2025-07 spring data rest

2025-07/spring-31-data-rest/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-31-data-rest</artifactId>
+    <version>1.0</version>
+
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>spring-31-exercise</module>
+        <module>spring-31-solution</module>
+    </modules>
+</project>

2025-07/spring-31-data-rest/requests.http

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+### "Index page"
+GET http://localhost:8080/actuator
+
+### Список бинов, созданных в приложении
+GET http://localhost:8080/actuator/beans
+
+### Информация о приложении
+GET http://localhost:8080/actuator/info
+
+### Все @ConfigurationProperties
+GET http://localhost:8080/actuator/configprops
+
+### Все перепенные окружения
+GET http://localhost:8080/actuator/env
+
+### Список логгеров
+GET http://localhost:8080/actuator/loggers
+
+### Конфигурация конкретного логгера
+GET http://localhost:8080/actuator/loggers/org.springframework
+
+### Изменение уровня логгирования в runtime
+POST http://localhost:8080/actuator/loggers/org.springframework
+Content-Type: application/json
+
+{
+  "configuredLevel": "TRACE"
+}
+
+### Healthchecks
+GET http://localhost:8080/actuator/health
+
+### Собственный healthcheck
+GET http://localhost:8080/actuator/health/my
+
+### Список метрик
+GET http://localhost:8080/actuator/metrics
+
+### Состояние подключений к БД
+GET http://localhost:8080/actuator/metrics/hikaricp.connections.usage
+
+### Загрузка CPU приложением
+GET http://localhost:8080/actuator/metrics/process.cpu.usage
+
+### Используемая JVM память
+GET http://localhost:8080/actuator/metrics/jvm.memory.used
+
+### Получение данных о запросах
+# Дополнительно можно настроить SLA, персентили и т.д.
+# причём для отдельных запросов
+GET http://localhost:8080/actuator/metrics/http.server.requests
+
+### А вот все метрики для Promehteus
+GET http://localhost:8080/actuator/prometheus
+
+
+### Spring Data REST - Single entity
+GET http://localhost:8080/person/40
+
+### Spring Data REST - Collection
+GET http://localhost:8080/person
+
+### Add Alex
+POST http://localhost:8080/person
+Content-Type: application/json
+
+{
+  "name": "Alex"
+}
+
+### Rename Ivan
+PATCH http://localhost:8080/person/1
+Content-Type: application/json
+
+{
+  "name": "Anton"
+}
+
+###

2025-07/spring-31-data-rest/spring-31-exercise/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-31-exercise</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.1.3</version>
+        <relativePath/>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <!-- Вот это и есть Spring Data REST -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-rest</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-registry-prometheus</artifactId>
+        </dependency>
+        <!-- HAL Explorer - это Swagger для Spring Data REST -->
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-rest-hal-explorer</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

2025-07/spring-31-data-rest/spring-31-exercise/src/main/java/ru/otus/spring/microservice/App.java

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+package ru.otus.spring.microservice;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+
+import jakarta.annotation.PostConstruct;
+import ru.otus.spring.microservice.domain.Person;
+import ru.otus.spring.microservice.repostory.PersonRepository;
+
+
+@SpringBootApplication
+@EnableWebMvc
+public class App {
+
+    @Autowired
+    private PersonRepository repository;
+
+    public static void main(String[] args) {
+        SpringApplication.run(App.class);
+    }
+
+    @PostConstruct
+    public void init() {
+        for(int i = 0 ; i < 1000; ++i) {
+            repository.save(new Person("Ivan"));
+            repository.save(new Person("Maria"));
+        }
+    }
+}

2025-07/spring-31-data-rest/spring-31-exercise/src/main/java/ru/otus/spring/microservice/domain/Person.java

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+package ru.otus.spring.microservice.domain;
+
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+
+@Entity
+public class Person {
+
+    @Id
+    @GeneratedValue
+    private int id;
+    private String name;
+
+    public Person() {
+    }
+
+    public Person(String name) {
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

2025-07/spring-31-data-rest/spring-31-exercise/src/main/java/ru/otus/spring/microservice/repostory/PersonRepository.java

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+package ru.otus.spring.microservice.repostory;
+
+import java.util.List;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.rest.core.annotation.RepositoryRestResource;
+import org.springframework.data.rest.core.annotation.RestResource;
+
+import ru.otus.spring.microservice.domain.Person;
+
+@RepositoryRestResource(path = "person")
+public interface PersonRepository extends CrudRepository<Person, Integer> {
+
+    @Override
+    List<Person> findAll();
+
+    @RestResource(path = "names")
+    List<Person> findByName(String name);
+}

2025-07/spring-31-data-rest/spring-31-solution/pom.xml

@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>ru.otus</groupId>
+    <artifactId>spring-31-solution</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.1.3</version>
+        <relativePath/>
+    </parent>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.h2database</groupId>
+            <artifactId>h2</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jpa</artifactId>
+        </dependency>
+        <!-- Вот это и есть Spring Data REST -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-rest</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-actuator</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.micrometer</groupId>
+            <artifactId>micrometer-registry-prometheus</artifactId>
+        </dependency>
+        <!-- HAL Explorer - это Swagger для Spring Data REST -->
+        <dependency>
+            <groupId>org.springframework.data</groupId>
+            <artifactId>spring-data-rest-hal-explorer</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

2025-07/spring-31-data-rest/spring-31-solution/src/main/java/ru/otus/spring/microservice/App.java

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+package ru.otus.spring.microservice;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+
+import jakarta.annotation.PostConstruct;
+import ru.otus.spring.microservice.domain.Person;
+import ru.otus.spring.microservice.repostory.PersonRepository;
+
+
+@SpringBootApplication
+@EnableWebMvc
+public class App {
+
+    @Autowired
+    private PersonRepository repository;
+
+    public static void main(String[] args) {
+        SpringApplication.run(App.class);
+    }
+
+    @PostConstruct
+    public void init() {
+        for(int i = 0 ; i < 1000; ++i) {
+            repository.save(new Person("Ivan"));
+            repository.save(new Person("Maria"));
+        }
+    }
+}

2025-07/spring-31-data-rest/spring-31-solution/src/main/java/ru/otus/spring/microservice/actuators/RandomHealthIndicator.java

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+package ru.otus.spring.microservice.actuators;
+
+import java.util.Random;
+
+import org.springframework.boot.actuate.health.Health;
+import org.springframework.boot.actuate.health.HealthIndicator;
+import org.springframework.boot.actuate.health.Status;
+import org.springframework.stereotype.Component;
+
+@Component
+public class RandomHealthIndicator implements HealthIndicator {
+
+    private final Random random = new Random();
+
+    @Override
+    public Health health() {
+        boolean serverIsDown = random.nextBoolean();
+        if (serverIsDown) {
+            return Health.down()
+                    .status(Status.DOWN)
+                    .withDetail("message", "Караул!")
+                    .build();
+        } else {
+            return Health.up().withDetail("message", "Ура, товарищи!").build();
+        }
+    }
+}

2025-07/spring-31-data-rest/spring-31-solution/src/main/java/ru/otus/spring/microservice/domain/Person.java

@@ -0,0 +1,38 @@
+package ru.otus.spring.microservice.domain;
+
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.Id;
+
+@Entity
+public class Person {
+
+    @Id
+    @GeneratedValue
+    private int id;
+    private String name;
+
+    public Person() {
+    }
+
+    public Person(String name) {
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}

2025-07/spring-31-data-rest/spring-31-solution/src/main/java/ru/otus/spring/microservice/repostory/PersonRepository.java

@@ -0,0 +1,19 @@
+package ru.otus.spring.microservice.repostory;
+
+import java.util.List;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.rest.core.annotation.RepositoryRestResource;
+import org.springframework.data.rest.core.annotation.RestResource;
+
+import ru.otus.spring.microservice.domain.Person;
+
+@RepositoryRestResource(path = "person")
+public interface PersonRepository extends CrudRepository<Person, Integer> {
+
+    @Override
+    List<Person> findAll();
+
+    @RestResource(path = "names", rel = "names")
+    List<Person> findByName(String name);
+}

2025-07/spring-31-data-rest/spring-31-solution/src/main/resources/application.yml

@@ -0,0 +1,14 @@
+management:
+  endpoints:
+    web:
+      exposure:
+        include: "*"
+  endpoint:
+    health:
+      show-details: always
+  health:
+    defaults:
+      enabled: true
+spring:
+  jmx:
+    enabled: true