package hudson;
import junit.framework.TestCase;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.io.IOException;
import java.util.concurrent.Future;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import hudson.remoting.Channel;
import hudson.remoting.FastPipedInputStream;
import hudson.remoting.FastPipedOutputStream;
/**
* Test that uses a connected channel.
*
* @author Kohsuke Kawaguchi
*/
public abstract class ChannelTestCase extends TestCase {
/**
* Two channels that are connected to each other, but shares the same classloader.
*/
protected Channel french;
protected Channel british;
private ExecutorService executors = Executors.newCachedThreadPool();
@Override
protected void setUp() throws Exception {
super.setUp();
final FastPipedInputStream p1i = new FastPipedInputStream();
final FastPipedInputStream p2i = new FastPipedInputStream();
final FastPipedOutputStream p1o = new FastPipedOutputStream(p1i);
final FastPipedOutputStream p2o = new FastPipedOutputStream(p2i);
Future<Channel> f1 = executors.submit(new Callable<Channel>() {
public Channel call() throws Exception {
return new Channel("This side of the channel", executors, p1i, p2o);
}
});
Future<Channel> f2 = executors.submit(new Callable<Channel>() {
public Channel call() throws Exception {
return new Channel("The other side of the channel", executors, p2i, p1o);
}
});
french = f1.get();
british = f2.get();
}
@Override
protected void tearDown() throws Exception {
try {
french.close(); // this will automatically initiate the close on the other channel, too.
french.join();
british.join();
} catch (IOException e) {
// perhaps this exception is caused by earlier abnormal termination of the channel?
/* for the record, this is the failure.
Nov 12, 2009 6:18:55 PM hudson.remoting.Channel$CloseCommand execute
SEVERE: close command failed on This side of the channel
java.io.IOException: Pipe is already closed
at hudson.remoting.FastPipedOutputStream.write(FastPipedOutputStream.java:127)
at java.io.ObjectOutputStream$BlockDataOutputStream.drain(ObjectOutputStream.java:1838)
at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(ObjectOutputStream.java:1747)
at java.io.ObjectOutputStream.writeNonProxyDesc(ObjectOutputStream.java:1249)
at java.io.ObjectOutputStream.writeClassDesc(ObjectOutputStream.java:1203)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1387)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)
at java.io.ObjectOutputStream.writeFatalException(ObjectOutputStream.java:1538)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:329)
at hudson.remoting.Channel.send(Channel.java:413)
at hudson.remoting.Channel.close(Channel.java:717)
at hudson.remoting.Channel$CloseCommand.execute(Channel.java:676)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:860)
Caused by: hudson.remoting.FastPipedInputStream$ClosedBy: The pipe was closed at...
at hudson.remoting.FastPipedInputStream.close(FastPipedInputStream.java:103)
at java.io.ObjectInputStream$PeekInputStream.close(ObjectInputStream.java:2305)
at java.io.ObjectInputStream$BlockDataInputStream.close(ObjectInputStream.java:2643)
at java.io.ObjectInputStream.close(ObjectInputStream.java:873)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:866)
Nov 12, 2009 6:18:55 PM hudson.remoting.Channel$CloseCommand execute
INFO: close command created at
Command close created at
at hudson.remoting.Command.<init>(Command.java:58)
at hudson.remoting.Command.<init>(Command.java:47)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:673)
at hudson.remoting.Channel$CloseCommand.<init>(Channel.java:673)
at hudson.remoting.Channel.close(Channel.java:717)
at hudson.remoting.Channel$CloseCommand.execute(Channel.java:676)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:860)
Nov 12, 2009 6:18:55 PM hudson.remoting.Channel$ReaderThread run
SEVERE: I/O error in channel This side of the channel
java.io.EOFException
at java.io.ObjectInputStream$BlockDataInputStream.peekByte(ObjectInputStream.java:2554)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1297)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at hudson.remoting.Channel$ReaderThread.run(Channel.java:849)
*/
e.printStackTrace();
}
executors.shutdownNow();
}
}