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The interface was in the public folder before 5.0, but was not usable from there in a meaningful way. #rb Zousar.Shaker #rnx #preflight 61bbac388a62de8385c132c7 #ROBOMERGE-AUTHOR: devin.doucette #ROBOMERGE-SOURCE: CL 18479761 in //UE5/Release-5.0/... via CL 18481541 #ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v899-18417669) [CL 18481817 by devin doucette in ue5-release-engine-test branch]
1371 lines
44 KiB
C++
1371 lines
44 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "CoreMinimal.h"
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#include "HAL/PlatformFileManager.h"
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#include "HAL/FileManager.h"
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#include "Misc/CommandLine.h"
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#include "Misc/Paths.h"
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#include "HAL/ThreadSafeCounter.h"
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#include "Misc/Guid.h"
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#include "HAL/IConsoleManager.h"
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#include "Misc/App.h"
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#include "DerivedDataBackendInterface.h"
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#include "DerivedDataCacheUsageStats.h"
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#include "MemoryDerivedDataBackend.h"
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#include "HttpDerivedDataBackend.h"
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#include "DerivedDataBackendAsyncPutWrapper.h"
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#include "PakFileDerivedDataBackend.h"
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#include "S3DerivedDataBackend.h"
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#include "ZenDerivedDataBackend.h"
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#include "HierarchicalDerivedDataBackend.h"
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#include "DerivedDataLimitKeyLengthWrapper.h"
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#include "DerivedDataBackendThrottleWrapper.h"
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#include "DerivedDataBackendVerifyWrapper.h"
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#include "Misc/EngineBuildSettings.h"
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#include "Modules/ModuleManager.h"
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#include "Misc/ConfigCacheIni.h"
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#include "Containers/StringFwd.h"
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#include "Misc/StringBuilder.h"
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#include "ProfilingDebugging/CookStats.h"
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#include "Math/UnitConversion.h"
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#include "Internationalization/FastDecimalFormat.h"
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#include "Math/BasicMathExpressionEvaluator.h"
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#include "Serialization/CompactBinaryPackage.h"
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#include <atomic>
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DEFINE_LOG_CATEGORY(LogDerivedDataCache);
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#define MAX_BACKEND_KEY_LENGTH (120)
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#define LOCTEXT_NAMESPACE "DerivedDataBackendGraph"
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namespace UE::DerivedData::CacheStore::FileSystem
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{
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FDerivedDataBackendInterface* CreateFileSystemDerivedDataBackend(const TCHAR* CacheDirectory, const TCHAR* InParams, const TCHAR* InAccessLogFileName = nullptr);
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} // UE::DerivedData::CacheStore::FileSystem
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namespace UE::DerivedData::Backends
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{
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/**
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* This class is used to create a singleton that represents the derived data cache hierarchy and all of the wrappers necessary
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* ideally this would be data driven and the backends would be plugins...
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**/
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class FDerivedDataBackendGraph : public FDerivedDataBackend
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{
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public:
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/**
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* constructor, builds the cache tree
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**/
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FDerivedDataBackendGraph()
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: RootCache(NULL)
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, BootCache(NULL)
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, WritePakCache(NULL)
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, AsyncPutWrapper(NULL)
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, KeyLengthWrapper(NULL)
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, HierarchicalWrapper(NULL)
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, bUsingSharedDDC(false)
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, bIsShuttingDown(false)
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, MountPakCommand(
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TEXT( "DDC.MountPak" ),
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*LOCTEXT("CommandText_DDCMountPak", "Mounts read-only pak file").ToString(),
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FConsoleCommandWithArgsDelegate::CreateRaw( this, &FDerivedDataBackendGraph::MountPakCommandHandler ) )
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, UnountPakCommand(
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TEXT( "DDC.UnmountPak" ),
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*LOCTEXT("CommandText_DDCUnmountPak", "Unmounts read-only pak file").ToString(),
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FConsoleCommandWithArgsDelegate::CreateRaw( this, &FDerivedDataBackendGraph::UnmountPakCommandHandler ) )
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{
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check(IsInGameThread()); // we pretty much need this to be initialized from the main thread...it uses GConfig, etc
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check(GConfig && GConfig->IsReadyForUse());
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RootCache = NULL;
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TMap<FString, FDerivedDataBackendInterface*> ParsedNodes;
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// Create the graph using ini settings. The string "default" forwards creation to use the default graph.
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if( FParse::Value( FCommandLine::Get(), TEXT("-DDC="), GraphName ) && FCString::Stricmp(*GraphName, TEXT("default")) != 0 )
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{
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if( GraphName.Len() > 0 )
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{
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if ( GraphName == TEXT("None"))
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{
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UE_LOG(LogDerivedDataCache, Display, TEXT("DDC backend graph of 'None' specified, graph will be invalid for use."));
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return;
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}
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RootCache = ParseNode( TEXT("Root"), GEngineIni, *GraphName, ParsedNodes );
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}
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if( RootCache == NULL )
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{
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// Remove references to any backend instances that might have been created
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ParsedNodes.Empty();
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DestroyCreatedBackends();
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UE_LOG( LogDerivedDataCache, Warning, TEXT("FDerivedDataBackendGraph: Unable to create backend graph using the specified graph settings (\"%s\"). Reverting to the default graph."), *GraphName );
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}
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}
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if( !RootCache )
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{
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// Use default graph
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GraphName = FApp::IsEngineInstalled() ? TEXT("InstalledDerivedDataBackendGraph") : TEXT("DerivedDataBackendGraph");
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FString Entry;
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if( !GConfig->GetString( *GraphName, TEXT("Root"), Entry, GEngineIni ) || !Entry.Len())
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{
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UE_LOG( LogDerivedDataCache, Fatal, TEXT("Unable to create backend graph using the default graph settings (%s) ini=%s."), *GraphName, *GEngineIni );
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}
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RootCache = ParseNode( TEXT("Root"), GEngineIni, *GraphName, ParsedNodes );
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if (!RootCache)
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{
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UE_LOG(LogDerivedDataCache, Fatal, TEXT("Unable to create backend graph using the default graph settings (%s) ini=%s. ")
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TEXT("At least one backend in the graph must be available."), *GraphName, *GEngineIni);
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}
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}
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// Make sure AsyncPutWrapper and KeyLengthWrapper are created
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if( !AsyncPutWrapper )
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{
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AsyncPutWrapper = new FDerivedDataBackendAsyncPutWrapper( RootCache, true );
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check(AsyncPutWrapper);
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CreatedBackends.Add( AsyncPutWrapper );
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RootCache = AsyncPutWrapper;
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}
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if ( !KeyLengthWrapper )
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{
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KeyLengthWrapper = new FDerivedDataLimitKeyLengthWrapper( RootCache, MAX_BACKEND_KEY_LENGTH );
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check(KeyLengthWrapper);
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CreatedBackends.Add( KeyLengthWrapper );
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RootCache = KeyLengthWrapper;
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}
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}
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/**
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* Helper function to get the value of parsed bool as the return value
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**/
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bool GetParsedBool( const TCHAR* Stream, const TCHAR* Match ) const
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{
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bool bValue = 0;
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FParse::Bool( Stream, Match, bValue );
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return bValue;
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}
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/**
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* Parses backend graph node from ini settings
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*
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* @param NodeName Name of the node to parse
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* @param IniFilename Ini filename
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* @param IniSection Section in the ini file containing the graph definition
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* @param InParsedNodes Map of parsed nodes and their names to be able to find already parsed nodes
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* @return Derived data backend interface instance created from ini settings
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*/
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FDerivedDataBackendInterface* ParseNode( const TCHAR* NodeName, const FString& IniFilename, const TCHAR* IniSection, TMap<FString, FDerivedDataBackendInterface*>& InParsedNodes )
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{
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FDerivedDataBackendInterface* ParsedNode = NULL;
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FString Entry;
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if( GConfig->GetString( IniSection, NodeName, Entry, IniFilename ) )
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{
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// Trim whitespace at the beginning.
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Entry.TrimStartInline();
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// Remove brackets.
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Entry.RemoveFromStart(TEXT("("));
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Entry.RemoveFromEnd(TEXT(")"));
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FString NodeType;
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if( FParse::Value( *Entry, TEXT("Type="), NodeType ) )
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{
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if( NodeType == TEXT("FileSystem") )
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{
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ParsedNode = ParseDataCache( NodeName, *Entry );
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}
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else if( NodeType == TEXT("Boot") )
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{
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if( BootCache == NULL )
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{
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BootCache = ParseBootCache( NodeName, *Entry, BootCacheFilename );
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ParsedNode = BootCache;
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}
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else
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("FDerivedDataBackendGraph: Unable to create %s Boot cache because only one Boot or Sparse cache node is supported."), NodeName );
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}
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}
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else if( NodeType == TEXT("Memory") )
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{
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ParsedNode = ParseMemoryCache( NodeName, *Entry );
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}
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else if( NodeType == TEXT("Hierarchical") )
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{
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ParsedNode = ParseHierarchicalCache( NodeName, *Entry, IniFilename, IniSection, InParsedNodes );
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}
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else if( NodeType == TEXT("KeyLength") )
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{
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if( KeyLengthWrapper == NULL )
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{
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KeyLengthWrapper = ParseKeyLength( NodeName, *Entry, IniFilename, IniSection, InParsedNodes );
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ParsedNode = KeyLengthWrapper;
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}
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else
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("FDerivedDataBackendGraph: Unable to create %s KeyLengthWrapper because only one KeyLength node is supported."), NodeName );
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}
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}
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else if( NodeType == TEXT("AsyncPut") )
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{
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if( AsyncPutWrapper == NULL )
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{
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AsyncPutWrapper = ParseAsyncPut( NodeName, *Entry, IniFilename, IniSection, InParsedNodes );
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ParsedNode = AsyncPutWrapper;
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}
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else
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("FDerivedDataBackendGraph: Unable to create %s AsyncPutWrapper because only one AsyncPutWrapper node is supported."), NodeName );
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}
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}
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else if( NodeType == TEXT("Verify") )
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{
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ParsedNode = ParseVerify( NodeName, *Entry, IniFilename, IniSection, InParsedNodes );
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}
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else if( NodeType == TEXT("ReadPak") )
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{
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ParsedNode = ParsePak( NodeName, *Entry, false );
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}
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else if( NodeType == TEXT("WritePak") )
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{
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ParsedNode = ParsePak( NodeName, *Entry, true );
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}
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else if (NodeType == TEXT("S3"))
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{
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ParsedNode = ParseS3Cache(NodeName, *Entry);
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}
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else if (NodeType == TEXT("Http"))
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{
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ParsedNode = ParseHttpCache(NodeName, *Entry, IniFilename, IniSection);
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}
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else if (NodeType == TEXT("Zen"))
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{
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ParsedNode = ParseZenCache(NodeName, *Entry);
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}
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if (ParsedNode)
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{
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// Add a throttling layer if parameters are found
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uint32 LatencyMS = 0;
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FParse::Value(*Entry, TEXT("LatencyMS="), LatencyMS);
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uint32 MaxBytesPerSecond = 0;
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FParse::Value(*Entry, TEXT("MaxBytesPerSecond="), MaxBytesPerSecond);
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if (LatencyMS != 0 || MaxBytesPerSecond != 0)
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{
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ParsedNode = new FDerivedDataBackendThrottleWrapper(ParsedNode, LatencyMS, MaxBytesPerSecond, *Entry);
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}
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}
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}
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}
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if( ParsedNode )
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{
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// Store this node so that we don't require any order of adding backend nodes
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InParsedNodes.Add( NodeName, ParsedNode );
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// Keep references to all created nodes.
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CreatedBackends.AddUnique( ParsedNode );
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// parse any debug options for this backend. E.g. -ddc-<name>-missrate
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FDerivedDataBackendInterface::FBackendDebugOptions DebugOptions;
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if (FDerivedDataBackendInterface::FBackendDebugOptions::ParseFromTokens(DebugOptions, NodeName, FCommandLine::Get()))
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{
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if (!ParsedNode->ApplyDebugOptions(DebugOptions))
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{
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UE_LOG(LogDerivedDataCache, Warning, TEXT("Node %s is ignoring one or mode -ddc-<nodename>-opt debug options"), NodeName);
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}
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}
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}
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return ParsedNode;
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}
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/**
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* Creates Read/write Pak file interface from ini settings
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*
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* @param NodeName Node name
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* @param Entry Node definition
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* @param bWriting true to create pak interface for writing
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* @return Pak file data backend interface instance or NULL if unsuccessful
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*/
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FDerivedDataBackendInterface* ParsePak( const TCHAR* NodeName, const TCHAR* Entry, const bool bWriting )
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{
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using namespace CacheStore::PakFile;
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FDerivedDataBackendInterface* PakNode = NULL;
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FString PakFilename;
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FParse::Value( Entry, TEXT("Filename="), PakFilename );
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bool bCompressed = GetParsedBool(Entry, TEXT("Compressed="));
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if( !PakFilename.Len() )
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{
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UE_LOG( LogDerivedDataCache, Log, TEXT("FDerivedDataBackendGraph: %s pak cache Filename not found in *engine.ini, will not use a pak cache."), NodeName );
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}
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else
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{
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// now add the pak read cache (if any) to the front of the cache hierarchy
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if ( bWriting )
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{
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FGuid Temp = FGuid::NewGuid();
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ReadPakFilename = PakFilename;
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WritePakFilename = PakFilename + TEXT(".") + Temp.ToString();
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WritePakCache = bCompressed? new FCompressedPakFileDerivedDataBackend( *WritePakFilename, true ) : new FPakFileDerivedDataBackend( *WritePakFilename, true );
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PakNode = WritePakCache;
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}
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else
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{
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bool bReadPak = FPlatformFileManager::Get().GetPlatformFile().FileExists( *PakFilename );
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if( bReadPak )
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{
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FPakFileDerivedDataBackend* ReadPak = bCompressed? new FCompressedPakFileDerivedDataBackend( *PakFilename, false ) : new FPakFileDerivedDataBackend( *PakFilename, false );
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ReadPakFilename = PakFilename;
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PakNode = ReadPak;
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ReadPakCache.Add(ReadPak);
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}
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else
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{
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UE_LOG( LogDerivedDataCache, Log, TEXT("FDerivedDataBackendGraph: %s pak cache file %s not found, will not use a pak cache."), NodeName, *PakFilename );
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}
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}
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}
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return PakNode;
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}
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/**
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* Creates Verify wrapper interface from ini settings.
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*
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* @param NodeName Node name.
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* @param Entry Node definition.
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* @param IniFilename ini filename.
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* @param IniSection ini section containing graph definition
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* @param InParsedNodes map of nodes and their names which have already been parsed
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* @return Verify wrapper backend interface instance or NULL if unsuccessful
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*/
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FDerivedDataBackendInterface* ParseVerify( const TCHAR* NodeName, const TCHAR* Entry, const FString& IniFilename, const TCHAR* IniSection, TMap<FString, FDerivedDataBackendInterface*>& InParsedNodes )
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{
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FDerivedDataBackendInterface* InnerNode = NULL;
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FString InnerName;
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if( FParse::Value( Entry, TEXT("Inner="), InnerName ) )
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{
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FDerivedDataBackendInterface** ParsedInnerNode = InParsedNodes.Find( InnerName );
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if( ParsedInnerNode )
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("Inner node %s for Verify node %s already exists. Nodes can only be used once."), *InnerName, NodeName );
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return NULL;
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}
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else
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{
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InnerNode = ParseNode( *InnerName, IniFilename, IniSection, InParsedNodes );
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}
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}
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FDerivedDataBackendInterface* VerifyNode = NULL;
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if( InnerNode )
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{
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IFileManager::Get().DeleteDirectory(*(FPaths::ProjectSavedDir() / TEXT("VerifyDDC/")), false, true);
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const bool bFix = GetParsedBool( Entry, TEXT("Fix=") );
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VerifyNode = new FDerivedDataBackendVerifyWrapper( InnerNode, bFix );
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}
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else
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("Unable to find inner node %s for Verify node %s. Verify node will not be created."), *InnerName, NodeName );
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}
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return VerifyNode;
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}
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/**
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* Creates AsyncPut wrapper interface from ini settings.
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*
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* @param NodeName Node name.
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* @param Entry Node definition.
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* @param IniFilename ini filename.
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* @param IniSection ini section containing graph definition
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* @param InParsedNodes map of nodes and their names which have already been parsed
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* @return AsyncPut wrapper backend interface instance or NULL if unsuccessfull
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*/
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FDerivedDataBackendInterface* ParseAsyncPut( const TCHAR* NodeName, const TCHAR* Entry, const FString& IniFilename, const TCHAR* IniSection, TMap<FString, FDerivedDataBackendInterface*>& InParsedNodes )
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{
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FDerivedDataBackendInterface* InnerNode = NULL;
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FString InnerName;
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if( FParse::Value( Entry, TEXT("Inner="), InnerName ) )
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{
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FDerivedDataBackendInterface** ParsedInnerNode = InParsedNodes.Find( InnerName );
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if( ParsedInnerNode )
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("Inner node %s for AsyncPut node %s already exists. Nodes can only be used once."), *InnerName, NodeName );
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return NULL;
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}
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else
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{
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InnerNode = ParseNode( *InnerName, IniFilename, IniSection, InParsedNodes );
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}
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}
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FDerivedDataBackendInterface* AsyncNode = NULL;
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if( InnerNode )
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{
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AsyncNode = new FDerivedDataBackendAsyncPutWrapper( InnerNode, true );
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}
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else
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("Unable to find inner node %s for AsyncPut node %s. AsyncPut node will not be created."), *InnerName, NodeName );
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}
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return AsyncNode;
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}
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/**
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* Creates KeyLength wrapper interface from ini settings.
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*
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* @param NodeName Node name.
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* @param Entry Node definition.
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* @param IniFilename ini filename.
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* @param IniSection ini section containing graph definition
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* @param InParsedNodes map of nodes and their names which have already been parsed
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* @return KeyLength wrapper backend interface instance or NULL if unsuccessfull
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*/
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FDerivedDataBackendInterface* ParseKeyLength( const TCHAR* NodeName, const TCHAR* Entry, const FString& IniFilename, const TCHAR* IniSection, TMap<FString, FDerivedDataBackendInterface*>& InParsedNodes )
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{
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FDerivedDataBackendInterface* InnerNode = NULL;
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FString InnerName;
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if( FParse::Value( Entry, TEXT("Inner="), InnerName ) )
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{
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FDerivedDataBackendInterface** ParsedInnerNode = InParsedNodes.Find( InnerName );
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if( ParsedInnerNode )
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("Inner node %s for KeyLength node %s already exists. Nodes can only be used once."), *InnerName, NodeName );
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return NULL;
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}
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else
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{
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InnerNode = ParseNode( *InnerName, IniFilename, IniSection, InParsedNodes );
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}
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}
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FDerivedDataBackendInterface* KeyLengthNode = NULL;
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if( InnerNode )
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{
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int32 KeyLength = MAX_BACKEND_KEY_LENGTH;
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FParse::Value( Entry, TEXT("Length="), KeyLength );
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KeyLength = FMath::Clamp( KeyLength, 0, MAX_BACKEND_KEY_LENGTH );
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KeyLengthNode = new FDerivedDataLimitKeyLengthWrapper( InnerNode, KeyLength );
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}
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else
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{
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UE_LOG( LogDerivedDataCache, Warning, TEXT("Unable to find inner node %s for KeyLength node %s. KeyLength node will not be created."), *InnerName, NodeName );
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}
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return KeyLengthNode;
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}
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|
/**
|
|
* Creates Hierarchical interface from ini settings.
|
|
*
|
|
* @param NodeName Node name.
|
|
* @param Entry Node definition.
|
|
* @param IniFilename ini filename.
|
|
* @param IniSection ini section containing graph definition
|
|
* @param InParsedNodes map of nodes and their names which have already been parsed
|
|
* @return Hierarchical backend interface instance or NULL if unsuccessfull
|
|
*/
|
|
FDerivedDataBackendInterface* ParseHierarchicalCache( const TCHAR* NodeName, const TCHAR* Entry, const FString& IniFilename, const TCHAR* IniSection, TMap<FString, FDerivedDataBackendInterface*>& InParsedNodes )
|
|
{
|
|
const TCHAR* InnerMatch = TEXT("Inner=");
|
|
const int32 InnerMatchLength = FCString::Strlen( InnerMatch );
|
|
|
|
TArray< FDerivedDataBackendInterface* > InnerNodes;
|
|
FString InnerName;
|
|
while ( FParse::Value( Entry, InnerMatch, InnerName ) )
|
|
{
|
|
// Check if the child has already been parsed
|
|
FDerivedDataBackendInterface** ParsedInnerNode = InParsedNodes.Find( InnerName );
|
|
if( ParsedInnerNode )
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Warning, TEXT("Inner node %s for hierarchical node %s already exists. Nodes can only be used once."), *InnerName, NodeName );
|
|
}
|
|
else
|
|
{
|
|
FDerivedDataBackendInterface* InnerNode = ParseNode( *InnerName, IniFilename, IniSection, InParsedNodes );
|
|
if( InnerNode )
|
|
{
|
|
InnerNodes.Add( InnerNode );
|
|
}
|
|
else
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Log, TEXT("Unable to find inner node %s for hierarchical cache %s."), *InnerName, NodeName );
|
|
}
|
|
}
|
|
|
|
// Move the Entry pointer forward so that we can find more children
|
|
Entry = FCString::Strifind( Entry, InnerMatch );
|
|
Entry += InnerMatchLength;
|
|
}
|
|
|
|
FDerivedDataBackendInterface* Hierarchy = NULL;
|
|
if( InnerNodes.Num() > 1 )
|
|
{
|
|
FHierarchicalDerivedDataBackend* HierarchyBackend = new FHierarchicalDerivedDataBackend( InnerNodes );
|
|
Hierarchy = HierarchyBackend;
|
|
if (HierarchicalWrapper == NULL)
|
|
{
|
|
HierarchicalWrapper = HierarchyBackend;
|
|
}
|
|
}
|
|
else if ( InnerNodes.Num() == 1 )
|
|
{
|
|
Hierarchy = InnerNodes[ 0 ];
|
|
InnerNodes.Empty();
|
|
}
|
|
else
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Warning, TEXT("Hierarchical cache %s has no inner backends and will not be created."), NodeName );
|
|
}
|
|
|
|
return Hierarchy;
|
|
}
|
|
|
|
/**
|
|
* Creates Filesystem data cache interface from ini settings.
|
|
*
|
|
* @param NodeName Node name.
|
|
* @param Entry Node definition.
|
|
* @return Filesystem data cache backend interface instance or NULL if unsuccessfull
|
|
*/
|
|
FDerivedDataBackendInterface* ParseDataCache( const TCHAR* NodeName, const TCHAR* Entry )
|
|
{
|
|
FDerivedDataBackendInterface* DataCache = NULL;
|
|
|
|
// Parse Path by default, it may be overwriten by EnvPathOverride
|
|
FString Path;
|
|
FParse::Value( Entry, TEXT("Path="), Path );
|
|
|
|
// Check the EnvPathOverride environment variable to allow persistent overriding of data cache path, eg for offsite workers.
|
|
FString EnvPathOverride;
|
|
if( FParse::Value( Entry, TEXT("EnvPathOverride="), EnvPathOverride ) )
|
|
{
|
|
FString FilesystemCachePathEnv = FPlatformMisc::GetEnvironmentVariable( *EnvPathOverride );
|
|
if( FilesystemCachePathEnv.Len() > 0 )
|
|
{
|
|
Path = FilesystemCachePathEnv;
|
|
UE_LOG( LogDerivedDataCache, Log, TEXT("Found environment variable %s=%s"), *EnvPathOverride, *Path );
|
|
}
|
|
}
|
|
|
|
if (!EnvPathOverride.IsEmpty())
|
|
{
|
|
FString DDCPath;
|
|
if (FPlatformMisc::GetStoredValue(TEXT("Epic Games"), TEXT("GlobalDataCachePath"), *EnvPathOverride, DDCPath))
|
|
{
|
|
if (DDCPath.Len() > 0)
|
|
{
|
|
Path = DDCPath;
|
|
UE_LOG( LogDerivedDataCache, Log, TEXT("Found registry key GlobalDataCachePath %s=%s"), *EnvPathOverride, *Path );
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check the CommandLineOverride argument to allow redirecting in build scripts
|
|
FString CommandLineOverride;
|
|
if( FParse::Value( Entry, TEXT("CommandLineOverride="), CommandLineOverride ) )
|
|
{
|
|
FString Value;
|
|
if (FParse::Value(FCommandLine::Get(), *(CommandLineOverride + TEXT("=")), Value))
|
|
{
|
|
Path = Value;
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Found command line override %s=%s"), *CommandLineOverride, *Path);
|
|
}
|
|
}
|
|
|
|
// Paths starting with a '?' are looked up from config
|
|
if (Path.StartsWith(TEXT("?")) && !GConfig->GetString(TEXT("DerivedDataCacheSettings"), *Path + 1, Path, GEngineIni))
|
|
{
|
|
Path.Empty();
|
|
}
|
|
|
|
// Allow the user to override it from the editor
|
|
FString EditorOverrideSetting;
|
|
if(FParse::Value(Entry, TEXT("EditorOverrideSetting="), EditorOverrideSetting))
|
|
{
|
|
FString Setting = GConfig->GetStr(TEXT("/Script/UnrealEd.EditorSettings"), *EditorOverrideSetting, GEditorSettingsIni);
|
|
if(Setting.Len() > 0)
|
|
{
|
|
FString SettingPath;
|
|
if(FParse::Value(*Setting, TEXT("Path="), SettingPath))
|
|
{
|
|
SettingPath = SettingPath.TrimQuotes();
|
|
if(SettingPath.Len() > 0)
|
|
{
|
|
Path = SettingPath;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if( !Path.Len() )
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Log, TEXT("%s data cache path not found in *engine.ini, will not use an %s cache."), NodeName, NodeName );
|
|
}
|
|
else if( Path == TEXT("None") )
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Log, TEXT("Disabling %s data cache - path set to 'None'."), NodeName );
|
|
}
|
|
else
|
|
{
|
|
FDerivedDataBackendInterface* InnerFileSystem = NULL;
|
|
|
|
// Try to set up the shared drive, allow user to correct any issues that may exist.
|
|
bool RetryOnFailure = false;
|
|
do
|
|
{
|
|
RetryOnFailure = false;
|
|
|
|
// Don't create the file system if shared data cache directory is not mounted
|
|
bool bShared = FCString::Stricmp(NodeName, TEXT("Shared")) == 0;
|
|
|
|
// parameters we read here from the ini file
|
|
FString WriteAccessLog;
|
|
bool bPromptIfMissing = false;
|
|
|
|
FParse::Value(Entry, TEXT("WriteAccessLog="), WriteAccessLog);
|
|
FParse::Bool(Entry, TEXT("PromptIfMissing="), bPromptIfMissing);
|
|
|
|
if (!bShared || IFileManager::Get().DirectoryExists(*Path))
|
|
{
|
|
InnerFileSystem = CacheStore::FileSystem::CreateFileSystemDerivedDataBackend(*Path, Entry, *WriteAccessLog);
|
|
}
|
|
|
|
if (InnerFileSystem)
|
|
{
|
|
bUsingSharedDDC |= bShared;
|
|
|
|
DataCache = InnerFileSystem;
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Using %s data cache path %s: %s"), NodeName, *Path, !InnerFileSystem->IsWritable() ? TEXT("ReadOnly") : TEXT("Writable"));
|
|
Directories.AddUnique(Path);
|
|
}
|
|
else
|
|
{
|
|
FString Message = FString::Printf(TEXT("%s data cache path (%s) is unavailable so cache will be disabled."), NodeName, *Path);
|
|
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("%s"), *Message);
|
|
|
|
// Give the user a chance to retry incase they need to connect a network drive or something.
|
|
if (bPromptIfMissing && !FApp::IsUnattended() && !IS_PROGRAM)
|
|
{
|
|
Message += FString::Printf(TEXT("\n\nRetry connection to %s?"), *Path);
|
|
EAppReturnType::Type MessageReturn = FPlatformMisc::MessageBoxExt(EAppMsgType::YesNo, *Message, TEXT("Could not access DDC"));
|
|
RetryOnFailure = MessageReturn == EAppReturnType::Yes;
|
|
}
|
|
}
|
|
} while (RetryOnFailure);
|
|
}
|
|
|
|
return DataCache;
|
|
}
|
|
|
|
/**
|
|
* Creates an S3 data cache interface.
|
|
*/
|
|
FDerivedDataBackendInterface* ParseS3Cache(const TCHAR* NodeName, const TCHAR* Entry)
|
|
{
|
|
#if WITH_S3_DDC_BACKEND
|
|
FString ManifestPath;
|
|
if (!FParse::Value(Entry, TEXT("Manifest="), ManifestPath))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Node %s does not specify 'Manifest'."), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
FString BaseUrl;
|
|
if (!FParse::Value(Entry, TEXT("BaseUrl="), BaseUrl))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Node %s does not specify 'BaseUrl'."), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
FString CanaryObjectKey;
|
|
FParse::Value(Entry, TEXT("Canary="), CanaryObjectKey);
|
|
|
|
FString Region;
|
|
if (!FParse::Value(Entry, TEXT("Region="), Region))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Node %s does not specify 'Region'."), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
// Check the EnvPathOverride environment variable to allow persistent overriding of data cache path, eg for offsite workers.
|
|
FString EnvPathOverride;
|
|
FString CachePath = FPaths::ProjectSavedDir() / TEXT("S3DDC");
|
|
if (FParse::Value(Entry, TEXT("EnvPathOverride="), EnvPathOverride))
|
|
{
|
|
FString FilesystemCachePathEnv = FPlatformMisc::GetEnvironmentVariable(*EnvPathOverride);
|
|
if (FilesystemCachePathEnv.Len() > 0)
|
|
{
|
|
if (FilesystemCachePathEnv == TEXT("None"))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Node %s disabled due to %s=None"), NodeName, *EnvPathOverride);
|
|
return nullptr;
|
|
}
|
|
else
|
|
{
|
|
CachePath = FilesystemCachePathEnv;
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Found environment variable %s=%s"), *EnvPathOverride, *CachePath);
|
|
}
|
|
}
|
|
|
|
if (!EnvPathOverride.IsEmpty())
|
|
{
|
|
FString DDCPath;
|
|
if (FPlatformMisc::GetStoredValue(TEXT("Epic Games"), TEXT("GlobalDataCachePath"), *EnvPathOverride, DDCPath))
|
|
{
|
|
if ( DDCPath.Len() > 0 )
|
|
{
|
|
CachePath = DDCPath;
|
|
UE_LOG( LogDerivedDataCache, Log, TEXT("Found registry key GlobalDataCachePath %s=%s"), *EnvPathOverride, *CachePath );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return new CacheStore::S3::FS3DerivedDataBackend(*ManifestPath, *BaseUrl, *Region, *CanaryObjectKey, *CachePath);
|
|
#else
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("S3 backend is not supported on the current platform."));
|
|
return nullptr;
|
|
#endif
|
|
}
|
|
|
|
void ParseHttpCacheParams(
|
|
const TCHAR* NodeName,
|
|
const TCHAR* Entry,
|
|
const FString& IniFilename,
|
|
const TCHAR* IniSection,
|
|
FString& Host,
|
|
FString& Namespace,
|
|
FString& OAuthProvider,
|
|
FString& OAuthClientId,
|
|
FString& OAuthSecret,
|
|
bool& bReadOnly)
|
|
{
|
|
FString ServerId;
|
|
if (FParse::Value(Entry, TEXT("ServerID="), ServerId))
|
|
{
|
|
FString ServerEntry;
|
|
const TCHAR* ServerSection = TEXT("HordeStorageServers");
|
|
if (GConfig->GetString(ServerSection, *ServerId, ServerEntry, IniFilename))
|
|
{
|
|
ParseHttpCacheParams(NodeName, *ServerEntry, IniFilename, IniSection, Host, Namespace, OAuthProvider, OAuthClientId, OAuthSecret, bReadOnly);
|
|
}
|
|
else
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("Node %s is using ServerID=%s which was not found in [%s]"), NodeName, *ServerId, ServerSection);
|
|
}
|
|
}
|
|
|
|
FParse::Value(Entry, TEXT("Host="), Host);
|
|
|
|
FString EnvHostOverride;
|
|
if (FParse::Value(Entry, TEXT("EnvHostOverride="), EnvHostOverride))
|
|
{
|
|
FString HostEnv = FPlatformMisc::GetEnvironmentVariable(*EnvHostOverride);
|
|
if (!HostEnv.IsEmpty())
|
|
{
|
|
Host = HostEnv;
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Node %s found environment variable for Host %s=%s"), NodeName, *EnvHostOverride, *Host);
|
|
}
|
|
}
|
|
|
|
FString CommandLineOverride;
|
|
if (FParse::Value(Entry, TEXT("CommandLineHostOverride="), CommandLineOverride))
|
|
{
|
|
if (FParse::Value(FCommandLine::Get(), *(CommandLineOverride + TEXT("=")), Host))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Node %s found command line override for Host %s=%s"), NodeName, *CommandLineOverride, *Host);
|
|
}
|
|
}
|
|
|
|
FParse::Value(Entry, TEXT("Namespace="), Namespace);
|
|
FParse::Value(Entry, TEXT("OAuthProvider="), OAuthProvider);
|
|
FParse::Value(Entry, TEXT("OAuthClientId="), OAuthClientId);
|
|
FParse::Value(Entry, TEXT("OAuthSecret="), OAuthSecret);
|
|
FParse::Bool(Entry, TEXT("ReadOnly="), bReadOnly);
|
|
}
|
|
|
|
/**
|
|
* Creates a HTTP data cache interface.
|
|
*/
|
|
FDerivedDataBackendInterface* ParseHttpCache(
|
|
const TCHAR* NodeName,
|
|
const TCHAR* Entry,
|
|
const FString& IniFilename,
|
|
const TCHAR* IniSection)
|
|
{
|
|
#if WITH_HTTP_DDC_BACKEND
|
|
FString Host;
|
|
FString Namespace;
|
|
FString OAuthProvider;
|
|
FString OAuthClientId;
|
|
FString OAuthSecret;
|
|
bool bReadOnly = false;
|
|
|
|
ParseHttpCacheParams(NodeName, Entry, IniFilename, IniSection, Host, Namespace, OAuthProvider, OAuthClientId, OAuthSecret, bReadOnly);
|
|
|
|
if (Host.IsEmpty())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Node %s does not specify 'Host'"), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
if (Host == TEXT("None"))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Node %s is disabled because Host is set to 'None'"), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
if (Namespace.IsEmpty())
|
|
{
|
|
Namespace = FApp::GetProjectName();
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("Node %s does not specify 'Namespace', falling back to '%s'"), NodeName, *Namespace);
|
|
}
|
|
|
|
if (OAuthProvider.IsEmpty())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Node %s does not specify 'OAuthProvider'"), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
if (OAuthClientId.IsEmpty())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Node %s does not specify 'OAuthClientId'"), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
if (OAuthSecret.IsEmpty())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Node %s does not specify 'OAuthSecret'"), NodeName);
|
|
return nullptr;
|
|
}
|
|
|
|
FDerivedDataBackendInterface::ESpeedClass ForceSpeedClass = FDerivedDataBackendInterface::ESpeedClass::Unknown;
|
|
FString ForceSpeedClassValue;
|
|
if (FParse::Value(FCommandLine::Get(), TEXT("HttpForceSpeedClass="), ForceSpeedClassValue))
|
|
{
|
|
if (ForceSpeedClassValue == TEXT("Slow"))
|
|
{
|
|
ForceSpeedClass = FDerivedDataBackendInterface::ESpeedClass::Slow;
|
|
}
|
|
else if (ForceSpeedClassValue == TEXT("Ok"))
|
|
{
|
|
ForceSpeedClass = FDerivedDataBackendInterface::ESpeedClass::Ok;
|
|
}
|
|
else if (ForceSpeedClassValue == TEXT("Fast"))
|
|
{
|
|
ForceSpeedClass = FDerivedDataBackendInterface::ESpeedClass::Fast;
|
|
}
|
|
else if (ForceSpeedClassValue == TEXT("Local"))
|
|
{
|
|
ForceSpeedClass = FDerivedDataBackendInterface::ESpeedClass::Local;
|
|
}
|
|
else
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("Node %s found unknown speed class override HttpForceSpeedClass=%s"), NodeName, *ForceSpeedClassValue);
|
|
}
|
|
}
|
|
|
|
FHttpDerivedDataBackend* Backend = new FHttpDerivedDataBackend(*Host, *Namespace, *OAuthProvider, *OAuthClientId, *OAuthSecret, bReadOnly);
|
|
|
|
if (ForceSpeedClass != FDerivedDataBackendInterface::ESpeedClass::Unknown)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Node %s found speed class override ForceSpeedClass=%s"), NodeName, *ForceSpeedClassValue);
|
|
Backend->SetSpeedClass(ForceSpeedClass);
|
|
}
|
|
|
|
if (!Backend->IsUsable())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("Node %s could not contact the service (%s), will not use it"), NodeName, *Host);
|
|
delete Backend;
|
|
return nullptr;
|
|
}
|
|
return Backend;
|
|
#else
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("HTTP backend is not yet supported in the current build configuration."));
|
|
return nullptr;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Creates a Zen structured data cache interface
|
|
*/
|
|
FDerivedDataBackendInterface* ParseZenCache(const TCHAR* NodeName, const TCHAR* Entry)
|
|
{
|
|
#if WITH_ZEN_DDC_BACKEND
|
|
FString ServiceUrl;
|
|
FParse::Value(Entry, TEXT("Host="), ServiceUrl);
|
|
|
|
FString Namespace;
|
|
if (!FParse::Value(Entry, TEXT("Namespace="), Namespace))
|
|
{
|
|
Namespace = FApp::GetProjectName();
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("Node %s does not specify 'Namespace', falling back to '%s'"), NodeName, *Namespace);
|
|
}
|
|
|
|
FZenDerivedDataBackend* backend = new FZenDerivedDataBackend(*ServiceUrl, *Namespace);
|
|
if (!backend->IsUsable())
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("%s could not contact the service (%s), will not use it."), NodeName, *backend->GetName());
|
|
delete backend;
|
|
return nullptr;
|
|
}
|
|
return backend;
|
|
#else
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("Zen backend is not yet supported in the current build configuration."));
|
|
return nullptr;
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Creates Boot data cache interface from ini settings.
|
|
*
|
|
* @param NodeName Node name.
|
|
* @param Entry Node definition.
|
|
* @param OutFilename filename specified for the cache
|
|
* @return Boot data cache backend interface instance or NULL if unsuccessful
|
|
*/
|
|
FFileBackedDerivedDataBackend* ParseBootCache( const TCHAR* NodeName, const TCHAR* Entry, FString& OutFilename )
|
|
{
|
|
FMemoryDerivedDataBackend* Cache = NULL;
|
|
|
|
// Only allow boot cache with the editor. We don't want other tools and utilities (eg. SCW) writing to the same file.
|
|
#if WITH_EDITOR
|
|
FString Filename;
|
|
int64 MaxCacheSize = -1; // in MB
|
|
const int64 MaxSupportedCacheSize = 2048; // 2GB
|
|
|
|
FParse::Value( Entry, TEXT("MaxCacheSize="), MaxCacheSize);
|
|
FParse::Value( Entry, TEXT("Filename="), Filename );
|
|
if ( !Filename.Len() )
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Warning, TEXT("FDerivedDataBackendGraph: %s filename not found in *engine.ini, will not use %s cache."), NodeName, NodeName );
|
|
}
|
|
else
|
|
{
|
|
// make sure MaxCacheSize does not exceed 2GB
|
|
MaxCacheSize = FMath::Min(MaxCacheSize, MaxSupportedCacheSize);
|
|
|
|
UE_LOG( LogDerivedDataCache, Display, TEXT("Max Cache Size: %d MB"), MaxCacheSize);
|
|
Cache = new FMemoryDerivedDataBackend(TEXT("Boot"), MaxCacheSize * 1024 * 1024, true /* bCanBeDisabled */);
|
|
|
|
if( Cache && Filename.Len() )
|
|
{
|
|
OutFilename = Filename;
|
|
|
|
if (MaxCacheSize > 0 && IFileManager::Get().FileSize(*Filename) >= (MaxCacheSize * 1024 * 1024))
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Warning, TEXT("FDerivedDataBackendGraph: %s filename exceeds max size."), NodeName );
|
|
}
|
|
|
|
if (IFileManager::Get().FileSize(*Filename) < 0)
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Display, TEXT("Starting with empty %s cache"), NodeName );
|
|
}
|
|
else if( Cache->LoadCache( *Filename ) )
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Display, TEXT("Loaded %s cache: %s"), NodeName, *Filename );
|
|
}
|
|
else
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Warning, TEXT("Could not load %s cache: %s"), NodeName, *Filename );
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
return Cache;
|
|
}
|
|
|
|
/**
|
|
* Creates Memory data cache interface from ini settings.
|
|
*
|
|
* @param NodeName Node name.
|
|
* @param Entry Node definition.
|
|
* @return Memory data cache backend interface instance or NULL if unsuccessfull
|
|
*/
|
|
FMemoryDerivedDataBackend* ParseMemoryCache( const TCHAR* NodeName, const TCHAR* Entry )
|
|
{
|
|
FMemoryDerivedDataBackend* Cache = NULL;
|
|
FString Filename;
|
|
|
|
FParse::Value( Entry, TEXT("Filename="), Filename );
|
|
Cache = new FMemoryDerivedDataBackend(NodeName);
|
|
if( Cache && Filename.Len() )
|
|
{
|
|
if( Cache->LoadCache( *Filename ) )
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Display, TEXT("Loaded %s cache: %s"), NodeName, *Filename );
|
|
}
|
|
else
|
|
{
|
|
UE_LOG( LogDerivedDataCache, Warning, TEXT("Could not load %s cache: %s"), NodeName, *Filename );
|
|
}
|
|
}
|
|
|
|
return Cache;
|
|
}
|
|
|
|
virtual ~FDerivedDataBackendGraph()
|
|
{
|
|
RootCache = NULL;
|
|
DestroyCreatedBackends();
|
|
}
|
|
|
|
FDerivedDataBackendInterface& GetRoot() override
|
|
{
|
|
check(RootCache);
|
|
return *RootCache;
|
|
}
|
|
|
|
virtual void NotifyBootComplete() override
|
|
{
|
|
check(RootCache);
|
|
if (BootCache)
|
|
{
|
|
if( !FParse::Param( FCommandLine::Get(), TEXT("DDCNOSAVEBOOT") ) && !FParse::Param( FCommandLine::Get(), TEXT("Multiprocess") ) )
|
|
{
|
|
BootCache->SaveCache(*BootCacheFilename);
|
|
}
|
|
BootCache->Disable();
|
|
}
|
|
}
|
|
|
|
virtual void WaitForQuiescence(bool bShutdown) override
|
|
{
|
|
double StartTime = FPlatformTime::Seconds();
|
|
double LastPrint = StartTime;
|
|
|
|
if (bShutdown)
|
|
{
|
|
bIsShuttingDown.store(true, std::memory_order_relaxed);
|
|
}
|
|
|
|
while (AsyncCompletionCounter.GetValue())
|
|
{
|
|
check(AsyncCompletionCounter.GetValue() >= 0);
|
|
FPlatformProcess::Sleep(0.1f);
|
|
if (FPlatformTime::Seconds() - LastPrint > 5.0)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Waited %ds for derived data cache to finish..."), int32(FPlatformTime::Seconds() - StartTime));
|
|
LastPrint = FPlatformTime::Seconds();
|
|
}
|
|
}
|
|
if (bShutdown)
|
|
{
|
|
FString MergePaks;
|
|
if(WritePakCache && WritePakCache->IsWritable() && FParse::Value(FCommandLine::Get(), TEXT("MergePaks="), MergePaks))
|
|
{
|
|
TArray<FString> MergePakList;
|
|
MergePaks.FString::ParseIntoArray(MergePakList, TEXT("+"));
|
|
|
|
for(const FString& MergePakName : MergePakList)
|
|
{
|
|
CacheStore::PakFile::FPakFileDerivedDataBackend ReadPak(*FPaths::Combine(*FPaths::GetPath(WritePakFilename), *MergePakName), false);
|
|
WritePakCache->MergeCache(&ReadPak);
|
|
}
|
|
}
|
|
for (int32 ReadPakIndex = 0; ReadPakIndex < ReadPakCache.Num(); ReadPakIndex++)
|
|
{
|
|
ReadPakCache[ReadPakIndex]->Close();
|
|
}
|
|
if (WritePakCache && WritePakCache->IsWritable())
|
|
{
|
|
WritePakCache->Close();
|
|
if (!FPlatformFileManager::Get().GetPlatformFile().FileExists(*WritePakFilename))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Pak file %s was not produced?"), *WritePakFilename);
|
|
}
|
|
else
|
|
{
|
|
if (FPlatformFileManager::Get().GetPlatformFile().FileExists(*ReadPakFilename))
|
|
{
|
|
FPlatformFileManager::Get().GetPlatformFile().SetReadOnly(*ReadPakFilename, false);
|
|
if (!FPlatformFileManager::Get().GetPlatformFile().DeleteFile(*ReadPakFilename))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Could not delete the pak file %s to overwrite it with a new one."), *ReadPakFilename);
|
|
}
|
|
}
|
|
if (!CacheStore::PakFile::FPakFileDerivedDataBackend::SortAndCopy(WritePakFilename, ReadPakFilename))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Couldn't sort pak file (%s)"), *WritePakFilename);
|
|
}
|
|
else if (!IFileManager::Get().Delete(*WritePakFilename))
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Error, TEXT("Couldn't delete pak file (%s)"), *WritePakFilename);
|
|
}
|
|
else
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Display, TEXT("Sucessfully wrote %s."), *ReadPakFilename);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/** Get whether a shared cache is in use */
|
|
virtual bool GetUsingSharedDDC() const override
|
|
{
|
|
return bUsingSharedDDC;
|
|
}
|
|
|
|
virtual const TCHAR* GetGraphName() const override
|
|
{
|
|
return *GraphName;
|
|
}
|
|
|
|
virtual const TCHAR* GetDefaultGraphName() const override
|
|
{
|
|
return FApp::IsEngineInstalled() ? TEXT("InstalledDerivedDataBackendGraph") : TEXT("DerivedDataBackendGraph");
|
|
}
|
|
|
|
virtual void AddToAsyncCompletionCounter(int32 Addend) override
|
|
{
|
|
AsyncCompletionCounter.Add(Addend);
|
|
check(AsyncCompletionCounter.GetValue() >= 0);
|
|
}
|
|
|
|
virtual bool AnyAsyncRequestsRemaining() override
|
|
{
|
|
return AsyncCompletionCounter.GetValue() > 0;
|
|
}
|
|
|
|
virtual bool IsShuttingDown() override
|
|
{
|
|
return bIsShuttingDown.load(std::memory_order_relaxed);
|
|
}
|
|
|
|
virtual void GetDirectories(TArray<FString>& OutResults) override
|
|
{
|
|
OutResults = Directories;
|
|
}
|
|
|
|
static FORCEINLINE FDerivedDataBackendGraph& Get()
|
|
{
|
|
static FDerivedDataBackendGraph SingletonInstance;
|
|
return SingletonInstance;
|
|
}
|
|
|
|
virtual FDerivedDataBackendInterface* MountPakFile(const TCHAR* PakFilename) override
|
|
{
|
|
// Assumptions: there's at least one read-only pak backend in the hierarchy
|
|
// and its parent is a hierarchical backend.
|
|
CacheStore::PakFile::FPakFileDerivedDataBackend* ReadPak = NULL;
|
|
if (HierarchicalWrapper && FPlatformFileManager::Get().GetPlatformFile().FileExists(PakFilename))
|
|
{
|
|
ReadPak = new CacheStore::PakFile::FPakFileDerivedDataBackend(PakFilename, false);
|
|
|
|
HierarchicalWrapper->AddInnerBackend(ReadPak);
|
|
CreatedBackends.Add(ReadPak);
|
|
ReadPakCache.Add(ReadPak);
|
|
}
|
|
else
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Warning, TEXT("Failed to add %s read-only pak DDC backend. Make sure it exists and there's at least one hierarchical backend in the cache tree."), PakFilename);
|
|
}
|
|
|
|
return ReadPak;
|
|
}
|
|
|
|
virtual bool UnmountPakFile(const TCHAR* PakFilename) override
|
|
{
|
|
for (int PakIndex = 0; PakIndex < ReadPakCache.Num(); ++PakIndex)
|
|
{
|
|
CacheStore::PakFile::FPakFileDerivedDataBackend* ReadPak = ReadPakCache[PakIndex];
|
|
if (ReadPak->GetFilename() == PakFilename)
|
|
{
|
|
check(HierarchicalWrapper);
|
|
|
|
// Wait until all async requests are complete.
|
|
WaitForQuiescence(false);
|
|
|
|
HierarchicalWrapper->RemoveInnerBackend(ReadPak);
|
|
ReadPakCache.RemoveAt(PakIndex);
|
|
CreatedBackends.Remove(ReadPak);
|
|
ReadPak->Close();
|
|
delete ReadPak;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
virtual TSharedRef<FDerivedDataCacheStatsNode> GatherUsageStats() const override
|
|
{
|
|
if (RootCache)
|
|
{
|
|
return RootCache->GatherUsageStats();
|
|
}
|
|
|
|
return MakeShared<FDerivedDataCacheStatsNode>(TEXT(""), TEXT(""), /*bIsLocal*/ true);
|
|
}
|
|
|
|
private:
|
|
|
|
/** Delete all created backends in the reversed order they were created. */
|
|
void DestroyCreatedBackends()
|
|
{
|
|
for (int32 BackendIndex = CreatedBackends.Num() - 1; BackendIndex >= 0; --BackendIndex)
|
|
{
|
|
delete CreatedBackends[BackendIndex];
|
|
}
|
|
CreatedBackends.Empty();
|
|
}
|
|
|
|
/** MountPak console command handler. */
|
|
void UnmountPakCommandHandler(const TArray<FString>& Args)
|
|
{
|
|
if (Args.Num() < 1)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Usage: DDC.MountPak PakFilename"));
|
|
return;
|
|
}
|
|
UnmountPakFile(*Args[0]);
|
|
}
|
|
|
|
/** UnmountPak console command handler. */
|
|
void MountPakCommandHandler(const TArray<FString>& Args)
|
|
{
|
|
if (Args.Num() < 1)
|
|
{
|
|
UE_LOG(LogDerivedDataCache, Log, TEXT("Usage: DDC.UnmountPak PakFilename"));
|
|
return;
|
|
}
|
|
MountPakFile(*Args[0]);
|
|
}
|
|
|
|
FThreadSafeCounter AsyncCompletionCounter;
|
|
FString GraphName;
|
|
FString BootCacheFilename;
|
|
FString ReadPakFilename;
|
|
FString WritePakFilename;
|
|
|
|
/** Root of the graph */
|
|
FDerivedDataBackendInterface* RootCache;
|
|
|
|
/** References to all created backed interfaces */
|
|
TArray< FDerivedDataBackendInterface* > CreatedBackends;
|
|
|
|
/** Instances of backend interfaces which exist in only one copy */
|
|
FFileBackedDerivedDataBackend* BootCache;
|
|
CacheStore::PakFile::FPakFileDerivedDataBackend* WritePakCache;
|
|
FDerivedDataBackendInterface* AsyncPutWrapper;
|
|
FDerivedDataBackendInterface* KeyLengthWrapper;
|
|
FHierarchicalDerivedDataBackend* HierarchicalWrapper;
|
|
/** Support for multiple read only pak files. */
|
|
TArray<CacheStore::PakFile::FPakFileDerivedDataBackend*> ReadPakCache;
|
|
|
|
/** List of directories used by the DDC */
|
|
TArray<FString> Directories;
|
|
|
|
/** Whether a shared cache is in use */
|
|
bool bUsingSharedDDC;
|
|
|
|
/** Whether a shutdown is pending */
|
|
std::atomic<bool> bIsShuttingDown;
|
|
|
|
/** MountPak console command */
|
|
FAutoConsoleCommand MountPakCommand;
|
|
/** UnmountPak console command */
|
|
FAutoConsoleCommand UnountPakCommand;
|
|
};
|
|
|
|
} // UE::DerivedData::Backends
|
|
|
|
FDerivedDataBackend& FDerivedDataBackend::Get()
|
|
{
|
|
return UE::DerivedData::Backends::FDerivedDataBackendGraph::Get();
|
|
}
|
|
|
|
/**
|
|
* Parse debug options for the provided node name. Returns true if any options were specified
|
|
*/
|
|
bool FDerivedDataBackendInterface::FBackendDebugOptions::ParseFromTokens(FDerivedDataBackendInterface::FBackendDebugOptions& OutOptions, const TCHAR* InNodeName, const TCHAR* InInputTokens)
|
|
{
|
|
// check if the input stream has any ddc options for this node
|
|
FString PrefixKey = FString(TEXT("-ddc-")) + InNodeName;
|
|
|
|
if (FCString::Stristr(InInputTokens, *PrefixKey) == nullptr)
|
|
{
|
|
// check if it has any -ddc-all- args
|
|
PrefixKey = FString(TEXT("-ddc-all"));
|
|
|
|
if (FCString::Stristr(InInputTokens, *PrefixKey) == nullptr)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// turn -arg= into arg= for parsing
|
|
PrefixKey.RightChopInline(1);
|
|
|
|
/** types that can be set to ignored (-ddc-<name>-misstypes="foo+bar" etc) */
|
|
// look for -ddc-local-misstype=AnimSeq+Audio -ddc-shared-misstype=AnimSeq+Audio
|
|
FString ArgName = FString::Printf(TEXT("%s-misstypes="), *PrefixKey);
|
|
|
|
FString TempArg;
|
|
FParse::Value(InInputTokens, *ArgName, TempArg);
|
|
TempArg.ParseIntoArray(OutOptions.SimulateMissTypes, TEXT("+"), true);
|
|
|
|
// look for -ddc-local-missrate=, -ddc-shared-missrate= etc
|
|
ArgName = FString::Printf(TEXT("%s-missrate="), *PrefixKey);
|
|
int MissRate = 0;
|
|
FParse::Value(InInputTokens, *ArgName, OutOptions.RandomMissRate);
|
|
|
|
// look for -ddc-local-speed=, -ddc-shared-speed= etc
|
|
ArgName = FString::Printf(TEXT("%s-speed="), *PrefixKey);
|
|
if (FParse::Value(InInputTokens, *ArgName, TempArg))
|
|
{
|
|
if (!TempArg.IsEmpty())
|
|
{
|
|
LexFromString(OutOptions.SpeedClass, *TempArg);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Convenience function for backends that check if the key should be missed or not */
|
|
bool FDerivedDataBackendInterface::FBackendDebugOptions::ShouldSimulateMiss(const TCHAR* InCacheKey)
|
|
{
|
|
if (!SimulateMissTypes.IsEmpty())
|
|
{
|
|
FStringView TypeStr(InCacheKey);
|
|
TypeStr.LeftInline(TypeStr.Find(TEXT("_")));
|
|
if (SimulateMissTypes.Contains(TypeStr))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return RandomMissRate > 0 && FMath::RandHelper(100) < RandomMissRate;
|
|
}
|
|
|
|
/* Convenience function for backends that check if the key should be missed or not */
|
|
bool FDerivedDataBackendInterface::FBackendDebugOptions::ShouldSimulateMiss(const UE::DerivedData::FCacheKey& InCacheKey)
|
|
{
|
|
if (!SimulateMissTypes.IsEmpty())
|
|
{
|
|
TStringBuilder<256> Type;
|
|
Type << InCacheKey.Bucket;
|
|
if (SimulateMissTypes.Contains(Type.ToView()))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return RandomMissRate > 0 && FMath::RandHelper(100) < RandomMissRate;
|
|
}
|
|
|
|
#undef LOCTEXT_NAMESPACE
|