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/**
* Copyright (C) 2022-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/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/concurrency/d_concurrency.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/s/active_migrations_registry.h"
#include "mongo/db/s/sharding_state.h"
#include "mongo/s/request_types/shardsvr_join_migrations_request_gen.h"
namespace mongo {
namespace {
class ShardsvrJoinMigrationsCommand final : public TypedCommand<ShardsvrJoinMigrationsCommand> {
public:
using Request = ShardsvrJoinMigrations;
bool skipApiVersionCheck() const override {
// Internal command (config -> shard).
return true;
}
std::string help() const override {
return "Internal command invoked by the config server to join any chunk migration activity "
"executed by the shard";
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kNever;
}
bool adminOnly() const override {
return true;
}
class Invocation final : public InvocationBase {
public:
using InvocationBase::InvocationBase;
void typedRun(OperationContext* opCtx) {
uassertStatusOK(ShardingState::get(opCtx)->canAcceptShardedCommands());
opCtx->setAlwaysInterruptAtStepDownOrUp();
{
Lock::GlobalLock lk(opCtx, MODE_IX);
uassert(ErrorCodes::InterruptedDueToReplStateChange,
"Not primary while trying to join chunk migration",
repl::ReplicationCoordinator::get(opCtx)->getMemberState().primary());
}
auto& activeMigrationRegistry = ActiveMigrationsRegistry::get(opCtx);
activeMigrationRegistry.lock(opCtx, kRegistryLockReason);
activeMigrationRegistry.unlock(kRegistryLockReason);
}
private:
static constexpr char kRegistryLockReason[] = "Running _shardsvrJoinMigrations";
NamespaceString ns() const override {
return {request().getDbName(), ""};
}
bool supportsWriteConcern() const override {
return false;
}
void doCheckAuthorization(OperationContext* opCtx) const override {
uassert(ErrorCodes::Unauthorized,
"Unauthorized",
AuthorizationSession::get(opCtx->getClient())
->isAuthorizedForActionsOnResource(ResourcePattern::forClusterResource(),
ActionType::internal));
}
};
} _shardsvrJoinMigrationsCmd;
} // namespace
} // namespace mongo
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