this.eventExecutor = eventExecutor;
}
@Override
public void close() throws Exception {
eventExecutor.shutdownGracefully(0, DEFAULT_SHUTDOWN_SECONDS, TimeUnit.SECONDS);
}
private static AutoCloseableEventExecutor createCloseableProxy(
final CloseableEventExecutorMixin closeableEventExecutorMixin) {
return Reflection.newProxy(AutoCloseableEventExecutor.class, new AbstractInvocationHandler() {
@Override
protected Object handleInvocation(final Object proxy, final Method method, final Object[] args) throws Throwable {
if (method.getName().equals("close")) {
closeableEventExecutorMixin.close();
return null;
} else {
return method.invoke(closeableEventExecutorMixin.eventExecutor, args);
}
}
});
}
public static AutoCloseableEventExecutor globalEventExecutor() {
return createCloseableProxy(new CloseableEventExecutorMixin(GlobalEventExecutor.INSTANCE));
}
public static AutoCloseableEventExecutor immediateEventExecutor() {
return createCloseableProxy(new CloseableEventExecutorMixin(ImmediateEventExecutor.INSTANCE));
}
public static AutoCloseableEventExecutor forwardingEventExecutor(final EventExecutor eventExecutor,
final AutoCloseable closeable) {
return createCloseableProxy(new CloseableEventExecutorMixin(eventExecutor) {
@Override
public void close() throws Exception {
// Intentional no-op.
closeable.close();
}
});
}
}
}