| /* |
| * 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.util; |
| |
| import java.io.BufferedOutputStream; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| import java.io.Serializable; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| |
| import org.apache.commons.io.IOUtils; |
| |
| import org.apache.geode.cache.CacheWriterException; |
| import org.apache.geode.cache.EntryEvent; |
| import org.apache.geode.cache.util.CacheWriterAdapter; |
| |
| public class ExportLogsCacheWriter extends CacheWriterAdapter implements Serializable { |
| private Path currentFile; |
| private boolean isEmpty = true; |
| private BufferedOutputStream currentOutputStream; |
| |
| @Override |
| public void beforeCreate(EntryEvent event) throws CacheWriterException { |
| if (currentOutputStream == null) { |
| throw new IllegalStateException( |
| "No outputStream is open. You must call startFile before sending data."); |
| } |
| |
| try { |
| Object newValue = event.getNewValue(); |
| if (!(newValue instanceof byte[])) { |
| throw new IllegalArgumentException( |
| "Value must be a byte[]. Received " + newValue.getClass().getCanonicalName()); |
| } |
| currentOutputStream.write((byte[]) newValue); |
| isEmpty = false; |
| } catch (IOException e) { |
| throw new CacheWriterException(e); |
| } |
| } |
| |
| public void startFile(String memberId) throws IOException { |
| if (currentFile != null || currentOutputStream != null) { |
| throw new IllegalStateException("Cannot open more than one file at once"); |
| } |
| |
| currentFile = Files.createTempDirectory(memberId).resolve(memberId + ".zip"); |
| currentOutputStream = new BufferedOutputStream(new FileOutputStream(currentFile.toFile())); |
| isEmpty = true; |
| } |
| |
| public Path endFile() { |
| Path completedFile = currentFile; |
| |
| IOUtils.closeQuietly(currentOutputStream); |
| currentOutputStream = null; |
| currentFile = null; |
| if (isEmpty) |
| return null; |
| return completedFile; |
| } |
| } |