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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/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/commands/feature_compatibility_version_command_parser.h"
#include "mongo/db/commands/feature_compatibility_version_documentation.h"
#include "mongo/db/commands/feature_compatibility_version_parser.h"
#include "mongo/s/client/shard.h"
#include "mongo/s/client/shard_registry.h"
#include "mongo/s/grid.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
namespace {
/**
* Sets the minimum allowed version for the cluster. If it is the last stable
* featureCompatibilityVersion, then shards will not use latest featureCompatibilityVersion
* features.
*
* Format:
* {
* setFeatureCompatibilityVersion: <string version>
* }
*/
class SetFeatureCompatibilityVersionCmd : public BasicCommand {
public:
SetFeatureCompatibilityVersionCmd() : BasicCommand("setFeatureCompatibilityVersion") {}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
virtual bool adminOnly() const {
return true;
}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return true;
}
std::string help() const override {
return str::stream()
<< "Set the API version for the cluster. If set to \""
<< FeatureCompatibilityVersionParser::kVersion40
<< "\", then 4.2 features are disabled. If \""
<< FeatureCompatibilityVersionParser::kVersion42
<< "\", then 4.2 features are enabled, and all nodes in the cluster must be version "
<< "4.2. See " << feature_compatibility_version_documentation::kCompatibilityLink
<< ".";
}
Status checkAuthForCommand(Client* client,
const std::string& dbname,
const BSONObj& cmdObj) const override {
if (!AuthorizationSession::get(client)->isAuthorizedForActionsOnResource(
ResourcePattern::forClusterResource(),
ActionType::setFeatureCompatibilityVersion)) {
return Status(ErrorCodes::Unauthorized, "Unauthorized");
}
return Status::OK();
}
bool run(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
BSONObjBuilder& result) {
const auto version = uassertStatusOK(
FeatureCompatibilityVersionCommandParser::extractVersionFromCommand(getName(), cmdObj));
// Forward to config shard, which will forward to all shards.
auto configShard = Grid::get(opCtx)->shardRegistry()->getConfigShard();
auto response = uassertStatusOK(configShard->runCommandWithFixedRetryAttempts(
opCtx,
ReadPreferenceSetting{ReadPreference::PrimaryOnly},
dbname,
CommandHelpers::appendMajorityWriteConcern(CommandHelpers::appendPassthroughFields(
cmdObj, BSON("setFeatureCompatibilityVersion" << version))),
Shard::RetryPolicy::kIdempotent));
uassertStatusOK(response.commandStatus);
return true;
}
} clusterSetFeatureCompatibilityVersionCmd;
} // namespace
} // namespace mongo
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