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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 <vespa/searchcore/proton/flushengine/iflushstrategy.h>
#include <vespa/vespalib/util/time.h>
#include <mutex>
namespace proton {
class MemoryFlush : public IFlushStrategy
{
public:
struct Config
{
/// Global maxMemory
uint64_t maxGlobalMemory;
/// Maximum global tls size.
uint64_t maxGlobalTlsSize;
/// Maximum global disk bloat factor. When this limit is reached
/// flush is forced.
double globalDiskBloatFactor;
/// Maximum memory saved. When this limit is reached flush is forced.
int64_t maxMemoryGain;
/// Maximum disk bloat factor. When this limit is reached
/// flush is forced.
double diskBloatFactor;
/// Maximum age of unflushed data.
vespalib::duration maxTimeGain;
Config();
Config(uint64_t maxGlobalMemory_in,
uint64_t maxGlobalTlsSize_in,
double globalDiskBloatFactor_in,
uint64_t maxMemoryGain_in,
double diskBloatFactor_in,
vespalib::duration maxTimeGain_in);
bool operator == (const Config & rhs) const { return equal(rhs); }
bool operator != (const Config & rhs) const { return ! equal(rhs); }
bool equal(const Config & rhs) const {
return (maxGlobalMemory == rhs.maxGlobalMemory) &&
(maxGlobalTlsSize == rhs.maxGlobalTlsSize) &&
(globalDiskBloatFactor == rhs.globalDiskBloatFactor) &&
(maxMemoryGain == rhs.maxMemoryGain) &&
(maxTimeGain == rhs.maxTimeGain) &&
(diskBloatFactor == rhs. diskBloatFactor);
}
vespalib::string toString() const;
};
enum OrderType { DEFAULT, MAXAGE, DISKBLOAT, TLSSIZE, MEMORY };
private:
/// Needed as flushDone is called in different context from the rest
mutable std::mutex _lock;
Config _config;
/// The time when the strategy was started.
vespalib::system_time _startTime;
class CompareTarget
{
public:
CompareTarget(OrderType order, const flushengine::TlsStatsMap &tlsStatsMap)
: _order(order),
_tlsStatsMap(tlsStatsMap)
{ }
bool operator ()(const FlushContext::SP &lfc, const FlushContext::SP &rfc) const;
private:
OrderType _order;
const flushengine::TlsStatsMap &_tlsStatsMap;
};
public:
using SP = std::shared_ptr<MemoryFlush>;
MemoryFlush();
explicit MemoryFlush(const Config &config) : MemoryFlush(config, vespalib::system_clock::now()) { }
MemoryFlush(const Config &config, vespalib::system_time startTime);
~MemoryFlush();
FlushContext::List
getFlushTargets(const FlushContext::List &targetList,
const flushengine::TlsStatsMap &tlsStatsMap,
const flushengine::ActiveFlushStats& active_flushes) const override;
void setConfig(const Config &config);
Config getConfig() const;
};
} // namespace proton
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