♻️: openFeign을 통해 카카오, 구글 서버에 idToken, accessToken 요청

src/main/java/ohsoontaxi/backend/global/api/client/GoogleAuthClient.java

@@ -1,15 +1,28 @@
 package ohsoontaxi.backend.global.api.client;
 
+import feign.Headers;
 import ohsoontaxi.backend.global.api.dto.OIDCPublicKeysResponse;
+import ohsoontaxi.backend.global.api.dto.OauthTokenResponse;
 import org.springframework.cache.annotation.Cacheable;
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
 
 @FeignClient(name = "GoogleAuthClient", url = "https://www.googleapis.com/oauth2")
 public interface GoogleAuthClient {
 
     @Cacheable(cacheNames = "GoogleOICD", cacheManager = "oidcCacheManager")
     @GetMapping("/v3/certs")
     OIDCPublicKeysResponse getGoogleOIDCOpenKeys();
+
+    @Headers("Content-type: application/x-www-form-urlencoded;charset=utf-8")
+    @PostMapping(
+            "/v4/token?code={CODE}&client_id={CLIENT_ID}&client_secret={CLIENT_SECRET}&redirect_uri={REDIRECT_URI}&grant_type=authorization_code")
+    OauthTokenResponse googleAuth(
+            @PathVariable("CODE") String code,
+            @PathVariable("CLIENT_ID") String clientId,
+            @PathVariable("CLIENT_SECRET") String client_secret,
+            @PathVariable("REDIRECT_URI") String redirectUri);
 }
 

src/main/java/ohsoontaxi/backend/global/api/client/KakaoOauthClient.java

@@ -1,14 +1,26 @@
 package ohsoontaxi.backend.global.api.client;
 
+import feign.Headers;
 import ohsoontaxi.backend.global.api.dto.OIDCPublicKeysResponse;
+import ohsoontaxi.backend.global.api.dto.OauthTokenResponse;
 import org.springframework.cache.annotation.Cacheable;
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
 
 @FeignClient(name = "KakaoAuthClient", url = "https://kauth.kakao.com")
 public interface KakaoOauthClient {
 
     @Cacheable(cacheNames = "KakaoOICD", cacheManager = "oidcCacheManager")
     @GetMapping("/.well-known/jwks.json")
     OIDCPublicKeysResponse getKakaoOIDCOpenKeys();
+
+    @Headers("Content-type: application/x-www-form-urlencoded;charset=utf-8")
+    @PostMapping(
+            "/oauth/token?grant_type=authorization_code&client_id={CLIENT_ID}&redirect_uri={REDIRECT_URI}&code={CODE}")
+    OauthTokenResponse kakaoAuth(
+            @PathVariable("CLIENT_ID") String clientId,
+            @PathVariable("REDIRECT_URI") String redirectUri,
+            @PathVariable("CODE") String code);
 }

src/main/java/ohsoontaxi/backend/global/api/dto/OauthTokenResponse.java

@@ -0,0 +1,15 @@
+package ohsoontaxi.backend.global.api.dto;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@NoArgsConstructor
+public class OauthTokenResponse {
+    @JsonProperty("id_token")
+    private String idToken;
+
+    @JsonProperty("access_token")
+    private String accessToken;
+}