GS2-Realtime Deploy/CDK Reference

The template format used when creating stacks with GS2-Deploy, and implementation examples of template output in various languages using CDK

Entities

Resources targeted by the Deploy operation

Namespace

A Namespace allows multiple independent instances of the same service within a single project by separating data spaces and usage contexts. Each GS2 service is managed on a per-namespace basis. Even when using the same service, if the namespace differs, the data is treated as a completely independent data space.

Therefore, you must create a namespace before you can start using each service.

Request

Resource creation and update requests

Type

Condition

Required

Default

Value Limits

Description

name

string

✓

~ 128 chars

Namespace name

Namespace-specific name. Specified using alphanumeric characters, hyphens (-), underscores (_), and periods (.).

description

string

~ 1024 chars

Description

transactionSetting

TransactionSetting

Transaction Setting

Configuration for controlling how transactions are processed when executing realtime operations.

serverType

String Enum
enum {
“relay”
}

✓

Server Type

The type of game server to provision for real-time communication.
Currently supports “relay” mode, which provides a packet relay server that forwards messages between connected game clients.

Definition	Description
“relay”	Packet relay

serverSpec

String Enum
enum {
“realtime1.nano”
}

✓

Server Spec

The hardware specification tier for the provisioned game server.
Determines the compute resources (CPU, memory) allocated to each room’s server instance. Currently supports “realtime1.nano”.

Definition	Description
“realtime1.nano”	realtime1.nano

createNotification

NotificationSetting

Create Notification

Push notification settings triggered when a room finishes provisioning and is ready for connections.
Since room creation is asynchronous (IP address, port, and encryption key are assigned after a short delay), this notification informs clients that the room is ready to accept connections.

logSetting

LogSetting

Log Setting

Configuration for outputting realtime-related operation logs to GS2-Log.
When configured, actions such as room creation, connection events, and message relay activities are recorded for analysis and debugging.

GetAttr

Resource creation results that can be retrieved using the !GetAttr tag

	Type	Description
Item	Namespace	Namespace created

Implementation Example

Type: GS2::Realtime::Namespace
Properties:
  Name: namespace-0001
  Description: null
  TransactionSetting: null
  ServerType: relay
  ServerSpec: realtime1.nano
  CreateNotification: null
  LogSetting: 
    LoggingNamespaceId: grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001

import (
    "github.com/gs2io/gs2-golang-cdk/core"
    "github.com/gs2io/gs2-golang-cdk/realtime"
)


SampleStack := core.NewStack()
realtime.NewNamespace(
    &SampleStack,
    "namespace-0001",
    realtime.NamespaceServerTypeRelay,
    realtime.NamespaceServerSpecRealtime1Nano,
    realtime.NamespaceOptions{
        LogSetting: &core.LogSetting{
            LoggingNamespaceId: "grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001",
        },
    },
)

println(SampleStack.Yaml())  // Generate Template

class SampleStack extends \Gs2Cdk\Core\Model\Stack
{
    function __construct() {
        parent::__construct();
        new \Gs2Cdk\Realtime\Model\Namespace_(
            stack: $this,
            name: "namespace-0001",
            serverType: \Gs2Cdk\Realtime\Model\Enums\NamespaceServerType::RELAY,
            serverSpec: \Gs2Cdk\Realtime\Model\Enums\NamespaceServerSpec::REALTIME1_NANO,
            options: new \Gs2Cdk\Realtime\Model\Options\NamespaceOptions(
                logSetting: new \Gs2Cdk\Core\Model\LogSetting(
                    loggingNamespaceId: "grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001"
                )
            )
        );
    }
}

print((new SampleStack())->yaml());  // Generate Template

class SampleStack extends io.gs2.cdk.core.model.Stack
{
    public SampleStack() {
        super();
        new io.gs2.cdk.realtime.model.Namespace(
                this,
                "namespace-0001",
                io.gs2.cdk.realtime.model.enums.NamespaceServerType.RELAY,
                io.gs2.cdk.realtime.model.enums.NamespaceServerSpec.REALTIME1_NANO,
                new io.gs2.cdk.realtime.model.options.NamespaceOptions()
                        .withLogSetting(new io.gs2.cdk.core.model.LogSetting(
                            "grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001"
                        ))
        );
    }
}

System.out.println(new SampleStack().yaml());  // Generate Template

public class SampleStack : Gs2Cdk.Core.Model.Stack
{
    public SampleStack() {
        new Gs2Cdk.Gs2Realtime.Model.Namespace(
            stack: this,
            name: "namespace-0001",
            serverType: Gs2Cdk.Gs2Realtime.Model.Enums.NamespaceServerType.Relay,
            serverSpec: Gs2Cdk.Gs2Realtime.Model.Enums.NamespaceServerSpec.Realtime1Nano,
            options: new Gs2Cdk.Gs2Realtime.Model.Options.NamespaceOptions
            {
                logSetting = new Gs2Cdk.Core.Model.LogSetting(
                    loggingNamespaceId: "grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001"
                )
            }
        );
    }
}

Debug.Log(new SampleStack().Yaml());  // Generate Template

import core from "@/gs2cdk/core";
import realtime from "@/gs2cdk/realtime";

class SampleStack extends core.Stack
{
    public constructor() {
        super();
        new realtime.model.Namespace(
            this,
            "namespace-0001",
            realtime.model.NamespaceServerType.RELAY,
            realtime.model.NamespaceServerSpec.REALTIME1_NANO,
            {
                logSetting: new core.LogSetting(
                    "grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001"
                )
            }
        );
    }
}

console.log(new SampleStack().yaml());  // Generate Template

from gs2_cdk import Stack, core, realtime

class SampleStack(Stack):

    def __init__(self):
        super().__init__()
        realtime.Namespace(
            stack=self,
            name='namespace-0001',
            server_type=realtime.NamespaceServerType.RELAY,
            server_spec=realtime.NamespaceServerSpec.REALTIME1_NANO,
            options=realtime.NamespaceOptions(
                log_setting=core.LogSetting(
                    logging_namespace_id='grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001',
                ),
            ),
        )

print(SampleStack().yaml())  # Generate Template

TransactionSetting

Transaction Setting

Transaction Setting controls how transactions are executed, including their consistency, asynchronous processing, and conflict avoidance mechanisms. Combining features like AutoRun, AtomicCommit, asynchronous execution using GS2-Distributor, batch application of script results, and asynchronous Acquire Actions via GS2-JobQueue enables robust transaction management tailored to game logic.

	Type	Condition	Default	Value Limits	Description
enableAutoRun	bool		false		Whether to automatically execute issued transactions on the server side
enableAtomicCommit	bool	{enableAutoRun} == true	false		Whether to commit the execution of transactions atomically * Applicable only if enableAutoRun is true
transactionUseDistributor	bool	{enableAtomicCommit} == true	false		Whether to execute transactions asynchronously * Applicable only if enableAtomicCommit is true
commitScriptResultInUseDistributor	bool	{transactionUseDistributor} == true	false		Whether to execute the commit processing of the script result asynchronously * Applicable only if transactionUseDistributor is true
acquireActionUseJobQueue	bool	{enableAtomicCommit} == true	false		Whether to use GS2-JobQueue to execute the acquire action * Applicable only if enableAtomicCommit is true
distributorNamespaceId	string		“grn:gs2:{region}:{ownerId}:distributor:default”	~ 1024 chars	GS2-Distributor Namespace GRN used to execute transactions
queueNamespaceId	string		“grn:gs2:{region}:{ownerId}:queue:default”	~ 1024 chars	GS2-JobQueue Namespace GRN used to execute transactions

NotificationSetting

Push Notification Settings

This is a setting for sending push notifications when an event occurs in a GS2 microservice. The push notification here refers to the processing via the WebSocket interface provided by GS2-Gateway, and is different from the push notification of a smartphone. For example, when a matchmaking is completed or a friend request is received, the GS2-Gateway can send a push notification via the WebSocket interface, and the game client can detect the change of the state.

GS2-Gateway’s push notifications can be used to forward notifications to mobile push notification services when the destination device is offline. By properly utilizing mobile push notifications, you can implement a flow in which players are notified even if they exit the game during matchmaking and later return to it.

Type

Condition

Required

Default

Value Limits

Description

gatewayNamespaceId

string

“grn:gs2:{region}:{ownerId}:gateway:default”

~ 1024 chars

GS2-Gateway namespace to use for push notifications

Specify the GS2-Gateway namespace ID in GRN format starting with “grn:gs2:”.

enableTransferMobileNotification

bool?

false

Whether to forward the notification as a mobile push notification

When this notification is sent and the destination device is offline, specify whether to forward it as a mobile push notification.

sound

string

{enableTransferMobileNotification} == true

~ 1024 chars

Sound file name to be used for mobile push notifications

The sound file name specified here is used when sending mobile push notifications, and you can send notifications with a special sound.

* Applicable only if enableTransferMobileNotification is true

enable

String Enum
enum {
“Enabled”,
“Disabled”
}

“Enabled”

Whether to enable push notifications

Definition	Description
“Enabled”	Enabled
“Disabled”	Disabled

LogSetting

Log Output Setting

Log Output Setting defines how log data is exported. This type holds the GS2-Log namespace identifier (Namespace ID) used to export log data. Specify the GS2-Log namespace where log data is collected and stored in the GRN format for the Log Namespace ID (loggingNamespaceId). Configuring this setting ensures that log data for API requests and responses occurring within the specified namespace is output to the target GS2-Log namespace. GS2-Log provides real-time logs that can be used for system monitoring, analysis, debugging, and other operational purposes.

	Type	Condition	Required	Default	Value Limits	Description
loggingNamespaceId	string		✓		~ 1024 chars	GS2-Log namespace GRN to output logs Must be specified in GRN format starting with “grn:gs2:”.