org.graylog2.lookup.db.DBCacheService Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog 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.
*
* Graylog 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 Graylog. If not, see .
*/
package org.graylog2.lookup.db;
import com.google.common.collect.ImmutableList;
import com.mongodb.BasicDBObject;
import org.bson.types.ObjectId;
import org.graylog2.bindings.providers.MongoJackObjectMapperProvider;
import org.graylog2.database.MongoConnection;
import org.graylog2.database.PaginatedList;
import org.graylog2.events.ClusterEventBus;
import org.graylog2.lookup.dto.CacheDto;
import org.graylog2.lookup.events.CachesDeleted;
import org.graylog2.lookup.events.CachesUpdated;
import org.mongojack.DBCursor;
import org.mongojack.DBQuery;
import org.mongojack.DBSort;
import org.mongojack.JacksonDBCollection;
import org.mongojack.WriteResult;
import javax.inject.Inject;
import java.util.Collection;
import java.util.Iterator;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
public class DBCacheService {
private final JacksonDBCollection db;
private final ClusterEventBus clusterEventBus;
@Inject
public DBCacheService(MongoConnection mongoConnection,
MongoJackObjectMapperProvider mapper,
ClusterEventBus clusterEventBus) {
this.db = JacksonDBCollection.wrap(mongoConnection.getDatabase().getCollection("lut_caches"),
CacheDto.class,
ObjectId.class,
mapper.get());
this.clusterEventBus = clusterEventBus;
db.createIndex(new BasicDBObject("name", 1), new BasicDBObject("unique", true));
}
public Optional get(String idOrName) {
try {
return Optional.ofNullable(db.findOneById(new ObjectId(idOrName)));
} catch (IllegalArgumentException e) {
// not an ObjectId, try again with name
return Optional.ofNullable(db.findOne(DBQuery.is("name", idOrName)));
}
}
public CacheDto save(CacheDto table) {
WriteResult save = db.save(table);
final CacheDto savedCache = save.getSavedObject();
clusterEventBus.post(CachesUpdated.create(savedCache.id()));
return savedCache;
}
public PaginatedList findPaginated(DBQuery.Query query, DBSort.SortBuilder sort, int page, int perPage) {
try (DBCursor cursor = db.find(query)
.sort(sort)
.limit(perPage)
.skip(perPage * Math.max(0, page - 1))) {
return new PaginatedList<>(asImmutableList(cursor), cursor.count(), page, perPage);
}
}
private ImmutableList asImmutableList(Iterator cursor) {
return ImmutableList.copyOf(cursor);
}
public void delete(String idOrName) {
final Optional cacheDto = get(idOrName);
cacheDto.map(CacheDto::id)
.map(ObjectId::new)
.ifPresent(db::removeById);
cacheDto.ifPresent(cache -> clusterEventBus.post(CachesDeleted.create(cache.id())));
}
public Collection findByIds(Set idSet) {
final DBQuery.Query query = DBQuery.in("_id", idSet.stream().map(ObjectId::new).collect(Collectors.toList()));
try (DBCursor cursor = db.find(query)) {
return asImmutableList(cursor);
}
}
public Collection findAll() {
try (DBCursor cursor = db.find()) {
return asImmutableList(cursor);
}
}
}