GS2-Deploy/CDK Reference of GS2-Friend

Template format used to create GS2-Deploy stacks and examples of template output implementation in various languages using CDK

Entities

Namespace

Namespace is a mechanism that allows multiple uses of the same service for different purposes within a single project. Basically, GS2 services have a layer called namespace, and different namespaces are treated as completely different data spaces, even for the same service.

Therefore, it is necessary to create a namespace before starting to use each service.

	Type	Require	Limitation	Description
name	string	✓	~ 128 chars	Namespace name
description	string		~ 1024 chars	Description
followScript	ScriptSetting			Script to run when followed
unfollowScript	ScriptSetting			Script to run when unfollowed
sendRequestScript	ScriptSetting			Script to run when a friend request is issued
cancelRequestScript	ScriptSetting			Script to execute when a friend request is canceled
acceptRequestScript	ScriptSetting			Script to run when a friend request is accepted
rejectRequestScript	ScriptSetting			Script to execute when a friend request is rejected
deleteFriendScript	ScriptSetting			Script to run when a friend is deleted
updateProfileScript	ScriptSetting			Script to run when you update your profile
followNotification	NotificationSetting			Push notification when you are followed
receiveRequestNotification	NotificationSetting	✓		Push notification when a friend request is received
cancelRequestNotification	NotificationSetting	✓		Push notification when a received friend request is canceled
acceptRequestNotification	NotificationSetting	✓		Push notification when a friend request is approved
rejectRequestNotification	NotificationSetting	✓		Push notification when a friend request is rejected
deleteFriendNotification	NotificationSetting	✓		Push notification when a friend is deleted
logSetting	LogSetting			Log output settings

GetAttr

Generation results of resources that can be obtained with the !GetAttr tag

	Type	Description
Item	Namespace	Namespace created

Implementation Example

Type: GS2::Friend::Namespace
Properties:
  Name: namespace-0001
  Description: null
  FollowScript: null
  UnfollowScript: null
  SendRequestScript: null
  CancelRequestScript: null
  AcceptRequestScript: null
  RejectRequestScript: null
  DeleteFriendScript: null
  UpdateProfileScript: null
  FollowNotification: null
  ReceiveRequestNotification: null
  CancelRequestNotification: null
  AcceptRequestNotification: null
  RejectRequestNotification: null
  DeleteFriendNotification: 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/friend"
    "github.com/openlyinc/pointy"
)

SampleStack := core.NewStack()
friend.NewNamespace(
    &SampleStack,
    "namespace-0001",
    friend.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\Friend\Model\Namespace_(
            stack: $this,
            name: "namespace-0001",
            options: new \Gs2Cdk\Friend\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.friend.model.Namespace(
                this,
                "namespace-0001",
                new io.gs2.cdk.friend.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.Gs2Friend.Model.Namespace(
            stack: this,
            name: "namespace-0001",
            options: new Gs2Cdk.Gs2Friend.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 friend from "@/gs2cdk/friend";

class SampleStack extends core.Stack
{
    public constructor() {
        super();
        new friend.model.Namespace(
            this,
            "namespace-0001",
            {
                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, friend

class SampleStack(Stack):

    def __init__(self):
        super().__init__()
        friend.Namespace(
            stack=self,
            name='namespace-0001',
            options=friend.NamespaceOptions(
                log_setting=core.LogSetting(
                    logging_namespace_id='grn:gs2:ap-northeast-1:YourOwnerId:log:namespace-0001',
                ),
            ),
        )

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

ScriptSetting

Script settings

In GS2, you can associate custom scripts with microservice events and execute them. This model holds the settings for triggering script execution.

There are two main ways to execute a script: synchronous execution and asynchronous execution. Synchronous execution blocks processing until the script has finished executing. Instead, you can use the script execution result to stop the execution of the API or to tamper with the result of the API.

On the other hand, asynchronous execution does not block processing until the script has finished executing. Instead, you can use the script execution result to stop the execution of the API or to tamper with the result of the API. However, asynchronous execution does not block processing until the script has finished executing, so it is generally recommended to use asynchronous execution.

There are two types of asynchronous execution methods: GS2-Script and Amazon EventBridge. By using Amazon EventBridge, you can write processing in languages other than Lua.

	Type	Require	Default	Limitation	Description
triggerScriptId	string			~ 1024 chars	Script GRN
doneTriggerTargetType	enum { “none”, “gs2_script”, “aws” }	✓	“none”	~ 128 chars	Notification of Completion
doneTriggerScriptId	string	{doneTriggerTargetType} == “gs2_script”		~ 1024 chars	Script GRN
doneTriggerQueueNamespaceId	string	{doneTriggerTargetType} == “gs2_script”		~ 1024 chars	Namespace GRN

Enumeration type definition to specify as doneTriggerTargetType

Enumerator String Definition	Description
none	None
gs2_script	GS2-Script
aws	Amazon EventBridge

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 send additional processing to mobile push notifications when the destination device is offline. If you use mobile push notifications well, you may be able to realize a flow in which you can notify the player by using mobile push notifications even if you end the game during matchmaking and return to the game.

	Type	Require	Default	Limitation	Description
gatewayNamespaceId	string	✓	“grn:gs2:{region}:{ownerId}:gateway:default”	~ 1024 chars	GS2-Gateway namespace to use for push notifications
enableTransferMobileNotification	bool?		false		Forwarding to mobile push notification
sound	string	{enableTransferMobileNotification} == true		~ 1024 chars	Sound file name to be used for mobile push notifications

LogSetting

Log setting

This type manages log output settings. This type holds the identifier of the log namespace used to output log data. The log namespace ID specifies the GS2-Log namespace to aggregate and store the log data. Through this setting, API request and response log data under this namespace will be output to the target GS2-Log. GS2-Log provides logs in real time, which can be used for system monitoring, analysis, debugging, etc.

	Type	Require	Default	Limitation	Description
loggingNamespaceId	string	✓		~ 1024 chars	Namespace GRN