post update and delete

src/main/java/com/example/oneul/domain/post/dao/PostCommandRepository.java

@@ -1,11 +1,15 @@
 package com.example.oneul.domain.post.dao;
 
+import java.util.Optional;
+
 import com.example.oneul.domain.post.domain.Post;
+import com.example.oneul.domain.user.domain.UserEntity;
 
 import org.springframework.data.repository.CrudRepository;
 
 public interface PostCommandRepository extends CrudRepository<Post, Long> {
     Post save(Post post);
+    Optional<Post> findByIdAndWriter(Long id, UserEntity writer);
     void deleteById(Long id);
     void delete(Post post);
 }

src/main/java/com/example/oneul/domain/post/service/command/PostCommnadServiceImpl.java

@@ -5,6 +5,7 @@ import javax.servlet.http.HttpSession;
 import com.example.oneul.domain.post.dao.PostCommandRepository;
 import com.example.oneul.domain.post.domain.Post;
 import com.example.oneul.domain.user.domain.UserEntity;
+import com.example.oneul.global.error.exception.NotFoundException;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -25,20 +26,31 @@ public class PostCommnadServiceImpl implements PostCommandService{
     @Override
     public Post createPost(Post post, HttpSession httpSession){
         UserEntity userEntity = (UserEntity) httpSession.getAttribute("user");
-        return postCommandRepository.save(
+        
+        Post postEntity =  postCommandRepository.save(
             Post.builder()
                 .content(post.getContent())
                 .writer(userEntity)
                 .build());
+
+        log.info("user: " + userEntity.toString() + " create " + post.toString());
+        return postEntity;
     }
 
     @Override
-    public Post updatePost(Long id, Post post, HttpSession httpSession){
-        return new Post();
+    public Post updatePost(Long id, Post post, HttpSession httpSession){  
+        UserEntity userEntity = (UserEntity) httpSession.getAttribute("user");
+        Post postEntity = postCommandRepository.findByIdAndWriter(id, userEntity).orElseThrow(() -> new NotFoundException(id + " post not found"));
+        postEntity.setConent(post.getContent());
+        postEntity = postCommandRepository.save(postEntity);
+        log.info(postEntity.toString() + " is updated");
+
+        return postEntity;
     }
 
     @Override
     public void deletePost(Long id, HttpSession httpSession){
-        
+        postCommandRepository.deleteById(id);
+        log.info("post " + id + " is deleted");
     }
 }

src/main/java/com/example/oneul/global/error/exception/NotFoundException.java

@@ -0,0 +1,11 @@
+package com.example.oneul.global.error.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(code = HttpStatus.NOT_FOUND, reason = "entity not found")
+public class NotFoundException extends RuntimeException {
+    public NotFoundException(String message){
+        super(message);
+    }
+}