Magnus Krumbacher

.gitignore

@@ -35,3 +35,5 @@ out/
 
 ### VS Code ###
 .vscode/
+
+application.yml

Dockerfile

@@ -0,0 +1,9 @@
+FROM mcr.microsoft.com/openjdk/jdk:21-ubuntu
+
+WORKDIR /app
+
+COPY build/libs/java.docker.day.2-0.0.1.jar /app/java.docker.day.2-0.0.1.jar
+
+EXPOSE 4000
+
+ENTRYPOINT [ "java", "-jar", "java.docker.day.2-0.0.1.jar" ]

docker-compose.yml

@@ -0,0 +1,21 @@
+services:
+  app:
+    image: 'docker-day-2:latest'
+    container_name: app
+    depends_on:
+      - db
+    ports:
+      - '4000:4000'
+    environment:
+      - SPRING_DATASOURCE_URL=jdbc:postgresql://db:5432/mypostgresuser
+      - SPRING_DATASOURCE_USERNAME=mypostgresuser
+      - SPRING_DATASOURCE_PASSWORD=mypostgrespassword
+      - SPRING_JPA_HIBERNATE_DDL_AUTO=update
+
+  db:
+    image: 'postgres:latest'
+    container_name: db
+    environment:
+      - POSTGRES_USER=mypostgresuser
+      - POSTGRES_DATABASE=mypostgresuser
+      - POSTGRES_PASSWORD=mypostgrespassword

src/main/java/com/booleanuk/api/Main.java

@@ -0,0 +1,11 @@
+package com.booleanuk.api;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Main {
+    public static void main(String[] args) {
+        SpringApplication.run(Main.class, args);
+    }
+}

src/main/java/com/booleanuk/api/controllers/PostController.java

@@ -0,0 +1,58 @@
+package com.booleanuk.api.controllers;
+
+
+import com.booleanuk.api.models.Post;
+import com.booleanuk.api.models.User;
+import com.booleanuk.api.repositories.PostRepository;
+import com.booleanuk.api.repositories.UserRepository;
+import org.apache.coyote.Response;
+import org.aspectj.apache.bcel.Repository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("posts")
+public class PostController {
+
+    @Autowired
+    PostRepository postRepository;
+
+    @Autowired
+    UserRepository userRepository;
+
+    @GetMapping
+    public ResponseEntity<List<Post>> getAllPosts() {
+        return new ResponseEntity<>(this.postRepository.findAll(), HttpStatus.OK);
+    }
+
+    @PostMapping
+    public ResponseEntity<Post> createPost(@RequestBody Post post) {
+        User user = this.userRepository.findById(post.getUser().getId())
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "No such user"));
+        post.setUser(user);
+        return new ResponseEntity<>(this.postRepository.save(post), HttpStatus.CREATED);
+    }
+
+    @PutMapping("{id}")
+    public ResponseEntity<Post> updatePost(@PathVariable(name = "id") int id, @RequestBody Post post) {
+        Post postToUpdate = this.postRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "No such user"));
+        postToUpdate.setPostBody(post.getPostBody());
+        return new ResponseEntity<>(this.postRepository.save(postToUpdate), HttpStatus.OK);
+    }
+
+    @DeleteMapping("{id}")
+    public ResponseEntity<Post> deletePost(@PathVariable(name = "id") int id) {
+        Post toDelete = this.postRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Not found"));
+        this.postRepository.delete(toDelete);
+        return ResponseEntity.ok(toDelete);
+    }
+
+
+}

src/main/java/com/booleanuk/api/controllers/UserController.java

@@ -0,0 +1,49 @@
+package com.booleanuk.api.controllers;
+
+import com.booleanuk.api.models.User;
+import com.booleanuk.api.repositories.UserRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.server.ResponseStatusException;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("users")
+public class UserController {
+
+    @Autowired
+    UserRepository userRepository;
+
+    @GetMapping
+    public ResponseEntity<List<User>> getAllUsers() {
+        return new ResponseEntity<>(this.userRepository.findAll(), HttpStatus.OK);
+    }
+
+    @PostMapping
+    public ResponseEntity<User> createUser(@RequestBody User user) {
+        return new ResponseEntity<>(this.userRepository.save(user), HttpStatus.OK);
+    }
+
+    @PutMapping("/{id}")
+    public ResponseEntity<User> updateUser(@PathVariable(name = "id") int id, @RequestBody User user) {
+        User toUpdate = this.userRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "User not found"));
+        toUpdate.setName(user.getName());
+        return new ResponseEntity<>(this.userRepository.save(toUpdate), HttpStatus.CREATED);
+    }
+
+    @DeleteMapping("/{id}")
+    public ResponseEntity<User> deleteUser(@PathVariable int id) {
+        User toDelete = this.userRepository.findById(id)
+                .orElseThrow(() -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Not found"));
+
+        this.userRepository.delete(toDelete);
+        return ResponseEntity.ok(toDelete);
+    }
+
+
+
+}

src/main/java/com/booleanuk/api/models/Post.java

@@ -0,0 +1,34 @@
+package com.booleanuk.api.models;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import jakarta.persistence.*;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@Table(name = "posts")
+public class Post {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    @Column
+    private String postBody;
+
+    @ManyToOne
+    @JoinColumn(name = "user_id")
+    @JsonIgnoreProperties("posts")
+    private User user;
+
+    public Post(int id) {
+        this.id = id;
+    }
+
+}

src/main/java/com/booleanuk/api/models/User.java

@@ -0,0 +1,35 @@
+package com.booleanuk.api.models;
+
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import jakarta.persistence.*;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+import java.util.List;
+
+@Entity
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@Table(name = "users")
+public class User {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+
+    @Column
+    private String name;
+
+    @OneToMany(mappedBy = "user")
+    @JsonIgnoreProperties({"id", "user"})
+    private List<Post> posts;
+
+    public User(int id) {
+        this.id = id;
+    }
+
+
+}

src/main/java/com/booleanuk/api/repositories/PostRepository.java

@@ -0,0 +1,6 @@
+package com.booleanuk.api.repositories;
+
+import com.booleanuk.api.models.Post;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface PostRepository extends JpaRepository<Post, Integer> {}

src/main/java/com/booleanuk/api/repositories/UserRepository.java

@@ -0,0 +1,6 @@
+package com.booleanuk.api.repositories;
+
+import com.booleanuk.api.models.User;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+public interface UserRepository extends JpaRepository<User, Integer> {}