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MongoPersistentManager.java
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MongoPersistentManager.java
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/*
* Copyright 2015-2022 the original author or authors.
*
* 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 org.appng.tomcat.session.mongo;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.Manager;
import org.apache.catalina.Session;
import org.apache.catalina.session.PersistentManagerBase;
import org.apache.catalina.session.StandardSession;
import org.apache.juli.logging.Log;
import org.appng.tomcat.session.Utils;
/**
* A {@link Manager} implementation that uses a {@link MongoStore}
*/
public final class MongoPersistentManager extends PersistentManagerBase {
private static final Log log = Utils.getLog(MongoPersistentManager.class);
/**
* The descriptive information about this implementation.
*/
private static final String info = "MongoPersistentManager/1.0";
/**
* The descriptive name of this Manager implementation (for logging).
*/
protected static String name = "MongoPersistentManager";
/**
* Return descriptive information about this Manager implementation and the corresponding version number, in the
* format <code><description>/<version></code>.
*/
public String getInfo() {
return (info);
}
/**
* Return the descriptive short name of this Manager implementation.
*/
@Override
public String getName() {
return (name);
}
@Override
public MongoStore getStore() {
return (MongoStore) super.getStore();
}
@Override
public void processExpires() {
getStore().processExpires();
}
@Override
public Session createSession(String sessionId) {
Session session = super.createSession(sessionId);
getStore().setSessionActive(session);
try {
save(session);
} catch (IOException e) {
log.warn(String.format("Error creating session: %s", session.getIdInternal()));
session = null;
getStore().setSessionInactive();
}
return session;
}
public void afterRequest() {
getStore().setSessionInactive();
}
public void save(Session session) throws IOException {
getStore().save(session);
}
@Override
public void add(Session session) {
// do nothing, we don't want to use Map<String,Session> sessions!
}
@Override
public void remove(Session session, boolean update) {
// avoid super.remove
removeSession(session.getId());
}
@Override
public Session findSession(String id) throws IOException {
Session session = null;
// do not call super, instead load the session directly from the store
try {
session = getStore().load(id);
} catch (ClassNotFoundException e) {
throw new IOException("error loading class for session " + id, e);
}
return session;
}
@Override
public Session[] findSessions() {
List<Session> sessions = new ArrayList<>();
for (String id : getStore().keys()) {
try {
StandardSession session = getStore().loadNoLock(id);
if (null != session) {
sessions.add(session);
}
} catch (ClassNotFoundException | IOException e) {
// ignore
}
}
return sessions.toArray(new Session[0]);
}
@Override
public void processPersistenceChecks() {
// nothing to do since we don't swap in/out sessions
}
protected synchronized void startInternal() throws LifecycleException {
log.info("[" + this.getName() + "]: Starting.");
super.startInternal();
}
protected synchronized void stopInternal() throws LifecycleException {
log.info("[" + this.getName() + "]: Stopping.");
super.stopInternal();
}
}