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// collection_to_capped.cpp
/**
* Copyright (C) 2013-2014 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.
*/
#include "mongo/platform/basic.h"
#include <boost/scoped_ptr.hpp>
#include "mongo/db/background.h"
#include "mongo/db/catalog/capped_utils.h"
#include "mongo/db/client.h"
#include "mongo/db/commands.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/service_context.h"
#include "mongo/db/index_builder.h"
#include "mongo/db/op_observer.h"
#include "mongo/db/operation_context_impl.h"
#include "mongo/db/query/find.h"
#include "mongo/db/query/internal_plans.h"
#include "mongo/db/repl/replication_coordinator_global.h"
namespace mongo {
using boost::scoped_ptr;
using std::string;
using std::stringstream;
class CmdCloneCollectionAsCapped : public Command {
public:
CmdCloneCollectionAsCapped() : Command( "cloneCollectionAsCapped" ) {}
virtual bool slaveOk() const { return false; }
virtual bool isWriteCommandForConfigServer() const { return true; }
virtual void help( stringstream &help ) const {
help << "{ cloneCollectionAsCapped:<fromName>, toCollection:<toName>, size:<sizeInBytes> }";
}
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
ActionSet sourceActions;
sourceActions.addAction(ActionType::find);
out->push_back(Privilege(parseResourcePattern(dbname, cmdObj), sourceActions));
ActionSet targetActions;
targetActions.addAction(ActionType::insert);
targetActions.addAction(ActionType::createIndex);
targetActions.addAction(ActionType::convertToCapped);
std::string collection = cmdObj.getStringField("toCollection");
uassert(16708, "bad 'toCollection' value", !collection.empty());
out->push_back(Privilege(ResourcePattern::forExactNamespace(
NamespaceString(dbname, collection)),
targetActions));
}
bool run(OperationContext* txn,
const string& dbname,
BSONObj& jsobj,
int,
string& errmsg,
BSONObjBuilder& result) {
string from = jsobj.getStringField( "cloneCollectionAsCapped" );
string to = jsobj.getStringField( "toCollection" );
double size = jsobj.getField( "size" ).number();
bool temp = jsobj.getField( "temp" ).trueValue();
if ( from.empty() || to.empty() || size == 0 ) {
errmsg = "invalid command spec";
return false;
}
ScopedTransaction transaction(txn, MODE_IX);
AutoGetDb autoDb(txn, dbname, MODE_X);
if (!repl::getGlobalReplicationCoordinator()->canAcceptWritesForDatabase(dbname)) {
return appendCommandStatus(result, Status(ErrorCodes::NotMaster, str::stream()
<< "Not primary while cloning collection " << from << " to " << to
<< " (as capped)"));
}
Database* const db = autoDb.getDb();
if (!db) {
return appendCommandStatus(result,
Status(ErrorCodes::DatabaseNotFound,
str::stream() << "database " << dbname
<< " not found"));
}
Status status = cloneCollectionAsCapped(txn, db, from, to, size, temp);
return appendCommandStatus( result, status );
}
} cmdCloneCollectionAsCapped;
/* jan2010:
Converts the given collection to a capped collection w/ the specified size.
This command is not highly used, and is not currently supported with sharded
environments.
*/
class CmdConvertToCapped : public Command {
public:
CmdConvertToCapped() : Command( "convertToCapped" ) {}
virtual bool slaveOk() const { return false; }
virtual bool isWriteCommandForConfigServer() const { return true; }
virtual void help( stringstream &help ) const {
help << "{ convertToCapped:<fromCollectionName>, size:<sizeInBytes> }";
}
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) {
ActionSet actions;
actions.addAction(ActionType::convertToCapped);
out->push_back(Privilege(parseResourcePattern(dbname, cmdObj), actions));
}
bool run(OperationContext* txn,
const string& dbname,
BSONObj& jsobj,
int,
string& errmsg,
BSONObjBuilder& result) {
string shortSource = jsobj.getStringField( "convertToCapped" );
double size = jsobj.getField( "size" ).number();
if (shortSource.empty() || size == 0) {
errmsg = "invalid command spec";
return false;
}
return appendCommandStatus(result,
convertToCapped(txn,
NamespaceString(dbname, shortSource),
size));
}
} cmdConvertToCapped;
}
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