Examples of hudson.remoting.Pipe

hudson.remoting.Pipe
Pipe for the remote {@link Callable} and the local program to talk to each other.

There are two kinds of pipes. One is for having a local system write to a remote system, and the other is for having a remote system write to a local system. Use the different versions of the create method to create the appropriate kind of pipes.

Once created, {@link Pipe} can be sent to the remote system as a part of a serialization of{@link Callable} between {@link Channel}s. Once re-instantiated on the remote {@link Channel}, pipe automatically connects back to the local instance and perform necessary set up.

The local and remote system can then call {@link #getIn()} and {@link #getOut()} toread/write bytes.

Pipe can be only written by one system and read by the other system. It is an error to send one {@link Pipe} to two remote {@link Channel}s, or send one {@link Pipe} tothe same {@link Channel} twice.

Usage
```
 final Pipe p = Pipe.createLocalToRemote(); channel.callAsync(new Callable() { public Object call() { InputStream in = p.getIn(); ... read from in ... } }); OutputStream out = p.getOut(); ... write to out ... 
```
Implementation Note

For better performance, {@link Pipe} uses lower-level {@link Command} abstractionto send data, instead of typed proxy object. This allows the writer to send data without blocking until the arrival of the data is confirmed. @author Kohsuke Kawaguchi

     *
     * @return
     *      identity of the server represented as a public key.
     */
    public PublicKey authenticate(Iterable<KeyPair> privateKeys) throws IOException, GeneralSecurityException {
        Pipe c2s = Pipe.createLocalToRemote();
        Pipe s2c = Pipe.createRemoteToLocal();
        entryPoint.authenticate("ssh",c2s, s2c);
        Connection c = new Connection(s2c.getIn(), c2s.getOut());


        try {
            byte[] sharedSecret = c.diffieHellman(false).generateSecret();
            PublicKey serverIdentity = c.verifyIdentity(sharedSecret);

View Full Code Here

     */
    public InputStream read() throws IOException {
        if(channel==null)
            return new FileInputStream(new File(remote));


        final Pipe p = Pipe.createRemoteToLocal();
        channel.callAsync(new Callable<Void,IOException>() {
            public Void call() throws IOException {
                FileInputStream fis=null;
                try {
                    fis = new FileInputStream(new File(remote));
                    Util.copyStream(fis,p.getOut());
                    return null;
                } finally {
                    IOUtils.closeQuietly(fis);
                    IOUtils.closeQuietly(p.getOut());
                }
            }
        });


        return p.getIn();
    }

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                }
            });
        } else
        if(this.channel==null) {
            // local -> remote copy
            final Pipe pipe = Pipe.createLocalToRemote();


            Future<Void> future = target.actAsync(new FileCallable<Void>() {
                public Void invoke(File f, VirtualChannel channel) throws IOException {
                    try {
                        readFromTar(remote+'/'+fileMask, f,TarCompression.GZIP.extract(pipe.getIn()));
                        return null;
                    } finally {
                        pipe.getIn().close();
                    }
                }
            });
            int r = writeToTar(new File(remote),fileMask,excludes,TarCompression.GZIP.compress(pipe.getOut()));
            try {
                future.get();
            } catch (ExecutionException e) {
                throw new IOException2(e);
            }
            return r;
        } else {
            // remote -> local copy
            final Pipe pipe = Pipe.createRemoteToLocal();


            Future<Integer> future = actAsync(new FileCallable<Integer>() {
                public Integer invoke(File f, VirtualChannel channel) throws IOException {
                    try {
                        return writeToTar(f,fileMask,excludes,TarCompression.GZIP.compress(pipe.getOut()));
                    } finally {
                        pipe.getOut().close();
                    }
                }
            });
            try {
                readFromTar(remote+'/'+fileMask,new File(target.remote),TarCompression.GZIP.extract(pipe.getIn()));
            } catch (IOException e) {// BuildException or IOException
                try {
                    future.get(3,TimeUnit.SECONDS);
                    throw e;    // the remote side completed successfully, so the error must be local
                } catch (ExecutionException x) {

View Full Code Here

    @Bug(7809)
    public void testRemoteProcOutputSync() throws Exception {
        VirtualChannel ch = createSlaveChannel();


        // keep the pipe fairly busy
        final Pipe p = Pipe.createRemoteToLocal();
        for (int i=0; i<10; i++)
            ch.callAsync(new ChannelFiller(p.getOut()));
        new Thread() {
            @Override
            public void run() {
                try {
                    IOUtils.drain(p.getIn());
                } catch (IOException e) {
                }
            }
        }.start();

View Full Code Here

        }


        public Channel launchChannel(String[] cmd, OutputStream err, FilePath _workDir, Map<String,String> envOverrides) throws IOException, InterruptedException {
            printCommandLine(cmd, _workDir);


            Pipe out = Pipe.createRemoteToLocal();
            final String workDir = _workDir==null ? null : _workDir.getRemote();


            OutputStream os = getChannel().call(new RemoteChannelLaunchCallable(cmd, out, err, workDir, envOverrides));


            return new Channel("remotely launched channel on "+channel,
                Computer.threadPoolForRemoting, out.getIn(), new BufferedOutputStream(os));
        }

View Full Code Here

        }


        public Channel launchChannel(String[] cmd, OutputStream err, FilePath _workDir, Map<String,String> envOverrides) throws IOException, InterruptedException {
            printCommandLine(cmd, _workDir);


            Pipe out = Pipe.createRemoteToLocal();
            final String workDir = _workDir==null ? null : _workDir.getRemote();


            OutputStream os = getChannel().call(new RemoteChannelLaunchCallable(cmd, out, err, workDir, envOverrides));


            return new Channel("remotely launched channel on "+channel,
                Computer.threadPoolForRemoting, out.getIn(), new BufferedOutputStream(os));
        }

View Full Code Here

     */
    public InputStream read() throws IOException {
        if(channel==null)
            return new FileInputStream(new File(remote));


        final Pipe p = Pipe.createRemoteToLocal();
        channel.callAsync(new Callable<Void,IOException>() {
            public Void call() throws IOException {
                FileInputStream fis=null;
                try {
                    fis = new FileInputStream(new File(remote));
                    Util.copyStream(fis,p.getOut());
                    return null;
                } finally {
                    IOUtils.closeQuietly(fis);
                    IOUtils.closeQuietly(p.getOut());
                }
            }
        });


        return p.getIn();
    }

View Full Code Here

                    }
                }
            });
        } else if (this.channel == null) {
            // local -> remote copy
            final Pipe pipe = Pipe.createLocalToRemote();


            Future<Void> future = target.actAsync(new FileCallable<Void>() {
                public Void invoke(File f, VirtualChannel channel) throws IOException {
                    try {
                        readFromTar(remote + '/' + fileMask, f, (remoteCompressionType != null?
                            remoteCompressionType.extract(pipe.getIn()) :
                            FilePath.TarCompression.GZIP.extract(pipe.getIn())));
                        return null;
                    } finally {
                        pipe.getIn().close();
                    }
                }
            });
            int r = writeToTar(new File(remote), fileMask, excludes, (remoteCompressionType != null?
                remoteCompressionType.compress(pipe.getOut()) : FilePath.TarCompression.GZIP.compress(pipe.getOut())));
            try {
                future.get();
            } catch (ExecutionException e) {
                throw new IOException2(e);
            }
            return r;
        } else {
            // remote -> local copy
            final Pipe pipe = Pipe.createRemoteToLocal();


            Future<Integer> future = actAsync(new FileCallable<Integer>() {
                public Integer invoke(File f, VirtualChannel channel) throws IOException {
                    try {
                        return writeToTar(f, fileMask, excludes, (remoteCompressionType != null?
                            remoteCompressionType.compress(pipe.getOut()) :
                            FilePath.TarCompression.GZIP.compress(pipe.getOut())));
                    } finally {
                        pipe.getOut().close();
                    }
                }
            });
            try {
                //it's possible to get NPE if on slave works old process
                readFromTar(remote + '/' + fileMask, new File(target.remote),
                    (remoteCompressionType != null? remoteCompressionType.extract(pipe.getIn()) :
                        FilePath.TarCompression.GZIP.extract(pipe.getIn())));
            } catch (IOException e) {// BuildException or IOException
                try {
                    future.get(3, TimeUnit.SECONDS);
                    throw e;    // the remote side completed successfully, so the error must be local
                } catch (ExecutionException x) {

View Full Code Here

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Related Classes of hudson.remoting.Pipe

hudson.cli.CLI

hudson.FilePath

hudson.Launcher$RemoteLauncher

hudson.ProcTest

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Examples of hudson.remoting.Pipe

Usage

Implementation Note

Related Classes of hudson.remoting.Pipe