| /* |
| * 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.functions; |
| |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Future; |
| |
| import org.apache.logging.log4j.Logger; |
| |
| import org.apache.geode.cache.execute.FunctionContext; |
| import org.apache.geode.distributed.internal.InternalDistributedSystem; |
| import org.apache.geode.internal.cache.execute.InternalFunction; |
| import org.apache.geode.internal.tcp.ConnectionTable; |
| import org.apache.geode.logging.internal.executors.LoggingExecutors; |
| import org.apache.geode.logging.internal.log4j.api.LogService; |
| |
| /** |
| * |
| * Class for Shutdown function |
| * |
| * |
| * |
| */ |
| public class ShutDownFunction implements InternalFunction { |
| private static final Logger logger = LogService.getLogger(); |
| |
| public static final String ID = ShutDownFunction.class.getName(); |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public void execute(FunctionContext context) { |
| try { |
| final InternalDistributedSystem system = InternalDistributedSystem.getConnectedInstance(); |
| if (system == null) { |
| return; |
| } |
| String memberName = system.getDistributedMember().getId(); |
| logger.info("Received GFSH shutdown. Shutting down member " + memberName); |
| |
| disconnectInNonDaemonThread(system); |
| |
| context.getResultSender().lastResult("SUCCESS: succeeded in shutting down " + memberName); |
| } catch (Exception ex) { |
| logger.warn("Error during shutdown", ex); |
| context.getResultSender().lastResult("FAILURE: failed in shutting down " + ex.getMessage()); |
| } |
| } |
| |
| /* |
| * The shutdown is performed in a separate, non-daemon thread so that the JVM does not shut down |
| * prematurely before the full process has completed. |
| */ |
| private void disconnectInNonDaemonThread(final InternalDistributedSystem ids) |
| throws InterruptedException, ExecutionException { |
| ExecutorService exec = LoggingExecutors.newSingleThreadExecutor("Shutdown Disconnector", false); |
| Future future = exec.submit(() -> { |
| try { |
| // Allow the function call to exit so we don't get disconnect exceptions in the client |
| // making the call. |
| Thread.sleep(1000); |
| } catch (InterruptedException ignore) { |
| } |
| ConnectionTable.threadWantsSharedResources(); |
| if (ids.isConnected()) { |
| ids.disconnect(); |
| } |
| }); |
| try { |
| future.get(); |
| } finally { |
| exec.shutdown(); |
| } |
| } |
| |
| @Override |
| public String getId() { |
| return ShutDownFunction.ID; |
| |
| } |
| |
| @Override |
| public boolean hasResult() { |
| return true; |
| } |
| |
| @Override |
| public boolean optimizeForWrite() { |
| // no need of optimization since read-only. |
| return false; |
| } |
| |
| @Override |
| public boolean isHA() { |
| return false; |
| } |
| |
| } |