| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.vysper.xmpp.modules.extension.xep0160_offline_storage; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.vysper.xmpp.addressing.Entity; |
| import org.apache.vysper.xmpp.stanza.Stanza; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class MemoryOfflineStorageProvider extends AbstractOfflineStorageProvider { |
| |
| final Logger logger = LoggerFactory.getLogger(MemoryOfflineStorageProvider.class); |
| |
| private long timeout; |
| |
| private Map<String, List<Entry>> offlineStorageMap = new HashMap<String, List<Entry>>(); |
| |
| public MemoryOfflineStorageProvider() { |
| this(7 * 24 * 3600 * 1000); // default to seven days; |
| } |
| |
| public MemoryOfflineStorageProvider(long timeout) { |
| this.timeout = timeout; |
| Thread checker = new Thread(new TimeoutChecker(), "OfflineTimeoutCheckerThread"); |
| checker.start(); |
| } |
| |
| @Override |
| protected void storeStanza(Stanza stanza) { |
| Entity to = stanza.getTo(); |
| String bareJID = to.getBareJID().getFullQualifiedName(); |
| synchronized (offlineStorageMap) { |
| List<Entry> entriesForJID = offlineStorageMap.get(bareJID); |
| if (entriesForJID == null) { |
| entriesForJID = new ArrayList<Entry>(); |
| offlineStorageMap.put(bareJID, entriesForJID); |
| } |
| entriesForJID.add(new Entry(stanza, new Date().getTime())); |
| } |
| } |
| |
| public Collection<Stanza> getStanzasForBareJID(String bareJID) { |
| synchronized (offlineStorageMap) { |
| List<Entry> entries = offlineStorageMap.remove(bareJID); |
| if (entries == null) { |
| return Collections.emptyList(); |
| } else { |
| |
| List<Stanza> stanzas = new ArrayList<Stanza>(); |
| for (Entry entry : entries) { |
| // TODO add timestamp to messages |
| stanzas.add(entry.getStanza()); |
| } |
| return stanzas; |
| } |
| } |
| } |
| |
| private static class Entry { |
| |
| private Stanza stanza; |
| |
| public Entry(Stanza stanza, long timeStamp) { |
| super(); |
| this.stanza = stanza; |
| this.timeStamp = timeStamp; |
| } |
| |
| private long timeStamp; |
| |
| public long getTimeStamp() { |
| return timeStamp; |
| } |
| |
| public Stanza getStanza() { |
| return stanza; |
| } |
| |
| } |
| |
| private class TimeoutChecker implements Runnable { |
| public void run() { |
| while (true) { |
| try { |
| Thread.sleep(60 * 100 * 1000); |
| } catch (InterruptedException e) { |
| logger.warn("Interrupted", e); |
| } |
| logger.debug("Running timeout checker for offline stanzas"); |
| long timestamp = new Date().getTime() - timeout; |
| Set<String> jids = offlineStorageMap.keySet(); |
| for (String jid : jids) { |
| synchronized (offlineStorageMap) { |
| List<Entry> entries = offlineStorageMap.get(jid); |
| if (entries != null) { |
| for (Iterator<Entry> it = entries.iterator(); it.hasNext();) { |
| Entry entry = it.next(); |
| if (entry.getTimeStamp() < timestamp) { |
| logger.debug("Removed timed out offline stanza"); |
| it.remove(); |
| } |
| } |
| } |
| |
| } |
| } |
| } |
| |
| } |
| } |
| |
| } |