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/**
* Copyright (C) 2019-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 "mongo/base/string_data.h"
#include "mongo/db/catalog/collection_options.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/repl_index_build_state.h"
#include "mongo/db/storage/bson_collection_catalog_entry.h"
#include "mongo/db/storage/kv/kv_prefix.h"
#include "mongo/db/storage/storage_engine.h"
namespace mongo {
/**
* An interface to modify the on-disk catalog metadata.
*/
class DurableCatalog {
DurableCatalog(const DurableCatalog&) = delete;
DurableCatalog& operator=(const DurableCatalog&) = delete;
DurableCatalog(DurableCatalog&&) = delete;
DurableCatalog& operator=(DurableCatalog&&) = delete;
protected:
DurableCatalog() = default;
public:
/**
* `Entry` ties together the common identifiers of a single `_mdb_catalog` document.
*/
struct Entry {
Entry() {}
Entry(RecordId catalogId, std::string ident, NamespaceString nss)
: catalogId(catalogId), ident(std::move(ident)), nss(std::move(nss)) {}
RecordId catalogId;
std::string ident;
NamespaceString nss;
};
virtual ~DurableCatalog() {}
static DurableCatalog* get(OperationContext* opCtx) {
return opCtx->getServiceContext()->getStorageEngine()->getCatalog();
}
virtual void init(OperationContext* opCtx) = 0;
virtual std::vector<Entry> getAllCatalogEntries(OperationContext* opCtx) const = 0;
virtual Entry getEntry(RecordId catalogId) const = 0;
virtual std::string getIndexIdent(OperationContext* opCtx,
RecordId id,
StringData idxName) const = 0;
virtual BSONCollectionCatalogEntry::MetaData getMetaData(OperationContext* opCtx,
RecordId id) const = 0;
/**
* Updates the catalog entry for the collection 'nss' with the fields specified in 'md'. If
* 'md.indexes' contains a new index entry, then this method generates a new index ident and
* adds it to the catalog entry.
*/
virtual void putMetaData(OperationContext* opCtx,
RecordId id,
BSONCollectionCatalogEntry::MetaData& md) = 0;
virtual std::vector<std::string> getAllIdents(OperationContext* opCtx) const = 0;
virtual bool isUserDataIdent(StringData ident) const = 0;
virtual bool isInternalIdent(StringData ident) const = 0;
virtual bool isCollectionIdent(StringData ident) const = 0;
virtual RecordStore* getRecordStore() = 0;
/**
* Create an entry in the catalog for an orphaned collection found in the
* storage engine. Return the generated ns of the collection.
* Note that this function does not recreate the _id index on the collection because it does not
* have access to index catalog.
*/
virtual StatusWith<std::string> newOrphanedIdent(OperationContext* opCtx,
std::string ident) = 0;
virtual std::string getFilesystemPathForDb(const std::string& dbName) const = 0;
/**
* Generate an internal ident name.
*/
virtual std::string newInternalIdent() = 0;
/**
* On success, returns the RecordId which identifies the new record store in the durable catalog
* in addition to ownership of the new RecordStore.
*/
virtual StatusWith<std::pair<RecordId, std::unique_ptr<RecordStore>>> createCollection(
OperationContext* opCtx,
const NamespaceString& nss,
const CollectionOptions& options,
bool allocateDefaultSpace) = 0;
virtual Status renameCollection(OperationContext* opCtx,
RecordId catalogId,
const NamespaceString& toNss,
bool stayTemp) = 0;
virtual Status dropCollection(OperationContext* opCtx, RecordId catalogId) = 0;
/**
* Updates size of a capped Collection.
*/
virtual void updateCappedSize(OperationContext* opCtx, RecordId catalogId, long long size) = 0;
/*
* Updates the expireAfterSeconds field of the given index to the value in newExpireSecs.
* The specified index must already contain an expireAfterSeconds field, and the value in
* that field and newExpireSecs must both be numeric.
*/
virtual void updateTTLSetting(OperationContext* opCtx,
RecordId catalogId,
StringData idxName,
long long newExpireSeconds) = 0;
/** Compares the UUID argument to the UUID obtained from the metadata. Returns true if they are
* equal, false otherwise.
*/
virtual bool isEqualToMetadataUUID(OperationContext* opCtx,
RecordId catalogId,
OptionalCollectionUUID uuid) = 0;
/**
* Updates the 'temp' setting for this collection.
*/
virtual void setIsTemp(OperationContext* opCtx, RecordId catalogId, bool isTemp) = 0;
virtual boost::optional<std::string> getSideWritesIdent(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
/**
* Updates the validator for this collection.
*
* An empty validator removes all validation.
*/
virtual void updateValidator(OperationContext* opCtx,
RecordId catalogId,
const BSONObj& validator,
StringData validationLevel,
StringData validationAction) = 0;
virtual Status removeIndex(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) = 0;
/**
* Updates the persisted catalog entry for 'ns' with the new index and creates the index on
* disk.
*/
virtual Status prepareForIndexBuild(OperationContext* opCtx,
RecordId catalogId,
const IndexDescriptor* spec,
IndexBuildProtocol indexBuildProtocol,
bool isBackgroundSecondaryBuild) = 0;
/**
* Returns whether or not the index is being built with the two-phase index build procedure.
*/
virtual bool isTwoPhaseIndexBuild(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
/**
* Indicate that a build index is now in the "scanning" phase of a hybrid index build. The
* 'constraintViolationsIdent' is only used for unique indexes.
*
* It is only valid to call this when the index is using the kTwoPhase IndexBuildProtocol.
*/
virtual void setIndexBuildScanning(OperationContext* opCtx,
RecordId catalogId,
StringData indexName,
std::string sideWritesIdent,
boost::optional<std::string> constraintViolationsIdent) = 0;
/**
* Returns whether or not this index is building in the "scanning" phase.
*/
virtual bool isIndexBuildScanning(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
/**
* Indicate that a build index is now in the "draining" phase of a hybrid index build.
*
* It is only valid to call this when the index is using the kTwoPhase IndexBuildProtocol.
*/
virtual void setIndexBuildDraining(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) = 0;
/**
* Returns whether or not this index is building in the "draining" phase.
*/
virtual bool isIndexBuildDraining(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
/**
* Indicate that an index build is completed and the index is ready to use.
*/
virtual void indexBuildSuccess(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) = 0;
/**
* Returns true if the index identified by 'indexName' is multikey, and returns false otherwise.
*
* If the 'multikeyPaths' pointer is non-null, then it must point to an empty vector. If this
* index supports tracking path-level multikey information, then this function sets
* 'multikeyPaths' as the path components that cause this index to be multikey.
*
* In particular, if this function returns false and the index supports tracking path-level
* multikey information, then 'multikeyPaths' is initialized as a vector with size equal to the
* number of elements in the index key pattern of empty sets.
*/
virtual bool isIndexMultikey(OperationContext* opCtx,
RecordId catalogId,
StringData indexName,
MultikeyPaths* multikeyPaths) const = 0;
/**
* Sets the index identified by 'indexName' to be multikey.
*
* If 'multikeyPaths' is non-empty, then it must be a vector with size equal to the number of
* elements in the index key pattern. Additionally, at least one path component of the indexed
* fields must cause this index to be multikey.
*
* This function returns true if the index metadata has changed, and returns false otherwise.
*/
virtual bool setIndexIsMultikey(OperationContext* opCtx,
RecordId catalogId,
StringData indexName,
const MultikeyPaths& multikeyPaths) = 0;
virtual boost::optional<std::string> getConstraintViolationsIdent(
OperationContext* opCtx, RecordId catalogId, StringData indexName) const = 0;
/**
* Returns the server-compatibility version of the index build procedure.
*/
virtual long getIndexBuildVersion(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
virtual CollectionOptions getCollectionOptions(OperationContext* opCtx,
RecordId catalogId) const = 0;
virtual int getTotalIndexCount(OperationContext* opCtx, RecordId catalogId) const = 0;
virtual int getCompletedIndexCount(OperationContext* opCtx, RecordId catalogId) const = 0;
virtual BSONObj getIndexSpec(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
virtual void getAllIndexes(OperationContext* opCtx,
RecordId catalogId,
std::vector<std::string>* names) const = 0;
virtual void getReadyIndexes(OperationContext* opCtx,
RecordId catalogId,
std::vector<std::string>* names) const = 0;
virtual bool isIndexPresent(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
virtual bool isIndexReady(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
virtual KVPrefix getIndexPrefix(OperationContext* opCtx,
RecordId catalogId,
StringData indexName) const = 0;
};
} // namespace mongo
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