/*
* Copyright 2010 Alibaba Group Holding Limited.
* 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.
*
*/
package com.alibaba.antx.config.resource.ssh;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import com.alibaba.antx.config.ConfigException;
import com.alibaba.antx.config.resource.Resource;
import com.alibaba.antx.config.resource.ResourceURI;
import com.alibaba.antx.config.resource.Session;
import com.alibaba.antx.util.StreamUtil;
import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.SftpATTRS;
import com.jcraft.jsch.SftpException;
import com.jcraft.jsch.ChannelSftp.LsEntry;
public class SshResource extends Resource {
private final ChannelSftp channel;
private final SftpATTRS attrs;
public SshResource(Session session, ChannelSftp channel, ResourceURI uri, SftpATTRS attrs) {
super(session, uri);
this.channel = channel;
this.attrs = attrs;
}
public Resource getRelatedResource(String suburi) {
return new SshResource((Session) getSession(), channel, getURI().getSubURI(suburi), null);
}
public byte[] getContent() {
assertFile();
try {
return StreamUtil.readBytes(getInputStream(), true).toByteArray();
} catch (IOException e) {
throw new ConfigException(e);
}
}
public InputStream getInputStream() {
assertFile();
try {
return channel.get(getURI().getPath());
} catch (SftpException e) {
throw new ConfigException(e);
}
}
public OutputStream getOutputStream() {
assertFile();
try {
return channel.put(getURI().getPath());
} catch (SftpException e) {
throw new ConfigException(e);
}
}
public String getCharset() {
return null;
}
public String getContentType() {
return null;
}
public boolean isDirectory() {
if (attrs == null) {
return getURI().guessDirectory();
} else {
return attrs.isDir();
}
}
public List list() {
assertDirectory();
List entries;
try {
entries = channel.ls(getURI().getPath());
} catch (SftpException e) {
throw new ConfigException(e);
}
List result = new ArrayList(entries.size());
for (Iterator i = entries.iterator(); i.hasNext();) {
LsEntry entry = (LsEntry) i.next();
String name = entry.getFilename();
if (".".equals(name) || "..".equals(name)) {
continue;
}
result.add(new SshResource((Session) getSession(), channel, getURI().getSubURI(name,
entry.getAttrs().isDir()), entry.getAttrs()));
}
Collections.sort(result);
return result;
}
}