org.apache.camel.component.file.remote.FtpDefaultMoveExistingFileStrategy Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.camel.component.file.remote;
import java.io.IOException;
import org.apache.camel.Exchange;
import org.apache.camel.component.file.GenericFileEndpoint;
import org.apache.camel.component.file.GenericFileOperationFailedException;
import org.apache.camel.component.file.GenericFileOperations;
import org.apache.camel.component.file.strategy.FileMoveExistingStrategy;
import org.apache.camel.util.FileUtil;
import org.apache.camel.util.ObjectHelper;
import org.apache.commons.net.ftp.FTPFile;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FtpDefaultMoveExistingFileStrategy implements FileMoveExistingStrategy {
private static final Logger LOG = LoggerFactory.getLogger(FtpDefaultMoveExistingFileStrategy.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();
// we only support relative paths for the ftp component, so dont provide
// any parent
String parent = null;
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 only support relative paths for the ftp component, so strip any
// leading paths
to = FileUtil.stripLeadingSeparator(to);
// normalize accordingly to configuration
to = ((FtpEndpoint)endpoint).getConfiguration().normalizePath(to);
if (ObjectHelper.isEmpty(to)) {
throw new GenericFileOperationFailedException("moveExisting evaluated as empty String, cannot move existing file: " + fileName);
}
// do we have a sub directory
String dir = FileUtil.onlyPath(to);
if (dir != null) {
// ensure directory exists
operations.buildDirectory(dir, false);
}
// deal if there already exists a file
if (operations.existsFile(to)) {
if (endpoint.isEagerDeleteTargetFile()) {
LOG.trace("Deleting existing file: {}", to);
boolean result;
try {
result = ((FtpOperations)operations).getClient().deleteFile(to);
if (!result) {
throw new GenericFileOperationFailedException("Cannot delete file: " + to);
}
} catch (IOException e) {
throw new GenericFileOperationFailedException(((FtpOperations)operations).getClient().getReplyCode(), ((FtpOperations)operations).getClient().getReplyString(),
"Cannot delete file: " + to, e);
}
} 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;
}
}