/**
* Copyright (C) 2008 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 .
*
* 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/auth/action_set.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/auth/resource_pattern.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/cloner.h"
#include "mongo/db/commands.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/jsobj.h"
#include "mongo/s/grid.h"
#include "mongo/util/log.h"
namespace {
using namespace mongo;
using std::set;
using std::string;
using std::stringstream;
/* The clone command is deprecated. See http://dochub.mongodb.org/core/copydb-clone-deprecation.
Usage:
mydb.$cmd.findOne( { clone: "fromhost" } );
Note: doesn't work with authentication enabled, except as internal operation or for
old-style users for backwards compatibility.
*/
class CmdClone : public BasicCommand {
public:
CmdClone() : BasicCommand("clone") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
std::string help() const override {
return "clone this database from an instance of the db on another host\n"
"{clone: \"host13\"[, slaveOk: ]}";
}
virtual Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const {
ActionSet actions;
actions.addAction(ActionType::insert);
actions.addAction(ActionType::createIndex);
if (shouldBypassDocumentValidationForCommand(cmdObj)) {
actions.addAction(ActionType::bypassDocumentValidation);
}
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forDatabaseName(dbname), actions)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
virtual bool run(OperationContext* opCtx,
const string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) {
const char* deprecationWarning =
"Support for the clone command has been deprecated. See "
"http://dochub.mongodb.org/core/copydb-clone-deprecation";
warning() << deprecationWarning;
result.append("note", deprecationWarning);
boost::optional maybeDisableValidation;
if (shouldBypassDocumentValidationForCommand(cmdObj)) {
maybeDisableValidation.emplace(opCtx);
}
string from = cmdObj.getStringField("clone");
if (from.empty())
return false;
CloneOptions opts;
opts.fromDB = dbname;
opts.slaveOk = cmdObj["slaveOk"].trueValue();
// collsToIgnore is only used by movePrimary and contains a list of the
// sharded collections.
if (cmdObj["collsToIgnore"].type() == Array) {
BSONObjIterator it(cmdObj["collsToIgnore"].Obj());
while (it.more()) {
BSONElement e = it.next();
if (e.type() == String) {
opts.shardedColls.insert(e.String());
}
}
}
// Clone the non-ignored collections.
set clonedColls;
Lock::DBLock dbXLock(opCtx, dbname, MODE_X);
Cloner cloner;
Status status = cloner.copyDb(opCtx, dbname, from, opts, &clonedColls);
BSONArrayBuilder barr;
barr.append(clonedColls);
result.append("clonedColls", barr.arr());
uassertStatusOK(status);
return true;
}
} cmdClone;
} // namespace