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