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Need example code snippet to open remote terminal and execute shell commands programmatically [message #1739730]

Thu, 04 August 2016 12:00

Chandrayya Kumarswamimath

Messages: 26
Registered: August 2010
Location: Bangalore

Junior Member

I am using the below code to open a remote terminal and execute a shell command in it.

            TerminalsUI terminalsUI = TerminalsUI.getInstance();
            TerminalViewer viewer = terminalsUI.activateTerminalsView();
            CTabItem tab = viewer.getTabFolder().createTabItem(TerminalServiceHelper.getTerminalSubSystem(conn).getHost(), "");
            TerminalElement element = TerminalServiceHelper.createTerminalElement(tab,
                    TerminalServiceHelper.getTerminalSubSystem(conn));
            TerminalServiceHelper.getTerminalSubSystem(conn).addChild(element);
            ITerminalShell lol = element.getTerminalShell();
            TerminalShellService fdf = (TerminalShellService)RSEHelper.getConnectedRemoteShellService(conn, null);
            SshTerminalService shelll = (SshTerminalService)fdf.getAdapter(ITerminalService.class);
            element.setTerminalShell((ITerminalShell)shelll);
            shelll.launchTerminal(null, null, new String[] {}, "", "ls -l", null);

This is opening the remote terminal in "Terminals" view with the content:

Last login: Wed Aug 17 11:14:33 2016 from 10.X.X.X
root@moron:~#

Also command ls -l was not executed and shown in the newly opened terminal may be because of the exception:
java.lang.ClassCastException: org.eclipse.rse.internal.services.ssh.terminal.SshTerminalService cannot be cast to org.eclipse.rse.services.terminals.ITerminalShell

at the line: element.setTerminalShell((ITerminalShell)shelll);

Question:
The above code snippet gives warning as "Discouraged access" at many places.

Please can any one post the recommended code snippet that can be used to open a remote terminal programmatically and execute commands in it programmatically?

[Updated on: Thu, 04 August 2016 12:01]

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Re: Need example code snippet to open remote terminal and execute shell commands programmatically [message #1739736 is a reply to message #1739730]

Thu, 04 August 2016 12:42

Martin Oberhuber

Messages: 1007
Registered: July 2009

Senior Member

Hi,

are you sure you want to do this inside the RSE Framework (RSE Terminals View) ?

I would personally recommend using the newer Terminal 4.x view instead, which has direct SSH access with a lot less bulk around it. A code snippet for programmatically open a tab in that view is referenced here:

https://marketplace.eclipse.org/comment/3982#comment-3982

and here:

https://dev.eclipse.org/mhonarc/lists/tm-dev/msg01128.html

and here:

https://dev.eclipse.org/mhonarc/lists/tm-dev/msg01044.html

Cheers,
Martin

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Re: Need example code snippet to open remote terminal and execute shell commands programmatically [message #1739872 is a reply to message #1739736]

Fri, 05 August 2016 08:22

Chandrayya Kumarswamimath

Messages: 26
Registered: August 2010
Location: Bangalore

Junior Member

Yes. Is it not possible to do it on older RSE/TM. I am using org.eclipse.rse.terminals.ui (1.3.0.201504210807).

I am able to execute commands in remote shell with the below code:

	IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event);
            IStructuredSelection sel = (IStructuredSelection)window.getSelectionService().getSelection();
            RemoteProcessImpl ele = (RemoteProcessImpl)sel.getFirstElement();
            IHost conn = ele.getSystemConnection();
            IRemoteCmdSubSystem cmdSS = RemoteCommandHelpers.getCmdSubSystem(conn);
            Object[] obs = null;
            RemoteOutput fe = null;
            try {
                cmdSS.checkIsConnected(null);
            } catch (SystemMessageException e2) {
                e2.printStackTrace();
            }
            try {
                cmdSS.initializeSubSystem(null);
            } catch (SystemMessageException e1) {
                e1.printStackTrace();
            }
            RemoteCommandShell shell = null;
            try {
                shell = (RemoteCommandShell)cmdSS.getDefaultShell();
            } catch (Exception e) {
                e.printStackTrace();
            }
            shell.removeOutput();
            cmdSS.sendCommandToShell("ls -l", shell, null);
            Thread.sleep(1000);
            obs = new Object[shell.getRoots().length];
            obs = shell.getRoots();
            for (int i = 0; i < obs.length; i++) {
                fe = (RemoteOutput)obs[i];
                String op1 = fe.getText();
                System.out.println(op1);
            }
            command.setLength(0);

I want to do the same thing in remote terminal.

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