Examples of hudson.remoting.VirtualChannel

hudson.remoting.VirtualChannel
Virtualized {@link Channel} that allows different implementations. @author Kohsuke Kawaguchi


    @TestExtension
    public static class ComputerListenerImpl extends ComputerListener {
        @Override
        public void onOnline(Computer c, TaskListener listener) throws IOException, InterruptedException {
            VirtualChannel ch = c.getChannel();
            if (ch instanceof Channel)
                CURRENT.channels.add((Channel)ch);
        }

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            }
        }


        // determine where to perform polling. prefer the node where the build happened,
        // in case a cluster is non-uniform. see http://www.nabble.com/svn-connection-from-slave-only-td24970587.html
        VirtualChannel ch=null;
        if (workspace != null && !isPollFromMaster()) {
            ch = workspace.getChannel();
        }
        if (ch==null)   ch= MasterComputer.localChannel;


        final String nodeName = ch instanceof Channel ? ((Channel) ch).getName() : "master";


        final SVNLogHandler logHandler = new SVNLogHandler(createSVNLogFilter(), listener);


        final Map<String,ISVNAuthenticationProvider> authProviders = new LinkedHashMap<String,
                ISVNAuthenticationProvider>();
        for (ModuleLocation loc: getLocations()) {
            String url;
            try {
                url = loc.getExpandedLocation(project).getSVNURL().toDecodedString();
            } catch (SVNException ex) {
                ex.printStackTrace(listener.error(Messages.SubversionSCM_pollChanges_exception(loc.getURL())));
                return BUILD_NOW;
            }
            authProviders.put(url, createAuthenticationProvider(project, loc));
        }
        final ISVNAuthenticationProvider defaultAuthProvider = createAuthenticationProvider(project, null);


        // figure out the remote revisions
        return ch.call(new CompareAgainstBaselineCallable(baseline, logHandler, project.getName(), listener, defaultAuthProvider, authProviders, nodeName));
    }

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        try {
            // ensure we actually have a valid hudson launcher
            if (null == hudsonLauncher) {
                hudsonLauncher = Hudson.getInstance().createLauncher(new StreamTaskListener(System.out));
            }
            VirtualChannel channel = hudsonLauncher.getChannel();


            // hudsonOut->p4in->reader
            FastPipedOutputStream hudsonOut = new FastPipedOutputStream();
            FastPipedInputStream p4in = new FastPipedInputStream(hudsonOut);
            input = p4in;


            // hudsonIn<-p4Out<-writer
            FastPipedInputStream hudsonIn = new FastPipedInputStream();
            FastPipedOutputStream p4out = new FastPipedOutputStream(hudsonIn);
            output = p4out;


            final OutputStream out = hudsonOut == null ? null : new RemoteOutputStream(hudsonOut);
            final InputStream  in  = hudsonIn ==null ? null : new RemoteInputStream(hudsonIn);


            String remotePath = filePath.getRemote();
            TaskListener listener = hudsonLauncher.getListener();
            RemoteCall remoteCall = new RemoteCall(
                    Arrays.asList(cmd), env, in, out, null,
                    remotePath,
                    listener);
            Future future = channel.callAsync(remoteCall);
            currentProcess = new RemoteProc(future);


        } catch(IOException e) {
            //try to close all the pipes before throwing an exception
            closeBuffers();

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                }
                Computer c = j.getComputer(slave);
                if (c == null) {
                    return null;
                }
                VirtualChannel ch = c.getChannel();
                if (ch == null) {
                    return null;
                }
                FilePath fp = new FilePath(ch, path);
                return c.getWorkspaceList().acquire(fp);

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                }
                Computer c = j.getComputer(slave);
                if (c == null) {
                    return null;
                }
                VirtualChannel ch = c.getChannel();
                if (ch == null) return null;
                return new FilePath(ch, path);
            }
        };
    }

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        }
        Computer c = j.getComputer(getNode());
        if (c == null) {
            return null;
        }
        VirtualChannel ch = c.getChannel();
        if (ch == null) {
            return null;
        }
        return new FilePath(ch, getPath());
    }

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    public String getLabelString() {
        return Util.fixNull(label).trim();
    }


    public ClockDifference getClockDifference() throws IOException, InterruptedException {
        VirtualChannel channel = getChannel();
        if(channel==null)
            throw new IOException(getNodeName()+" is offline");


        long startTime = System.currentTimeMillis();
        long slaveTime = channel.call(new GetSystemTime());
        long endTime = System.currentTimeMillis();


        return new ClockDifference((startTime+endTime)/2 - slaveTime);
    }

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    protected void execute(TaskListener listener) throws IOException, InterruptedException {
        if (!enabled)   return;


        long now = System.currentTimeMillis();
        for (Computer c: Hudson.getInstance().getComputers()) {
            VirtualChannel ch = c.getChannel();
            if (ch instanceof Channel) {
                Channel channel = (Channel) ch;
                if (now-channel.getLastHeard() > TIME_TILL_PING) {
                    // haven't heard from this slave for a while.
                    Long lastPing = (Long)channel.getProperty(ConnectionActivityMonitor.class);

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    public String getHostName() throws IOException, InterruptedException {
        if(hostNameCached)
            // in the worst case we end up having multiple threads computing the host name simultaneously, but that's not harmful, just wasteful.
            return cachedHostName;


        VirtualChannel channel = getChannel();
        if(channel==null)   return null; // can't compute right now


        for( String address : channel.call(new ListPossibleNames())) {
            try {
                InetAddress ia = InetAddress.getByName(address);
                if(!(ia instanceof Inet4Address)) {
                    LOGGER.fine(address+" is not an IPv4 address");
                    continue;
                }
                if(!ComputerPinger.checkIsReachable(ia, 3)) {
                    LOGGER.fine(address+" didn't respond to ping");
                    continue;
                }
                cachedHostName = ia.getCanonicalHostName();
                hostNameCached = true;
                return cachedHostName;
            } catch (IOException e) {
                // if a given name fails to parse on this host, we get this error
                LOGGER.log(Level.FINE, "Failed to parse "+address,e);
            }
        }


        // allow the administrator to manually specify the host name as a fallback. HUDSON-5373
        cachedHostName = channel.call(new GetFallbackName());


        hostNameCached = true;
        return null;
    }

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        // this is a debug probe and may expose sensitive information
        checkPermission(Hudson.ADMINISTER);


        rsp.setContentType("text/plain");
        PrintWriter w = new PrintWriter(rsp.getCompressedWriter(req));
        VirtualChannel vc = getChannel();
        if (vc instanceof Channel) {
            w.println("Master to slave");
            ((Channel)vc).dumpExportTable(w);
            w.flush(); // flush here once so that even if the dump from the slave fails, the client gets some useful info


            w.println("\n\n\nSlave to master");
            w.print(vc.call(new DumpExportTableTask()));
        } else {
            w.println(Messages.Computer_BadChannel());
        }
        w.close();
    }

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Related Classes of hudson.remoting.VirtualChannel

hudson.model.Computer

hudson.model.Node

hudson.model.Slave

hudson.os.SU

hudson.plugins.perforce.HudsonP4RemoteExecutor

hudson.ProcTest

hudson.scm.SubversionSCM

hudson.slaves.ConnectionActivityMonitor

hudson.util.ProcessTree

org.jenkinsci.plugins.workflow.actions.WorkspaceAction

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