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/**
* 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.contentpacks.facades;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableSet;
import org.graylog2.contentpacks.EntityDescriptorIds;
import org.graylog2.contentpacks.model.ModelId;
import org.graylog2.contentpacks.model.ModelType;
import org.graylog2.contentpacks.model.ModelTypes;
import org.graylog2.contentpacks.model.constraints.Constraint;
import org.graylog2.contentpacks.model.constraints.PluginVersionConstraint;
import org.graylog2.contentpacks.model.entities.Entity;
import org.graylog2.contentpacks.model.entities.EntityDescriptor;
import org.graylog2.contentpacks.model.entities.EntityExcerpt;
import org.graylog2.contentpacks.model.entities.EntityV1;
import org.graylog2.contentpacks.model.entities.LookupCacheEntity;
import org.graylog2.contentpacks.model.entities.NativeEntity;
import org.graylog2.contentpacks.model.entities.NativeEntityDescriptor;
import org.graylog2.contentpacks.model.entities.references.ValueReference;
import org.graylog2.jackson.TypeReferences;
import org.graylog2.lookup.db.DBCacheService;
import org.graylog2.lookup.dto.CacheDto;
import org.graylog2.plugin.PluginMetaData;
import org.graylog2.plugin.lookup.LookupCacheConfiguration;
import javax.inject.Inject;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
import static org.graylog2.contentpacks.model.entities.references.ReferenceMapUtils.toReferenceMap;
import static org.graylog2.contentpacks.model.entities.references.ReferenceMapUtils.toValueMap;
public class LookupCacheFacade implements EntityFacade {
public static final ModelType TYPE_V1 = ModelTypes.LOOKUP_CACHE_V1;
private final ObjectMapper objectMapper;
private final DBCacheService cacheService;
private final Set pluginMetaData;
@Inject
public LookupCacheFacade(ObjectMapper objectMapper,
DBCacheService cacheService,
Set pluginMetaData) {
this.objectMapper = objectMapper;
this.cacheService = cacheService;
this.pluginMetaData = pluginMetaData;
}
@VisibleForTesting
Entity exportNativeEntity(CacheDto cacheDto, EntityDescriptorIds entityDescriptorIds) {
// TODO: Create independent representation of entity?
final Map configuration = objectMapper.convertValue(cacheDto.config(), TypeReferences.MAP_STRING_OBJECT);
final LookupCacheEntity lookupCacheEntity = LookupCacheEntity.create(
ValueReference.of(cacheDto.name()),
ValueReference.of(cacheDto.title()),
ValueReference.of(cacheDto.description()),
toReferenceMap(configuration));
final JsonNode data = objectMapper.convertValue(lookupCacheEntity, JsonNode.class);
final Set constraints = versionConstraints(cacheDto);
return EntityV1.builder()
.id(ModelId.of(entityDescriptorIds.getOrThrow(cacheDto.id(), ModelTypes.LOOKUP_CACHE_V1)))
.type(ModelTypes.LOOKUP_CACHE_V1)
.constraints(ImmutableSet.copyOf(constraints))
.data(data)
.build();
}
private Set versionConstraints(CacheDto cacheDto) {
// TODO: Find more robust method of identifying the providing plugin
final String packageName = cacheDto.config().getClass().getPackage().getName();
return pluginMetaData.stream()
.filter(metaData -> packageName.startsWith(metaData.getClass().getPackage().getName()))
.map(PluginVersionConstraint::of)
.collect(Collectors.toSet());
}
@Override
public NativeEntity createNativeEntity(Entity entity,
Map parameters,
Map nativeEntities,
String username) {
if (entity instanceof EntityV1) {
return decode((EntityV1) entity, parameters);
} else {
throw new IllegalArgumentException("Unsupported entity version: " + entity.getClass());
}
}
private NativeEntity decode(EntityV1 entity, Map parameters) {
final LookupCacheEntity lookupCacheEntity = objectMapper.convertValue(entity.data(), LookupCacheEntity.class);
final LookupCacheConfiguration configuration = objectMapper.convertValue(toValueMap(lookupCacheEntity.configuration(), parameters), LookupCacheConfiguration.class);
final CacheDto cacheDto = CacheDto.builder()
.name(lookupCacheEntity.name().asString(parameters))
.title(lookupCacheEntity.title().asString(parameters))
.description(lookupCacheEntity.description().asString(parameters))
.config(configuration)
.build();
final CacheDto savedCacheDto = cacheService.save(cacheDto);
return NativeEntity.create(entity.id(), savedCacheDto.id(), TYPE_V1, savedCacheDto.title(), savedCacheDto);
}
@Override
public Optional> findExisting(Entity entity, Map parameters) {
if (entity instanceof EntityV1) {
return findExisting((EntityV1) entity, parameters);
} else {
throw new IllegalArgumentException("Unsupported entity version: " + entity.getClass());
}
}
private Optional> findExisting(EntityV1 entity, Map parameters) {
final LookupCacheEntity cacheEntity = objectMapper.convertValue(entity.data(), LookupCacheEntity.class);
final String name = cacheEntity.name().asString(parameters);
final Optional existingCache = cacheService.get(name);
return existingCache.map(cache -> NativeEntity.create(entity.id(), cache.id(), TYPE_V1, cache.title(), cache));
}
@Override
public Optional> loadNativeEntity(NativeEntityDescriptor nativeEntityDescriptor) {
return cacheService.get(nativeEntityDescriptor.id().id())
.map(entity -> NativeEntity.create(nativeEntityDescriptor, entity));
}
@Override
public void delete(CacheDto nativeEntity) {
cacheService.delete(nativeEntity.id());
}
@Override
public EntityExcerpt createExcerpt(CacheDto cacheDto) {
return EntityExcerpt.builder()
.id(ModelId.of(cacheDto.id()))
.type(ModelTypes.LOOKUP_CACHE_V1)
.title(cacheDto.title())
.build();
}
@Override
public Set listEntityExcerpts() {
return cacheService.findAll().stream()
.map(this::createExcerpt)
.collect(Collectors.toSet());
}
@Override
public Optional exportEntity(EntityDescriptor entityDescriptor, EntityDescriptorIds entityDescriptorIds) {
final ModelId modelId = entityDescriptor.id();
return cacheService.get(modelId.id()).map(cacheDto -> exportNativeEntity(cacheDto, entityDescriptorIds));
}
}
