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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "maintenancedocumentsubdb.h"
#include "i_maintenance_job.h"
#include <vespa/searchcore/proton/common/doctypename.h>
#include <vespa/vespalib/util/retain_guard.h>
#include <mutex>
class FNET_Transport;
namespace vespalib {
class Executor;
class MonitoredRefCount;
class Timer;
}
namespace searchcorespi::index {
struct IThreadService;
struct ISyncableThreadService;
}
namespace proton {
class MaintenanceJobRunner;
class IScheduledExecutor;
/**
* Class that controls the bucket moving between ready and notready sub databases
* and a set of maintenance jobs for a document db.
* The maintenance jobs are independent of the controller.
*/
class MaintenanceController
{
public:
using IThreadService = searchcorespi::index::IThreadService;
using ISyncableThreadService = searchcorespi::index::ISyncableThreadService;
using JobList = std::vector<std::shared_ptr<MaintenanceJobRunner>>;
using UP = std::unique_ptr<MaintenanceController>;
enum class State {INITIALIZING, STARTED, PAUSED, STOPPING};
MaintenanceController(FNET_Transport & transport, ISyncableThreadService& masterThread,
vespalib::MonitoredRefCount& refCount, const DocTypeName& docTypeName);
~MaintenanceController();
void registerJob(IMaintenanceJob::UP job);
void killJobs();
JobList getJobList() const {
Guard guard(_jobsLock);
return _jobs;
}
void stop();
void start();
void newConfig();
void updateMetrics(DocumentDBTaggedMetrics & metrics);
void
syncSubDBs(const MaintenanceDocumentSubDB &readySubDB,
const MaintenanceDocumentSubDB &remSubdB,
const MaintenanceDocumentSubDB ¬ReadySubDB);
void kill();
bool getStarted() const { return _state >= State::STARTED; }
bool getStopping() const { return _state == State::STOPPING; }
bool getPaused() const { return _state == State::PAUSED; }
const MaintenanceDocumentSubDB & getReadySubDB() const { return _readySubDB; }
const MaintenanceDocumentSubDB & getRemSubDB() const { return _remSubDB; }
const MaintenanceDocumentSubDB & getNotReadySubDB() const { return _notReadySubDB; }
IThreadService & masterThread();
const DocTypeName & getDocTypeName() const { return _docTypeName; }
vespalib::RetainGuard retainDB() { return vespalib::RetainGuard(_refCount); }
private:
using Mutex = std::mutex;
using Guard = std::lock_guard<Mutex>;
using TaskHandle = std::unique_ptr<vespalib::IDestructorCallback>;
ISyncableThreadService &_masterThread;
vespalib::MonitoredRefCount &_refCount;
MaintenanceDocumentSubDB _readySubDB;
MaintenanceDocumentSubDB _remSubDB;
MaintenanceDocumentSubDB _notReadySubDB;
std::unique_ptr<IScheduledExecutor> _periodicTimer;
std::vector<TaskHandle> _periodicTaskHandles;
State _state;
const DocTypeName &_docTypeName;
JobList _jobs;
mutable Mutex _jobsLock;
void addJobsToPeriodicTimer();
void restart();
void performHoldJobs(JobList jobs);
};
} // namespace proton
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