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#rb Per.Larsson, Devin.Doucette #jira UE-133497 #rnx #preflight 61f835491c5ac5523462810a - A lot of files have been touched but most of this is changing FPayload::IsValid to !FIoHash::IsZero, the main changes are in EditorBulkData/EditorBulkDataTests - The only difference between FPayloadId and FIoHash is that the former considered the hash of an invalid or empty buffer to be 'invalid' too where as FIoHash would return a valid hash -- To keep behaviour the same, we only hash payloads in EditorBulkData using a utility method ::HashBuffer which will not hash empty or invalid payloads and return a default FIoHash instead. -- Unit tests have been extended to prove that the behaviour has not changed. #ROBOMERGE-AUTHOR: paul.chipchase #ROBOMERGE-SOURCE: CL 18806362 in //UE5/Release-5.0/... via CL 18808527 via CL 18821790 #ROBOMERGE-BOT: UE5 (Release-Engine-Test -> Main) (v908-18788545) [CL 18822154 by paul chipchase in ue5-main branch]
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "IVirtualizationBackend.h"
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#include "DerivedDataCacheKey.h"
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namespace UE::DerivedData { enum class ECachePolicy : uint32; }
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namespace UE::Virtualization
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{
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/**
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* A backend that uses the DDC2 as it's storage mechanism. It is intended to be used as a local caching
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* system to speed up operations rather than for use as persistent storage.
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*
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* Ini file setup:
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* 'Name'=(Type=DDCBackend, Bucket="XXX", LocalStorage=True/False, RemoteStorage=True/False)
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*
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* Required Values:
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* 'Name': The backend name in the hierarchy.
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*
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* Optional Values:
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* Bucket: An alphanumeric identifier used to group the payloads together in storage. [Default="BulkData"]
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* LocalStorage: When set to true, the payloads can be stored locally. [Default=true]
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* RemoteStorage: When set to true, the payloads can be stored remotely. [Default=true]
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*/
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class FDDCBackend final : public IVirtualizationBackend
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{
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public:
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explicit FDDCBackend(FStringView ConfigName, FStringView InDebugName);
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virtual ~FDDCBackend() = default;
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private:
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/* IVirtualizationBackend implementation */
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virtual bool Initialize(const FString& ConfigEntry) override;
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virtual EPushResult PushData(const FIoHash& Id, const FCompressedBuffer& Payload, const FString& PackageContext) override;
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virtual FCompressedBuffer PullData(const FIoHash& Id) override;
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virtual bool DoesPayloadExist(const FIoHash& Id) override;
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private:
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/** The bucket being used to group together the virtualized payloads in storage */
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FString BucketName;
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/** The FCacheBucket used with the DDC, cached to avoid recreating it for each request */
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UE::DerivedData::FCacheBucket Bucket;
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/** The policy to use when uploading or downloading data from the cache */
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UE::DerivedData::ECachePolicy TransferPolicy;
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/** The policy to use when querying the cache for information */
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UE::DerivedData::ECachePolicy QueryPolicy;
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};
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} // namespace UE::Virtualization
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