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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 "i_blockable_maintenance_job.h"
#include "i_move_operation_limiter.h"
#include <mutex>
#include <unordered_set>
namespace proton {
class BlockableMaintenanceJobConfig;
class DiskMemUsageState;
class IMaintenanceJobRunner;
struct IMoveOperationLimiter;
/**
* Implementation of a maintenance job that can be blocked and unblocked due to various external reasons.
* A blocked job is not executed by the IMaintenanceJobRunner wrapping the job.
* When unblocked for a given reason, the job is scheduled for execution again if it is totally unblocked.
*/
class BlockableMaintenanceJob : public IBlockableMaintenanceJob {
private:
using LockGuard = std::lock_guard<std::mutex>;
using ReasonSet = std::unordered_set<BlockedReason>;
mutable std::mutex _mutex;
ReasonSet _blockReasons;
bool _blocked;
IMaintenanceJobRunner *_runner;
double _resourceLimitFactor;
std::shared_ptr<IMoveOperationLimiter> _moveOpsLimiter;
void updateBlocked(const LockGuard &guard);
protected:
void internalNotifyDiskMemUsage(const DiskMemUsageState &state);
public:
BlockableMaintenanceJob(const vespalib::string &name,
vespalib::duration delay,
vespalib::duration interval);
BlockableMaintenanceJob(const vespalib::string &name,
vespalib::duration delay,
vespalib::duration interval,
const BlockableMaintenanceJobConfig &config);
~BlockableMaintenanceJob() override;
bool isBlocked(BlockedReason reason);
void considerRun();
void onStop() override;
void setBlocked(BlockedReason reason) override;
void unBlock(BlockedReason reason) override;
bool isBlocked() const override;
void registerRunner(IMaintenanceJobRunner *runner) override { _runner = runner; }
IMoveOperationLimiter & getLimiter() { return *_moveOpsLimiter; }
const IMoveOperationLimiter & getLimiter() const { return *_moveOpsLimiter; }
};
}
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