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/*
* ============LICENSE_START======================================================================
* Copyright (C) 2018 Nordix Foundation. All rights reserved.
* ===============================================================================================
* Licensed 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.
* ============LICENSE_END========================================================================
*/
package org.onap.dcaegen2.collectors.datafile.ftp;
import com.jcraft.jsch.Channel;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;
import org.apache.commons.io.FilenameUtils;
import org.springframework.stereotype.Component;
/**
* Gets file from xNF with SFTP protocol.
*
* @author <a href="mailto:martin.c.yan@est.tech">Martin Yan</a>
*
*/
@Component
public class SftpClient extends FileCollectClient {
@Override
public FileCollectResult retryCollectFile() {
logger.trace("retryCollectFile called");
FileCollectResult result;
Session session = setUpSession(fileServerData);
if (session != null) {
ChannelSftp sftpChannel = getChannel(session, fileServerData);
if (sftpChannel != null) {
try {
sftpChannel.get(remoteFile, localFile);
result = new FileCollectResult();
logger.debug("File {} Download Successfull from xNF", FilenameUtils.getName(localFile));
} catch (SftpException e) {
addError("Unable to get file from xNF. Data: " + fileServerData, e);
result = new FileCollectResult(errorData);
}
sftpChannel.exit();
} else {
result = new FileCollectResult(errorData);
}
session.disconnect();
} else {
result = new FileCollectResult(errorData);
}
logger.trace("retryCollectFile left with result: {}", result);
return result;
}
private Session setUpSession(FileServerData fileServerData) {
JSch jsch = new JSch();
Session session = null;
try {
session = jsch.getSession(fileServerData.userId(), fileServerData.serverAddress(), fileServerData.port());
session.setConfig("StrictHostKeyChecking", "no");
session.setPassword(fileServerData.password());
session.connect();
} catch (JSchException e) {
addError("Unable to set up SFTP connection to xNF. Data: " + fileServerData, e);
}
return session;
}
private ChannelSftp getChannel(Session session, FileServerData fileServerData) {
ChannelSftp sftpChannel = null;
try {
Channel channel;
channel = session.openChannel("sftp");
channel.connect();
sftpChannel = (ChannelSftp) channel;
} catch (JSchException e) {
addError("Unable to get sftp channel to xNF. Data: " + fileServerData, e);
}
return sftpChannel;
}
}
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