Marcus Ikdal

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-SNAPSHOT.jar /app/java.docker.day.2-0.0.1-SNAPSHOT.jar
+
+EXPOSE 4000
+
+ENTRYPOINT [ "java", "-jar", "java.docker.day.2-0.0.1-SNAPSHOT.jar" ]

build.gradle

@@ -1,12 +1,17 @@
 plugins {
 	id 'java'
-	id 'org.springframework.boot' version '3.1.4'
-	id 'io.spring.dependency-management' version '1.1.3'
+	id 'org.springframework.boot' version '3.4.2'
+	id 'io.spring.dependency-management' version '1.1.7'
 }
 
 group = 'com.booleanuk'
-version = '0.0.1'
-sourceCompatibility = '17'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(21)
+	}
+}
 
 configurations {
 	compileOnly {
@@ -23,11 +28,25 @@ dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-web'
 	compileOnly 'org.projectlombok:lombok'
 	developmentOnly 'org.springframework.boot:spring-boot-devtools'
-	implementation 'org.postgresql:postgresql:42.6.0'
+	runtimeOnly 'org.postgresql:postgresql'
 	annotationProcessor 'org.projectlombok:lombok'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+    // https://mvnrepository.com/artifact/org.springdoc/springdoc-openapi-starter-webmvc-ui
+    implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.8.3'
 }
 
 tasks.named('test') {
 	useJUnitPlatform()
 }
+
+jar {
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+    manifest {
+        attributes 'Main-Class': 'com.booleanuk.api.Main'
+    }
+
+    from {
+        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
+    }
+}

docker-compose.yml

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

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 +1,76 @@
+package com.booleanuk.api.controllers;
+
+import java.time.LocalDateTime;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.server.ResponseStatusException;
+
+import com.booleanuk.api.models.Post;
+import com.booleanuk.api.models.User;
+import com.booleanuk.api.repositories.PostRepository;
+import com.booleanuk.api.repositories.UserRepository;
+
+@RestController
+@RequestMapping("posts")
+public class PostController {
+    @Autowired
+    private PostRepository postRepository;
+    @Autowired
+    private UserRepository userRepository;
+
+    @GetMapping
+    public List<Post> getAllPosts() {
+        return postRepository.findAll();
+    }
+
+    @GetMapping("{userId}")
+    public List<Post> getPostsByUser(@PathVariable int userId) {
+        List<Post> posts = new ArrayList<>();
+        for (Post p : getAllPosts()) {
+            if (p.getUser().getId() == userId) {
+                posts.add(p);
+            }
+        }
+
+        return posts;
+    }
+
+    @PostMapping("{userId}")
+    public Post addPost(@PathVariable int userId, @RequestBody Post post) {
+        User user = userRepository.findById(userId).orElseThrow(
+                () -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Could not find user with this id"));
+        post.setUser(user);
+        post.setCreatedAt(LocalDateTime.now().toString());
+
+        return postRepository.save(post);
+    }
+
+    @PutMapping("{postId}")
+    public Post updatePost(@PathVariable int postId, @RequestBody Post post) {
+        Post postToUpdate = postRepository.findById(postId).orElseThrow(
+                () -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Could not find post with this id"));
+        postToUpdate.setText(post.getText());
+
+        return postRepository.save(postToUpdate);
+    }
+
+    @DeleteMapping("{postId}")
+    public Post deletePost(@PathVariable int postId) {
+        Post postToDelete = postRepository.findById(postId).orElseThrow(
+                () -> new ResponseStatusException(HttpStatus.NOT_FOUND, "Could not find post with this id"));
+
+        postRepository.delete(postToDelete);
+        return postToDelete;
+    }
+}

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

@@ -0,0 +1,54 @@
+package com.booleanuk.api.controllers;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.server.ResponseStatusException;
+
+import com.booleanuk.api.repositories.UserRepository;
+import com.booleanuk.api.models.User;
+
+@RestController
+@RequestMapping("users")
+public class UserController {
+    @Autowired
+    private UserRepository userRepository;
+
+    @GetMapping
+    public List<User> getAllUsers() {
+        return userRepository.findAll();
+    }
+
+    @PostMapping
+    public User addUser(@RequestBody User newUser) {
+        return userRepository.save(newUser);
+    }
+
+    @PutMapping("{id}")
+    public User updateUser(@PathVariable int id, @RequestBody User user) {
+        User userToUpdate = userRepository.findById(id).orElseThrow(
+                () -> new ResponseStatusException(HttpStatus.NOT_FOUND));
+        userToUpdate.setUsername(user.getUsername());
+        userToUpdate.setAge(user.getAge());
+
+        return userRepository.save(userToUpdate);
+    }
+
+    @DeleteMapping("{id}")
+    public User deleteUser(@PathVariable int id) {
+        User userToDelete = userRepository.findById(id).orElseThrow(
+                () -> new ResponseStatusException(HttpStatus.NOT_FOUND));
+        userRepository.delete(userToDelete);
+
+        return userToDelete;
+    }
+}

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

@@ -0,0 +1,41 @@
+package com.booleanuk.api.models;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.Table;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@Entity
+@Table(name = "posts")
+public class Post {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+    @Column
+    private String text;
+    @Column
+    private String createdAt;
+
+    @ManyToOne
+    private User user;
+
+    public Post(String text, String createdAt) {
+        this.text = text;
+        this.createdAt = createdAt;
+    }
+
+    public Post(String text) {
+        this.text = text;
+    }
+}

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

@@ -0,0 +1,42 @@
+package com.booleanuk.api.models;
+
+import java.util.List;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
+import jakarta.persistence.Column;
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+import lombok.Setter;
+
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@Entity
+@Table(name = "users")
+public class User {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private int id;
+    @Column
+    private String username;
+    @Column
+    private int age;
+
+    @OneToMany(mappedBy = "user")
+    @JsonIgnore
+    private List<Post> posts;
+
+    public User(String username, int age) {
+        this.username = username;
+        this.age = age;
+    }
+}

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

@@ -0,0 +1,8 @@
+package com.booleanuk.api.repositories;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.booleanuk.api.models.Post;
+
+public interface PostRepository extends JpaRepository<Post, Integer> {
+}

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

@@ -0,0 +1,7 @@
+package com.booleanuk.api.repositories;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import com.booleanuk.api.models.User;
+
+public interface UserRepository extends JpaRepository<User, Integer> {
+}