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package org.activeio.net;
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import java.io.IOException;
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import java.lang.reflect.InvocationHandler;
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import java.lang.reflect.InvocationTargetException;
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import java.lang.reflect.Method;
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import java.lang.reflect.Proxy;
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import java.net.URI;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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import org.activeio.AsynchChannel;
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import org.activeio.AsynchChannelFactory;
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import org.activeio.AsynchChannelListener;
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import org.activeio.AsynchChannelServer;
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import org.activeio.Packet;
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36
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38
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40
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final public class VMPipeAsynchChannelFactory implements AsynchChannelFactory {
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48
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private static final String SERVER_MAP_LOCATION = VMPipeAsynchChannelFactory.class.getName() + ".SERVER_MAP";
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private static final Map SERVER_MAP;
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static {
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6
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Map m = null;
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6
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m = (Map) System.getProperties().get(SERVER_MAP_LOCATION);
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6
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if (m == null) {
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m = Collections.synchronizedMap(new HashMap());
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6
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System.getProperties().put(SERVER_MAP_LOCATION, m);
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}
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SERVER_MAP = m;
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}
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private final static ClassLoader MY_CLASSLOADER = Packet.class.getClassLoader();
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63
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64
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static public class ClassloaderAsynchChannelAdapter implements AsynchChannel {
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private final ClassLoader cl;
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private final Object channel;
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private final Method writeMethod;
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private final Method setListenerMethod;
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private final Class listenerClazz;
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private final Class packetClazz;
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private final Object listenerProxy;
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private final Method duplicateMethod;
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private final Method startMethod;
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private final Method stopMethod;
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private final Method disposeMethod;
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private AsynchChannelListener channelListener;
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public class ListenerProxyHandler implements InvocationHandler {
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10
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public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
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10
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switch (method.getName().length()) {
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case 8:
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4
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Object packet = duplicateMethod.invoke(args[0], new Object[]{MY_CLASSLOADER});
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4
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channelListener.onPacket((Packet) packet);
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4
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break;
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case 13:
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6
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channelListener.onPacketError((IOException) args[0]);
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break;
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default:
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0
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channelListener.onPacketError(new IOException("Unknown proxy method invocation: "+method.getName()));
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}
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10
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return null;
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}
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}
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6
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public ClassloaderAsynchChannelAdapter(Object channel) throws SecurityException, NoSuchMethodException,
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ClassNotFoundException {
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6
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this.channel = channel;
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6
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Class clazz = channel.getClass();
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cl = clazz.getClassLoader();
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listenerClazz = cl.loadClass(AsynchChannelListener.class.getName());
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packetClazz = cl.loadClass(Packet.class.getName());
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writeMethod = clazz.getMethod("write", new Class[] { packetClazz });
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startMethod = clazz.getMethod("start", new Class[] { });
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stopMethod = clazz.getMethod("stop", new Class[] { long.class });
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6
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disposeMethod = clazz.getMethod("dispose", new Class[] { });
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113
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6
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setListenerMethod = clazz.getMethod("setAsynchChannelListener", new Class[] { listenerClazz });
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6
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duplicateMethod = packetClazz.getMethod("duplicate", new Class[] { ClassLoader.class });
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ListenerProxyHandler handler = new ListenerProxyHandler();
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listenerProxy = Proxy.newProxyInstance(cl, new Class[] { listenerClazz }, handler);
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}
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120
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2004
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public void write(Packet packet) throws IOException {
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2004
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callIOExceptionMethod(writeMethod, new Object[] { packet.duplicate(cl) });
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}
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6
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public void setAsynchChannelListener(AsynchChannelListener channelListener) {
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6
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this.channelListener = channelListener;
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6
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callMethod(setListenerMethod, new Object[] { channelListener == null ? null : listenerProxy });
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}
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129
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0
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public AsynchChannelListener getAsynchChannelListener() {
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0
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return channelListener;
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}
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133
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8
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public void dispose() {
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8
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callMethod(disposeMethod, new Object[] { });
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}
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137
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6
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public void start() throws IOException {
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6
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callIOExceptionMethod(startMethod, new Object[] {});
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}
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0
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public void stop(long timeout) throws IOException {
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0
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callIOExceptionMethod(stopMethod, new Object[] {new Long(timeout)});
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}
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145
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14
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private void callMethod(Method method, Object[] args) {
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14
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try {
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14
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method.invoke(channel, args);
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} catch (InvocationTargetException e) {
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0
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if (e.getTargetException() instanceof RuntimeException) {
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0
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throw (RuntimeException) e.getTargetException();
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}
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0
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throw new RuntimeException(e.getTargetException());
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} catch (Throwable e) {
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0
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throw new RuntimeException("Reflexive invocation failed: " + e, e);
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}
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}
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157
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158
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2010
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private void callIOExceptionMethod(Method method, Object[] args) throws IOException {
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2010
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try {
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2010
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method.invoke(channel, args);
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} catch (InvocationTargetException e) {
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162
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0
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if (e.getTargetException() instanceof IOException) {
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0
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throw (IOException) e.getTargetException();
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164
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}
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165
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0
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if (e.getTargetException() instanceof RuntimeException) {
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166
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0
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throw (RuntimeException) e.getTargetException();
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167
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}
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168
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0
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throw new RuntimeException(e.getTargetException());
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} catch (Throwable e) {
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0
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throw (IOException) new IOException("Reflexive invocation failed: " + e).initCause(e);
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}
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}
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173
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174
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175
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176
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177
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178
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6
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public Object narrow(Class target) {
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179
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6
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if (target.isAssignableFrom(getClass())) {
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180
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0
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return this;
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181
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}
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182
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6
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return null;
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183
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}
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184
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185
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2003
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public void flush() throws IOException {
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186
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}
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187
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188
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}
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189
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190
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private boolean forceRefelection;
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191
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192
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16
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public AsynchChannel openAsynchChannel(URI location) throws IOException {
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193
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194
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16
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Object server = lookupServer(location);
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195
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16
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if (!forceRefelection && server.getClass() == VMPipeAsynchChannelServer.class) {
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196
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10
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return ((VMPipeAsynchChannelServer) server).connect();
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197
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}
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198
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199
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200
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201
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6
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try {
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202
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6
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Method method = server.getClass().getMethod("connect", new Class[] {});
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203
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6
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Object channel = method.invoke(server, new Object[] {});
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204
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6
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return new ClassloaderAsynchChannelAdapter(channel);
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205
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} catch (Throwable e) {
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206
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0
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throw (IOException) new IOException("Connection could not be established: " + e).initCause(e);
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207
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}
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208
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}
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209
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210
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16
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public AsynchChannelServer bindAsynchChannel(URI bindURI) throws IOException {
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211
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16
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VMPipeAsynchChannelServer server = new VMPipeAsynchChannelServer(bindURI);
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212
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16
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bindServer(bindURI, server);
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213
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16
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return server;
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214
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}
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215
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216
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64
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private static Map getServerMap() {
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217
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64
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return SERVER_MAP;
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218
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}
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219
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220
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48
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static public String getServerKeyForURI(URI location) {
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221
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48
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return location.getHost();
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222
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}
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223
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224
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16
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public static void bindServer(URI bindURI, VMPipeAsynchChannelServer server) throws IOException {
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225
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16
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String key = getServerKeyForURI(bindURI);
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226
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16
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if (getServerMap().get(key) != null)
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227
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0
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throw new IOException("Server is allready bound at: " + bindURI);
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228
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16
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getServerMap().put(key, server);
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229
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}
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230
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|
231
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16
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public static Object lookupServer(URI location) throws IOException {
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232
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16
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String key = getServerKeyForURI(location);
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233
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16
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Object server = getServerMap().get(key);
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234
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16
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if (server == null) {
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235
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0
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throw new IOException("Connection refused.");
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236
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}
|
237
|
16
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return server;
|
238
|
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}
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239
|
|
|
240
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16
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public static void unbindServer(URI bindURI) {
|
241
|
16
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String key = getServerKeyForURI(bindURI);
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242
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16
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getServerMap().remove(key);
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243
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}
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244
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245
|
0
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public boolean isForceRefelection() {
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246
|
0
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return forceRefelection;
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247
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}
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248
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|
249
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12
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public void setForceRefelection(boolean forceRefelection) {
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250
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12
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this.forceRefelection = forceRefelection;
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251
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}
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252
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253
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}
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254
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