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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.
*/
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kSharding
#include "mongo/platform/basic.h"
#include "mongo/db/commands.h"
#include "mongo/logv2/log.h"
#include "mongo/s/grid.h"
#include "mongo/s/is_mongos.h"
namespace mongo {
namespace {
class FlushRouterConfigCmd : public BasicCommand {
public:
FlushRouterConfigCmd() : BasicCommand("flushRouterConfig", "flushrouterconfig") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool adminOnly() const override {
return true;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
std::string help() const override {
return "Flushes the cached routing information for a single collection, entire database "
"(and its collections) or all databases, which would cause full reload from the "
"config server on the next access.\n"
"Usage:\n"
"{flushRouterConfig: 1} flushes all databases\n"
"{flushRouterConfig: 'db'} flushes only the given database (and its collections)\n"
"{flushRouterconfig: 'db.coll'} flushes only the given collection";
}
void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) const override {
ActionSet actions;
actions.addAction(ActionType::flushRouterConfig);
out->push_back(Privilege(ResourcePattern::forClusterResource(), actions));
}
bool run(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) override {
auto const grid = Grid::get(opCtx);
uassert(ErrorCodes::ShardingStateNotInitialized,
"Sharding is not enabled",
grid->isShardingInitialized());
auto const catalogCache = grid->catalogCache();
const auto argumentElem = cmdObj.firstElement();
if (argumentElem.isNumber() || argumentElem.isBoolean()) {
LOGV2(22761, "Routing metadata flushed for all databases");
catalogCache->purgeAllDatabases();
} else {
const auto ns = argumentElem.checkAndGetStringData();
if (nsIsDbOnly(ns)) {
LOGV2(22762,
"Routing metadata flushed for database {db}",
"Routing metadata flushed for database",
"db"_attr = ns);
catalogCache->purgeDatabase(ns);
} else {
const NamespaceString nss(ns);
LOGV2(22763,
"Routing metadata flushed for collection {namespace}",
"Routing metadata flushed for collection",
"namespace"_attr = nss);
catalogCache->invalidateCollectionEntry_LINEARIZABLE(nss);
}
}
result.appendBool("flushed", true);
return true;
}
} flushRouterConfigCmd;
} // namespace
} // namespace mongo
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