| /* |
| * 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.camel.component.file; |
| |
| import java.io.File; |
| |
| import org.apache.camel.Exchange; |
| import org.apache.camel.component.file.strategy.FileMoveExistingStrategy; |
| import org.apache.camel.util.FileUtil; |
| import org.apache.camel.util.ObjectHelper; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class GenericFileDefaultMoveExistingFileStrategy implements FileMoveExistingStrategy { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(GenericFileDefaultMoveExistingFileStrategy.class); |
| |
| /** |
| * Moves any existing file due fileExists=Move is in use. |
| */ |
| @Override |
| public boolean moveExistingFile(GenericFileEndpoint endpoint, GenericFileOperations operations, String fileName) |
| throws GenericFileOperationFailedException { |
| |
| // need to evaluate using a dummy and simulate the file first, to have access to all the file attributes |
| // create a dummy exchange as Exchange is needed for expression evaluation |
| // we support only the following 3 tokens. |
| Exchange dummy = endpoint.createExchange(); |
| String parent = FileUtil.onlyPath(fileName); |
| String onlyName = FileUtil.stripPath(fileName); |
| dummy.getIn().setHeader(Exchange.FILE_NAME, fileName); |
| dummy.getIn().setHeader(Exchange.FILE_NAME_ONLY, onlyName); |
| dummy.getIn().setHeader(Exchange.FILE_PARENT, parent); |
| |
| String to = endpoint.getMoveExisting().evaluate(dummy, String.class); |
| // we must normalize it (to avoid having both \ and / in the name which confuses java.io.File) |
| to = FileUtil.normalizePath(to); |
| if (ObjectHelper.isEmpty(to)) { |
| throw new GenericFileOperationFailedException("moveExisting evaluated as empty String, cannot move existing file: " + fileName); |
| } |
| |
| // ensure any paths is created before we rename as the renamed file may be in a different path (which may be non exiting) |
| // use java.io.File to compute the file path |
| File toFile = new File(to); |
| String directory = toFile.getParent(); |
| boolean absolute = FileUtil.isAbsolute(toFile); |
| if (directory != null) { |
| if (!operations.buildDirectory(directory, absolute)) { |
| LOG.debug("Cannot build directory [{}] (could be because of denied permissions)", directory); |
| } |
| } |
| |
| // deal if there already exists a file |
| if (operations.existsFile(to)) { |
| if (endpoint.isEagerDeleteTargetFile()) { |
| LOG.trace("Deleting existing file: {}", to); |
| if (!operations.deleteFile(to)) { |
| throw new GenericFileOperationFailedException("Cannot delete file: " + to); |
| } |
| } else { |
| throw new GenericFileOperationFailedException("Cannot move existing file from: " + fileName + " to: " + to + " as there already exists a file: " + to); |
| } |
| } |
| |
| LOG.trace("Moving existing file: {} to: {}", fileName, to); |
| if (!operations.renameFile(fileName, to)) { |
| throw new GenericFileOperationFailedException("Cannot rename file from: " + fileName + " to: " + to); |
| } |
| |
| return true; |
| } |
| |
| } |