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package com.juick.xmpp.s2s;
import com.juick.xmpp.Stanza;
import com.juick.xmpp.StanzaChild;
import com.juick.xmpp.extensions.JuickMessage;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import java.io.IOException;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.*;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author ugnich
*/
public class XMPPComponent implements ServletContextListener {
private static final Logger LOGGER = Logger.getLogger(XMPPComponent.class.getName());
ExecutorService executorService;
public static String HOSTNAME = null;
public static String STATSFILE = null;
public static ConnectionRouter connRouter;
static final List<ConnectionIn> inConnections = Collections.synchronizedList(new ArrayList<>());
static final List<ConnectionOut> outConnections = Collections.synchronizedList(new ArrayList<>());
static final List<CacheEntry> outCache = Collections.synchronizedList(new ArrayList<>());
static final Integer sqlSync = 0;
static java.sql.Connection sql;
final public static HashMap<String, StanzaChild> childParsers = new HashMap<>();
public static void addConnectionIn(ConnectionIn c) {
synchronized (inConnections) {
inConnections.add(c);
}
}
public static void addConnectionOut(ConnectionOut c) {
synchronized (outConnections) {
outConnections.add(c);
}
}
public static void removeConnectionIn(ConnectionIn c) {
synchronized (inConnections) {
inConnections.remove(c);
}
}
public static void removeConnectionOut(ConnectionOut c) {
synchronized (outConnections) {
outConnections.remove(c);
}
}
public static String getFromCache(String hostname) {
CacheEntry ret = null;
synchronized (outCache) {
for (Iterator<CacheEntry> i = outCache.iterator(); i.hasNext();) {
CacheEntry c = i.next();
if (c.hostname != null && c.hostname.equals(hostname)) {
ret = c;
i.remove();
break;
}
}
}
return (ret != null) ? ret.xml : null;
}
public static ConnectionOut getConnectionOut(String hostname, boolean needReady) {
synchronized (outConnections) {
for (ConnectionOut c : outConnections) {
if (c.to != null && c.to.equals(hostname) && (!needReady || c.streamReady)) {
return c;
}
}
}
return null;
}
public static ConnectionIn getConnectionIn(String streamID) {
synchronized (inConnections) {
for (ConnectionIn c : inConnections) {
if (c.streamID != null && c.streamID.equals(streamID)) {
return c;
}
}
}
return null;
}
public static void sendOut(Stanza s) {
sendOut(s.to.Host, s.toString());
}
public static void sendOut(String hostname, String xml) {
boolean haveAnyConn = false;
ConnectionOut connOut = null;
synchronized (outConnections) {
for (ConnectionOut c : outConnections) {
if (c.to != null && c.to.equals(hostname)) {
if (c.streamReady) {
connOut = c;
break;
} else {
haveAnyConn = true;
break;
}
}
}
}
if (connOut != null) {
try {
connOut.sendStanza(xml);
} catch (IOException e) {
LOGGER.warning("STREAM TO " + connOut.to + " " + connOut.streamID + " ERROR: " + e.toString());
}
return;
}
boolean haveCache = false;
synchronized (outCache) {
for (CacheEntry c : outCache) {
if (c.hostname != null && c.hostname.equals(hostname)) {
c.xml += xml;
c.tsUpdated = System.currentTimeMillis();
haveCache = true;
break;
}
}
if (!haveCache) {
outCache.add(new CacheEntry(hostname, xml));
}
}
if (!haveAnyConn) {
new Thread(new ConnectionOut(hostname)).start();
}
}
@Override
public void contextInitialized(ServletContextEvent sce) {
LOGGER.info("component initialized");
executorService = Executors.newSingleThreadExecutor();
executorService.submit(() -> {
Properties conf = new Properties();
try {
conf.load(sce.getServletContext().getResourceAsStream("WEB-INF/s2s.conf"));
HOSTNAME = conf.getProperty("hostname");
String componentName = conf.getProperty("componentname");
STATSFILE = conf.getProperty("statsfile");
Class.forName("com.mysql.jdbc.Driver");
sql = DriverManager.getConnection("jdbc:mysql://localhost/juick?autoReconnect=true&user=" +
conf.getProperty("mysql_username", "") + "&password=" + conf.getProperty("mysql_password", ""));
childParsers.put(JuickMessage.XMLNS, new JuickMessage());
connRouter = new ConnectionRouter(componentName);
new Thread(connRouter).start();
new Thread(new ConnectionListener()).start();
new Thread(new CleaningUp()).start();
} catch (IOException | ClassNotFoundException | SQLException e) {
LOGGER.log(Level.SEVERE, "XMPPComponent error", e);
}
});
}
@Override
public void contextDestroyed(ServletContextEvent sce) {
synchronized (XMPPComponent.outConnections) {
for (Iterator<ConnectionOut> i = XMPPComponent.outConnections.iterator(); i.hasNext();) {
ConnectionOut c = i.next();
c.closeConnection();
i.remove();
}
}
synchronized (XMPPComponent.inConnections) {
for (Iterator<ConnectionIn> i = XMPPComponent.inConnections.iterator(); i.hasNext();) {
ConnectionIn c = i.next();
c.closeConnection();
i.remove();
}
}
XMPPComponent.connRouter.closeConnection();
synchronized (XMPPComponent.sqlSync) {
if (XMPPComponent.sql != null) {
try {
XMPPComponent.sql.close();
XMPPComponent.sql = null;
} catch (SQLException e) {
LOGGER.warning("SQL ERROR: " + e);
}
}
}
// Now deregister JDBC drivers in this context's ClassLoader:
// Get the webapp's ClassLoader
ClassLoader cl = Thread.currentThread().getContextClassLoader();
// Loop through all drivers
Enumeration<Driver> drivers = DriverManager.getDrivers();
while (drivers.hasMoreElements()) {
Driver driver = drivers.nextElement();
if (driver.getClass().getClassLoader() == cl) {
// This driver was registered by the webapp's ClassLoader, so deregister it:
try {
LOGGER.info(String.format("Deregistering JDBC driver %s", driver.toString()));
DriverManager.deregisterDriver(driver);
} catch (SQLException ex) {
LOGGER.log(Level.SEVERE, String.format("Error deregistering JDBC driver %s", driver), ex);
}
} else {
// driver was not registered by the webapp's ClassLoader and may be in use elsewhere
LOGGER.log(Level.SEVERE, String.format("Not deregistering JDBC driver %s as it does not belong to this webapp's ClassLoader", driver));
}
}
executorService.shutdown();
LOGGER.info("component destroyed");
}
}
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