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/*
* 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";
}
}
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