import java.lang.reflect.Proxy;
import java.util.ArrayList;
import java.util.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
import java.util.List;
+import java.util.Map;
import javax.jcr.LoginException;
import javax.jcr.Repository;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.argeo.ArgeoException;
-import org.springframework.beans.factory.DisposableBean;
-import org.springframework.beans.factory.FactoryBean;
/** Proxy JCR sessions and attach them to calling threads. */
-public class ThreadBoundJcrSessionFactory implements FactoryBean,
- DisposableBean {
+public class ThreadBoundJcrSessionFactory {
private final static Log log = LogFactory
.getLog(ThreadBoundJcrSessionFactory.class);
private Repository repository;
- private final List<Session> activeSessions = Collections
- .synchronizedList(new ArrayList<Session>());
private ThreadLocal<Session> session = new ThreadLocal<Session>();
- private boolean destroying = false;
private final Session proxiedSession;
/** If workspace is null, default will be used. */
private String workspace = null;
private String defaultPassword = "demo";
private Boolean forceDefaultCredentials = false;
+ private boolean active = true;
+
+ // monitoring
+ private final List<Thread> threads = Collections
+ .synchronizedList(new ArrayList<Thread>());
+ private final Map<Long, Session> activeSessions = Collections
+ .synchronizedMap(new HashMap<Long, Session>());
+ private MonitoringThread monitoringThread;
+
public ThreadBoundJcrSessionFactory() {
Class<?>[] interfaces = { Session.class };
proxiedSession = (Session) Proxy.newProxyInstance(getClass()
/** Logs in to the repository using various strategies. */
protected Session login() {
+ if (!isActive())
+ throw new ArgeoException("Thread bound session factory inactive");
+
+ // discard session previously attached to this thread
+ Thread thread = Thread.currentThread();
+ if (activeSessions.containsKey(thread.getId())) {
+ Session oldSession = activeSessions.remove(thread.getId());
+ oldSession.logout();
+ session.remove();
+ }
+
Session newSession = null;
// first try to login without credentials, assuming the underlying login
// module will have dealt with authentication (typically using Spring
throw new ArgeoException("Cannot log in to repository", e);
}
+ session.set(newSession);
// Log and monitor new session
if (log.isTraceEnabled())
log.trace("Logged in to JCR session " + newSession + "; userId="
+ newSession.getUserID());
- activeSessions.add(newSession);
+
+ // monitoring
+ activeSessions.put(thread.getId(), newSession);
+ threads.add(thread);
return newSession;
}
return proxiedSession;
}
- public void destroy() throws Exception {
+ public void init() throws Exception {
+ monitoringThread = new MonitoringThread();
+ monitoringThread.start();
+ }
+
+ public synchronized void dispose() throws Exception {
+ if (activeSessions.size() == 0)
+ return;
+
if (log.isDebugEnabled())
log.debug("Cleaning up " + activeSessions.size()
+ " active JCR sessions...");
- destroying = true;
- for (Session sess : activeSessions) {
+ deactivate();
+ for (Session sess : activeSessions.values()) {
sess.logout();
}
activeSessions.clear();
}
+ protected Boolean isActive() {
+ return active;
+ }
+
+ protected synchronized void deactivate() {
+ active = false;
+ notifyAll();
+ }
+
+ protected synchronized void removeSession(Thread thread) {
+ if (!isActive())
+ return;
+ activeSessions.remove(thread.getId());
+ threads.remove(thread);
+ }
+
+ protected synchronized void cleanDeadThreads() {
+ if (!isActive())
+ return;
+ Iterator<Thread> it = threads.iterator();
+ while (it.hasNext()) {
+ Thread thread = it.next();
+ if (!thread.isAlive() && isActive()) {
+ if (activeSessions.containsKey(thread.getId())) {
+ Session session = activeSessions.get(thread.getId());
+ activeSessions.remove(thread.getId());
+ session.logout();
+ if (log.isDebugEnabled())
+ log.debug("Cleaned up JCR session (userID="
+ + session.getUserID() + ") from dead thread "
+ + thread.getId());
+ }
+ it.remove();
+ }
+ }
+ try {
+ wait(1000);
+ } catch (InterruptedException e) {
+ // silent
+ }
+ }
+
public Class<? extends Session> getObjectType() {
return Session.class;
}
return true;
}
+ /**
+ * Called before a method is actually called, allowing to check the session
+ * or re-login it (e.g. if authentication has changed). The default
+ * implementation returns the session.
+ */
+ protected Session preCall(Session session) {
+ return session;
+ }
+
public void setRepository(Repository repository) {
this.repository = repository;
}
else if ("toString".equals(method.getName()))// maybe logging
return "Uninitialized Argeo thread bound JCR session";
threadSession = login();
- session.set(threadSession);
}
+ preCall(threadSession);
Object ret = method.invoke(threadSession, args);
if ("logout".equals(method.getName())) {
session.remove();
- if (!destroying)
- activeSessions.remove(threadSession);
+ Thread thread = Thread.currentThread();
+ removeSession(thread);
if (log.isTraceEnabled())
- log.trace("Logged out from JCR session " + threadSession
- + "; userId=" + threadSession.getUserID());
+ log.trace("Logged out JCR session (userId="
+ + threadSession.getUserID() + ") on thread "
+ + thread.getId());
}
return ret;
}
}
-
- protected class MonitoringThread extends Thread{
+
+ /** Monitors registered thread in order to clean up dead ones. */
+ private class MonitoringThread extends Thread {
@Override
public void run() {
- Thread thread=null;
+ while (isActive()) {
+ cleanDeadThreads();
+ }
}
-
+
}
}
projects / lgpl / argeo-commons.git / blobdiff