antville/helma
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added two methods that allow serializing the sessions-table:

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storeSessionData(File) and loadSessionData (File)
if no file is given the file "dbdir/sessions" is used

added new app.property: persistentSessions
with this all sessions are serialized at shutdown and re-read at startup
(sessions that expired in the meantime aren't loaded anymore)
This commit is contained in:
stefanp 2003-02-16 22:41:18 +00:00
parent 077f1dc516
commit 8a5e24a574
1 changed files with 70 additions and 0 deletions
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70
src/helma/framework/core/Application.java
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@ -228,6 +228,11 @@ public final class Application implements IPathElement, Runnable {
}
}
// read the sessions if wanted
if ("true".equalsIgnoreCase (getProperty("persistentSessions"))) {
loadSessionData (null);
}
typemgr = new TypeManager (this);
typemgr.createPrototypes ();
// logEvent ("Started type manager for "+name);
@ -319,6 +324,11 @@ public final class Application implements IPathElement, Runnable {
ext.applicationStopped (this);
}
// store the sessions if wanted
if ("true".equalsIgnoreCase (getProperty("persistentSessions"))) {
storeSessionData (null);
}
// stop logs if they exist
if (eventLog != null) {
eventLog.close ();
@ -1392,5 +1402,65 @@ public final class Application implements IPathElement, Runnable {
throw new Exception ("Method "+key+" is not callable via XML-RPC");
}
public void storeSessionData (File f) {
if (f==null)
f = new File(dbDir, "sessions");
try {
OutputStream ostream = new BufferedOutputStream (new FileOutputStream(f));
ObjectOutputStream p = new ObjectOutputStream(ostream);
synchronized (sessions) {
p.writeInt (sessions.size ());
for (Enumeration e=sessions.elements (); e.hasMoreElements ();) {
p.writeObject ((Session) e.nextElement ());
}
}
p.flush();
ostream.close();
logEvent ("stored " + sessions.size () + " sessions in file");
} catch (Exception e) {
logEvent ("error storing session data: " + e.toString ());
}
}
/**
* loads the serialized session table from a given file or from dbdir/sessions
*/
public void loadSessionData (File f) {
if (f==null)
f = new File(dbDir, "sessions");
// compute session timeout value
int sessionTimeout = 30;
try {
sessionTimeout = Math.max (0, Integer.parseInt (props.getProperty ("sessionTimeout", "30")));
} catch (Exception ignore) {
System.out.println(ignore.toString());
}
long now = System.currentTimeMillis ();
try {
// load the stored data:
InputStream istream = new BufferedInputStream (new FileInputStream(f));
ObjectInputStream p = new ObjectInputStream(istream);
int size = p.readInt ();
int ct = 0;
Hashtable newSessions = new Hashtable ();
while (ct < size) {
Session session = (Session) p.readObject ();
if (now - session.lastTouched () < sessionTimeout * 60000) {
session.setApp (this);
newSessions.put (session.getSessionID (), session);
}
ct++;
}
p.close ();
istream.close ();
sessions = newSessions;
logEvent ("loaded " + newSessions.size () + " sessions from file");
} catch (Exception e) {
logEvent ("error loading session data: " + e.toString ());
}
}
}