API Gateway Websocket with Golang

infra Architecture

• Golang
• API Gateway(WebSocket)
• API Gateway(RestAPI)
• AWS lambda
• Terraform

Architecture

層の外側から順に

• src
  • lambda <- ここが実質のルート。
    • connection
    • disconnection
    • send_message
  • infrastructure
    • router
    • handlers
  • adapter
    • controllers
    • database
    • interfaces
    • protocols
  • usecase
    • interfaces <- controllerやrepositoryをDIする用
  • domain
    • models

init

• terraform/config.tfを設定
• terraform/variables.tfの通りにterraform/terraform.tfvarsを設定

cd app
make init

Build and Deploy

cd app
make deploy

Verification

use wscat

connection

stringParameterでtoken(Bearer), roomId, userId, ownerIdを取りたいので以下のようにパラメタつける

wscat -c wss://<api-id>.execute-api.<region>.amazonaws.com/<stage>?<params1=value1&params2=value2...>

send message

こっちはRestAPIなのでbodyに諸々情報詰める t POST https://qb5tb8b4n3.execute-api.ap-northeast-1.amazonaws.com/dev/send_message

リク

{
    "platformUserId": 111,
    "roomId": "XXXXXXXXXXXXX",
    "message": "hello world",
    "name": "dummy", 
    "imageUrl": "<cdnUrl>",
}