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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.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kStorage
#define LOGV2_FOR_RECOVERY(ID, DLEVEL, MESSAGE, ...) \
LOGV2_DEBUG_OPTIONS(ID, DLEVEL, {logv2::LogComponent::kStorageRecovery}, MESSAGE, ##__VA_ARGS__)
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/catalog_control.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/collection_catalog.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/ftdc/ftdc_mongod.h"
#include "mongo/db/index_builds_coordinator.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/rebuild_indexes.h"
#include "mongo/logv2/log.h"
namespace mongo {
namespace catalog {
MinVisibleTimestampMap closeCatalog(OperationContext* opCtx) {
invariant(opCtx->lockState()->isW());
IndexBuildsCoordinator::get(opCtx)->assertNoIndexBuildInProgress();
MinVisibleTimestampMap minVisibleTimestampMap;
std::vector<std::string> allDbs =
opCtx->getServiceContext()->getStorageEngine()->listDatabases();
auto databaseHolder = DatabaseHolder::get(opCtx);
for (auto&& dbName : allDbs) {
const auto db = databaseHolder->getDb(opCtx, dbName);
for (auto collIt = db->begin(opCtx); collIt != db->end(opCtx); ++collIt) {
auto coll = *collIt;
if (!coll) {
break;
}
OptionalCollectionUUID uuid = coll->uuid();
boost::optional<Timestamp> minVisible = coll->getMinimumVisibleSnapshot();
// If there's a minimum visible, invariant there's also a UUID.
invariant(!minVisible || uuid);
if (uuid && minVisible) {
LOGV2_DEBUG(20269,
1,
"closeCatalog: preserving min visible timestamp.",
"coll_ns"_attr = coll->ns(),
"uuid"_attr = uuid,
"minVisible"_attr = minVisible);
minVisibleTimestampMap[*uuid] = *minVisible;
}
}
}
// Need to mark the CollectionCatalog as open if we our closeAll fails, dismissed if successful.
auto reopenOnFailure =
makeGuard([opCtx] { CollectionCatalog::get(opCtx).onOpenCatalog(opCtx); });
// Closing CollectionCatalog: 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.
CollectionCatalog::get(opCtx).onCloseCatalog(opCtx);
LOGV2_DEBUG(20270, 1, "closeCatalog: closing collection catalog");
// Close all databases.
LOGV2(20271, "closeCatalog: closing all databases");
databaseHolder->closeAll(opCtx);
// Close the storage engine's catalog.
LOGV2(20272, "closeCatalog: closing storage engine catalog");
opCtx->getServiceContext()->getStorageEngine()->closeCatalog(opCtx);
reopenOnFailure.dismiss();
return minVisibleTimestampMap;
}
void openCatalog(OperationContext* opCtx, const MinVisibleTimestampMap& minVisibleTimestampMap) {
invariant(opCtx->lockState()->isW());
// Load the catalog in the storage engine.
LOGV2(20273, "openCatalog: loading storage engine catalog");
auto storageEngine = opCtx->getServiceContext()->getStorageEngine();
// Ignore orphaned idents because this function is used during rollback and not at
// startup recovery, when we may try to recover orphaned idents.
auto loadingFromUncleanShutdown = false;
storageEngine->loadCatalog(opCtx, loadingFromUncleanShutdown);
LOGV2(20274, "openCatalog: reconciling catalog and idents");
// Retain unknown internal idents because this function is used during rollback and not at
// startup recovery, when we may drop unknown internal idents.
auto internalIdentReconcilePolicy = StorageEngine::InternalIdentReconcilePolicy::kRetain;
auto reconcileResult = fassert(
40688, storageEngine->reconcileCatalogAndIdents(opCtx, internalIdentReconcilePolicy));
// 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 (StorageEngine::IndexIdentifier indexIdentifier : reconcileResult.indexesToRebuild) {
auto indexName = indexIdentifier.indexName;
auto indexSpecs =
getIndexNameObjs(opCtx,
indexIdentifier.catalogId,
[&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 " << indexIdentifier.nss});
}
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[indexIdentifier.nss.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 collection = CollectionCatalog::get(opCtx).lookupCollectionByNamespace(opCtx, collNss);
invariant(collection, str::stream() << "couldn't get collection " << collNss.toString());
for (const auto& indexName : entry.second.first) {
LOGV2(20275,
"openCatalog: rebuilding index: collection: {collNss}, index: {indexName}",
"openCatalog: rebuilding index",
"namespace"_attr = collNss.toString(),
"index"_attr = indexName);
}
std::vector<BSONObj> indexSpecs = entry.second.second;
fassert(40690, rebuildIndexesOnCollection(opCtx, collection, indexSpecs, RepairData::kNo));
}
// Once all unfinished index builds have been dropped and the catalog has been reloaded, resume
// or restart any unfinished index builds. This will not resume/restart any index builds to
// completion, but rather start the background thread, build the index, and wait for a
// replicated commit or abort oplog entry.
IndexBuildsCoordinator::get(opCtx)->restartIndexBuildsForRecovery(
opCtx, reconcileResult.indexBuildsToRestart, reconcileResult.indexBuildsToResume);
// Open all databases and repopulate the CollectionCatalog.
LOGV2(20276, "openCatalog: reopening all databases");
auto databaseHolder = DatabaseHolder::get(opCtx);
std::vector<std::string> databasesToOpen = storageEngine->listDatabases();
for (auto&& dbName : databasesToOpen) {
LOGV2_FOR_RECOVERY(
23992, 1, "openCatalog: dbholder reopening database", "db"_attr = dbName);
auto db = databaseHolder->openDb(opCtx, dbName);
invariant(db, str::stream() << "failed to reopen database " << dbName);
for (auto&& collNss :
CollectionCatalog::get(opCtx).getAllCollectionNamesFromDb(opCtx, dbName)) {
// Note that the collection name already includes the database component.
auto collection =
CollectionCatalog::get(opCtx).lookupCollectionByNamespace(opCtx, collNss);
invariant(collection,
str::stream()
<< "failed to get valid collection pointer for namespace " << collNss);
if (minVisibleTimestampMap.count(collection->uuid()) > 0) {
collection->setMinimumVisibleSnapshot(
minVisibleTimestampMap.find(collection->uuid())->second);
}
// If this is the oplog collection, re-establish the replication system's cached pointer
// to the oplog.
if (collNss.isOplog()) {
LOGV2(20277, "openCatalog: updating cached oplog pointer");
collection->establishOplogCollectionForLogging(opCtx);
}
}
}
// Opening CollectionCatalog: The collection catalog is now in sync with the storage engine
// catalog. Clear the pre-closing state.
CollectionCatalog::get(opCtx).onOpenCatalog(opCtx);
opCtx->getServiceContext()->incrementCatalogGeneration();
LOGV2(20278, "openCatalog: finished reloading collection catalog");
}
} // namespace catalog
} // namespace mongo
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