/*
* Copyright 2013 the original author or authors.
*
* 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.
*/
package org.gradle.internal.resource.transport.sftp;
import com.jcraft.jsch.ChannelSftp;
import org.gradle.api.artifacts.repositories.PasswordCredentials;
import org.gradle.api.resources.ResourceException;
import org.gradle.internal.resource.transfer.ExternalResourceLister;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
public class SftpResourceLister implements ExternalResourceLister {
private final SftpClientFactory sftpClientFactory;
private final PasswordCredentials credentials;
public SftpResourceLister(SftpClientFactory sftpClientFactory, PasswordCredentials credentials) {
this.sftpClientFactory = sftpClientFactory;
this.credentials = credentials;
}
public List<String> list(URI directory) {
LockableSftpClient client = sftpClientFactory.createSftpClient(directory, credentials);
try {
@SuppressWarnings("unchecked")
Vector<ChannelSftp.LsEntry> entries = client.getSftpClient().ls(directory.getPath());
List<String> list = new ArrayList<String>();
for (ChannelSftp.LsEntry entry : entries) {
list.add(entry.getFilename());
}
return list;
} catch (com.jcraft.jsch.SftpException e) {
if (e.id == ChannelSftp.SSH_FX_NO_SUCH_FILE) {
return null;
}
throw new ResourceException(directory, String.format("Could not list children for resource '%s'.", directory), e);
} finally {
sftpClientFactory.releaseSftpClient(client);
}
}
}