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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_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kStorage
#include "mongo/platform/basic.h"
#include <string>
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/commands.h"
#include "mongo/db/concurrency/write_conflict_exception.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/storage/durable_catalog.h"
#include "mongo/util/log.h"
namespace mongo {
namespace {
class CmdReplSetResizeOplog : public BasicCommand {
public:
CmdReplSetResizeOplog() : BasicCommand("replSetResizeOplog") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool adminOnly() const final {
return true;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
std::string help() const override {
return "resize oplog size in MB";
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const final {
AuthorizationSession* authzSession = AuthorizationSession::get(client);
if (authzSession->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::replSetResizeOplog)) {
return Status::OK();
}
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
bool run(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& jsobj,
BSONObjBuilder& result) {
AutoGetCollection autoColl(opCtx, NamespaceString::kRsOplogNamespace, MODE_X);
Database* database = autoColl.getDb();
uassert(ErrorCodes::NamespaceNotFound, "database local does not exist", database);
Collection* coll = autoColl.getCollection();
uassert(ErrorCodes::NamespaceNotFound, "oplog does not exist", coll);
uassert(ErrorCodes::IllegalOperation, "oplog isn't capped", coll->isCapped());
uassert(ErrorCodes::InvalidOptions,
"invalid size field, size should be a number",
jsobj["size"].isNumber());
long long sizeMb = jsobj["size"].numberLong();
uassert(ErrorCodes::InvalidOptions, "oplog size should be 990MB at least", sizeMb >= 990L);
const long long kMB = 1024 * 1024;
const long long kPB = kMB * 1024 * 1024 * 1024;
uassert(ErrorCodes::InvalidOptions,
"oplog size in MB cannot exceed maximum of 1PB",
sizeMb <= kPB / kMB);
long long size = sizeMb * kMB;
return writeConflictRetry(opCtx, "replSetResizeOplog", coll->ns().ns(), [&] {
WriteUnitOfWork wunit(opCtx);
Status status = coll->getRecordStore()->updateCappedSize(opCtx, size);
uassertStatusOK(status);
DurableCatalog::get(opCtx)->updateCappedSize(opCtx, coll->ns(), size);
wunit.commit();
LOG(0) << "replSetResizeOplog success, currentSize:" << size;
return true;
});
}
} cmdReplSetResizeOplog;
} // namespace
} // namespace mongo
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