Examples of io.netty.handler.execution.ExecutionHandler

io.netty.handler.execution.ExecutionHandler

be shared new DatabaseQueryingHandler()); } } ... public static void main(String[] args) { {@link ServerBootstrap} bootstrap = ...;... {@link ExecutionHandler} executionHandler = new {@link ExecutionHandler}( new {@link OrderedMemoryAwareThreadPoolExecutor}(16, 1048576, 1048576)) bootstrap.setPipelineFactory( new DatabaseGatewayPipelineFactory(executionHandler)); ... bootstrap.bind(...); ... while (!isServerReadyToShutDown()) { // ... wait ... } bootstrap.releaseExternalResources(); executionHandler.releaseExternalResources(); } Please refer to {@link OrderedMemoryAwareThreadPoolExecutor} for thedetailed information about how the event order is guaranteed.

SEDA (Staged Event-Driven Architecture)

You can implement an alternative thread model such as SEDA by adding more than one {@link ExecutionHandler} to the pipeline.

Using other {@link Executor} implementation

Although it's recommended to use {@link OrderedMemoryAwareThreadPoolExecutor}, you can use other {@link Executor} implementations. However, you must notethat other {@link Executor} implementation might break your applicationbecause they often do not maintain event execution order nor interact with I/O threads to control the incoming traffic and avoid {@link OutOfMemoryError}. @apiviz.landmark @apiviz.has java.util.concurrent.ThreadPoolExecutor

        ServerBootstrap bootstrap = new ServerBootstrap(
                new SctpServerSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        final ExecutionHandler executionHandler = new ExecutionHandler(
                new OrderedMemoryAwareThreadPoolExecutor(16, 1048576, 1048576));


        // Set up the pipeline factory.
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
            @Override

public class LocalServerPipelineFactory implements ChannelPipelineFactory {


    private final ExecutionHandler executionHandler;


    public LocalServerPipelineFactory(Executor eventExecutor) {
        executionHandler = new ExecutionHandler(eventExecutor);
    }

        ClientBootstrap bootstrap = new ClientBootstrap(
                new SctpClientSocketChannelFactory(
                        Executors.newCachedThreadPool(),
                        Executors.newCachedThreadPool()));


        final ExecutionHandler executionHandler = new ExecutionHandler(
                new OrderedMemoryAwareThreadPoolExecutor(16, 1048576, 1048576));


        // Set up the pipeline factory.
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
            @Override