feat #168: 시그널링 서버 구현

Co-authored-by: hyoguoo <[email protected]>

src/main/java/ei/algobaroapi/domain/chat/controller/SignallingController.java

@@ -0,0 +1,66 @@
+package ei.algobaroapi.domain.chat.controller;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.messaging.handler.annotation.DestinationVariable;
+import org.springframework.messaging.handler.annotation.MessageMapping;
+import org.springframework.messaging.handler.annotation.Payload;
+import org.springframework.messaging.handler.annotation.SendTo;
+import org.springframework.web.bind.annotation.RestController;
+
+@Slf4j
+@RestController
+@RequiredArgsConstructor
+public class SignallingController {
+
+    @MessageMapping("/peer/offer/{camKey}/{roomShortUuid}")
+    @SendTo("/topic/peer/offer/{camKey}/{roomShortUuid}")
+    public String peerHandleOffer(
+            @Payload String offer,
+            @DestinationVariable(value = "roomShortUuid") String roomShortUuid,
+            @DestinationVariable(value = "camKey") String camKey
+    ) {
+        log.info("[OFFER] {} : {}", camKey, offer);
+        return offer;
+    }
+
+    //iceCandidate 정보를 주고 받기 위한 webSocket
+    //camKey : 각 요청하는 캠의 key , roomShortUuid : 룸 아이디
+    @MessageMapping("/peer/iceCandidate/{camKey}/{roomShortUuid}")
+    @SendTo("/topic/peer/iceCandidate/{camKey}/{roomShortUuid}")
+    public String peerHandleIceCandidate(
+            @Payload String candidate,
+            @DestinationVariable(value = "roomShortUuid") String roomShortUuid,
+            @DestinationVariable(value = "camKey") String camKey
+    ) {
+        log.info("[ICECANDIDATE] {} : {}", camKey, candidate);
+        return candidate;
+    }
+
+    //
+    @MessageMapping("/peer/answer/{camKey}/{roomShortUuid}")
+    @SendTo("/topic/peer/answer/{camKey}/{roomShortUuid}")
+    public String peerHandleAnswer(
+            @Payload String answer,
+            @DestinationVariable(value = "roomShortUuid") String roomShortUuid,
+            @DestinationVariable(value = "camKey") String camKey
+    ) {
+        log.info("[ANSWER] {} : {}", camKey, answer);
+        return answer;
+    }
+
+    //camKey 를 받기위해 신호를 보내는 webSocket
+    @MessageMapping("/call/key")
+    @SendTo("/topic/call/key")
+    public String callKey(@Payload String message) {
+        log.info("[Key] : {}", message);
+        return message;
+    }
+
+    //자신의 camKey 를 모든 연결된 세션에 보내는 webSocket
+    @MessageMapping("/send/key")
+    @SendTo("/topic/send/key")
+    public String sendKey(@Payload String message) {
+        return message;
+    }
+}