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/**
* Copyright (C) 2018 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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.
*/
#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/catalog_control.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/database_catalog_entry.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/catalog/uuid_catalog.h"
#include "mongo/db/ftdc/ftdc_mongod.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/repair_database.h"
#include "mongo/util/log.h"
namespace mongo {
namespace catalog {
void closeCatalog(OperationContext* opCtx) {
invariant(opCtx->lockState()->isW());
// Closing UUID Catalog: only lookupNSSByUUID will fall back to using pre-closing state to
// allow authorization for currently unknown UUIDs. This is needed because authorization needs
// to work before acquiring locks, and might otherwise spuriously regard a UUID as unknown
// while reloading the catalog.
UUIDCatalog::get(opCtx).onCloseCatalog();
LOG(1) << "closeCatalog: closing UUID catalog";
// Close all databases.
log() << "closeCatalog: closing all databases";
constexpr auto reason = "closing databases for closeCatalog";
DatabaseHolder::getDatabaseHolder().closeAll(opCtx, reason);
// Close the storage engine's catalog.
log() << "closeCatalog: closing storage engine catalog";
opCtx->getServiceContext()->getGlobalStorageEngine()->closeCatalog(opCtx);
}
void openCatalog(OperationContext* opCtx) {
invariant(opCtx->lockState()->isW());
// Load the catalog in the storage engine.
log() << "openCatalog: loading storage engine catalog";
auto storageEngine = opCtx->getServiceContext()->getGlobalStorageEngine();
storageEngine->loadCatalog(opCtx);
log() << "openCatalog: reconciling catalog and idents";
auto indexesToRebuild = storageEngine->reconcileCatalogAndIdents(opCtx);
fassert(40688, indexesToRebuild.getStatus());
// Determine which indexes need to be rebuilt. rebuildIndexesOnCollection() requires that all
// indexes on that collection are done at once, so we use a map to group them together.
StringMap<IndexNameObjs> nsToIndexNameObjMap;
for (auto indexNamespace : indexesToRebuild.getValue()) {
NamespaceString collNss(indexNamespace.first);
auto indexName = indexNamespace.second;
auto dbCatalogEntry = storageEngine->getDatabaseCatalogEntry(opCtx, collNss.db());
invariant(dbCatalogEntry,
str::stream() << "couldn't get database catalog entry for database "
<< collNss.db());
auto collCatalogEntry = dbCatalogEntry->getCollectionCatalogEntry(collNss.toString());
invariant(collCatalogEntry,
str::stream() << "couldn't get collection catalog entry for collection "
<< collNss.toString());
auto indexSpecs = getIndexNameObjs(
opCtx, dbCatalogEntry, collCatalogEntry, [&indexName](const std::string& name) {
return name == indexName;
});
if (!indexSpecs.isOK() || indexSpecs.getValue().first.empty()) {
fassert(40689,
{ErrorCodes::InternalError,
str::stream() << "failed to get index spec for index " << indexName
<< " in collection "
<< collNss.toString()});
}
auto indexesToRebuild = indexSpecs.getValue();
invariant(
indexesToRebuild.first.size() == 1,
str::stream() << "expected to find a list containing exactly 1 index name, but found "
<< indexesToRebuild.first.size());
invariant(
indexesToRebuild.second.size() == 1,
str::stream() << "expected to find a list containing exactly 1 index spec, but found "
<< indexesToRebuild.second.size());
auto& ino = nsToIndexNameObjMap[collNss.ns()];
ino.first.emplace_back(std::move(indexesToRebuild.first.back()));
ino.second.emplace_back(std::move(indexesToRebuild.second.back()));
}
for (const auto& entry : nsToIndexNameObjMap) {
NamespaceString collNss(entry.first);
auto dbCatalogEntry = storageEngine->getDatabaseCatalogEntry(opCtx, collNss.db());
invariant(dbCatalogEntry,
str::stream() << "couldn't get database catalog entry for database "
<< collNss.db());
auto collCatalogEntry = dbCatalogEntry->getCollectionCatalogEntry(collNss.toString());
invariant(collCatalogEntry,
str::stream() << "couldn't get collection catalog entry for collection "
<< collNss.toString());
for (const auto& indexName : entry.second.first) {
log() << "openCatalog: rebuilding index: collection: " << collNss.toString()
<< ", index: " << indexName;
}
fassert(40690,
rebuildIndexesOnCollection(
opCtx, dbCatalogEntry, collCatalogEntry, std::move(entry.second)));
}
// Open all databases and repopulate the UUID catalog.
log() << "openCatalog: reopening all databases";
auto& uuidCatalog = UUIDCatalog::get(opCtx);
std::vector<std::string> databasesToOpen;
storageEngine->listDatabases(&databasesToOpen);
for (auto&& dbName : databasesToOpen) {
LOG(1) << "openCatalog: dbholder reopening database " << dbName;
auto db = DatabaseHolder::getDatabaseHolder().openDb(opCtx, dbName);
invariant(db, str::stream() << "failed to reopen database " << dbName);
std::list<std::string> collections;
db->getDatabaseCatalogEntry()->getCollectionNamespaces(&collections);
for (auto&& collName : collections) {
// Note that the collection name already includes the database component.
NamespaceString collNss(collName);
auto collection = db->getCollection(opCtx, collName);
invariant(collection,
str::stream() << "failed to get valid collection pointer for namespace "
<< collName);
auto uuid = collection->uuid();
invariant(uuid);
LOG(1) << "openCatalog: registering uuid " << uuid->toString() << " for collection "
<< collName;
uuidCatalog.registerUUIDCatalogEntry(*uuid, collection);
// If this is the oplog collection, re-establish the replication system's cached pointer
// to the oplog.
if (collNss.isOplog()) {
log() << "openCatalog: updating cached oplog pointer";
repl::establishOplogCollectionForLogging(opCtx, collection);
}
}
}
// Opening UUID Catalog: The UUID catalog is now in sync with the storage engine catalog. Clear
// the pre-closing state.
UUIDCatalog::get(opCtx).onOpenCatalog();
LOG(1) << "openCatalog: finished reloading UUID catalog";
}
} // namespace catalog
} // namespace mongo
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