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package org.openslx.dnbd3;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.filter.Filters;
import org.jdom2.input.SAXBuilder;
import org.jdom2.xpath.XPathExpression;
import org.jdom2.xpath.XPathFactory;
public class DNBD3Server {
private static final int CMDSTOP = 0;
private static final int CMDRELOAD = 1;
private static final int CMDINFO = 2;
private static final String HOST = "127.0.0.1";
private static final int PORT = 5004;
public void doReload() throws IOException {
Socket sock = new Socket(HOST, PORT);
sendCommand(sock, CMDRELOAD);
sock.close();
}
public void doShutdown() throws IOException {
Socket sock = new Socket(HOST, PORT);
sendCommand(sock, CMDSTOP);
sock.close();
}
public List<DNBD3Image> getImages() throws IOException {
List<DNBD3Image> images = new ArrayList<DNBD3Image>();
Socket sock = new Socket(HOST, PORT);
sendCommand(sock, CMDINFO);
try {
String atime, vid, rid, file;
InputStream is = sock.getInputStream();
SAXBuilder builder = new SAXBuilder();
Document document = (Document) builder.build(is);
XPathFactory xpfac = XPathFactory.instance();
XPathExpression<Element> xp;
xp = xpfac.compile("//dnbd3-server/images/image", Filters.element());
for (Element e : xp.evaluate(document)) {
atime = e.getAttributeValue("atime");
vid = e.getAttributeValue("vid");
rid = e.getAttributeValue("rid");
file = e.getAttributeValue("file");
images.add(new DNBD3Image(atime, vid, rid, file));
}
} catch (JDOMException ex) {
ex.printStackTrace();
}
sock.close();
return images;
}
public List<DNBD3Client> getClients() throws IOException {
List<DNBD3Client> clients = new ArrayList<DNBD3Client>();
Socket sock = new Socket(HOST, PORT);
sendCommand(sock, CMDINFO);
try {
String ip, image;
InputStream is = sock.getInputStream();
SAXBuilder builder = new SAXBuilder();
Document document = (Document) builder.build(is);
XPathFactory xpfac = XPathFactory.instance();
XPathExpression<Element> xp;
xp = xpfac.compile("//dnbd3-server/clients/client", Filters.element());
for (Element e : xp.evaluate(document)) {
ip = e.getAttributeValue("ip");
image = e.getAttributeValue("file");
clients.add(new DNBD3Client(ip, image));
}
} catch (JDOMException ex) {
ex.printStackTrace();
}
sock.close();
return clients;
}
////////////////////////////////////////////////////////////////////////////////
private void sendCommand(Socket sock, int cmd) throws IOException {
OutputStream os = sock.getOutputStream();
DataOutputStream dos = new DataOutputStream(os);
dos.writeInt(cmd);
}
}
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