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/**
* 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 <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/init.h"
#include "mongo/base/status.h"
#include "mongo/bson/util/builder.h"
#include "mongo/client/dbclientinterface.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/collection.h"
#include "mongo/db/catalog/document_validation.h"
#include "mongo/db/cloner.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/copydb.h"
#include "mongo/db/commands/rename_collection.h"
#include "mongo/db/db.h"
#include "mongo/db/index_builder.h"
#include "mongo/db/instance.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/ops/insert.h"
#include "mongo/db/repl/isself.h"
#include "mongo/db/storage/storage_options.h"
#include "mongo/util/log.h"
namespace mongo {
using std::unique_ptr;
using std::string;
using std::stringstream;
using std::endl;
class CmdCloneCollection : public Command {
public:
CmdCloneCollection() : Command("cloneCollection") {}
virtual bool slaveOk() const {
return false;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
virtual std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const {
return parseNsFullyQualified(dbname, cmdObj);
}
virtual Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) {
std::string ns = parseNs(dbname, cmdObj);
ActionSet actions;
actions.addAction(ActionType::insert);
actions.addAction(ActionType::createIndex); // SERVER-11418
if (shouldBypassDocumentValidationForCommand(cmdObj)) {
actions.addAction(ActionType::bypassDocumentValidation);
}
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forExactNamespace(NamespaceString(ns)), actions)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
virtual void help(stringstream& help) const {
help << "{ cloneCollection: <collection>, from: <host> [,query: <query_filter>] "
"[,copyIndexes:<bool>] }"
"\nCopies a collection from one server to another. Do not use on a single server "
"as the destination "
"is placed at the same db.collection (namespace) as the source.\n";
}
virtual bool run(OperationContext* txn,
const string& dbname,
BSONObj& cmdObj,
int,
string& errmsg,
BSONObjBuilder& result) {
boost::optional<DisableDocumentValidation> maybeDisableValidation;
if (shouldBypassDocumentValidationForCommand(cmdObj))
maybeDisableValidation.emplace(txn);
string fromhost = cmdObj.getStringField("from");
if (fromhost.empty()) {
errmsg = "missing 'from' parameter";
return false;
}
{
HostAndPort h(fromhost);
if (repl::isSelf(h, txn->getServiceContext())) {
errmsg = "can't cloneCollection from self";
return false;
}
}
string collection = parseNs(dbname, cmdObj);
Status allowedWriteStatus = userAllowedWriteNS(dbname, collection);
if (!allowedWriteStatus.isOK()) {
return appendCommandStatus(result, allowedWriteStatus);
}
BSONObj query = cmdObj.getObjectField("query");
if (query.isEmpty())
query = BSONObj();
BSONElement copyIndexesSpec = cmdObj.getField("copyindexes");
bool copyIndexes = copyIndexesSpec.isBoolean() ? copyIndexesSpec.boolean() : true;
log() << "cloneCollection. db:" << dbname << " collection:" << collection
<< " from: " << fromhost << " query: " << query << " "
<< (copyIndexes ? "" : ", not copying indexes") << endl;
Cloner cloner;
unique_ptr<DBClientConnection> myconn;
myconn.reset(new DBClientConnection());
if (!myconn->connect(HostAndPort(fromhost), StringData(), errmsg))
return false;
cloner.setConnection(myconn.release());
return cloner.copyCollection(txn, collection, query, errmsg, copyIndexes);
}
} cmdCloneCollection;
} // namespace mongo
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