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// Copyright Yahoo. 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/searchcore/proton/common/monitored_refcount.h>
#include <vespa/vespalib/util/scheduledexecutor.h>
#include <mutex>
namespace vespalib {
class Timer;
class Executor;
}
namespace searchcorespi::index { struct IThreadService; }
namespace proton {
class MaintenanceJobRunner;
class DocumentDBMaintenanceConfig;
class MonitoredRefCount;
/**
* 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 DocumentDBMaintenanceConfigSP = std::shared_ptr<DocumentDBMaintenanceConfig>;
using JobList = std::vector<std::shared_ptr<MaintenanceJobRunner>>;
using UP = std::unique_ptr<MaintenanceController>;
enum class State {INITIALIZING, STARTED, PAUSED, STOPPING};
MaintenanceController(IThreadService &masterThread, vespalib::Executor & defaultExecutor, MonitoredRefCount & refCount, const DocTypeName &docTypeName);
~MaintenanceController();
void registerJobInMasterThread(IMaintenanceJob::UP job);
void registerJobInDefaultPool(IMaintenanceJob::UP job);
void killJobs();
JobList getJobList() const {
Guard guard(_jobsLock);
return _jobs;
}
void stop();
void start(const DocumentDBMaintenanceConfigSP &config);
void newConfig(const DocumentDBMaintenanceConfigSP &config);
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() { return _masterThread; }
const DocTypeName & getDocTypeName() const { return _docTypeName; }
RetainGuard retainDB() { return RetainGuard(_refCount); }
private:
using Mutex = std::mutex;
using Guard = std::lock_guard<Mutex>;
IThreadService &_masterThread;
vespalib::Executor &_defaultExecutor;
MonitoredRefCount &_refCount;
MaintenanceDocumentSubDB _readySubDB;
MaintenanceDocumentSubDB _remSubDB;
MaintenanceDocumentSubDB _notReadySubDB;
std::unique_ptr<vespalib::ScheduledExecutor> _periodicTimer;
DocumentDBMaintenanceConfigSP _config;
State _state;
const DocTypeName &_docTypeName;
JobList _jobs;
mutable Mutex _jobsLock;
void addJobsToPeriodicTimer();
void restart();
void performHoldJobs(JobList jobs);
void registerJob(vespalib::Executor & executor, IMaintenanceJob::UP job);
};
} // namespace proton
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