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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,
* 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.remote;
import java.util.List;
import org.apache.camel.Processor;
import org.apache.camel.component.file.GenericFile;
import org.apache.camel.util.FileUtil;
import org.apache.camel.util.ObjectHelper;
import org.apache.camel.util.URISupport;
import org.apache.commons.net.ftp.FTPFile;
/**
* FTP consumer
*/
public class FtpConsumer extends RemoteFileConsumer {
protected String endpointPath;
public FtpConsumer(RemoteFileEndpoint endpoint, Processor processor, RemoteFileOperations fileOperations) {
super(endpoint, processor, fileOperations);
this.endpointPath = endpoint.getConfiguration().getDirectory();
}
@Override
protected boolean pollDirectory(String fileName, List> fileList, int depth) {
String currentDir = null;
if (isStepwise()) {
// must remember current dir so we stay in that directory after the poll
currentDir = operations.getCurrentDirectory();
}
// strip trailing slash
fileName = FileUtil.stripTrailingSeparator(fileName);
boolean answer = doPollDirectory(fileName, null, fileList, depth);
if (currentDir != null) {
operations.changeCurrentDirectory(currentDir);
}
return answer;
}
protected boolean pollSubDirectory(String absolutePath, String dirName, List> fileList, int depth) {
boolean answer = doPollDirectory(absolutePath, dirName, fileList, depth);
// change back to parent directory when finished polling sub directory
if (isStepwise()) {
operations.changeToParentDirectory();
}
return answer;
}
protected boolean doPollDirectory(String absolutePath, String dirName, List> fileList, int depth) {
log.trace("doPollDirectory from absolutePath: {}, dirName: {}", absolutePath, dirName);
depth++;
// remove trailing /
dirName = FileUtil.stripTrailingSeparator(dirName);
// compute dir depending on stepwise is enabled or not
String dir;
if (isStepwise()) {
dir = ObjectHelper.isNotEmpty(dirName) ? dirName : absolutePath;
operations.changeCurrentDirectory(dir);
} else {
dir = absolutePath;
}
log.trace("Polling directory: {}", dir);
List files;
if (isStepwise()) {
files = operations.listFiles();
} else {
files = operations.listFiles(dir);
}
if (files == null || files.isEmpty()) {
// no files in this directory to poll
log.trace("No files found in directory: {}", dir);
return true;
} else {
// we found some files
log.trace("Found {} in directory: {}", files.size(), dir);
}
for (FTPFile file : files) {
// check if we can continue polling in files
if (!canPollMoreFiles(fileList)) {
return false;
}
if (file.isDirectory()) {
RemoteFile remote = asRemoteFile(absolutePath, file);
if (endpoint.isRecursive() && isValidFile(remote, true) && depth < endpoint.getMaxDepth()) {
// recursive scan and add the sub files and folders
String subDirectory = file.getName();
String path = absolutePath + "/" + subDirectory;
boolean canPollMore = pollSubDirectory(path, subDirectory, fileList, depth);
if (!canPollMore) {
return false;
}
}
} else if (file.isFile()) {
RemoteFile remote = asRemoteFile(absolutePath, file);
if (isValidFile(remote, false) && depth >= endpoint.getMinDepth()) {
if (isInProgress(remote)) {
log.trace("Skipping as file is already in progress: {}", remote.getFileName());
} else {
// matched file so add
fileList.add(remote);
}
}
} else {
log.debug("Ignoring unsupported remote file type: " + file);
}
}
return true;
}
private RemoteFile asRemoteFile(String absolutePath, FTPFile file) {
RemoteFile answer = new RemoteFile();
answer.setEndpointPath(endpointPath);
answer.setFile(file);
answer.setFileNameOnly(file.getName());
answer.setFileLength(file.getSize());
if (file.getTimestamp() != null) {
answer.setLastModified(file.getTimestamp().getTimeInMillis());
}
answer.setHostname(((RemoteFileConfiguration) endpoint.getConfiguration()).getHost());
// absolute or relative path
boolean absolute = FileUtil.hasLeadingSeparator(absolutePath);
answer.setAbsolute(absolute);
// create a pseudo absolute name
String dir = FileUtil.stripTrailingSeparator(absolutePath);
String absoluteFileName = FileUtil.stripLeadingSeparator(dir + "/" + file.getName());
// if absolute start with a leading separator otherwise let it be relative
if (absolute) {
absoluteFileName = "/" + absoluteFileName;
}
answer.setAbsoluteFilePath(absoluteFileName);
// the relative filename, skip the leading endpoint configured path
String relativePath = ObjectHelper.after(absoluteFileName, endpointPath);
// skip leading /
relativePath = FileUtil.stripLeadingSeparator(relativePath);
answer.setRelativeFilePath(relativePath);
// the file name should be the relative path
answer.setFileName(answer.getRelativeFilePath());
return answer;
}
private boolean isStepwise() {
RemoteFileConfiguration config = (RemoteFileConfiguration) endpoint.getConfiguration();
return config.isStepwise();
}
@Override
public String toString() {
return "FtpConsumer[" + URISupport.sanitizeUri(getEndpoint().getEndpointUri()) + "]";
}
}
