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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/client/read_preference.h"
#include "mongo/client/remote_command_targeter.h"
#include "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/s/client/shard.h"
#include "mongo/s/client/shard_registry.h"
#include "mongo/s/grid.h"
namespace mongo {
namespace {
class FsyncCommand : public ErrmsgCommandDeprecated {
public:
FsyncCommand() : ErrmsgCommandDeprecated("fsync") {}
std::string help() const override {
return "invoke fsync on all shards belonging to the cluster";
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool adminOnly() const override {
return true;
}
bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
Status checkAuthForOperation(OperationContext* opCtx,
const DatabaseName&,
const BSONObj&) const override {
auto* as = AuthorizationSession::get(opCtx->getClient());
if (!as->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::fsync)) {
return {ErrorCodes::Unauthorized, "unauthorized"};
}
return Status::OK();
}
bool errmsgRun(OperationContext* opCtx,
const std::string& dbname,
const BSONObj& cmdObj,
std::string& errmsg,
BSONObjBuilder& result) override {
if (cmdObj["lock"].trueValue()) {
errmsg = "can't do lock through mongos";
return false;
}
BSONObjBuilder sub;
bool ok = true;
auto const shardRegistry = Grid::get(opCtx)->shardRegistry();
const auto shardIds = shardRegistry->getAllShardIds(opCtx);
for (const ShardId& shardId : shardIds) {
auto shardStatus = shardRegistry->getShard(opCtx, shardId);
if (!shardStatus.isOK()) {
continue;
}
const auto s = std::move(shardStatus.getValue());
auto response = uassertStatusOK(s->runCommandWithFixedRetryAttempts(
opCtx,
ReadPreferenceSetting{ReadPreference::PrimaryOnly},
"admin",
BSON("fsync" << 1),
Shard::RetryPolicy::kIdempotent));
uassertStatusOK(response.commandStatus);
BSONObj x = std::move(response.response);
sub.append(s->getId().toString(), x);
if (!x["ok"].trueValue()) {
ok = false;
errmsg = x["errmsg"].String();
}
}
// This field has had dummy value since MMAP went away. It is undocumented.
// Maintaining it so as not to cause unnecessary user pain across upgrades.
result.append("numFiles", 1);
result.append("all", sub.obj());
return ok;
}
} clusterFsyncCmd;
} // namespace
} // namespace mongo
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