feat: 에러 발생 이벤트 처리 기능 추가

Author: minsu20

src/main/java/com/moing/backend/global/config/slack/exception/ExceptionEventHandler.java

@@ -0,0 +1,21 @@
+package com.moing.backend.global.config.slack.exception;
+
+import com.moing.backend.global.config.slack.exception.dto.ExceptionEvent;
+import com.moing.backend.global.config.slack.util.WebhookUtil;
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.event.EventListener;
+import org.springframework.scheduling.annotation.Async;
+import org.springframework.stereotype.Component;
+
+@RequiredArgsConstructor
+@Component
+public class ExceptionEventHandler {
+
+    private final WebhookUtil webhookUtil;
+
+    @Async("asyncTaskExecutor")
+    @EventListener
+    public void onExceptionEvent(ExceptionEvent event) {
+        webhookUtil.sendSlackAlertErrorLog(event.getRequest(), event.getException());
+    }
+}

src/main/java/com/moing/backend/global/config/slack/exception/dto/ExceptionEvent.java

@@ -0,0 +1,14 @@
+package com.moing.backend.global.config.slack.exception.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+
+import javax.servlet.http.HttpServletRequest;
+
+@Getter
+@AllArgsConstructor
+public class ExceptionEvent {
+
+    private final HttpServletRequest request;
+    private final Exception exception;
+}