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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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 "mongo/db/auth/action_type.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/commands.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/keypattern.h"
#include "mongo/db/s/shard_key_index_util.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
namespace mongo {
namespace {
class CheckShardingIndex : public ErrmsgCommandDeprecated {
public:
CheckShardingIndex() : ErrmsgCommandDeprecated("checkShardingIndex") {}
std::string help() const override {
return "Internal command.\n";
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) const override {
ActionSet actions;
actions.addAction(ActionType::find);
out->push_back(Privilege(parseResourcePattern(dbname, cmdObj), actions));
}
std::string parseNs(const std::string& dbname, const BSONObj& cmdObj) const override {
return CommandHelpers::parseNsFullyQualified(cmdObj);
}
bool errmsgRun(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& jsobj,
std::string& errmsg,
BSONObjBuilder& result) override {
const NamespaceString nss = NamespaceString(parseNs(dbname, jsobj));
BSONObj keyPattern = jsobj.getObjectField("keyPattern");
if (keyPattern.isEmpty()) {
errmsg = "no key pattern found in checkShardingindex";
return false;
}
if (keyPattern.nFields() == 1 && keyPattern.firstElementFieldNameStringData() == "_id") {
result.appendBool("idskip", true);
return true;
}
AutoGetCollectionForReadCommand collection(opCtx, nss);
if (!collection) {
errmsg = "ns not found";
return false;
}
auto shardKeyIdx = findShardKeyPrefixedIndex(opCtx,
*collection,
collection->getIndexCatalog(),
keyPattern,
/*requireSingleKey=*/true);
if (!shardKeyIdx) {
errmsg = "couldn't find valid index for shard key";
return false;
}
return true;
}
} cmdCheckShardingIndex;
} // namespace
} // namespace mongo
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