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This API adds a little bit of overhead but, in exchange: - Offers a path to migrate to the new Value API. - Offers a path to provide compression while falling back to the previous format. - Offers a path to backends batching requests without consuming a worker thread. - Avoids copying the value multiple times during async puts. #rb Zousar.Shaker #rnx #preflight 61e0a32fed50181feb57c5d6 #ROBOMERGE-AUTHOR: devin.doucette #ROBOMERGE-SOURCE: CL 18607028 in //UE5/Release-5.0/... via CL 18607056 via CL 18607101 #ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v899-18417669) [CL 18607126 by devin doucette in ue5-main branch]
113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "DerivedDataCache.h"
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namespace UE::DerivedData { class FLegacyCacheKey; }
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namespace UE::DerivedData { struct FLegacyCacheDeleteRequest; }
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namespace UE::DerivedData { struct FLegacyCacheDeleteResponse; }
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namespace UE::DerivedData { struct FLegacyCacheGetRequest; }
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namespace UE::DerivedData { struct FLegacyCacheGetResponse; }
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namespace UE::DerivedData { struct FLegacyCachePutRequest; }
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namespace UE::DerivedData { struct FLegacyCachePutResponse; }
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namespace UE::DerivedData
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{
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using FOnLegacyCachePutComplete = TUniqueFunction<void (FLegacyCachePutResponse&& Response)>;
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using FOnLegacyCacheGetComplete = TUniqueFunction<void (FLegacyCacheGetResponse&& Response)>;
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using FOnLegacyCacheDeleteComplete = TUniqueFunction<void (FLegacyCacheDeleteResponse&& Response)>;
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class ILegacyCacheStore : public ICacheStore
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{
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public:
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virtual void LegacyPut(
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TConstArrayView<FLegacyCachePutRequest> Requests,
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IRequestOwner& Owner,
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FOnLegacyCachePutComplete&& OnComplete) = 0;
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virtual void LegacyGet(
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TConstArrayView<FLegacyCacheGetRequest> Requests,
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IRequestOwner& Owner,
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FOnLegacyCacheGetComplete&& OnComplete) = 0;
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virtual void LegacyDelete(
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TConstArrayView<FLegacyCacheDeleteRequest> Requests,
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IRequestOwner& Owner,
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FOnLegacyCacheDeleteComplete&& OnComplete) = 0;
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};
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class FLegacyCacheKey
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{
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public:
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FLegacyCacheKey() = default;
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FLegacyCacheKey(FStringView FullKey, int32 MaxKeyLength);
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const FCacheKey& GetKey() const { return Key; }
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const FSharedString& GetFullKey() const { return FullKey; }
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const FSharedString& GetShortKey() const { return ShortKey.IsEmpty() ? FullKey : ShortKey; }
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bool HasShortKey() const { return !ShortKey.IsEmpty(); }
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bool ReadValueTrailer(FCompositeBuffer& Value) const;
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void WriteValueTrailer(FCompositeBuffer& Value) const;
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private:
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FCacheKey Key;
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FSharedString FullKey;
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FSharedString ShortKey;
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};
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struct FLegacyCachePutRequest
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{
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FSharedString Name;
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FLegacyCacheKey Key;
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FCompositeBuffer Value;
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ECachePolicy Policy = ECachePolicy::Default;
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uint64 UserData = 0;
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};
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struct FLegacyCachePutResponse
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{
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FSharedString Name;
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FLegacyCacheKey Key;
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uint64 UserData = 0;
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EStatus Status = EStatus::Error;
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};
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struct FLegacyCacheGetRequest
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{
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FSharedString Name;
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FLegacyCacheKey Key;
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ECachePolicy Policy = ECachePolicy::Default;
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uint64 UserData = 0;
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};
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struct FLegacyCacheGetResponse
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{
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FSharedString Name;
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FLegacyCacheKey Key;
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FSharedBuffer Value;
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uint64 UserData = 0;
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EStatus Status = EStatus::Error;
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};
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struct FLegacyCacheDeleteRequest
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{
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FSharedString Name;
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FLegacyCacheKey Key;
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ECachePolicy Policy = ECachePolicy::Default;
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bool bTransient = false;
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uint64 UserData = 0;
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};
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struct FLegacyCacheDeleteResponse
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{
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FSharedString Name;
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FLegacyCacheKey Key;
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uint64 UserData = 0;
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EStatus Status = EStatus::Error;
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};
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} // UE::DerivedData
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