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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 "isearchableindexcollection.h"
#include "warmupconfig.h"
#include <vespa/searchlib/attribute/attribute_blueprint_params.h>
#include <vespa/vespalib/util/doom.h>
#include <vespa/vespalib/util/executor.h>
#include <vespa/vespalib/util/monitored_refcount.h>
#include <vespa/vespalib/util/retain_guard.h>
namespace searchcorespi {
class FieldTermMap;
class WarmupIndexCollection;
class IWarmupDone {
public:
virtual ~IWarmupDone() { }
virtual void warmupDone(std::shared_ptr<WarmupIndexCollection> current) = 0;
};
/**
* Index collection that holds a reference to the active one and a new one that
* is to be warmed up.
*/
class WarmupIndexCollection : public ISearchableIndexCollection,
public std::enable_shared_from_this<WarmupIndexCollection>
{
using WarmupConfig = index::WarmupConfig;
public:
using SP = std::shared_ptr<WarmupIndexCollection>;
WarmupIndexCollection(const WarmupConfig & warmupConfig,
ISearchableIndexCollection::SP prev,
ISearchableIndexCollection::SP next,
IndexSearchable & warmup,
vespalib::Executor & executor,
const vespalib::Clock & clock,
IWarmupDone & warmupDone);
~WarmupIndexCollection() override;
// Implements IIndexCollection
const ISourceSelector &getSourceSelector() const override;
size_t getSourceCount() const override;
IndexSearchable &getSearchable(uint32_t i) const override;
uint32_t getSourceId(uint32_t i) const override;
// Implements IndexSearchable
std::unique_ptr<search::queryeval::Blueprint>
createBlueprint(const IRequestContext & requestContext, const FieldSpec &field, const Node &term) override;
std::unique_ptr<search::queryeval::Blueprint>
createBlueprint(const IRequestContext & requestContext, const FieldSpecList &fields, const Node &term) override;
search::SearchableStats getSearchableStats() const override;
search::SerialNum getSerialNum() const override;
void accept(IndexSearchableVisitor &visitor) const override;
// Implements IFieldLengthInspector
search::index::FieldLengthInfo get_field_length_info(const vespalib::string& field_name) const override;
// Implements ISearchableIndexCollection
void append(uint32_t id, const IndexSearchable::SP &source) override;
void replace(uint32_t id, const IndexSearchable::SP &source) override;
IndexSearchable::SP getSearchableSP(uint32_t i) const override;
void setSource(uint32_t docId) override;
const ISearchableIndexCollection::SP & getNextIndexCollection() const { return _next; }
vespalib::string toString() const override;
bool doUnpack() const { return _warmupConfig.getUnpack(); }
void drainPending();
const vespalib::Clock & clock() const { return _clock; }
vespalib::steady_time warmupEndTime() const { return _warmupEndTime; }
vespalib::MonitoredRefCount & pendingTasks() { return _pendingTasks; }
private:
using Task = vespalib::Executor::Task;
void fireWarmup(Task::UP task);
bool handledBefore(uint32_t fieldId, const Node &term);
const WarmupConfig _warmupConfig;
ISearchableIndexCollection::SP _prev;
ISearchableIndexCollection::SP _next;
IndexSearchable & _warmup;
vespalib::Executor & _executor;
const vespalib::Clock & _clock;
IWarmupDone & _warmupDone;
vespalib::steady_time _warmupEndTime;
std::mutex _lock;
std::unique_ptr<FieldTermMap> _handledTerms;
vespalib::MonitoredRefCount _pendingTasks;
};
} // namespace searchcorespi
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