75 lines
3.4 KiB
C++
75 lines
3.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "CoreMinimal.h"
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#include "IMessageContext.h"
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#include "IMessageSubscription.h"
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#include "IMessageAttachment.h"
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#include "IMessageInterceptor.h"
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#include "IAuthorizeMessageRecipients.h"
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#include "IMessageTracer.h"
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#include "IMessageBus.h"
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class FMessageRouter;
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class IMessageReceiver;
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class IMessageSender;
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/**
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* Implements a message bus.
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*/
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class FMessageBus
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: public TSharedFromThis<FMessageBus, ESPMode::ThreadSafe>
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, public IMessageBus
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{
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public:
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/**
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* Creates and initializes a new instance.
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*
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* @param InDebugName The debug name of this message bus.
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* @param InRecipientAuthorizer An optional recipient authorizer.
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*/
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FMessageBus(FString InName, const TSharedPtr<IAuthorizeMessageRecipients>& InRecipientAuthorizer);
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/** Virtual destructor. */
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virtual ~FMessageBus();
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public:
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//~ IMessageBus interface
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virtual void Forward(const TSharedRef<IMessageContext, ESPMode::ThreadSafe>& Context, const TArray<FMessageAddress>& Recipients, const FTimespan& Delay, const TSharedRef<IMessageSender, ESPMode::ThreadSafe>& Forwarder) override;
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virtual TSharedRef<IMessageTracer, ESPMode::ThreadSafe> GetTracer() override;
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virtual void Intercept(const TSharedRef<IMessageInterceptor, ESPMode::ThreadSafe>& Interceptor, const FTopLevelAssetPath& MessageType) override;
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virtual FOnMessageBusShutdown& OnShutdown() override;
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virtual void Publish(void* Message, UScriptStruct* TypeInfo, EMessageScope Scope, const TMap<FName, FString>& Annotations, const FTimespan& Delay, const FDateTime& Expiration, const TSharedRef<IMessageSender, ESPMode::ThreadSafe>& Publisher) override;
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virtual void Register(const FMessageAddress& Address, const TSharedRef<IMessageReceiver, ESPMode::ThreadSafe>& Recipient) override;
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virtual void Send(void* Message, UScriptStruct* TypeInfo, EMessageFlags Flags, const TMap<FName, FString>& Annotations, const TSharedPtr<IMessageAttachment, ESPMode::ThreadSafe>& Attachment, const TArray<FMessageAddress>& Recipients, const FTimespan& Delay, const FDateTime& Expiration, const TSharedRef<IMessageSender, ESPMode::ThreadSafe>& Sender) override;
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virtual void Shutdown() override;
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virtual TSharedPtr<IMessageSubscription, ESPMode::ThreadSafe> Subscribe(const TSharedRef<IMessageReceiver, ESPMode::ThreadSafe>& Subscriber, const FTopLevelAssetPath& MessageType, const FMessageScopeRange& ScopeRange) override;
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virtual void Unintercept(const TSharedRef<IMessageInterceptor, ESPMode::ThreadSafe>& Interceptor, const FTopLevelAssetPath& MessageType) override;
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virtual void Unregister(const FMessageAddress& Address) override;
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virtual void Unsubscribe(const TSharedRef<IMessageReceiver, ESPMode::ThreadSafe>& Subscriber, const FTopLevelAssetPath& MessageType) override;
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virtual void AddNotificationListener(const TSharedRef<IBusListener, ESPMode::ThreadSafe>& Listener) override;
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virtual void RemoveNotificationListener(const TSharedRef<IBusListener, ESPMode::ThreadSafe>& Listener) override;
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virtual const FString& GetName() const override;
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private:
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/** The message bus debugging name. */
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const FString Name;
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/** Holds the message router. */
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FMessageRouter* Router;
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/** Holds the message router thread. */
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FRunnableThread* RouterThread;
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/** Holds the recipient authorizer. */
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TSharedPtr<IAuthorizeMessageRecipients> RecipientAuthorizer;
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/** Holds bus shutdown delegate. */
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FOnMessageBusShutdown ShutdownDelegate;
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};
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