API Reference of GS2-Inbox SDK for Game Engine

Model

EzMessage

Message

Message data delivered to a message box prepared for each game player.

Messages have an open status and can also have a stamp sheet attached. Messages can be set to expire, and messages that expire are automatically deleted regardless of whether they are unread or read after opening. Messages will be deleted even if you have not received the attached reward.

TypeRequireDefaultLimitationDescription
messageIdstring~ 1024 charsMessage GRN
namestringUUID~ 36 charsMessage Name
metadatastring~ 4096 charsMetadata corresponding to the content of the message
isReadboolfalseRead
readAcquireActionsList<EzAcquireAction>[]~ 100 itemsObtain actions to be performed upon opening
receivedAtlongDatetime of creation
readAtlong0Read date and time
expiresAtlongDatetime of ttl

EzConfig

Configration

Set values to be applied to stamp sheet variables

TypeRequireDefaultLimitationDescription
keystring~ 64 charsName
valuestring~ 51200 charsValue

EzAcquireAction

Acquire Action

TypeRequireDefaultLimitationDescription
actionenum [
"Gs2AdReward:AcquirePointByUserId",
"Gs2Dictionary:AddEntriesByUserId",
"Gs2Enchant:ReDrawBalanceParameterStatusByUserId",
"Gs2Enchant:SetBalanceParameterStatusByUserId",
"Gs2Enchant:ReDrawRarityParameterStatusByUserId",
"Gs2Enchant:AddRarityParameterStatusByUserId",
"Gs2Enchant:SetRarityParameterStatusByUserId",
"Gs2Enhance:DirectEnhanceByUserId",
"Gs2Enhance:UnleashByUserId",
"Gs2Enhance:CreateProgressByUserId",
"Gs2Exchange:ExchangeByUserId",
"Gs2Exchange:IncrementalExchangeByUserId",
"Gs2Exchange:UnlockIncrementalExchangeByUserId",
"Gs2Exchange:CreateAwaitByUserId",
"Gs2Exchange:SkipByUserId",
"Gs2Experience:AddExperienceByUserId",
"Gs2Experience:SetExperienceByUserId",
"Gs2Experience:AddRankCapByUserId",
"Gs2Experience:SetRankCapByUserId",
"Gs2Experience:MultiplyAcquireActionsByUserId",
"Gs2Formation:AddMoldCapacityByUserId",
"Gs2Formation:SetMoldCapacityByUserId",
"Gs2Formation:AcquireActionsToFormProperties",
"Gs2Formation:SetFormByUserId",
"Gs2Formation:AcquireActionsToPropertyFormProperties",
"Gs2Grade:AddGradeByUserId",
"Gs2Grade:ApplyRankCapByUserId",
"Gs2Grade:MultiplyAcquireActionsByUserId",
"Gs2Guild:IncreaseMaximumCurrentMaximumMemberCountByGuildName",
"Gs2Guild:SetMaximumCurrentMaximumMemberCountByGuildName",
"Gs2Idle:IncreaseMaximumIdleMinutesByUserId",
"Gs2Idle:SetMaximumIdleMinutesByUserId",
"Gs2Idle:ReceiveByUserId",
"Gs2Inbox:SendMessageByUserId",
"Gs2Inventory:AddCapacityByUserId",
"Gs2Inventory:SetCapacityByUserId",
"Gs2Inventory:AcquireItemSetByUserId",
"Gs2Inventory:AcquireItemSetWithGradeByUserId",
"Gs2Inventory:AddReferenceOfByUserId",
"Gs2Inventory:DeleteReferenceOfByUserId",
"Gs2Inventory:AcquireSimpleItemsByUserId",
"Gs2Inventory:SetSimpleItemsByUserId",
"Gs2Inventory:AcquireBigItemByUserId",
"Gs2Inventory:SetBigItemByUserId",
"Gs2JobQueue:PushByUserId",
"Gs2Limit:CountDownByUserId",
"Gs2Limit:DeleteCounterByUserId",
"Gs2LoginReward:DeleteReceiveStatusByUserId",
"Gs2LoginReward:UnmarkReceivedByUserId",
"Gs2Lottery:DrawByUserId",
"Gs2Lottery:ResetBoxByUserId",
"Gs2Mission:RevertReceiveByUserId",
"Gs2Mission:IncreaseCounterByUserId",
"Gs2Mission:SetCounterByUserId",
"Gs2Money:DepositByUserId",
"Gs2Money:RevertRecordReceipt",
"Gs2Money2:DepositByUserId",
"Gs2Quest:CreateProgressByUserId",
"Gs2Schedule:TriggerByUserId",
"Gs2SerialKey:RevertUseByUserId",
"Gs2Showcase:DecrementPurchaseCountByUserId",
"Gs2Showcase:ForceReDrawByUserId",
"Gs2SkillTree:MarkReleaseByUserId",
"Gs2Stamina:RecoverStaminaByUserId",
"Gs2Stamina:RaiseMaxValueByUserId",
"Gs2Stamina:SetMaxValueByUserId",
"Gs2Stamina:SetRecoverIntervalByUserId",
"Gs2Stamina:SetRecoverValueByUserId",
"Gs2StateMachine:StartStateMachineByUserId",
]
~ 128 charsTypes of actions to be performed in the stamp sheet
requeststring~ 1048576 charsJSON of request

Methods

delete

Deleting a message

If you do not have the option in your gift box settings to automatically delete messages when they are opened, you must use this API to explicitly delete messages.

Request

TypeRequireDefaultLimitationDescription
namespaceNamestring~ 128 charsNamespace name
accessTokenstring~ 128 charsUser Id
messageNamestringUUID~ 36 charsMessage Name

Result

TypeDescription
itemEzMessageDeleted Message

Implementation Example

    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    var result = await domain.DeleteAsync(
    );
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    var future = domain.DeleteFuture(
    );
    yield return future;
    if (future.Error != null)
    {
        onError.Invoke(future.Error, null);
        yield break;
    }
    const auto Domain = Gs2->Inbox->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Message(
        "message-0001" // messageName
    );
    const auto Future = Domain->Delete(
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }
    const auto Result = Future->GetTask().Result();

get

Get Message

Request

TypeRequireDefaultLimitationDescription
namespaceNamestring~ 128 charsNamespace name
messageNamestringUUID~ 36 charsMessage Name
accessTokenstring~ 128 charsUser Id

Result

TypeDescription
itemEzMessageMessage

Implementation Example

    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    var item = await domain.ModelAsync();
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;
    const auto Domain = Gs2->Inbox->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Message(
        "message-0001" // messageName
    );
    const auto Future = Domain->Model();
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }
Value change event handling
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    
    // Start event handling
    var callbackId = domain.Subscribe(
        value => {
            // Called when the value changes
            // The "value" is passed the value after the change.
        }
    );

    // Stop event handling
    domain.Unsubscribe(callbackId);
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    var future = domain.Model();
    yield return future;
    var item = future.Result;
    const auto Domain = Gs2->Inbox->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Message(
        "message-0001" // messageName
    );
    
    // Start event handling
    const auto CallbackId = Domain->Subscribe(
        [](TSharedPtr<Gs2::Inbox::Model::FMessage> value) {
            // Called when the value changes
            // The "value" is passed the value after the change.
        }
    );

    // Stop event handling
    Domain->Unsubscribe(CallbackId);

list

Get list of messages received in the gift box

Messages can be retrieved in order from the most recent message.

Request

TypeRequireDefaultLimitationDescription
namespaceNamestring~ 128 charsNamespace name
accessTokenstring~ 128 charsUser Id
isReadboolRead
pageTokenstring~ 1024 charsToken specifying the position from which to start acquiring data
limitint301 ~ 1000Number of data acquired

Result

TypeDescription
itemsList<EzMessage>List of Message
nextPageTokenstringPage token to retrieve the rest of the listing

Implementation Example

    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    );
    var items = await domain.MessagesAsync(
    ).ToListAsync();
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    );
    var it = domain.Messages(
    );
    List<EzMessage> items = new List<EzMessage>();
    while (it.HasNext())
    {
        yield return it.Next();
        if (it.Error != null)
        {
            onError.Invoke(it.Error, null);
            break;
        }
        if (it.Current != null)
        {
            items.Add(it.Current);
        }
        else
        {
            break;
        }
    }
    const auto Domain = Gs2->Inbox->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    );
    const auto It = Domain->Messages(
    );
    TArray<Gs2::UE5::Inbox::Model::FEzMessagePtr> Result;
    for (auto Item : *It)
    {
        if (Item.IsError())
        {
            return false;
        }
        Result.Add(Item.Current());
    }
Value change event handling
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    );
    
    // Start event handling
    var callbackId = domain.SubscribeMessages(
        () => {
            // Called when an element of the list changes.
        }
    );

    // Stop event handling
    domain.UnsubscribeMessages(callbackId);
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    );
    var it = domain.Messages(
    );
    List<EzMessage> items = new List<EzMessage>();
    while (it.HasNext())
    {
        yield return it.Next();
        if (it.Error != null)
        {
            onError.Invoke(it.Error, null);
            break;
        }
        if (it.Current != null)
        {
            items.Add(it.Current);
        }
        else
        {
            break;
        }
    }
    const auto Domain = Gs2->Inbox->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    );
    
    // Start event handling
    const auto CallbackId = Domain->SubscribeMessages(
        []() {
            // Called when an element of the list changes.
        }
    );

    // Stop event handling
    Domain->UnsubscribeMessages(CallbackId);

read

Read the message

Request

TypeRequireDefaultLimitationDescription
namespaceNamestring~ 128 charsNamespace name
messageNamestringUUID~ 36 charsMessage Name
accessTokenstring~ 128 charsUser Id

Result

TypeDescription
itemEzMessageMessage
transactionIdstringTransaction ID of the stamp sheet issued
stampSheetstringStamp sheet
stampSheetEncryptionKeyIdstringCryptographic key GRN used for stamp sheet signature calculations
autoRunStampSheetboolIs stamp sheet auto-execution enabled?

Error

Special exceptions are defined in this API. GS2-SDK for GameEngine provides specialized exceptions derived from general exceptions to facilitate handling of errors that may need to be handled in games. Please refer to the documentation here for more information on common error types and handling methods.

TypeBase TypeDescription
MessageExpiredExceptionNotFoundExceptionMessage has expired

Implementation Example

try {
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    var result = await domain.ReadAsync(
    );
} catch(Gs2.Gs2Inbox.Exception.MessageExpired e) {
    // Message has expired
}
    // New Experience ではスタンプシートはSDKレベルで自動的に実行されます。
    // エラーが発生すると TransactionException がスローされます。
    // TransactionException::Retry() でリトライが可能です。
    // In New Experience, stamp sheets are automatically executed at the SDK level.
    // If an error occurs, a TransactionException is thrown.
    // you can retry with TransactionException::Retry().
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    ).Message(
        messageName: "message-0001"
    );
    var future = domain.ReadFuture(
    );
    yield return future;
    if (future.Error != null)
    {
        if (future.Error is Gs2.Gs2Inbox.Exception.MessageExpiredException)
        {
            // Message has expired
        }
        onError.Invoke(future.Error, null);
        yield break;
    }
    // New Experience ではスタンプシートはSDKレベルで自動的に実行されます。
    // エラーが発生すると TransactionException がスローされます。
    // TransactionException::Retry() でリトライが可能です。
    // In New Experience, stamp sheets are automatically executed at the SDK level.
    // If an error occurs, a TransactionException is thrown.
    // you can retry with TransactionException::Retry().
    const auto Domain = Gs2->Inbox->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    )->Message(
        "message-0001" // messageName
    );
    const auto Future = Domain->Read(
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        auto e = Future->GetTask().Error();
        if (e->IsChildOf(Gs2::Inbox::Error::FMessageExpiredError::Class))
        {
            // Message has expired
        }
        return false;
    }

receiveGlobalMessage

Receive global messages

Request

TypeRequireDefaultLimitationDescription
namespaceNamestring~ 128 charsNamespace name
accessTokenstring~ 128 charsUser Id

Result

TypeDescription
itemList<EzMessage>List of received messages

Implementation Example

    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    );
    var result = await domain.ReceiveGlobalMessageAsync(
    );
    var item = await result.ModelAsync();
    var domain = gs2.Inbox.Namespace(
        namespaceName: "namespace-0001"
    ).Me(
        gameSession: GameSession
    );
    var future = domain.ReceiveGlobalMessageFuture(
    );
    yield return future;
    if (future.Error != null)
    {
        onError.Invoke(future.Error, null);
        yield break;
    }
    var future2 = future.Result.Model();
    yield return future2;
    if (future2.Error != null)
    {
        onError.Invoke(future2.Error, null);
        yield break;
    }
    var result = future2.Result;
    const auto Domain = Gs2->Inbox->Namespace(
        "namespace-0001" // namespaceName
    )->Me(
        GameSession
    );
    const auto Future = Domain->ReceiveGlobalMessage(
    );
    Future->StartSynchronousTask();
    if (Future->GetTask().IsError())
    {
        return false;
    }

    // obtain changed values / result values
    const auto Future2 = Future->GetTask().Result()->Model();
    Future2->StartSynchronousTask();
    if (Future2->GetTask().IsError())
    {
        return Future2->GetTask().Error();
    }
    const auto Result = Future2->GetTask().Result();

Event Handler

OnReceiveNotification

Notification used when a message is received

NameTypeDescription
namespaceNamestringNamespace name
userIdstringUser Id
messageNamestringMessage Name

Implementation Example

    gs2.Inbox.OnReceiveNotification += notification =>
    {
        var namespaceName = notification.NamespaceName;
        var userId = notification.UserId;
        var messageName = notification.MessageName;
    };
    gs2.Inbox.OnReceiveNotification += notification =>
    {
        var namespaceName = notification.NamespaceName;
        var userId = notification.UserId;
        var messageName = notification.MessageName;
    };
    Gs2->Inbox->OnReceiveNotification().AddLambda([](const auto Notification)
    {
        const auto NamespaceName = Notification->NamespaceNameValue;
        const auto UserId = Notification->UserIdValue;
        const auto MessageName = Notification->MessageNameValue;
    });