/**
* This file is part of Graylog2.
*
* Graylog2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog2 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog2. If not, see <http://www.gnu.org/licenses/>.
*/
package org.graylog2.notifications;
import com.google.common.collect.Lists;
import com.google.inject.Inject;
import com.mongodb.BasicDBObject;
import com.mongodb.DBObject;
import org.bson.types.ObjectId;
import org.graylog2.cluster.Node;
import org.graylog2.database.MongoConnection;
import org.graylog2.database.PersistedServiceImpl;
import org.graylog2.database.ValidationException;
import org.graylog2.plugin.Tools;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
public class NotificationServiceImpl extends PersistedServiceImpl implements NotificationService {
private static final Logger LOG = LoggerFactory.getLogger(NotificationServiceImpl.class);
@Inject
public NotificationServiceImpl(MongoConnection mongoConnection) {
super(mongoConnection);
}
@Override
public Notification build() {
return new NotificationImpl();
}
@Override
public Notification buildNow() {
Notification notification = build();
notification.addTimestamp(Tools.iso8601());
return notification;
}
@Override
public boolean fixed(NotificationImpl.Type type) {
return fixed(type, null);
}
@Override
public boolean fixed(NotificationImpl.Type type, Node node) {
BasicDBObject qry = new BasicDBObject();
qry.put("type", type.toString().toLowerCase());
if (node != null)
qry.put("node_id", node.getNodeId());
return destroyAll(NotificationImpl.class, qry) > 0;
}
@Override
public boolean isFirst(NotificationImpl.Type type) {
return (findOne(NotificationImpl.class, new BasicDBObject("type", type.toString().toLowerCase())) == null);
}
@Override
public List<Notification> all() {
List<Notification> notifications = Lists.newArrayList();
for (DBObject obj : query(NotificationImpl.class, new BasicDBObject(), new BasicDBObject("timestamp", -1))) {
try {
notifications.add(new NotificationImpl(new ObjectId(obj.get("_id").toString()), obj.toMap()));
} catch (IllegalArgumentException e) {
LOG.warn("There is a notification type we can't handle: [" + obj.get("type") + "]");
continue;
}
}
return notifications;
}
@Override
public boolean publishIfFirst(Notification notification) {
// node id should never be empty
if (notification.getNodeId() == null) {
addThisNode(notification);
}
// also the timestamp should never be empty
if (notification.getTimestamp() == null) {
notification.addTimestamp(Tools.iso8601());
}
// Write only if there is no such warning yet.
if (!isFirst(notification.getType())) {
return false;
}
try {
save(notification);
} catch(ValidationException e) {
// We have no validations, but just in case somebody adds some...
LOG.error("Validating user warning failed.", e);
return false;
}
return true;
}
private Notification addThisNode(Notification notification) {
return notification;
}
@Override
public boolean fixed(Notification notification) {
return fixed(notification.getType(), null);
}
@Override
public int destroyAllByType(Notification.Type type) {
return destroyAll(NotificationImpl.class, new BasicDBObject("type", type.toString().toLowerCase()));
}
}