Socket: ✨ Send Chat Message Usecase

[psychology50]

작업 이유

• Authenticated user can send message using Socket API

작업 사항

1️⃣ Chat Message Sending Flow

{
   "content": "" // Required; max length: 5,000 characters
   "contentType": "" // Must match `MessageContentType` capitalization
}

• SEND /pub/chat.message.{chatRoomId}

2️⃣ Fix chat_message Redis Key Format

• Intended format: chatroom:{chatroom_id}:message:{message_id}, but was saved with {classpath}: prefix.
• Cause: @RedisHash lacked a specified value, defaulting to the classpath.

• Update successfully validated.

3️⃣ Refactor response message type to external message brocker

• Switched from entity to DTO for RabbitMQ serialization convenience.

리뷰어가 중점적으로 확인해야 하는 부분

• When Socket application is running, output Shutdown Signal: channel error; protocol method: #method<channel.close>(reply-code=406, reply-text=PRECONDITION_FAILED - inequivalent arg 'type' for exchange 'chat.exchange' in vhost '/': received 'direct' but current is 'topic', class-id=40, method-id=10) logs.
  • This results from an unassigned exchange type in @RabbitListener. 😅 (It's fixed now)

발견한 이슈

• Not thing.