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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
SynchToAsynchChannelServerAdapter.java | 47.1% | 65.1% | 85.7% | 62.2% |
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/**
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*
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* Copyright 2004 Protique Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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**/
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package org.activeio.adapter;
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import java.io.IOException;
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import java.io.InterruptedIOException;
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import java.net.URI;
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import org.activeio.AcceptListener;
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import org.activeio.AsynchChannelServer;
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import org.activeio.Channel;
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import org.activeio.ChannelFactory;
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import org.activeio.ChannelServer;
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import org.activeio.Disposable;
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import org.activeio.Service;
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import org.activeio.SynchChannelServer;
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import EDU.oswego.cs.dl.util.concurrent.Executor;
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import EDU.oswego.cs.dl.util.concurrent.Latch;
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import EDU.oswego.cs.dl.util.concurrent.SynchronizedBoolean;
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/**
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* Adapts a {@see org.activeio,SynchChannelServer} so that it provides an
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* {@see org.activeio.AsynchChannelServer} interface. When this channel
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* is started, a background thread is used to poll the (@see org.activeio.SynchChannelServer}
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* for accepted channel connections which are then delivered to the {@see org.activeio.AcceptConsumer}.
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*
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* @version $Revision$
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*/
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final public class SynchToAsynchChannelServerAdapter implements AsynchChannelServer, Runnable { |
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private final SynchChannelServer synchChannelServer;
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private final SynchronizedBoolean running = new SynchronizedBoolean(false); |
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private final Executor executor;
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private AcceptListener acceptListener;
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private Latch doneLatch;
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static public AsynchChannelServer adapt(ChannelServer channel) { |
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return adapt(channel, ChannelFactory.DEFAULT_EXECUTOR);
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} |
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static public AsynchChannelServer adapt(ChannelServer channel, Executor executor) { |
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// It might not need adapting
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if( channel instanceof AsynchChannelServer ) { |
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return (AsynchChannelServer) channel;
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} |
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// Can we just just undo the adaptor
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if( channel.getClass() == SynchToAsynchChannelAdapter.class ) { |
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return ((AsynchToSynchChannelServerAdapter)channel).getAsynchChannelServer();
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} |
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return new SynchToAsynchChannelServerAdapter((SynchChannelServer)channel, executor); |
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} |
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public SynchToAsynchChannelServerAdapter(SynchChannelServer synchServer) {
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this(synchServer, ChannelFactory.DEFAULT_EXECUTOR);
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} |
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public SynchToAsynchChannelServerAdapter(SynchChannelServer synchServer, Executor executor) {
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this.synchChannelServer = synchServer;
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this.executor=executor;
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} |
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synchronized public void start() throws IOException { |
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if (running.commit(false, true)) { |
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if( acceptListener == null ) |
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throw new IllegalStateException("AcceptListener must be set before object can be started."); |
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synchChannelServer.start(); |
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try {
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doneLatch = new Latch();
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executor.execute(this);
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} catch (InterruptedException e) {
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throw new InterruptedIOException(e.getMessage()); |
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} |
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} |
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} |
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synchronized public void stop(long timeout) throws IOException { |
101 | 30 |
if (running.commit(true, false)) { |
102 | 30 |
try {
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if( timeout == NO_WAIT_TIMEOUT ) {
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synchChannelServer.stop(NO_WAIT_TIMEOUT); |
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} else if( timeout == WAIT_FOREVER_TIMEOUT ) { |
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doneLatch.acquire(); |
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synchChannelServer.stop(WAIT_FOREVER_TIMEOUT); |
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} else {
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long start = System.currentTimeMillis();
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if( doneLatch.attempt(timeout) ) {
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timeout -= (System.currentTimeMillis() - start); |
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} else {
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timeout=0; |
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} |
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if( timeout <= 0 ) {
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synchChannelServer.stop(NO_WAIT_TIMEOUT); |
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} else {
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synchChannelServer.stop(timeout); |
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} |
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} |
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} catch (IOException e) {
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throw e;
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} catch (Throwable e) {
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throw (IOException)new IOException("stop failed: " + e.getMessage()).initCause(e); |
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} |
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} |
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} |
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public void run() { |
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// Change the thread name.
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String oldName = Thread.currentThread().getName(); |
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Thread.currentThread().setName( synchChannelServer.toString() ); |
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try {
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while (running.get()) {
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try {
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Channel channel = synchChannelServer.accept(500); |
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if( channel == null ) |
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continue;
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acceptListener.onAccept(channel); |
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} catch (IOException e) {
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if( running.get() )
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acceptListener.onAcceptError(e); |
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} catch (Throwable e) {
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if( running.get() )
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acceptListener.onAcceptError((IOException)new IOException("Unexpected Error: "+e).initCause(e)); |
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} |
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} |
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} finally {
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if( doneLatch!=null ) |
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doneLatch.release(); |
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Thread.currentThread().setName(oldName); |
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} |
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} |
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/**
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* @see org.activeio.AsynchChannelServer#setAcceptListener(org.activeio.AcceptListener)
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*/
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public void setAcceptListener(AcceptListener acceptListener) { |
163 | 30 |
if(running.get())
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throw new IllegalStateException("Cannot change the AcceptListener while the object is running."); |
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this.acceptListener = acceptListener;
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} |
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/**
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* @see org.activeio.Disposable#dispose()
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*/
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public void dispose() { |
172 | 30 |
try {
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stop(Service.NO_WAIT_TIMEOUT); |
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} catch ( IOException ignore) {
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} |
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if( synchChannelServer instanceof Disposable ) { |
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((Disposable)synchChannelServer).dispose(); |
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} |
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} |
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public URI getBindURI() {
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return synchChannelServer.getBindURI();
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} |
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185 | 64 |
public URI getConnectURI() {
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return synchChannelServer.getConnectURI();
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} |
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public SynchChannelServer getSynchChannelServer() {
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return synchChannelServer;
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} |
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public Object narrow(Class target) {
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if( target.isAssignableFrom(getClass()) ) {
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return this; |
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} |
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return synchChannelServer.narrow(target);
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} |
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public String toString() {
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return synchChannelServer.toString();
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} |
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} |
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