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/**
* Copyright (C) 2022-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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/commands/fle2_compact.h"
#include "mongo/crypto/encryption_fields_gen.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/catalog/collection_catalog.h"
#include "mongo/db/catalog/create_collection.h"
#include "mongo/db/catalog/drop_collection.h"
#include "mongo/db/catalog/rename_collection.h"
#include "mongo/db/catalog_raii.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/create_gen.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/logv2/log.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kStorage
namespace mongo {
namespace {
/**
* Ensures that only one compactStructuredEncryptionData can run at a given time.
*/
Lock::ResourceMutex commandMutex("compactStructuredEncryptionDataCommandMutex");
CompactStats compactEncryptedCompactionCollection(OperationContext* opCtx,
const CompactStructuredEncryptionData& request) {
uassert(6583201,
str::stream() << CompactStructuredEncryptionData::kCommandName
<< " must be run through mongos in a sharded cluster",
!ShardingState::get(opCtx)->enabled());
// Only allow one instance of compactStructuredEncryptionData to run at a time.
Lock::ExclusiveLock fleCompactCommandLock(opCtx, commandMutex);
const auto& edcNss = request.getNamespace();
LOGV2(6319900, "Compacting the encrypted compaction collection", "namespace"_attr = edcNss);
AutoGetDb autoDb(opCtx, edcNss.dbName(), MODE_IX);
uassert(ErrorCodes::NamespaceNotFound,
str::stream() << "Database '" << edcNss.db() << "' does not exist",
autoDb.getDb());
auto catalog = CollectionCatalog::get(opCtx);
Lock::CollectionLock edcLock(opCtx, edcNss, MODE_IS);
// Check the data collection exists and is not a view
auto edc = catalog->lookupCollectionByNamespace(opCtx, edcNss);
if (!edc) {
uassert(ErrorCodes::CommandNotSupportedOnView,
"Cannot compact structured encryption data on a view",
!catalog->lookupView(opCtx, edcNss));
uasserted(ErrorCodes::NamespaceNotFound,
str::stream() << "Collection '" << edcNss << "' does not exist");
}
validateCompactRequest(request, *edc.get());
auto namespaces =
uassertStatusOK(EncryptedStateCollectionsNamespaces::createFromDataCollection(*edc.get()));
// Step 1: rename the ECOC collection if it exists
auto ecoc = catalog->lookupCollectionByNamespace(opCtx, namespaces.ecocNss);
auto ecocRename = catalog->lookupCollectionByNamespace(opCtx, namespaces.ecocRenameNss);
bool renamed = false;
if (ecoc && !ecocRename) {
LOGV2(6319901,
"Renaming the encrypted compaction collection",
"ecocNss"_attr = namespaces.ecocNss,
"ecocRenameNss"_attr = namespaces.ecocRenameNss);
RenameCollectionOptions renameOpts;
validateAndRunRenameCollection(
opCtx, namespaces.ecocNss, namespaces.ecocRenameNss, renameOpts);
ecoc.reset();
renamed = true;
}
if (!ecocRename && !renamed) {
// no pre-existing renamed ECOC collection and the rename did not occur,
// so there is nothing to compact
LOGV2(6548306, "Skipping compaction as there is no ECOC collection to compact");
return CompactStats(ECOCStats(), ECStats(), ECStats());
}
// Step 2: for each encrypted field in compactionTokens, get distinct set of entries 'C'
// from ECOC, and for each entry in 'C', compact ESC and ECC.
CompactStats stats;
{
// acquire IS lock on the ecocRenameNss to prevent it from being dropped during compact
AutoGetCollection tempEcocColl(opCtx, namespaces.ecocRenameNss, MODE_IS);
uassert(ErrorCodes::NamespaceNotFound,
str::stream() << "Renamed encrypted compaction collection "
<< namespaces.ecocRenameNss
<< " no longer exists prior to compaction",
tempEcocColl.getCollection());
stats = processFLECompact(opCtx, request, &getTransactionWithRetriesForMongoD, namespaces);
}
// Step 3: drop the renamed ECOC collection
DropReply dropReply;
uassertStatusOK(
dropCollection(opCtx,
namespaces.ecocRenameNss,
&dropReply,
DropCollectionSystemCollectionMode::kDisallowSystemCollectionDrops));
LOGV2(6319902,
"Done compacting the encrypted compaction collection",
"namespace"_attr = request.getNamespace());
return stats;
}
class CompactStructuredEncryptionDataCmd final
: public TypedCommand<CompactStructuredEncryptionDataCmd> {
public:
using Request = CompactStructuredEncryptionData;
using Reply = CompactStructuredEncryptionData::Reply;
using TC = TypedCommand<CompactStructuredEncryptionDataCmd>;
class Invocation final : public TC::InvocationBase {
public:
using TC::InvocationBase::InvocationBase;
using TC::InvocationBase::request;
Reply typedRun(OperationContext* opCtx) {
return Reply(compactEncryptedCompactionCollection(opCtx, request()));
}
private:
bool supportsWriteConcern() const final {
return false;
}
void doCheckAuthorization(OperationContext* opCtx) const final {
auto* as = AuthorizationSession::get(opCtx->getClient());
uassert(ErrorCodes::Unauthorized,
"Not authorized to compact structured encryption data",
as->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(request().getNamespace()),
ActionType::compactStructuredEncryptionData));
}
NamespaceString ns() const final {
return request().getNamespace();
}
};
typename TC::AllowedOnSecondary secondaryAllowed(ServiceContext*) const final {
return BasicCommand::AllowedOnSecondary::kNever;
}
bool adminOnly() const final {
return false;
}
} compactStructuredEncryptionDataCmd;
} // namespace
} // namespace mongo
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