| /* |
| * 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.launchers.startuptasks; |
| |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Properties; |
| import java.util.concurrent.CompletableFuture; |
| |
| import org.apache.geode.cache.Cache; |
| import org.apache.geode.cache.CacheFactory; |
| import org.apache.geode.distributed.ServerLauncher; |
| import org.apache.geode.distributed.ServerLauncherCacheProvider; |
| import org.apache.geode.internal.cache.InternalCache; |
| |
| /** |
| * Adds a startup task which completes when a specific file is created in the working directory. |
| */ |
| public class WaitForFileToExist implements ServerLauncherCacheProvider { |
| |
| public static final String WAITING_FILE_NAME = "waiting_file"; |
| |
| @Override |
| public Cache createCache(Properties gemfireProperties, ServerLauncher serverLauncher) { |
| final CacheFactory cacheFactory = new CacheFactory(gemfireProperties); |
| InternalCache cache = (InternalCache) cacheFactory.create(); |
| |
| CompletableFuture<Void> waitForFileTask = CompletableFuture.runAsync(this::waitForFileToExist); |
| cache.getInternalResourceManager().addStartupTask(waitForFileTask); |
| |
| return cache; |
| } |
| |
| private void waitForFileToExist() { |
| Path file = Paths.get(System.getProperty("user.dir")).resolve(WAITING_FILE_NAME) |
| .toAbsolutePath(); |
| |
| while (!Files.exists(file)) { |
| try { |
| Thread.sleep(100); |
| } catch (InterruptedException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |
| } |