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/**
* Copyright (C) 2015 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::kCommand
#include "mongo/platform/basic.h"
#include "mongo/db/catalog/drop_collection.h"
#include "mongo/db/background.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/client.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/curop.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/index_builder.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/server_options.h"
#include "mongo/db/service_context.h"
#include "mongo/db/views/view_catalog.h"
#include "mongo/util/log.h"
namespace mongo {
Status dropCollection(OperationContext* opCtx,
const NamespaceString& collectionName,
BSONObjBuilder& result,
const repl::OpTime& dropOpTime,
DropCollectionSystemCollectionMode systemCollectionMode) {
if (!serverGlobalParams.quiet.load()) {
log() << "CMD: drop " << collectionName;
}
return writeConflictRetry(opCtx, "drop", collectionName.ns(), [&] {
AutoGetDb autoDb(opCtx, collectionName.db(), MODE_X);
Database* const db = autoDb.getDb();
Collection* coll = db ? db->getCollection(opCtx, collectionName) : nullptr;
auto view =
db && !coll ? db->getViewCatalog()->lookup(opCtx, collectionName.ns()) : nullptr;
if (!db || (!coll && !view)) {
return Status(ErrorCodes::NamespaceNotFound, "ns not found");
}
const bool shardVersionCheck = true;
OldClientContext context(opCtx, collectionName.ns(), shardVersionCheck);
bool userInitiatedWritesAndNotPrimary = opCtx->writesAreReplicated() &&
!repl::ReplicationCoordinator::get(opCtx)->canAcceptWritesFor(opCtx, collectionName);
if (userInitiatedWritesAndNotPrimary) {
return Status(ErrorCodes::NotMaster,
str::stream() << "Not primary while dropping collection "
<< collectionName.ns());
}
WriteUnitOfWork wunit(opCtx);
if (!result.hasField("ns")) {
result.append("ns", collectionName.ns());
}
if (coll) {
invariant(!view);
int numIndexes = coll->getIndexCatalog()->numIndexesTotal(opCtx);
BackgroundOperation::assertNoBgOpInProgForNs(collectionName.ns());
Status s = systemCollectionMode ==
DropCollectionSystemCollectionMode::kDisallowSystemCollectionDrops
? db->dropCollection(opCtx, collectionName.ns(), dropOpTime)
: db->dropCollectionEvenIfSystem(opCtx, collectionName, dropOpTime);
if (!s.isOK()) {
return s;
}
result.append("nIndexesWas", numIndexes);
} else {
invariant(view);
Status status = db->dropView(opCtx, collectionName.ns());
if (!status.isOK()) {
return status;
}
}
wunit.commit();
return Status::OK();
});
}
} // namespace mongo
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