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1bbb384300
#preflight 62967fd60c151996e13038ec #rb Zousar.Shaker [CL 20445538 by Devin Doucette in ue5-main branch]
1016 lines
35 KiB
C++
1016 lines
35 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "ZenServerInterface.h"
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#if UE_WITH_ZEN
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#include "BatchView.h"
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#include "DerivedDataBackendInterface.h"
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#include "DerivedDataCachePrivate.h"
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#include "DerivedDataCacheRecord.h"
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#include "DerivedDataCacheUsageStats.h"
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#include "DerivedDataChunk.h"
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#include "DerivedDataLegacyCacheStore.h"
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#include "Http/HttpClient.h"
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#include "Misc/App.h"
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#include "Misc/ConfigCacheIni.h"
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#include "Misc/Optional.h"
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#include "ProfilingDebugging/CountersTrace.h"
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#include "ProfilingDebugging/CpuProfilerTrace.h"
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#include "Serialization/CompactBinary.h"
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#include "Serialization/CompactBinaryPackage.h"
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#include "Serialization/CompactBinarySerialization.h"
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#include "Serialization/CompactBinaryValidation.h"
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#include "Serialization/CompactBinaryWriter.h"
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#include "Serialization/LargeMemoryReader.h"
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#include "Serialization/LargeMemoryWriter.h"
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#include "Templates/Function.h"
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#include "ZenBackendUtils.h"
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#include "ZenSerialization.h"
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#include "ZenStatistics.h"
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TRACE_DECLARE_INT_COUNTER(ZenDDC_Get, TEXT("ZenDDC Get"));
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TRACE_DECLARE_INT_COUNTER(ZenDDC_GetHit, TEXT("ZenDDC Get Hit"));
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TRACE_DECLARE_INT_COUNTER(ZenDDC_Put, TEXT("ZenDDC Put"));
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TRACE_DECLARE_INT_COUNTER(ZenDDC_PutHit, TEXT("ZenDDC Put Hit"));
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TRACE_DECLARE_INT_COUNTER(ZenDDC_BytesReceived, TEXT("ZenDDC Bytes Received"));
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TRACE_DECLARE_INT_COUNTER(ZenDDC_BytesSent, TEXT("ZenDDC Bytes Sent"));
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TRACE_DECLARE_INT_COUNTER(ZenDDC_CacheRecordRequestCount, TEXT("ZenDDC CacheRecord Request Count"));
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TRACE_DECLARE_INT_COUNTER(ZenDDC_ChunkRequestCount, TEXT("ZenDDC Chunk Request Count"));
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namespace UE::DerivedData
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{
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template<typename T>
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void ForEachBatch(const int32 BatchSize, const int32 TotalCount, T&& Fn)
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{
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check(BatchSize > 0);
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if (TotalCount > 0)
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{
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const int32 BatchCount = FMath::DivideAndRoundUp(TotalCount, BatchSize);
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const int32 Last = TotalCount - 1;
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for (int32 BatchIndex = 0; BatchIndex < BatchCount; BatchIndex++)
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{
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const int32 BatchFirstIndex = BatchIndex * BatchSize;
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const int32 BatchLastIndex = FMath::Min(BatchFirstIndex + BatchSize - 1, Last);
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Fn(BatchFirstIndex, BatchLastIndex);
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}
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}
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}
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//----------------------------------------------------------------------------------------------------------
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// FZenCacheStore
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//----------------------------------------------------------------------------------------------------------
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/**
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* Backend for a HTTP based caching service (Zen)
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*/
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class FZenCacheStore final : public ILegacyCacheStore
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{
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public:
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/**
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* Creates the cache store client, checks health status and attempts to acquire an access token.
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*
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* @param ServiceUrl Base url to the service including schema.
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* @param Namespace Namespace to use.
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*/
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FZenCacheStore(const TCHAR* ServiceUrl, const TCHAR* Namespace, const TCHAR* StructuredNamespace);
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inline FString GetName() const { return ZenService.GetInstance().GetURL(); }
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/**
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* Checks if cache service is usable (reachable and accessible).
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* @return true if usable
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*/
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inline bool IsUsable() const { return bIsUsable; }
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// ICacheStore
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void Put(
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TConstArrayView<FCachePutRequest> Requests,
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IRequestOwner& Owner,
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FOnCachePutComplete&& OnComplete = FOnCachePutComplete()) final;
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void Get(
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TConstArrayView<FCacheGetRequest> Requests,
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IRequestOwner& Owner,
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FOnCacheGetComplete&& OnComplete) final;
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void PutValue(
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TConstArrayView<FCachePutValueRequest> Requests,
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IRequestOwner& Owner,
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FOnCachePutValueComplete&& OnComplete = FOnCachePutValueComplete()) final;
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void GetValue(
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TConstArrayView<FCacheGetValueRequest> Requests,
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IRequestOwner& Owner,
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FOnCacheGetValueComplete&& OnComplete = FOnCacheGetValueComplete()) final;
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void GetChunks(
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TConstArrayView<FCacheGetChunkRequest> Requests,
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IRequestOwner& Owner,
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FOnCacheGetChunkComplete&& OnComplete) final;
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// ILegacyCacheStore
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void LegacyStats(FDerivedDataCacheStatsNode& OutNode) final;
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bool LegacyDebugOptions(FBackendDebugOptions& Options) final;
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private:
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bool IsServiceReady();
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using FOnRpcComplete = TUniqueFunction<void(FHttpRequest::EResult HttpResult, FHttpRequest* Request, FCbPackage& OutResponse)>;
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static FHttpRequest::EResult ParseRpcResponse(FHttpRequest::EResult ResultFromPost, FHttpRequest& Request, FCbPackage& OutResponse);
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static FHttpRequest::EResult PerformBlockingRpc(FHttpRequest& Request,
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FStringView Uri,
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FCbObject RequestObject,
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FCbPackage &OutResponse);
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static FHttpRequest::EResult PerformBlockingRpc(FHttpRequest& Request,
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FStringView Uri,
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const FCbPackage& RequestPackage,
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FCbPackage& OutResponse);
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static void EnqueueAsyncRpc(FHttpRequest& Request,
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UE::DerivedData::IRequestOwner& Owner,
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FHttpRequestPool* Pool,
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FStringView Uri,
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FCbObject RequestObject,
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FOnRpcComplete&& OnComplete);
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static void EnqueueAsyncRpc(FHttpRequest& Request,
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UE::DerivedData::IRequestOwner& Owner,
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FHttpRequestPool* Pool,
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FStringView Uri,
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const FCbPackage& RequestPackage,
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FOnRpcComplete&& OnComplete);
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private:
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FString Namespace;
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FString StructuredNamespace;
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UE::Zen::FScopeZenService ZenService;
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mutable FDerivedDataCacheUsageStats UsageStats;
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TUniquePtr<FHttpRequestPool> RequestPool;
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bool bIsUsable = false;
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int32 BatchPutMaxBytes = 1024*1024;
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int32 CacheRecordBatchSize = 8;
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int32 CacheChunksBatchSize = 8;
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/** Debug Options */
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FBackendDebugOptions DebugOptions;
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};
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FZenCacheStore::FZenCacheStore(
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const TCHAR* InServiceUrl,
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const TCHAR* InNamespace,
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const TCHAR* InStructuredNamespace)
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: Namespace(InNamespace)
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, StructuredNamespace(InStructuredNamespace)
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, ZenService(InServiceUrl)
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{
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if (IsServiceReady())
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{
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RequestPool = MakeUnique<FHttpRequestPool>(ZenService.GetInstance().GetURL(), ZenService.GetInstance().GetURL(), nullptr, nullptr, 32);
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bIsUsable = true;
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// Issue a request for stats as it will be fetched asynchronously and issuing now makes them available sooner for future callers.
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Zen::FZenStats ZenStats;
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ZenService.GetInstance().GetStats(ZenStats);
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}
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GConfig->GetInt(TEXT("Zen"), TEXT("BatchPutMaxBytes"), BatchPutMaxBytes, GEngineIni);
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GConfig->GetInt(TEXT("Zen"), TEXT("CacheRecordBatchSize"), CacheRecordBatchSize, GEngineIni);
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GConfig->GetInt(TEXT("Zen"), TEXT("CacheChunksBatchSize"), CacheChunksBatchSize, GEngineIni);
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}
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bool FZenCacheStore::IsServiceReady()
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{
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return ZenService.GetInstance().IsServiceReady();
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}
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FHttpRequest::EResult FZenCacheStore::ParseRpcResponse(FHttpRequest::EResult ResultFromPost, FHttpRequest& Request, FCbPackage& OutResponse)
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{
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if (ResultFromPost != FHttpRequest::EResult::Success || !FHttpRequest::IsSuccessResponse(Request.GetResponseCode()))
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{
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return FHttpRequest::EResult::Failed;
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}
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const TArray64<uint8>& ResponseBuffer = Request.GetResponseBuffer();
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if (ResponseBuffer.Num())
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{
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FLargeMemoryReader Ar(ResponseBuffer.GetData(), ResponseBuffer.Num());
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if (!OutResponse.TryLoad(Ar))
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{
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return FHttpRequest::EResult::Failed;
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}
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}
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return FHttpRequest::EResult::Success;
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}
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FHttpRequest::EResult FZenCacheStore::PerformBlockingRpc(FHttpRequest& Request,
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FStringView Uri,
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FCbObject RequestObject,
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FCbPackage& OutResponse)
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{
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return ParseRpcResponse(
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Request.PerformBlockingPost(Uri, RequestObject.GetBuffer(), EHttpContentType::CbObject, EHttpContentType::CbPackage), Request, OutResponse);
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}
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FHttpRequest::EResult FZenCacheStore::PerformBlockingRpc(FHttpRequest& Request,
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FStringView Uri,
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const FCbPackage& RequestPackage,
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FCbPackage& OutResponse)
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{
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FLargeMemoryWriter PackageMemory;
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UE::Zen::Http::SaveCbPackage(RequestPackage, PackageMemory);
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return ParseRpcResponse(
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Request.PerformBlockingPost(Uri, FCompositeBuffer(FSharedBuffer::MakeView(PackageMemory.GetView())), EHttpContentType::CbPackage, EHttpContentType::CbPackage), Request, OutResponse);
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}
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void FZenCacheStore::EnqueueAsyncRpc(FHttpRequest& Request,
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UE::DerivedData::IRequestOwner& Owner,
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FHttpRequestPool* Pool,
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FStringView Uri,
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FCbObject RequestObject,
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FOnRpcComplete&& OnComplete)
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{
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auto OnHttpRequestComplete = [OnComplete = MoveTemp(OnComplete)]
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(FHttpRequest::EResult HttpResult, FHttpRequest* Request)
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{
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FCbPackage Response;
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FHttpRequest::EResult ParsedResponseResult = ParseRpcResponse(HttpResult, *Request, Response);
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OnComplete(ParsedResponseResult, Request, Response);
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return FHttpRequest::ECompletionBehavior::Done;
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};
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Request.EnqueueAsyncPost(Owner, Pool, Uri, RequestObject.GetBuffer(), MoveTemp(OnHttpRequestComplete), EHttpContentType::CbObject, EHttpContentType::CbPackage);
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}
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void FZenCacheStore::EnqueueAsyncRpc(FHttpRequest& Request,
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UE::DerivedData::IRequestOwner& Owner,
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FHttpRequestPool* Pool,
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FStringView Uri,
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const FCbPackage& RequestPackage,
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FOnRpcComplete&& OnComplete)
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{
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auto OnHttpRequestComplete = [OnComplete = MoveTemp(OnComplete)]
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(FHttpRequest::EResult HttpResult, FHttpRequest* Request)
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{
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FCbPackage Response;
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FHttpRequest::EResult ParsedResponseResult = ParseRpcResponse(HttpResult, *Request, Response);
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OnComplete(ParsedResponseResult, Request, Response);
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return FHttpRequest::ECompletionBehavior::Done;
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};
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FLargeMemoryWriter PackageMemory;
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UE::Zen::Http::SaveCbPackage(RequestPackage, PackageMemory);
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uint64 PackageMemorySize = PackageMemory.TotalSize();
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FSharedBuffer PackageSharedBuffer = FSharedBuffer::TakeOwnership(PackageMemory.ReleaseOwnership(), PackageMemorySize, FMemory::Free);
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Request.EnqueueAsyncPost(Owner, Pool, Uri, FCompositeBuffer(PackageSharedBuffer), MoveTemp(OnHttpRequestComplete), EHttpContentType::CbPackage, EHttpContentType::CbPackage);
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}
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void FZenCacheStore::LegacyStats(FDerivedDataCacheStatsNode& OutNode)
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{
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Zen::FZenStats ZenStats;
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FDerivedDataCacheUsageStats LocalStats;
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FDerivedDataCacheUsageStats RemoteStats;
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#if ENABLE_COOK_STATS
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using EHitOrMiss = FCookStats::CallStats::EHitOrMiss;
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using ECacheStatType = FCookStats::CallStats::EStatType;
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Zen::GetDefaultServiceInstance().GetStats(ZenStats);
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const int64 RemotePutSize = int64(ZenStats.UpstreamStats.TotalUploadedMB * 1024 * 1024);
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const int64 RemoteGetSize = int64(ZenStats.UpstreamStats.TotalDownloadedMB * 1024 * 1024);
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const int64 LocalGetSize = FMath::Max<int64>(0, UsageStats.GetStats.GetAccumulatedValueAnyThread(EHitOrMiss::Hit, ECacheStatType::Bytes) - RemoteGetSize);
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LocalStats.PutStats = UsageStats.PutStats;
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LocalStats.ExistsStats = UsageStats.ExistsStats;
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LocalStats.PrefetchStats = UsageStats.PrefetchStats;
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LocalStats.GetStats.Accumulate(EHitOrMiss::Hit, ECacheStatType::Counter, ZenStats.CacheStats.Hits - ZenStats.CacheStats.UpstreamHits, /*bIsInGameThread*/ false);
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LocalStats.GetStats.Accumulate(EHitOrMiss::Miss, ECacheStatType::Counter, ZenStats.CacheStats.Misses + ZenStats.CacheStats.UpstreamHits, /*bIsInGameThread*/ false);
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RemoteStats.GetStats.Accumulate(EHitOrMiss::Hit, ECacheStatType::Counter, ZenStats.CacheStats.UpstreamHits, /*bIsInGameThread*/ false);
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RemoteStats.GetStats.Accumulate(EHitOrMiss::Miss, ECacheStatType::Counter, ZenStats.CacheStats.Misses, /*bIsInGameThread*/ false);
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LocalStats.GetStats.Accumulate(EHitOrMiss::Hit, ECacheStatType::Bytes, LocalGetSize, /*bIsInGameThread*/ false);
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RemoteStats.GetStats.Accumulate(EHitOrMiss::Hit, ECacheStatType::Bytes, RemoteGetSize, /*bIsInGameThread*/ false);
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RemoteStats.PutStats.Accumulate(EHitOrMiss::Hit, ECacheStatType::Bytes, RemotePutSize, /*bIsInGameThread*/ false);
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#endif
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if (ZenStats.UpstreamStats.EndPointStats.IsEmpty())
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{
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OutNode = {TEXT("Zen"), ZenService.GetInstance().GetURL(), /*bIsLocal*/ true};
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OutNode.UsageStats.Add(TEXT(""), LocalStats);
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return;
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}
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TSharedRef<FDerivedDataCacheStatsNode> LocalNode =
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MakeShared<FDerivedDataCacheStatsNode>(TEXT("Zen"), ZenService.GetInstance().GetURL(), /*bIsLocal*/ true);
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LocalNode->UsageStats.Add(TEXT(""), LocalStats);
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TSharedRef<FDerivedDataCacheStatsNode> RemoteNode =
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MakeShared<FDerivedDataCacheStatsNode>(ZenStats.UpstreamStats.EndPointStats[0].Name, ZenStats.UpstreamStats.EndPointStats[0].Url, /*bIsLocal*/ false);
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RemoteNode->UsageStats.Add(TEXT(""), RemoteStats);
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OutNode = {TEXT("Zen Group"), TEXT(""), /*bIsLocal*/ true};
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OutNode.Children.Add(LocalNode);
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OutNode.Children.Add(RemoteNode);
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}
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bool FZenCacheStore::LegacyDebugOptions(FBackendDebugOptions& InOptions)
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{
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DebugOptions = InOptions;
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return true;
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}
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void FZenCacheStore::Put(
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const TConstArrayView<FCachePutRequest> Requests,
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IRequestOwner& Owner,
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FOnCachePutComplete&& OnComplete)
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{
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TRACE_CPUPROFILER_EVENT_SCOPE(ZenDDC::PutCachedRecord);
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COOK_STAT(auto Timer = UsageStats.TimePut());
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uint64 BatchSize = 0;
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TBatchView<const FCachePutRequest> Batches(Requests,
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[&BatchSize, this](const FCachePutRequest& NextRequest) -> EBatchView
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{
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const FCacheRecord& Record = NextRequest.Record;
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uint64 RecordSize = sizeof(FCacheKey) + Record.GetMeta().GetSize();
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for (const FValueWithId& Value : Record.GetValues())
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{
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RecordSize += Value.GetData().GetCompressedSize();
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}
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BatchSize += RecordSize;
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if (BatchSize > BatchPutMaxBytes)
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{
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BatchSize = RecordSize;
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return EBatchView::NewBatch;
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}
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return EBatchView::Continue;
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});
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auto OnHit = [this, &OnComplete COOK_STAT(, &Timer)](const FCachePutRequest& Request)
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{
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const FCacheKey& Key = Request.Record.GetKey();
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UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache Put complete for %s from '%s'"),
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*GetName(), *WriteToString<96>(Key), *Request.Name);
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COOK_STAT(Timer.AddHit(Private::GetCacheRecordCompressedSize(Request.Record)));
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OnComplete(Request.MakeResponse(EStatus::Ok));
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};
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auto OnMiss = [this, &OnComplete COOK_STAT(, &Timer)](const FCachePutRequest& Request)
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{
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const FCacheKey& Key = Request.Record.GetKey();
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UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache Put miss for '%s' from '%s'"),
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*GetName(), *WriteToString<96>(Key), *Request.Name);
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COOK_STAT(Timer.AddMiss());
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OnComplete(Request.MakeResponse(EStatus::Error));
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};
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for (TArrayView<const FCachePutRequest> Batch : Batches)
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{
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FCbPackage BatchPackage;
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FCbWriter BatchWriter;
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BatchWriter.BeginObject();
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{
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BatchWriter << ANSITEXTVIEW("Method") << "PutCacheRecords";
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BatchWriter.BeginObject(ANSITEXTVIEW("Params"));
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{
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ECachePolicy BatchDefaultPolicy = Batch[0].Policy.GetRecordPolicy();
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BatchWriter << ANSITEXTVIEW("DefaultPolicy") << *WriteToString<128>(BatchDefaultPolicy);
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BatchWriter.AddString(ANSITEXTVIEW("Namespace"), StructuredNamespace);
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BatchWriter.BeginArray(ANSITEXTVIEW("Requests"));
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for (const FCachePutRequest& Request : Batch)
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{
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const FCacheRecord& Record = Request.Record;
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BatchWriter.BeginObject();
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{
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BatchWriter.SetName(ANSITEXTVIEW("Record"));
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Record.Save(BatchPackage, BatchWriter);
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if (!Request.Policy.IsUniform() || Request.Policy.GetRecordPolicy() != BatchDefaultPolicy)
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{
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BatchWriter.SetName(ANSITEXTVIEW("Policy"));
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Request.Policy.Save(BatchWriter);
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}
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}
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BatchWriter.EndObject();
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}
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BatchWriter.EndArray();
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}
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BatchWriter.EndObject();
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}
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BatchWriter.EndObject();
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BatchPackage.SetObject(BatchWriter.Save().AsObject());
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FCbPackage BatchResponse;
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FHttpRequest::EResult HttpResult = FHttpRequest::EResult::Failed;
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{
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FScopedHttpPoolRequestPtr Request(RequestPool.Get());
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HttpResult = PerformBlockingRpc(*Request.Get(), TEXTVIEW("/z$/$rpc"), BatchPackage, BatchResponse);
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}
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int32 RequestIndex = 0;
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if (HttpResult == FHttpRequest::EResult::Success)
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{
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const FCbObject& ResponseObj = BatchResponse.GetObject();
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for (FCbField ResponseField : ResponseObj[ANSITEXTVIEW("Result")])
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{
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if (RequestIndex >= Batch.Num())
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{
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++RequestIndex;
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continue;
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}
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const FCachePutRequest& Request = Batch[RequestIndex++];
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const FCacheKey& Key = Request.Record.GetKey();
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bool bPutSucceeded = ResponseField.AsBool();
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if (DebugOptions.ShouldSimulatePutMiss(Key))
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{
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UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Simulated miss for put of %s from '%s'"),
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*GetName(), *WriteToString<96>(Key), *Request.Name);
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bPutSucceeded = false;
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}
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bPutSucceeded ? OnHit(Request) : OnMiss(Request);
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}
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if (RequestIndex != Batch.Num())
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{
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UE_LOG(LogDerivedDataCache, Warning,
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TEXT("Invalid response received from PutCacheRecords rpc: %d results expected, received %d."), Batch.Num(), RequestIndex);
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}
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}
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for (const FCachePutRequest& Request : Batch.RightChop(RequestIndex))
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{
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OnMiss(Request);
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}
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}
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}
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void FZenCacheStore::Get(
|
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const TConstArrayView<FCacheGetRequest> Requests,
|
|
IRequestOwner& Owner,
|
|
FOnCacheGetComplete&& OnComplete)
|
|
{
|
|
TRACE_CPUPROFILER_EVENT_SCOPE(ZenDDC::GetCacheRecord);
|
|
TRACE_COUNTER_ADD(ZenDDC_CacheRecordRequestCount, int64(Requests.Num()));
|
|
TRACE_COUNTER_ADD(ZenDDC_Get, int64(Requests.Num()));
|
|
COOK_STAT(auto Timer = UsageStats.TimeGet());
|
|
|
|
auto OnHit = [this, &OnComplete COOK_STAT(, &Timer)](const FCacheGetRequest& Request, FCacheRecord&& Record)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache hit for '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
|
|
TRACE_COUNTER_ADD(ZenDDC_GetHit, int64(1));
|
|
int64 ReceivedSize = Private::GetCacheRecordCompressedSize(Record);
|
|
TRACE_COUNTER_ADD(ZenDDC_BytesReceived, ReceivedSize);
|
|
COOK_STAT(Timer.AddHit(ReceivedSize));
|
|
|
|
OnComplete({Request.Name, MoveTemp(Record), Request.UserData, EStatus::Ok});
|
|
};
|
|
auto OnMiss = [this, &OnComplete](const FCacheGetRequest& Request)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache miss for '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
|
|
OnComplete(Request.MakeResponse(EStatus::Error));
|
|
};
|
|
|
|
ForEachBatch(CacheRecordBatchSize, Requests.Num(),
|
|
[this, &Requests, &Owner, &OnComplete, &OnHit, &OnMiss](int32 BatchFirst, int32 BatchLast)
|
|
{
|
|
TArrayView<const FCacheGetRequest> Batch(Requests.GetData() + BatchFirst, BatchLast - BatchFirst + 1);
|
|
|
|
FCbWriter BatchRequest;
|
|
BatchRequest.BeginObject();
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Method") << ANSITEXTVIEW("GetCacheRecords");
|
|
BatchRequest.BeginObject(ANSITEXTVIEW("Params"));
|
|
{
|
|
ECachePolicy BatchDefaultPolicy = Batch[0].Policy.GetRecordPolicy();
|
|
BatchRequest << ANSITEXTVIEW("DefaultPolicy") << *WriteToString<128>(BatchDefaultPolicy);
|
|
BatchRequest.AddString(ANSITEXTVIEW("Namespace"), StructuredNamespace);
|
|
|
|
BatchRequest.BeginArray(ANSITEXTVIEW("Requests"));
|
|
for (const FCacheGetRequest& Request : Batch)
|
|
{
|
|
BatchRequest.BeginObject();
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Key") << Request.Key;
|
|
if (!Request.Policy.IsUniform() || Request.Policy.GetRecordPolicy() != BatchDefaultPolicy)
|
|
{
|
|
BatchRequest.SetName(ANSITEXTVIEW("Policy"));
|
|
Request.Policy.Save(BatchRequest);
|
|
}
|
|
}
|
|
BatchRequest.EndObject();
|
|
}
|
|
BatchRequest.EndArray();
|
|
}
|
|
BatchRequest.EndObject();
|
|
}
|
|
BatchRequest.EndObject();
|
|
|
|
FCbPackage BatchResponse;
|
|
FHttpRequest::EResult HttpResult = FHttpRequest::EResult::Failed;
|
|
|
|
{
|
|
LLM_SCOPE_BYTAG(UntaggedDDCResult);
|
|
FScopedHttpPoolRequestPtr Request(RequestPool.Get());
|
|
HttpResult = PerformBlockingRpc(*Request.Get(), TEXTVIEW("/z$/$rpc"), BatchRequest.Save().AsObject(), BatchResponse);
|
|
}
|
|
|
|
int32 RequestIndex = 0;
|
|
if (HttpResult == FHttpRequest::EResult::Success)
|
|
{
|
|
const FCbObject& ResponseObj = BatchResponse.GetObject();
|
|
|
|
for (FCbField RecordField : ResponseObj[ANSITEXTVIEW("Result")])
|
|
{
|
|
if (RequestIndex >= Batch.Num())
|
|
{
|
|
++RequestIndex;
|
|
continue;
|
|
}
|
|
const FCacheGetRequest& Request = Batch[RequestIndex++];
|
|
|
|
const FCacheKey& Key = Request.Key;
|
|
FOptionalCacheRecord Record;
|
|
|
|
if (DebugOptions.ShouldSimulateGetMiss(Key))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Simulated miss for put of '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Key), *Request.Name);
|
|
}
|
|
else if (!RecordField.IsNull())
|
|
{
|
|
Record = FCacheRecord::Load(BatchResponse, RecordField.AsObject());
|
|
}
|
|
Record ? OnHit(Request, MoveTemp(Record).Get()) : OnMiss(Request);
|
|
}
|
|
if (RequestIndex != Batch.Num())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning,
|
|
TEXT("Invalid response received from GetCacheRecords rpc: %d results expected, received %d."), Batch.Num(), RequestIndex);
|
|
}
|
|
}
|
|
for (const FCacheGetRequest& Request : Batch.RightChop(RequestIndex))
|
|
{
|
|
OnMiss(Request);
|
|
}
|
|
});
|
|
|
|
TRACE_COUNTER_SUBTRACT(ZenDDC_CacheRecordRequestCount, int64(Requests.Num()));
|
|
}
|
|
|
|
void FZenCacheStore::PutValue(
|
|
TConstArrayView<FCachePutValueRequest> Requests,
|
|
IRequestOwner& Owner,
|
|
FOnCachePutValueComplete&& OnComplete)
|
|
{
|
|
TRACE_CPUPROFILER_EVENT_SCOPE(ZenDDC::PutValue);
|
|
COOK_STAT(auto Timer = UsageStats.TimePut());
|
|
|
|
uint64 BatchSize = 0;
|
|
TBatchView<const FCachePutValueRequest> Batches(Requests,
|
|
[&BatchSize, this](const FCachePutValueRequest& NextValue) -> EBatchView
|
|
{
|
|
uint64 ValueSize = sizeof(FCacheKey) + NextValue.Value.GetData().GetCompressedSize();
|
|
BatchSize += ValueSize;
|
|
if (BatchSize > BatchPutMaxBytes)
|
|
{
|
|
BatchSize = ValueSize;
|
|
return EBatchView::NewBatch;
|
|
}
|
|
return EBatchView::Continue;
|
|
});
|
|
|
|
auto OnHit = [this, &OnComplete COOK_STAT(, &Timer)](const FCachePutValueRequest& Request)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache PutValue complete for %s from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
COOK_STAT(Timer.AddHit(Request.Value.GetData().GetCompressedSize()));
|
|
OnComplete(Request.MakeResponse(EStatus::Ok));
|
|
};
|
|
auto OnMiss = [this, &OnComplete COOK_STAT(, &Timer)](const FCachePutValueRequest& Request)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache PutValue miss for '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
COOK_STAT(Timer.AddMiss());
|
|
OnComplete(Request.MakeResponse(EStatus::Error));
|
|
};
|
|
|
|
for (TArrayView<const FCachePutValueRequest> Batch : Batches)
|
|
{
|
|
FCbPackage BatchPackage;
|
|
FCbWriter BatchWriter;
|
|
BatchWriter.BeginObject();
|
|
{
|
|
BatchWriter << ANSITEXTVIEW("Method") << ANSITEXTVIEW("PutCacheValues");
|
|
BatchWriter.BeginObject(ANSITEXTVIEW("Params"));
|
|
{
|
|
ECachePolicy BatchDefaultPolicy = Batch[0].Policy;
|
|
BatchWriter << ANSITEXTVIEW("DefaultPolicy") << *WriteToString<128>(BatchDefaultPolicy);
|
|
BatchWriter.AddString(ANSITEXTVIEW("Namespace"), StructuredNamespace);
|
|
|
|
BatchWriter.BeginArray("Requests");
|
|
for (const FCachePutValueRequest& Request : Batch)
|
|
{
|
|
BatchWriter.BeginObject();
|
|
{
|
|
BatchWriter << ANSITEXTVIEW("Key") << Request.Key;
|
|
const FValue& Value = Request.Value;
|
|
BatchWriter.AddBinaryAttachment("RawHash", Value.GetRawHash());
|
|
if (Value.HasData())
|
|
{
|
|
BatchPackage.AddAttachment(FCbAttachment(Value.GetData()));
|
|
}
|
|
if (Request.Policy != BatchDefaultPolicy)
|
|
{
|
|
BatchWriter << ANSITEXTVIEW("Policy") << WriteToString<128>(Request.Policy);
|
|
}
|
|
}
|
|
BatchWriter.EndObject();
|
|
}
|
|
BatchWriter.EndArray();
|
|
}
|
|
BatchWriter.EndObject();
|
|
}
|
|
BatchWriter.EndObject();
|
|
BatchPackage.SetObject(BatchWriter.Save().AsObject());
|
|
|
|
FCbPackage BatchResponse;
|
|
FHttpRequest::EResult HttpResult = FHttpRequest::EResult::Failed;
|
|
{
|
|
FScopedHttpPoolRequestPtr Request(RequestPool.Get());
|
|
HttpResult = PerformBlockingRpc(*Request.Get(), TEXTVIEW("/z$/$rpc"), BatchPackage, BatchResponse);
|
|
}
|
|
|
|
int32 RequestIndex = 0;
|
|
if (HttpResult == FHttpRequest::EResult::Success)
|
|
{
|
|
const FCbObject& ResponseObj = BatchResponse.GetObject();
|
|
for (FCbField ResponseField : ResponseObj[ANSITEXTVIEW("Result")])
|
|
{
|
|
if (RequestIndex >= Batch.Num())
|
|
{
|
|
++RequestIndex;
|
|
continue;
|
|
}
|
|
const FCachePutValueRequest& Request = Batch[RequestIndex++];
|
|
|
|
bool bPutSucceeded = ResponseField.AsBool();
|
|
if (DebugOptions.ShouldSimulatePutMiss(Request.Key))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Simulated miss for PutValue of %s from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
bPutSucceeded = false;
|
|
}
|
|
bPutSucceeded ? OnHit(Request) : OnMiss(Request);
|
|
}
|
|
if (RequestIndex != Batch.Num())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning,
|
|
TEXT("Invalid response received from PutCacheValues rpc: %d results expected, received %d."), Batch.Num(), RequestIndex);
|
|
}
|
|
}
|
|
for (const FCachePutValueRequest& Request : Batch.RightChop(RequestIndex))
|
|
{
|
|
OnMiss(Request);
|
|
}
|
|
}
|
|
}
|
|
|
|
void FZenCacheStore::GetValue(
|
|
TConstArrayView<FCacheGetValueRequest> Requests,
|
|
IRequestOwner& Owner,
|
|
FOnCacheGetValueComplete&& OnComplete)
|
|
{
|
|
TRACE_CPUPROFILER_EVENT_SCOPE(ZenDDC::GetValue);
|
|
TRACE_COUNTER_ADD(ZenDDC_CacheRecordRequestCount, int64(Requests.Num()));
|
|
COOK_STAT(auto Timer = UsageStats.TimeGet());
|
|
TRACE_COUNTER_ADD(ZenDDC_Get, (int64)Requests.Num());
|
|
|
|
auto OnHit = [this, &OnComplete COOK_STAT(, &Timer)](const FCacheGetValueRequest& Request, FValue&& Value)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache hit for '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
TRACE_COUNTER_ADD(ZenDDC_GetHit, int64(1));
|
|
int64 ReceivedSize = Value.GetData().GetCompressedSize();
|
|
TRACE_COUNTER_ADD(ZenDDC_BytesReceived, ReceivedSize);
|
|
COOK_STAT(Timer.AddHit(ReceivedSize));
|
|
|
|
OnComplete({Request.Name, Request.Key, MoveTemp(Value), Request.UserData, EStatus::Ok});
|
|
};
|
|
auto OnMiss = [this, &OnComplete](const FCacheGetValueRequest& Request)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Cache miss for '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
|
|
OnComplete(Request.MakeResponse(EStatus::Error));
|
|
};
|
|
|
|
ForEachBatch(CacheRecordBatchSize, Requests.Num(),
|
|
[this, &Requests, &Owner, &OnComplete, &OnHit, &OnMiss](int32 BatchFirst, int32 BatchLast)
|
|
{
|
|
TArrayView<const FCacheGetValueRequest> Batch(Requests.GetData() + BatchFirst, BatchLast - BatchFirst + 1);
|
|
|
|
FCbWriter BatchRequest;
|
|
BatchRequest.BeginObject();
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Method") << ANSITEXTVIEW("GetCacheValues");
|
|
BatchRequest.BeginObject(ANSITEXTVIEW("Params"));
|
|
{
|
|
ECachePolicy BatchDefaultPolicy = Batch[0].Policy;
|
|
BatchRequest << ANSITEXTVIEW("DefaultPolicy") << *WriteToString<128>(BatchDefaultPolicy);
|
|
BatchRequest.AddString(ANSITEXTVIEW("Namespace"), StructuredNamespace);
|
|
|
|
BatchRequest.BeginArray("Requests");
|
|
for (const FCacheGetValueRequest& Request : Batch)
|
|
{
|
|
BatchRequest.BeginObject();
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Key") << Request.Key;
|
|
if (Request.Policy != BatchDefaultPolicy)
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Policy") << WriteToString<128>(Request.Policy);
|
|
}
|
|
}
|
|
BatchRequest.EndObject();
|
|
}
|
|
BatchRequest.EndArray();
|
|
}
|
|
BatchRequest.EndObject();
|
|
}
|
|
BatchRequest.EndObject();
|
|
|
|
FCbPackage BatchResponse;
|
|
FHttpRequest::EResult HttpResult = FHttpRequest::EResult::Failed;
|
|
|
|
{
|
|
LLM_SCOPE_BYTAG(UntaggedDDCResult);
|
|
FScopedHttpPoolRequestPtr Request(RequestPool.Get());
|
|
HttpResult = PerformBlockingRpc(*Request.Get(), TEXTVIEW("/z$/$rpc"), BatchRequest.Save().AsObject(), BatchResponse);
|
|
}
|
|
|
|
int32 RequestIndex = 0;
|
|
if (HttpResult == FHttpRequest::EResult::Success)
|
|
{
|
|
const FCbObject& ResponseObj = BatchResponse.GetObject();
|
|
|
|
for (FCbFieldView ResultField : ResponseObj[ANSITEXTVIEW("Result")])
|
|
{
|
|
if (RequestIndex >= Batch.Num())
|
|
{
|
|
++RequestIndex;
|
|
continue;
|
|
}
|
|
const FCacheGetValueRequest& Request = Batch[RequestIndex++];
|
|
|
|
FCbObjectView ResultObj = ResultField.AsObjectView();
|
|
TOptional<FValue> Value;
|
|
if (DebugOptions.ShouldSimulateGetMiss(Request.Key))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Simulated miss for GetValue of '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key), *Request.Name);
|
|
}
|
|
else
|
|
{
|
|
FCbFieldView RawHashField = ResultObj["RawHash"];
|
|
FIoHash RawHash = RawHashField.AsHash();
|
|
if (const FCbAttachment* Attachment = BatchResponse.FindAttachment(RawHash))
|
|
{
|
|
Value.Emplace(Attachment->AsCompressedBinary());
|
|
}
|
|
else
|
|
{
|
|
FCbFieldView RawSizeField = ResultObj["RawSize"];
|
|
uint64 RawSize = RawSizeField.AsUInt64();
|
|
if (!RawSizeField.HasError() && !RawHashField.HasError())
|
|
{
|
|
Value.Emplace(RawHash, RawSize);
|
|
}
|
|
}
|
|
}
|
|
(bool)Value ? OnHit(Request, MoveTemp(*Value)) : OnMiss(Request);
|
|
}
|
|
if (RequestIndex != Batch.Num())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning,
|
|
TEXT("Invalid response received from GetCacheValues rpc: %d results expected, received %d."), Batch.Num(), RequestIndex);
|
|
}
|
|
}
|
|
for (const FCacheGetValueRequest& Request : Batch.RightChop(RequestIndex))
|
|
{
|
|
OnMiss(Request);
|
|
}
|
|
});
|
|
TRACE_COUNTER_SUBTRACT(ZenDDC_CacheRecordRequestCount, int64(Requests.Num()));
|
|
}
|
|
|
|
void FZenCacheStore::GetChunks(
|
|
TConstArrayView<FCacheGetChunkRequest> Requests,
|
|
IRequestOwner& Owner,
|
|
FOnCacheGetChunkComplete&& OnComplete)
|
|
{
|
|
TRACE_CPUPROFILER_EVENT_SCOPE(ZenDDC::GetChunks);
|
|
TRACE_COUNTER_ADD(ZenDDC_ChunkRequestCount, int64(Requests.Num()));
|
|
TRACE_COUNTER_ADD(ZenDDC_Get, int64(Requests.Num()));
|
|
COOK_STAT(auto Timer = UsageStats.TimeGet());
|
|
|
|
TArray<FCacheGetChunkRequest, TInlineAllocator<16>> SortedRequests(Requests);
|
|
SortedRequests.StableSort(TChunkLess());
|
|
auto OnHit = [this, &OnComplete COOK_STAT(, &Timer)](const FCacheGetChunkRequest& Request, FIoHash&& RawHash, uint64 RawSize, FSharedBuffer&& RequestedBytes)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: CacheChunk hit for '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key, '/', Request.Id), *Request.Name);
|
|
TRACE_COUNTER_ADD(ZenDDC_GetHit, int64(1));
|
|
COOK_STAT(Timer.AddHit(RawSize));
|
|
OnComplete({Request.Name, Request.Key, Request.Id, Request.RawOffset,
|
|
RawSize, MoveTemp(RawHash), MoveTemp(RequestedBytes), Request.UserData, EStatus::Ok});
|
|
};
|
|
|
|
auto OnMiss = [this, &OnComplete COOK_STAT(, &Timer)](const FCacheGetChunkRequest& Request)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Display, TEXT("%s: CacheChunk miss with missing value '%s' for '%s' from '%s'"),
|
|
*GetName(), *WriteToString<16>(Request.Id), *WriteToString<96>(Request.Key), *Request.Name);
|
|
OnComplete(Request.MakeResponse(EStatus::Error));
|
|
};
|
|
|
|
ForEachBatch(CacheChunksBatchSize, SortedRequests.Num(),
|
|
[this, &SortedRequests, &Owner, &OnHit, &OnMiss](int32 BatchFirst, int32 BatchLast)
|
|
{
|
|
TArrayView<const FCacheGetChunkRequest> Batch(SortedRequests.GetData() + BatchFirst, BatchLast - BatchFirst + 1);
|
|
|
|
FCbWriter BatchRequest;
|
|
BatchRequest.BeginObject();
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Method") << "GetCacheChunks";
|
|
BatchRequest.AddInteger(ANSITEXTVIEW("MethodVersion"), 1);
|
|
BatchRequest.BeginObject(ANSITEXTVIEW("Params"));
|
|
{
|
|
ECachePolicy DefaultPolicy = Batch[0].Policy;
|
|
BatchRequest << ANSITEXTVIEW("DefaultPolicy") << WriteToString<128>(DefaultPolicy);
|
|
BatchRequest.AddString(ANSITEXTVIEW("Namespace"), StructuredNamespace);
|
|
|
|
BatchRequest.BeginArray(ANSITEXTVIEW("ChunkRequests"));
|
|
for (const FCacheGetChunkRequest& Request : Batch)
|
|
{
|
|
BatchRequest.BeginObject();
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Key") << Request.Key;
|
|
|
|
if (Request.Id.IsValid())
|
|
{
|
|
BatchRequest.AddObjectId(ANSITEXTVIEW("ValueId"), Request.Id);
|
|
}
|
|
if (Request.RawOffset != 0)
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("RawOffset") << Request.RawOffset;
|
|
}
|
|
if (Request.RawSize != MAX_uint64)
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("RawSize") << Request.RawSize;
|
|
}
|
|
if (!Request.RawHash.IsZero())
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("ChunkId") << Request.RawHash;
|
|
}
|
|
if (Request.Policy != DefaultPolicy)
|
|
{
|
|
BatchRequest << ANSITEXTVIEW("Policy") << WriteToString<128>(Request.Policy);
|
|
}
|
|
}
|
|
BatchRequest.EndObject();
|
|
}
|
|
BatchRequest.EndArray();
|
|
}
|
|
BatchRequest.EndObject();
|
|
}
|
|
BatchRequest.EndObject();
|
|
|
|
FCbPackage BatchResponse;
|
|
FHttpRequest::EResult HttpResult = FHttpRequest::EResult::Failed;
|
|
|
|
{
|
|
LLM_SCOPE_BYTAG(UntaggedDDCResult);
|
|
FScopedHttpPoolRequestPtr Request(RequestPool.Get());
|
|
HttpResult = PerformBlockingRpc(*Request.Get(), TEXTVIEW("/z$/$rpc"), BatchRequest.Save().AsObject(), BatchResponse);
|
|
}
|
|
|
|
int32 RequestIndex = 0;
|
|
if (HttpResult == FHttpRequest::EResult::Success)
|
|
{
|
|
const FCbObject& ResponseObj = BatchResponse.GetObject();
|
|
|
|
for (FCbFieldView ResultView : ResponseObj[ANSITEXTVIEW("Result")])
|
|
{
|
|
if (RequestIndex >= Batch.Num())
|
|
{
|
|
++RequestIndex;
|
|
continue;
|
|
}
|
|
const FCacheGetChunkRequest& Request = Batch[RequestIndex++];
|
|
|
|
FIoHash RawHash;
|
|
bool Succeeded = false;
|
|
uint64 RawSize = 0;
|
|
FCbObjectView ResultObject = ResultView.AsObjectView();
|
|
FSharedBuffer RequestedBytes;
|
|
if (DebugOptions.ShouldSimulateGetMiss(Request.Key))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Verbose, TEXT("%s: Simulated miss for get of '%s' from '%s'"),
|
|
*GetName(), *WriteToString<96>(Request.Key, '/', Request.Id), *Request.Name);
|
|
}
|
|
else
|
|
{
|
|
FCbFieldView HashView = ResultObject[ANSITEXTVIEW("RawHash")];
|
|
RawHash = HashView.AsHash();
|
|
if (!HashView.HasError())
|
|
{
|
|
if (const FCbAttachment* Attachment = BatchResponse.FindAttachment(HashView.AsHash()))
|
|
{
|
|
FCompressedBuffer CompressedBuffer = Attachment->AsCompressedBinary();
|
|
if (CompressedBuffer)
|
|
{
|
|
TRACE_COUNTER_ADD(ZenDDC_BytesReceived, CompressedBuffer.GetCompressedSize());
|
|
RequestedBytes = FCompressedBufferReader(CompressedBuffer).Decompress(Request.RawOffset, Request.RawSize);
|
|
RawSize = RequestedBytes.GetSize();
|
|
Succeeded = true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
FCbFieldView RawSizeField = ResultObject[ANSITEXTVIEW("RawSize")];
|
|
uint64 TotalSize = RawSizeField.AsUInt64();
|
|
Succeeded = !RawSizeField.HasError();
|
|
if (Succeeded)
|
|
{
|
|
RawSize = FMath::Min(Request.RawSize, TotalSize - FMath::Min(Request.RawOffset, TotalSize));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Succeeded ? OnHit(Request, MoveTemp(RawHash), RawSize, MoveTemp(RequestedBytes)) : OnMiss(Request);
|
|
}
|
|
}
|
|
for (const FCacheGetChunkRequest& Request : Batch.RightChop(RequestIndex))
|
|
{
|
|
OnMiss(Request);
|
|
}
|
|
});
|
|
|
|
TRACE_COUNTER_SUBTRACT(ZenDDC_ChunkRequestCount, int64(Requests.Num()));
|
|
}
|
|
|
|
TTuple<ILegacyCacheStore*, ECacheStoreFlags> CreateZenCacheStore(const TCHAR* NodeName, const TCHAR* Config)
|
|
{
|
|
FString ServiceUrl;
|
|
FParse::Value(Config, TEXT("Host="), ServiceUrl);
|
|
|
|
FString Namespace;
|
|
if (!FParse::Value(Config, TEXT("Namespace="), Namespace))
|
|
{
|
|
Namespace = FApp::GetProjectName();
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("%s: Missing required parameter 'Namespace', falling back to '%s'"), NodeName, *Namespace);
|
|
}
|
|
|
|
FString StructuredNamespace;
|
|
if (!FParse::Value(Config, TEXT("StructuredNamespace="), StructuredNamespace))
|
|
{
|
|
StructuredNamespace = Namespace;
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("%s: Missing required parameter 'StructuredNamespace', falling back to Namespace: '%s'"), NodeName, *StructuredNamespace);
|
|
}
|
|
|
|
TUniquePtr<FZenCacheStore> Backend = MakeUnique<FZenCacheStore>(*ServiceUrl, *Namespace, *StructuredNamespace);
|
|
if (!Backend->IsUsable())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("%s: Failed to contact the service (%s), will not use it."), NodeName, *Backend->GetName());
|
|
Backend.Reset();
|
|
}
|
|
|
|
return MakeTuple(Backend.Release(), ECacheStoreFlags::Local | ECacheStoreFlags::Remote | ECacheStoreFlags::Query | ECacheStoreFlags::Store);
|
|
}
|
|
|
|
} // namespace UE::DerivedData
|
|
|
|
#else
|
|
|
|
namespace UE::DerivedData
|
|
{
|
|
|
|
TTuple<ILegacyCacheStore*, ECacheStoreFlags> CreateZenCacheStore(const TCHAR* NodeName, const TCHAR* Config)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("%s: Zen cache is not yet supported in the current build configuration."), NodeName);
|
|
return MakeTuple(nullptr, ECacheStoreFlags::None);
|
|
}
|
|
|
|
} // UE::DerivedData
|
|
|
|
#endif // UE_WITH_ZEN
|