| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more contributor license |
| * agreements. See the NOTICE file distributed with this work for additional information regarding |
| * copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. You may obtain a |
| * copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the License |
| * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express |
| * or implied. See the License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package org.apache.geode.management.internal.cli.shell.unsafe; |
| |
| import java.io.IOException; |
| import java.util.Collections; |
| import java.util.Hashtable; |
| import java.util.Map; |
| |
| import jline.console.ConsoleReader; |
| |
| import org.apache.geode.internal.process.signal.AbstractSignalNotificationHandler; |
| import org.apache.geode.internal.process.signal.Signal; |
| import org.apache.geode.internal.process.signal.SignalEvent; |
| import org.apache.geode.management.internal.cli.shell.Gfsh; |
| import org.apache.geode.unsafe.internal.sun.misc.SignalHandler; |
| |
| /** |
| * This class externalizes signal handling in order to make the GemFire build process a bit cleaner |
| * - for example we have to have exceptions for sun.misc classes when building javadocs. |
| * </p> |
| * |
| * @see org.apache.geode.internal.process.signal.AbstractSignalNotificationHandler |
| * @see org.apache.geode.internal.process.signal.Signal |
| * @see sun.misc.Signal |
| * @see sun.misc.SignalHandler |
| */ |
| @SuppressWarnings("unused") |
| public class GfshSignalHandler extends AbstractSignalNotificationHandler implements SignalHandler { |
| |
| private final Map<Signal, SignalHandler> originalSignalHandlers = |
| Collections.synchronizedMap(new Hashtable<>(Signal.values().length)); |
| |
| public GfshSignalHandler() { |
| for (final Signal signal : Signal.values()) { |
| if (Signal.SIGINT.equals(signal)) { |
| originalSignalHandlers.put(signal, org.apache.geode.unsafe.internal.sun.misc.Signal |
| .handle(new org.apache.geode.unsafe.internal.sun.misc.Signal(signal.getName()), this)); |
| } |
| } |
| } |
| |
| @Override |
| public void handle(final org.apache.geode.unsafe.internal.sun.misc.Signal sig) { |
| notifyListeners(new SignalEvent(sig, Signal.valueOfName(sig.getName()))); |
| try { |
| handleDefault(sig, Gfsh.getConsoleReader()); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| |
| protected void handleDefault(final org.apache.geode.unsafe.internal.sun.misc.Signal sig, |
| final ConsoleReader consoleReader) |
| throws IOException { |
| final Signal signal = Signal.valueOfName(sig.getName()); |
| switch (signal) { |
| case SIGINT: |
| if (consoleReader != null) { |
| String prompt = consoleReader.getPrompt(); |
| consoleReader.resetPromptLine(prompt, "", -1); |
| } |
| break; |
| default: |
| final SignalHandler handler = getOriginalSignalHandler(signal); |
| if (handler != null) { |
| handler.handle(sig); |
| } |
| } |
| } |
| |
| private SignalHandler getOriginalSignalHandler(final Signal signal) { |
| final SignalHandler handler = originalSignalHandlers.get(signal); |
| return (handler == SignalHandler.SIG_DFL || handler == SignalHandler.SIG_IGN ? null : handler); |
| } |
| |
| } |