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ch.qos.logback.classic.net.server.ServerSocketReceiver Maven / Gradle / Ivy

/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.classic.net.server;

import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.UnknownHostException;
import java.util.concurrent.Executor;

import javax.net.ServerSocketFactory;

import ch.qos.logback.classic.net.ReceiverBase;
import ch.qos.logback.core.net.AbstractSocketAppender;
import ch.qos.logback.core.net.server.ServerListener;
import ch.qos.logback.core.net.server.ServerRunner;
import ch.qos.logback.core.util.CloseUtil;

/**
 * A logging socket server that is configurable using Joran.
 *
 * @author Carl Harris
 */
public class ServerSocketReceiver extends ReceiverBase {

    /**
     * Default {@link ServerSocket} backlog
     */
    public static final int DEFAULT_BACKLOG = 50;

    private int port = AbstractSocketAppender.DEFAULT_PORT;
    private int backlog = DEFAULT_BACKLOG;

    private String address;

    private ServerSocket serverSocket;
    private ServerRunner runner;

    /**
     * Starts the server.
     */
    protected boolean shouldStart() {
        try {
            ServerSocket serverSocket = getServerSocketFactory().createServerSocket(getPort(), getBacklog(), getInetAddress());

            ServerListener listener = createServerListener(serverSocket);

            runner = createServerRunner(listener, getContext().getExecutorService());
            runner.setContext(getContext());
            return true;
        } catch (Exception ex) {
            addError("server startup error: " + ex, ex);
            CloseUtil.closeQuietly(serverSocket);
            return false;
        }
    }

    protected ServerListener createServerListener(ServerSocket socket) {
        return new RemoteAppenderServerListener(socket);
    }

    protected ServerRunner createServerRunner(ServerListener listener, Executor executor) {
        return new RemoteAppenderServerRunner(listener, executor);
    }

    @Override
    protected Runnable getRunnableTask() {
        return runner;
    }

    /**
     * {@inheritDoc}
     */
    protected void onStop() {
        try {
            if (runner == null)
                return;
            runner.stop();
        } catch (IOException ex) {
            addError("server shutdown error: " + ex, ex);
        }
    }

    /**
     * Gets the server socket factory.
     * 

* Subclasses may override to provide a custom factory. * @return server socket factory * @throws Exception */ protected ServerSocketFactory getServerSocketFactory() throws Exception { return ServerSocketFactory.getDefault(); } /** * Gets the local address for the listener. * @return an {@link InetAddress} representation of the local address. * @throws UnknownHostException */ protected InetAddress getInetAddress() throws UnknownHostException { if (getAddress() == null) return null; return InetAddress.getByName(getAddress()); } /** * Gets the local port for the listener. * @return local port */ public int getPort() { return port; } /** * Sets the local port for the listener. * @param port the local port to set */ public void setPort(int port) { this.port = port; } /** * Gets the listener queue depth. *

* This represents the number of connected clients whose connections * have not yet been accepted. * @return queue depth * @see java.net.ServerSocket */ public int getBacklog() { return backlog; } /** * Sets the listener queue depth. *

* This represents the number of connected clients whose connections * have not yet been accepted. * @param backlog the queue depth to set * @see java.net.ServerSocket */ public void setBacklog(int backlog) { this.backlog = backlog; } /** * Gets the local address for the listener. * @return a string representation of the local address */ public String getAddress() { return address; } /** * Sets the local address for the listener. * @param address a host name or a string representation of an IP address */ public void setAddress(String address) { this.address = address; } }





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