| /** |
| * Copyright 2015-2016 Pivotal Software, Inc. |
| * |
| * Licensed 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. |
| **/ |
| |
| #include "catalog/CatalogDatabaseCache.hpp" |
| |
| #include <memory> |
| #include <unordered_map> |
| #include <utility> |
| |
| #include "catalog/Catalog.pb.h" |
| #include "catalog/CatalogRelationSchema.hpp" |
| #include "catalog/CatalogTypedefs.hpp" |
| #include "threading/Mutex.hpp" |
| #include "threading/SpinSharedMutex.hpp" |
| |
| #include "glog/logging.h" |
| |
| using std::make_unique; |
| using std::move; |
| |
| namespace quickstep { |
| |
| bool CatalogDatabaseCache::ProtoIsValid(const serialization::CatalogDatabase &proto) { |
| for (int i = 0; i < proto.relations_size(); ++i) { |
| if (!CatalogRelationSchema::ProtoIsValid(proto.relations(i))) { |
| return false; |
| } |
| } |
| |
| return proto.null_relations_size() == 0; |
| } |
| |
| CatalogDatabaseCache::CatalogDatabaseCache(const serialization::CatalogDatabase &proto) { |
| DCHECK(ProtoIsValid(proto)) |
| << "Attempted to create CatalogDatabaseCache from an invalid proto description:\n" |
| << proto.DebugString(); |
| |
| for (int i = 0; i < proto.relations_size(); ++i) { |
| auto relation_schema = make_unique<const CatalogRelationSchema>(proto.relations(i)); |
| rel_map_.emplace(relation_schema->getID(), move(relation_schema)); |
| } |
| } |
| |
| void CatalogDatabaseCache::update(const serialization::CatalogDatabase &proto) { |
| DCHECK(ProtoIsValid(proto)) |
| << "Attempted to create CatalogDatabaseCache from an invalid proto description:\n" |
| << proto.DebugString(); |
| |
| SpinSharedMutexExclusiveLock<false> lock(relations_mutex_); |
| for (int i = 0; i < proto.relations_size(); ++i) { |
| auto relation_schema = make_unique<const CatalogRelationSchema>(proto.relations(i)); |
| const relation_id rel_id = relation_schema->getID(); |
| |
| auto it = rel_map_.find(rel_id); |
| if (it == rel_map_.end()) { |
| rel_map_.emplace(rel_id, move(relation_schema)); |
| } else { |
| it->second.reset(relation_schema.release()); |
| } |
| } |
| } |
| |
| void CatalogDatabaseCache::dropRelationById(const relation_id id) { |
| SpinSharedMutexExclusiveLock<false> lock(relations_mutex_); |
| auto it = rel_map_.find(id); |
| if (it != rel_map_.end()) { |
| rel_map_.erase(it); |
| } else { |
| LOG(ERROR) << "Dropping a non-exist relation schema by id " << id; |
| } |
| } |
| |
| } // namespace quickstep |