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/**
* Copyright (C) 2017 10gen 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 <string>
#include "mongo/db/auth/authorization_manager.h"
#include "mongo/db/auth/authorization_manager_global.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/collection_catalog_entry.h"
#include "mongo/db/catalog/database_holder.h"
#include "mongo/db/commands.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/operation_context.h"
#include "mongo/util/log.h"
#include "mongo/util/scopeguard.h"
namespace mongo {
using std::string;
using std::stringstream;
class CmdReplSetResizeOplog : public BasicCommand {
public:
CmdReplSetResizeOplog() : BasicCommand("replSetResizeOplog") {}
virtual bool slaveOk() const final {
return true;
}
bool adminOnly() const final {
return true;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
virtual void help(stringstream& help) const {
help << "resize oplog size";
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) 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 string& dbname,
const BSONObj& jsobj,
BSONObjBuilder& result) {
const NamespaceString nss("local", "oplog.rs");
Lock::GlobalWrite global(opCtx);
Database* database = dbHolder().get(opCtx, nss.db());
if (!database) {
return appendCommandStatus(
result, Status(ErrorCodes::NamespaceNotFound, "database local does not exist"));
}
Collection* coll = database->getCollection(opCtx, nss);
if (!coll) {
return appendCommandStatus(
result, Status(ErrorCodes::NamespaceNotFound, "oplog does not exist"));
}
if (!coll->isCapped()) {
return appendCommandStatus(result,
Status(ErrorCodes::IllegalOperation, "oplog isn't capped"));
}
if (!jsobj["size"].isNumber()) {
return appendCommandStatus(
result,
Status(ErrorCodes::InvalidOptions, "invalid size field, size should be a number"));
}
long long size = jsobj["size"].numberLong();
if (size < 990LL * 1024 * 1024) {
return appendCommandStatus(
result, Status(ErrorCodes::InvalidOptions, "oplog size should be 990MB at least"));
}
WriteUnitOfWork wunit(opCtx);
Status status = coll->getRecordStore()->updateCappedSize(opCtx, size);
if (!status.isOK()) {
return appendCommandStatus(result, status);
}
CollectionCatalogEntry* entry = coll->getCatalogEntry();
entry->updateCappedSize(opCtx, size);
wunit.commit();
LOG(0) << "replSetResizeOplog success, currentSize:" << size;
return appendCommandStatus(result, Status::OK());
}
} cmdReplSetResizeOplog;
}
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