| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.PrintStream; |
| import java.net.Socket; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.function.Consumer; |
| import jdk.jshell.execution.DirectExecutionControl; |
| import jdk.jshell.spi.ExecutionControl; |
| import jdk.jshell.spi.ExecutionControl.EngineTerminationException; |
| import jdk.jshell.spi.ExecutionControl.InternalException; |
| import jdk.jshell.spi.ExecutionControl.RunException; |
| import static jdk.jshell.execution.Util.forwardExecutionControlAndIO; |
| |
| /** |
| * A custom remote agent to verify aux channel and custom ExecutionControl. |
| */ |
| public class MyRemoteExecutionControl extends DirectExecutionControl implements ExecutionControl { |
| |
| static PrintStream auxPrint; |
| |
| /** |
| * Launch the agent, connecting to the JShell-core over the socket specified |
| * in the command-line argument. |
| * |
| * @param args standard command-line arguments, expectation is the socket |
| * number is the only argument |
| * @throws Exception any unexpected exception |
| */ |
| public static void main(String[] args) throws Exception { |
| try { |
| String loopBack = null; |
| Socket socket = new Socket(loopBack, Integer.parseInt(args[0])); |
| InputStream inStream = socket.getInputStream(); |
| OutputStream outStream = socket.getOutputStream(); |
| Map<String, Consumer<OutputStream>> outputs = new HashMap<>(); |
| outputs.put("out", st -> System.setOut(new PrintStream(st, true))); |
| outputs.put("err", st -> System.setErr(new PrintStream(st, true))); |
| outputs.put("aux", st -> { auxPrint = new PrintStream(st, true); }); |
| Map<String, Consumer<InputStream>> input = new HashMap<>(); |
| input.put("in", st -> System.setIn(st)); |
| forwardExecutionControlAndIO(new MyRemoteExecutionControl(), inStream, outStream, outputs, input); |
| } catch (Throwable ex) { |
| throw ex; |
| } |
| } |
| |
| @Override |
| public String varValue(String className, String varName) |
| throws RunException, EngineTerminationException, InternalException { |
| auxPrint.print(varName); |
| return super.varValue(className, varName); |
| } |
| |
| @Override |
| public Object extensionCommand(String className, Object arg) |
| throws RunException, EngineTerminationException, InternalException { |
| if (!arg.equals("test")) { |
| throw new InternalException("expected extensionCommand arg to be 'test' got: " + arg); |
| } |
| return "ribbit"; |
| } |
| |
| } |