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/*
* ============LICENSE_START======================================================================
* Copyright (C) 2018-2019 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 static java.nio.charset.StandardCharsets.UTF_8;
import static org.apache.commons.io.IOUtils.toByteArray;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import com.github.stefanbirkner.fakesftpserver.rule.FakeSftpServerRule;
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 java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.junit.Rule;
import org.junit.Test;
import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
public class SftpClientTest {
private static final String USERNAME = "bob";
private static final String PASSWORD = "123";
private static final String DUMMY_CONTENT = "dummy content";
private static final Path LOCAL_DUMMY_FILE = Paths.get("target/dummy.txt");
private static final String REMOTE_DUMMY_FILE = "/dummy_directory/dummy_file.txt";
private static final JSch JSCH = new JSch();
private static final int TIMEOUT = 2000;
@Rule
public final FakeSftpServerRule sftpServer = new FakeSftpServerRule().addUser(USERNAME, PASSWORD);
@Test
public void collectFile_withOKresponse()
throws DatafileTaskException, IOException, JSchException, SftpException, Exception {
FileServerData expectedFileServerData = ImmutableFileServerData.builder().serverAddress("127.0.0.1")
.userId(USERNAME).password(PASSWORD).port(sftpServer.getPort()).build();
try (SftpClient sftpClient = new SftpClient(expectedFileServerData)) {
sftpClient.open();
sftpServer.putFile(REMOTE_DUMMY_FILE, DUMMY_CONTENT, UTF_8);
byte[] file = downloadFile(sftpServer, REMOTE_DUMMY_FILE);
sftpClient.collectFile(REMOTE_DUMMY_FILE, LOCAL_DUMMY_FILE);
byte[] localFile = Files.readAllBytes(LOCAL_DUMMY_FILE.toFile().toPath());
assertThat(new String(file, UTF_8)).isEqualTo(DUMMY_CONTENT);
assertThat(new String(localFile, UTF_8)).isEqualTo(DUMMY_CONTENT);
}
}
@Test
public void collectFile_withWrongUserName_shouldFail() throws DatafileTaskException, IOException {
FileServerData expectedFileServerData = ImmutableFileServerData.builder().serverAddress("127.0.0.1")
.userId("wrong").password(PASSWORD).port(sftpServer.getPort()).build();
try (SftpClient sftpClient = new SftpClient(expectedFileServerData)) {
sftpServer.putFile(REMOTE_DUMMY_FILE, DUMMY_CONTENT, UTF_8);
assertThatThrownBy(() -> sftpClient.open())
.hasMessageContaining("Could not open Sftp clientcom.jcraft.jsch.JSchException: Auth fail");
}
}
@Test
public void collectFile_withWrongFileName_shouldFail()
throws IOException, JSchException, SftpException, DatafileTaskException {
FileServerData expectedFileServerData = ImmutableFileServerData.builder().serverAddress("127.0.0.1")
.userId(USERNAME).password(PASSWORD).port(sftpServer.getPort()).build();
try (SftpClient sftpClient = new SftpClient(expectedFileServerData)) {
sftpServer.putFile(REMOTE_DUMMY_FILE, DUMMY_CONTENT, UTF_8);
sftpClient.open();
assertThatThrownBy(() -> sftpClient.collectFile("wrong", LOCAL_DUMMY_FILE)).hasMessageStartingWith(
"Unable to get file from xNF. Data: FileServerData{serverAddress=127.0.0.1, "
+ "userId=bob, password=123, port=");
}
}
private static Session connectToServer(FakeSftpServerRule sftpServer) throws JSchException {
return connectToServerAtPort(sftpServer.getPort());
}
private static Session connectToServerAtPort(int port) throws JSchException {
Session session = createSessionWithCredentials(USERNAME, PASSWORD, port);
session.connect(TIMEOUT);
return session;
}
private static ChannelSftp connectSftpChannel(Session session) throws JSchException {
ChannelSftp channel = (ChannelSftp) session.openChannel("sftp");
channel.connect();
return channel;
}
private static Session createSessionWithCredentials(String username, String password, int port)
throws JSchException {
Session session = JSCH.getSession(username, "127.0.0.1", port);
session.setConfig("StrictHostKeyChecking", "no");
session.setPassword(password);
return session;
}
private static byte[] downloadFile(FakeSftpServerRule server, String path)
throws JSchException, SftpException, IOException {
Session session = connectToServer(server);
ChannelSftp channel = connectSftpChannel(session);
try {
InputStream is = channel.get(path);
return toByteArray(is);
} finally {
channel.disconnect();
session.disconnect();
}
}
}
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