From 0a9a80a6058d06f531d310c39b0211bc0451f299 Mon Sep 17 00:00:00 2001
From: dungbik <q1w2e30630@gmail.com>
Date: Sat, 14 Mar 2026 20:51:05 +0900
Subject: [PATCH] =?UTF-8?q?Feat:=20=EC=9D=B4=EB=A9=94=EC=9D=BC=EB=A1=9C=20?=
 =?UTF-8?q?=ED=9A=8C=EC=9B=90=20=EC=A1=B0=ED=9A=8C=20GRPC?=
MIME-Version: 1.0
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---
 .../grpc/GrpcUserQueryService.java            | 24 +++++++++++++++++++
 src/main/proto/user_query.proto               | 10 ++++++++
 2 files changed, 34 insertions(+)

diff --git a/src/main/java/flipnote/user/user/presentation/grpc/GrpcUserQueryService.java b/src/main/java/flipnote/user/user/presentation/grpc/GrpcUserQueryService.java
index 54a49de..24647e5 100644
--- a/src/main/java/flipnote/user/user/presentation/grpc/GrpcUserQueryService.java
+++ b/src/main/java/flipnote/user/user/presentation/grpc/GrpcUserQueryService.java
@@ -2,6 +2,8 @@
 
 import flipnote.user.user.domain.User;
 import flipnote.user.user.domain.UserRepository;
+import flipnote.user.grpc.GetUserByEmailRequest;
+import flipnote.user.grpc.GetUserByEmailResponse;
 import flipnote.user.grpc.GetUserRequest;
 import flipnote.user.grpc.GetUserResponse;
 import flipnote.user.grpc.GetUsersRequest;
@@ -61,6 +63,28 @@ public void getUsers(GetUsersRequest request, StreamObserver<GetUsersResponse> r
         }
     }
 
+    @Override
+    public void getUserByEmail(GetUserByEmailRequest request, StreamObserver<GetUserByEmailResponse> responseObserver) {
+        try {
+            User user = userRepository.findByEmailAndStatus(request.getEmail(), User.Status.ACTIVE)
+                    .orElse(null);
+
+            GetUserByEmailResponse.Builder responseBuilder = GetUserByEmailResponse.newBuilder();
+
+            if (user != null) {
+                responseBuilder.setExists(true).setUser(toResponse(user));
+            } else {
+                responseBuilder.setExists(false);
+            }
+
+            responseObserver.onNext(responseBuilder.build());
+            responseObserver.onCompleted();
+        } catch (Exception e) {
+            log.error("gRPC getUserByEmail error. email: {}", request.getEmail(), e);
+            responseObserver.onError(Status.INTERNAL.withDescription("Internal error").asRuntimeException());
+        }
+    }
+
     private GetUserResponse toResponse(User user) {
         return GetUserResponse.newBuilder()
                 .setId(user.getId())
diff --git a/src/main/proto/user_query.proto b/src/main/proto/user_query.proto
index 93b3afb..688e7c1 100644
--- a/src/main/proto/user_query.proto
+++ b/src/main/proto/user_query.proto
@@ -9,6 +9,7 @@ package user_query;
 service UserQueryService {
   rpc GetUser(GetUserRequest) returns (GetUserResponse);
   rpc GetUsers(GetUsersRequest) returns (GetUsersResponse);
+  rpc GetUserByEmail(GetUserByEmailRequest) returns (GetUserByEmailResponse);
 }
 
 message GetUserRequest {
@@ -29,3 +30,12 @@ message GetUsersRequest {
 message GetUsersResponse {
   repeated GetUserResponse users = 1;
 }
+
+message GetUserByEmailRequest {
+  string email = 1;
+}
+
+message GetUserByEmailResponse {
+  bool exists = 1;
+  GetUserResponse user = 2;
+}