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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/base/status.h"
#include "mongo/db/commands.h"
#include "mongo/s/catalog/catalog_cache.h"
#include "mongo/s/config.h"
#include "mongo/s/grid.h"
#include "mongo/util/log.h"
namespace mongo {
using std::shared_ptr;
namespace {
class DropDatabaseCmd : public Command {
public:
DropDatabaseCmd() : Command("dropDatabase") { }
virtual bool slaveOk() const {
return true;
}
virtual bool adminOnly() const {
return false;
}
virtual bool isWriteCommandForConfigServer() const {
return false;
}
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
ActionSet actions;
actions.addAction(ActionType::dropDatabase);
out->push_back(Privilege(ResourcePattern::forDatabaseName(dbname), actions));
}
virtual bool run(OperationContext* txn,
const std::string& dbname,
BSONObj& cmdObj,
int options,
std::string& errmsg,
BSONObjBuilder& result) {
// Disallow dropping the config database from mongos
if (dbname == "config") {
return appendCommandStatus(result, Status(ErrorCodes::IllegalOperation,
"Cannot drop the config database"));
}
BSONElement e = cmdObj.firstElement();
if (!e.isNumber() || e.number() != 1) {
errmsg = "invalid params";
return 0;
}
// Refresh the database metadata
grid.catalogCache()->invalidate(dbname);
auto status = grid.catalogCache()->getDatabase(dbname);
if (!status.isOK()) {
if (status == ErrorCodes::DatabaseNotFound) {
result.append("info", "database does not exist");
return true;
}
return appendCommandStatus(result, status.getStatus());
}
log() << "DROP DATABASE: " << dbname;
shared_ptr<DBConfig> conf = status.getValue();
// TODO: Make dropping logic saner and more tolerant of partial drops. This is
// particularly important since a database drop can be aborted by *any* collection
// with a distributed namespace lock taken (migrates/splits)
if (!conf->dropDatabase(errmsg)) {
return false;
}
result.append("dropped", dbname);
return true;
}
} clusterDropDatabaseCmd;
} // namespace
} // namespace mongo
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