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/**
* Copyright (C) 2018 MongoDB 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/commands.h"
#include "mongo/s/commands/cluster_commands_helpers.h"
namespace mongo {
/**
* Forwards the testing-only restartCatalog command to all shards.
*/
class ClusterRestartCatalogCmd final : public BasicCommand {
public:
ClusterRestartCatalogCmd() : BasicCommand("restartCatalog") {}
Status checkAuthForOperation(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj) final {
// No auth checks as this is a testing-only command.
return Status::OK();
}
bool adminOnly() const final {
return true;
}
bool maintenanceMode() const final {
return true;
}
bool maintenanceOk() const final {
return false;
}
bool slaveOk() const final {
return true;
}
bool supportsWriteConcern(const BSONObj& cmd) const final {
return false;
}
std::string help() const final {
return "restart catalog\n"
"Internal command for testing only. Forwards the restartCatalog command to\n"
"all shards.\n";
}
bool run(OperationContext* opCtx,
const std::string& db,
const BSONObj& cmdObj,
BSONObjBuilder& result) final {
// This command doesn't operate on a collection namespace, so just pass in an empty
// NamespaceString.
const auto namespaceStringForCommand = boost::none;
auto shardResponses = scatterGatherUnversionedTargetAllShards(
opCtx,
db,
namespaceStringForCommand,
CommandHelpers::filterCommandRequestForPassthrough(cmdObj),
ReadPreferenceSetting::get(opCtx),
Shard::RetryPolicy::kIdempotent);
std::string errmsg;
appendRawResponses(opCtx, &errmsg, &result, shardResponses);
// Intentionally not adding the error message to 'result', as it will already contain all
// the errors from the shards in a field named 'raw'.
return errmsg.length() > 0 ? false : true;
}
};
MONGO_INITIALIZER(RegisterClusterRestartCatalogCommand)(InitializerContext* ctx) {
if (Command::testCommandsEnabled) {
// Leaked intentionally: a Command registers itself when constructed.
new ClusterRestartCatalogCmd();
}
return Status::OK();
}
} // namespace mongo
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