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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
/**
* \class storage::spi::PartitionState
* \ingroup spi
*
* \brief Information service layer needs about providers partitions.
*
* In order to be able to utilize all hardware in parallel, the service layer
* is aware of partitions, and what buckets exist in various partitions.
*
* The service layer needs information about how many partitions exist, and if
* any of them are currently unavailable. This object describes what the
* service layer need to know about disks.
*/
#pragma once
#include <persistence/spi/types.h>
namespace storage {
namespace spi {
struct PartitionState {
enum State { UP, DOWN };
PartitionState();
PartitionState(State s, vespalib::stringref reason);
State getState() const { return _state; }
const string& getReason() const { return _reason; }
bool isUp() const { return (_state == UP); }
private:
State _state;
string _reason; // If not up, there should be a reason
};
class PartitionStateList {
std::vector<PartitionState> _states;
public:
PartitionStateList(PartitionId::Type partitionCount);
~PartitionStateList();
PartitionState& operator[](PartitionId::Type index);
const PartitionState& operator[](PartitionId::Type index) const
{ return const_cast<PartitionStateList&>(*this)[index]; }
PartitionId size() const { return PartitionId(_states.size()); }
};
} // spi
} // storage
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