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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <map>
#include <memory>
#include <string>
#include "mongo/base/string_data.h"
#include "mongo/db/catalog/collection_catalog.h"
#include "mongo/db/catalog/collection_options.h"
#include "mongo/db/record_id.h"
#include "mongo/db/storage/bson_collection_catalog_entry.h"
#include "mongo/db/storage/durable_catalog.h"
#include "mongo/db/storage/kv/kv_prefix.h"
#include "mongo/platform/mutex.h"
namespace mongo {
class OperationContext;
class RecordStore;
class StorageEngineInterface;
class DurableCatalogImpl : public DurableCatalog {
public:
class FeatureTracker;
/**
* The RecordStore must be thread-safe, in particular with concurrent calls to
* RecordStore::find, updateRecord, insertRecord, deleteRecord and dataFor. The
* DurableCatalogImpl does not utilize Cursors and those methods may omit further protection.
*/
DurableCatalogImpl(RecordStore* rs,
bool directoryPerDb,
bool directoryForIndexes,
StorageEngineInterface* engine);
~DurableCatalogImpl();
void init(OperationContext* opCtx);
std::vector<Entry> getAllCatalogEntries(OperationContext* opCtx) const;
Entry getEntry(RecordId catalogId) const;
std::string getCollectionIdent(RecordId catalogId) const;
std::string getIndexIdent(OperationContext* opCtx,
RecordId catalogId,
StringData idxName) const;
BSONCollectionCatalogEntry::MetaData getMetaData(OperationContext* opCtx,
RecordId catalogId) const;
void putMetaData(OperationContext* opCtx,
RecordId catalogId,
BSONCollectionCatalogEntry::MetaData& md);
std::vector<std::string> getAllIdents(OperationContext* opCtx) const;
bool isUserDataIdent(StringData ident) const;
bool isInternalIdent(StringData ident) const;
bool isCollectionIdent(StringData ident) const;
FeatureTracker* getFeatureTracker() const {
invariant(_featureTracker);
return _featureTracker.get();
}
RecordStore* getRecordStore() {
return _rs;
}
StatusWith<std::string> newOrphanedIdent(OperationContext* opCtx, std::string ident);
std::string getFilesystemPathForDb(const std::string& dbName) const;
std::string newInternalIdent();
StatusWith<std::pair<RecordId, std::unique_ptr<RecordStore>>> createCollection(
OperationContext* opCtx,
const NamespaceString& nss,
const CollectionOptions& options,
bool allocateDefaultSpace);
Status renameCollection(OperationContext* opCtx,
RecordId catalogId,
const NamespaceString& toNss,
bool stayTemp);
Status dropCollection(OperationContext* opCtx, RecordId catalogId);
void updateCappedSize(OperationContext* opCtx, RecordId catalogId, long long size);
void updateTTLSetting(OperationContext* opCtx,
RecordId catalogId,
StringData idxName,
long long newExpireSeconds);
bool isEqualToMetadataUUID(OperationContext* opCtx,
RecordId catalogId,
OptionalCollectionUUID uuid);
void setIsTemp(OperationContext* opCtx, RecordId catalogId, bool isTemp);
void updateValidator(OperationContext* opCtx,
RecordId catalogId,
const BSONObj& validator,
StringData validationLevel,
StringData validationAction);
Status removeIndex(OperationContext* opCtx, RecordId catalogId, StringData indexName);
Status prepareForIndexBuild(OperationContext* opCtx,
RecordId catalogId,
const IndexDescriptor* spec,
boost::optional<UUID> buildUUID,
bool isBackgroundSecondaryBuild);
boost::optional<UUID> getIndexBuildUUID(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const;
void indexBuildSuccess(OperationContext* opCtx, RecordId catalogId, StringData indexName);
bool isIndexMultikey(OperationContext* opCtx,
RecordId catalogId,
StringData indexName,
MultikeyPaths* multikeyPaths) const;
bool setIndexIsMultikey(OperationContext* opCtx,
RecordId catalogId,
StringData indexName,
const MultikeyPaths& multikeyPaths);
CollectionOptions getCollectionOptions(OperationContext* opCtx, RecordId catalogId) const;
int getTotalIndexCount(OperationContext* opCtx, RecordId catalogId) const;
int getCompletedIndexCount(OperationContext* opCtx, RecordId catalogId) const;
BSONObj getIndexSpec(OperationContext* opCtx, RecordId catalogId, StringData indexName) const;
void getAllIndexes(OperationContext* opCtx,
RecordId catalogId,
std::vector<std::string>* names) const;
void getReadyIndexes(OperationContext* opCtx,
RecordId catalogId,
std::vector<std::string>* names) const;
bool isIndexPresent(OperationContext* opCtx, RecordId catalogId, StringData indexName) const;
bool isIndexReady(OperationContext* opCtx, RecordId catalogId, StringData indexName) const;
KVPrefix getIndexPrefix(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const;
private:
class AddIdentChange;
class RemoveIdentChange;
class AddIndexChange;
class RemoveIndexChange;
friend class StorageEngineImpl;
friend class DurableCatalogImplTest;
friend class StorageEngineTest;
BSONObj _findEntry(OperationContext* opCtx, RecordId catalogId) const;
StatusWith<Entry> _addEntry(OperationContext* opCtx,
NamespaceString nss,
const CollectionOptions& options,
KVPrefix prefix);
Status _replaceEntry(OperationContext* opCtx,
RecordId catalogId,
const NamespaceString& toNss,
bool stayTemp);
Status _removeEntry(OperationContext* opCtx, RecordId catalogId);
/**
* Generates a new unique identifier for a new "thing".
* @param nss - the containing namespace
* @param kind - what this "thing" is, likely collection or index
*/
std::string _newUniqueIdent(NamespaceString nss, const char* kind);
// Helpers only used by constructor and init(). Don't call from elsewhere.
static std::string _newRand();
bool _hasEntryCollidingWithRand() const;
RecordStore* _rs; // not owned
const bool _directoryPerDb;
const bool _directoryForIndexes;
// These two are only used for ident generation inside _newUniqueIdent.
std::string _rand; // effectively const after init() returns
AtomicWord<unsigned long long> _next;
std::map<RecordId, Entry> _catalogIdToEntryMap;
mutable Mutex _catalogIdToEntryMapLock =
MONGO_MAKE_LATCH("DurableCatalogImpl::_catalogIdToEntryMap");
// Manages the feature document that may be present in the DurableCatalogImpl. '_featureTracker'
// is guaranteed to be non-null after DurableCatalogImpl::init() is called.
std::unique_ptr<FeatureTracker> _featureTracker;
StorageEngineInterface* const _engine;
};
} // namespace mongo
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