/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.ext.uberfire.social.activities.persistence;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import com.google.gson.Gson;
import org.ext.uberfire.social.activities.model.SocialActivitiesEvent;
import org.ext.uberfire.social.activities.model.SocialEventType;
import org.ext.uberfire.social.activities.model.SocialUser;
import org.ext.uberfire.social.activities.security.SocialSecurityConstraintsManager;
import org.ext.uberfire.social.activities.server.SocialUserServicesExtendedBackEndImpl;
import org.ext.uberfire.social.activities.service.SocialEventTypeRepositoryAPI;
import org.ext.uberfire.social.activities.service.SocialTimelinePersistenceAPI;
import org.ext.uberfire.social.activities.service.SocialUserPersistenceAPI;
import org.uberfire.commons.lifecycle.PriorityDisposableRegistry;
import org.uberfire.io.IOService;
import org.uberfire.java.nio.file.FileSystem;
import org.uberfire.java.nio.file.Path;
public class SocialTimelineCacheClusterPersistence extends SocialTimelineCachePersistence implements SocialTimelinePersistenceAPI {
private SocialClusterMessaging socialClusterMessaging;
public SocialTimelineCacheClusterPersistence(final Gson gson,
final Type gsonCollectionType,
final IOService ioService,
final SocialEventTypeRepositoryAPI socialEventTypeRepository,
final SocialUserPersistenceAPI socialUserPersistenceAPI,
final SocialClusterMessaging socialClusterMessaging,
final SocialUserServicesExtendedBackEndImpl userServicesBackend,
final FileSystem fileSystem,
final SocialSecurityConstraintsManager socialSecurityConstraintsManager) {
this.gson = gson;
this.gsonCollectionType = gsonCollectionType;
this.ioService = ioService;
this.socialEventTypeRepository = socialEventTypeRepository;
this.socialUserPersistenceAPI = socialUserPersistenceAPI;
this.socialClusterMessaging = socialClusterMessaging;
this.userServicesBackend = userServicesBackend;
this.fileSystem = fileSystem;
this.socialSecurityConstraintsManager = socialSecurityConstraintsManager;
PriorityDisposableRegistry.register(this);
}
@Override
public void persist(SocialActivitiesEvent event) {
SocialEventType type = socialEventTypeRepository.findType(event.getType());
persistEvent(event,
type,
true);
}
@Override
public void persist(SocialUser user,
SocialActivitiesEvent event) {
if (!clusterSyncEvent(event)) {
registerNewEvent(user,
event);
} else {
syncCluster(user);
}
}
@Override
public void saveAllEvents() {
if (!typeEventsTimelineCache.keySet().isEmpty()) {
try {
final SocialEventType sampleType = typeEventsTimelineCache.keySet().iterator().next();
Path timeLineDir = userServicesBackend.buildPath(SOCIAL_FILES,
sampleType.name());
ioService.startBatch(timeLineDir.getFileSystem());
socialClusterMessaging.notifySomeInstanceisOnShutdown();
saveAllTypeEvents();
saveAllUserTimelines();
} catch (Exception e) {
System.out.println();
} finally {
ioService.endBatch();
}
}
}
private void registerNewEvent(SocialUser user,
SocialActivitiesEvent event) {
List<SocialActivitiesEvent> userEvents = userEventsTimelineFreshEvents.get(user.getUserName());
if (userEvents == null) {
userEvents = new ArrayList<SocialActivitiesEvent>();
}
userEvents.add(event);
userEventsTimelineFreshEvents.put(user.getUserName(),
userEvents);
cacheControl(user);
}
private void syncCluster(SocialUser user) {
List<SocialActivitiesEvent> myFreshEvents = userEventsTimelineFreshEvents.get(user.getUserName());
SocialCacheControl socialCacheControl = userEventsCacheControl.get(user.getUserName());
socialCacheControl.reset();
List<SocialActivitiesEvent> actualTypeTimeline = createOrGetUserTimeline(user.getUserName());
refreshCache(user.getUserName(),
actualTypeTimeline);
syncMyStaleItems(myFreshEvents,
actualTypeTimeline,
user);
}
private void syncCluster(SocialEventType eventType) {
List<SocialActivitiesEvent> myFreshEvents = typeEventsFreshEvents.get(eventType);
SocialCacheControl socialCacheControl = typeEventsCacheControl.get(eventType);
socialCacheControl.reset();
List<SocialActivitiesEvent> actualTypeTimeline = createOrGetTypeTimeline(eventType);
refreshCache(eventType,
actualTypeTimeline);
syncMyStaleItems(myFreshEvents,
actualTypeTimeline,
eventType);
}
void persist(SocialActivitiesEvent event,
SocialEventType type,
boolean sendClusterMsg) {
persistEvent(event,
type,
sendClusterMsg);
}
private void persistEvent(SocialActivitiesEvent event,
SocialEventType eventType,
boolean sendClusterMsg) {
if (!clusterSyncEvent(event)) {
registerNewEvent(event,
eventType,
sendClusterMsg);
} else {
syncCluster(eventType);
}
}
private void registerNewEvent(SocialActivitiesEvent event,
SocialEventType eventType,
boolean sendClusterMsg) {
List<SocialActivitiesEvent> typeEvents = typeEventsFreshEvents.get(eventType);
typeEvents.add(event);
typeEventsFreshEvents.put(eventType,
typeEvents);
cacheControl(event,
eventType);
if (sendClusterMsg) {
socialClusterMessaging.notify(event);
}
}
private boolean clusterSyncEvent(SocialActivitiesEvent event) {
return event.isDummyEvent();
}
private void syncMyStaleItems(List<SocialActivitiesEvent> myFreshEvents,
List<SocialActivitiesEvent> storedTimeline,
SocialEventType eventType) {
List<SocialActivitiesEvent> unsavedEvents = findStaleEvents(myFreshEvents,
storedTimeline);
if (!unsavedEvents.isEmpty()) {
List<SocialActivitiesEvent> cacheEvents = typeEventsFreshEvents.get(eventType);
cacheEvents.addAll(unsavedEvents);
typeEventsFreshEvents.put(eventType,
cacheEvents);
}
}
private void syncMyStaleItems(List<SocialActivitiesEvent> myFreshEvents,
List<SocialActivitiesEvent> storedTimeline,
SocialUser user) {
List<SocialActivitiesEvent> unsavedEvents = findStaleEvents(myFreshEvents,
storedTimeline);
if (!unsavedEvents.isEmpty()) {
List<SocialActivitiesEvent> cacheEvents = userEventsTimelineFreshEvents.get(user.getUserName());
cacheEvents.addAll(unsavedEvents);
userEventsTimelineFreshEvents.put(user.getUserName(),
cacheEvents);
}
}
private List<SocialActivitiesEvent> findStaleEvents(List<SocialActivitiesEvent> myFreshEvents,
List<SocialActivitiesEvent> storedTimeline
) {
List<SocialActivitiesEvent> unsavedEvents = new ArrayList<SocialActivitiesEvent>();
for (SocialActivitiesEvent myEvent : myFreshEvents) {
boolean hasEvent = false;
for (SocialActivitiesEvent storedEvents : storedTimeline) {
if (storedEvents.equals(myEvent)) {
hasEvent = true;
break;
}
}
if (!hasEvent) {
unsavedEvents.add(myEvent);
}
}
return unsavedEvents;
}
private void cacheControl(SocialUser user) {
SocialCacheControl socialCacheControl = userEventsCacheControl.get(user.getUserName());
if (socialCacheControl == null) {
socialCacheControl = new SocialCacheControl();
userEventsCacheControl.put(user.getUserName(),
socialCacheControl);
}
socialCacheControl.registerNewEvent();
if (socialCacheControl.needToPersist()) {
Path userDir = getUserDirectory(user.getUserName());
try {
ioService.startBatch(userDir.getFileSystem());
List<SocialActivitiesEvent> storedEvents = storeTimeLineInFile(user);
socialClusterMessaging.notifyTimeLineUpdate(user,
storedEvents);
socialCacheControl.reset();
} finally {
ioService.endBatch();
}
}
}
private void cacheControl(SocialActivitiesEvent event,
SocialEventType eventType) {
SocialEventType type = socialEventTypeRepository.findType(event.getType());
SocialCacheControl socialCacheControl = typeEventsCacheControl.get(type);
socialCacheControl.registerNewEvent();
if (socialCacheControl.needToPersist()) {
Path timeLineDir = userServicesBackend.buildPath(SOCIAL_FILES,
type.name());
try {
ioService.startBatch(timeLineDir.getFileSystem());
socialClusterMessaging.notifyTimeLineUpdate(event);
storeTimeLineInFile(eventType);
socialCacheControl.reset();
} finally {
ioService.endBatch();
}
}
}
public void someNodeShutdownAndPersistEvents() {
for (SocialEventType socialEventType : typeEventsFreshEvents.keySet()) {
final List<SocialActivitiesEvent> freshEvents = typeEventsFreshEvents.get(socialEventType);
refreshCache(socialEventType,
freshEvents);
}
for (String user : userEventsTimelineFreshEvents.keySet()) {
final List<SocialActivitiesEvent> userEvents = userEventsTimelineFreshEvents.get(user);
refreshCache(user,
userEvents);
}
}
}