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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "summaryflushtarget.h"
#include <vespa/vespalib/util/lambdatask.h>
using search::IDocumentStore;
using search::SerialNum;
using searchcorespi::FlushStats;
using searchcorespi::IFlushTarget;
namespace proton {
namespace {
class Flusher : public searchcorespi::FlushTask {
private:
IDocumentStore & _docStore;
FlushStats & _stats;
SerialNum _currSerial;
public:
Flusher(IDocumentStore & docStore,
FlushStats & stats,
SerialNum currSerial)
: _docStore(docStore),
_stats(stats),
_currSerial(currSerial)
{
_currSerial = _docStore.initFlush(currSerial);
}
void run() override {
_docStore.flush(_currSerial);
updateStats();
}
void updateStats() {
// the target must live until this task is done (handled by flush engine).
_stats.setPath(_docStore.getBaseDir());
}
SerialNum getFlushSerial() const override { return _currSerial; }
};
}
SummaryFlushTarget::SummaryFlushTarget(IDocumentStore & docStore,
vespalib::Executor & summaryService)
: LeafFlushTarget("summary.flush", Type::SYNC, Component::DOCUMENT_STORE),
_docStore(docStore),
_summaryService(summaryService),
_lastStats()
{
_lastStats.setPathElementsToLog(6);
}
IFlushTarget::MemoryGain
SummaryFlushTarget::getApproxMemoryGain() const
{
return MemoryGain(_docStore.memoryUsed(), _docStore.memoryMeta());
}
IFlushTarget::Time
SummaryFlushTarget::getLastFlushTime() const
{
return _docStore.getLastFlushTime();
}
SerialNum
SummaryFlushTarget::getFlushedSerialNum() const
{
return _docStore.lastSyncToken();
}
IFlushTarget::Task::UP
SummaryFlushTarget::internalInitFlush(SerialNum currentSerial) {
return std::make_unique<Flusher>(_docStore, _lastStats, currentSerial);
}
IFlushTarget::Task::UP
SummaryFlushTarget::initFlush(SerialNum currentSerial, std::shared_ptr<search::IFlushToken>)
{
// Called by document db executor
std::promise<Task::UP> promise;
std::future<Task::UP> future = promise.get_future();
_summaryService.execute(vespalib::makeLambdaTask(
[&]() { promise.set_value(
internalInitFlush(currentSerial));
}));
return future.get();
}
} // namespace proton
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