2022-03 spring-06-bean-scopes-and-lifecycle added

2023-03/spring-06-bean-scopes-and-lifecycle/.gitignore

@@ -0,0 +1,4 @@
+.idea/
+*.iml
+
+target/

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/.gitignore

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+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+#other
+*.bat
+*/.idea
+*.iml
+*/target
+
+.idea
+*.iml
+target

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/README.md

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+#### Упражнение №2
+- Изучить классы ничего в них не меняя:
+    - CustomBeanFactoryPostProcessor
+    - CustomBeanPostProcessor
+    - CustomLifeCycleBean 
+- Запуститить приложение
+- Изучить распечатанный жизненный цикл
+
+
+#### Упражнение №3
+- В application.yml выставить spring.shell.interactive.enabled в true
+- Запуститить приложение командой "cfn" или "call-favorite-number"
+- Запомнить результат
+- В CustomBeanFactoryPostProcessor раскомментировать блок кода
+- Запуститить приложение командой "cfn" или "call-favorite-number"
+- Что изменилось?
+- В CustomBeanPostProcessor раскомментировать строку
+- Запуститить приложение командой "cfn" или "call-favorite-number"
+- Что изменилось теперь? Круто, да?

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-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>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+<!--
+		<version>2.7.8</version>
+-->
+		<version>3.0.5</version>
+		<relativePath/>
+	</parent>
+	<groupId>ru.otus.example</groupId>
+	<artifactId>beans-lifecycle-exercise</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<properties>
+<!--
+		<java.version>11</java.version>
+		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.target>11</maven.compiler.target>
+-->
+		<java.version>17</java.version>
+		<maven.compiler.source>17</maven.compiler.source>
+		<maven.compiler.target>17</maven.compiler.target>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+</project>

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/BeansLifecycleDemoApplication.java

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+package ru.otus.example.beanslifecycledemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+import ru.otus.example.beanslifecycledemo.domain.Phone;
+
+@SpringBootApplication
+public class BeansLifecycleDemoApplication {
+
+	public static void main(String[] args) {
+		ApplicationContext ctx = SpringApplication.run(BeansLifecycleDemoApplication.class, args);
+		try {
+			Phone phone = ctx.getBean(Phone.class);
+			phone.callFavoriteNumber();
+		}catch (Exception e) {
+		}
+	}
+
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/domain/FriendPhoneNumber.java

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+package ru.otus.example.beanslifecycledemo.domain;
+
+public class FriendPhoneNumber extends PhoneNumber {
+    @Override
+    public String getOwnerName() {
+        return "Друг";
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/domain/GirlfiendPhoneNumber.java

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+package ru.otus.example.beanslifecycledemo.domain;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class GirlfiendPhoneNumber extends PhoneNumber {
+    @Override
+    public String getOwnerName() {
+        return "Подруга";
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/domain/Phone.java

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+package ru.otus.example.beanslifecycledemo.domain;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.stereotype.Component;
+
+@Component
+@ConditionalOnProperty(name = "lifecycle.print.enabled", havingValue = "false")
+@RequiredArgsConstructor
+public class Phone {
+    private String greeting = "Погнали к родителям";
+
+    private final PhoneNumber favoriteNumber;
+
+    public void callFavoriteNumber() {
+        System.out.println(favoriteNumber.getOwnerName() + " " + greeting);
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/domain/PhoneNumber.java

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+package ru.otus.example.beanslifecycledemo.domain;
+
+public abstract class PhoneNumber {
+    public String getOwnerName() {
+        return "Спорт-лото";
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/lifecycle/CustomBeanDefinitionRegistrar.java

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+package ru.otus.example.beanslifecycledemo.lifecycle;
+
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.beans.factory.support.BeanNameGenerator;
+import org.springframework.beans.factory.support.GenericBeanDefinition;
+import org.springframework.context.EnvironmentAware;
+import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
+import org.springframework.core.env.Environment;
+import org.springframework.core.type.AnnotationMetadata;
+
+import java.util.Optional;
+
+public class CustomBeanDefinitionRegistrar implements ImportBeanDefinitionRegistrar, EnvironmentAware {
+    private Environment environment;
+
+    @Override
+    public void setEnvironment(Environment environment) {
+        this.environment = environment;
+    }
+
+    @Override
+    public void registerBeanDefinitions(AnnotationMetadata importingClassMetadata,
+                                        BeanDefinitionRegistry registry,
+                                        BeanNameGenerator importBeanNameGenerator) {
+        registerBeanDefinitions(importingClassMetadata, registry);
+    }
+
+    @Override
+    public void registerBeanDefinitions(AnnotationMetadata metadata,
+                                        BeanDefinitionRegistry registry) {
+
+        registerBeanFactoryPostProcessor(registry);
+        registerBeanPostProcessor(registry);
+
+        if (Optional.ofNullable(environment.getProperty("lifecycle.print.enabled", Boolean.class)).orElse(false)) {
+            System.out.println("Шаг #0: ImportBeanDefinitionRegistrar.registerBeanDefinitions\n");
+            registerCustomLifeCycleBean(registry);
+        }
+
+    }
+
+    private void registerCustomLifeCycleBean(BeanDefinitionRegistry registry) {
+        GenericBeanDefinition gbd = new GenericBeanDefinition();
+        gbd.setBeanClass(CustomLifeCycleBean.class);
+        gbd.setInitMethodName("customInitMethod");
+        gbd.setDestroyMethodName("customDestroyMethod");
+        registry.registerBeanDefinition("customLifeCycleBean", gbd);
+    }
+
+    private void registerBeanFactoryPostProcessor(BeanDefinitionRegistry registry) {
+        GenericBeanDefinition gbd = new GenericBeanDefinition();
+        gbd.setBeanClass(CustomBeanFactoryPostProcessor.class);
+        registry.registerBeanDefinition("customBeanFactoryPostProcessor", gbd);
+    }
+
+    private void registerBeanPostProcessor(BeanDefinitionRegistry registry) {
+        GenericBeanDefinition gbd = new GenericBeanDefinition();
+        gbd.setBeanClass(CustomBeanPostProcessor.class);
+        registry.registerBeanDefinition("customBeanPostProcessor", gbd);
+    }
+
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/lifecycle/CustomBeanFactoryPostProcessor.java

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+package ru.otus.example.beanslifecycledemo.lifecycle;
+
+import org.springframework.beans.BeanMetadataAttribute;
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.context.annotation.ScannedGenericBeanDefinition;
+import ru.otus.example.beanslifecycledemo.domain.FriendPhoneNumber;
+import ru.otus.example.beanslifecycledemo.domain.GirlfiendPhoneNumber;
+
+public class CustomBeanFactoryPostProcessor implements BeanFactoryPostProcessor {
+    @Override
+    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
+
+        if (beanFactory.containsBean("customLifeCycleBean")) {
+            System.out.println("Шаг #1: BeanFactoryPostProcessor.postProcessBeanFactory\n");
+        }
+
+/*
+        for (String beanName : beanFactory.getBeanDefinitionNames()) {
+            BeanDefinition d = beanFactory.getBeanDefinition(beanName);
+
+            if (GirlfiendPhoneNumber.class.getName().equalsIgnoreCase(d.getBeanClassName())) {
+                d.setBeanClassName(FriendPhoneNumber.class.getName());
+                ((ScannedGenericBeanDefinition) d).addMetadataAttribute(new BeanMetadataAttribute("className", FriendPhoneNumber.class.getName()));
+                d.setAutowireCandidate(true);
+            }
+        }
+*/
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/lifecycle/CustomBeanPostProcessor.java

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+package ru.otus.example.beanslifecycledemo.lifecycle;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.InvalidPropertyException;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+import ru.otus.example.beanslifecycledemo.domain.Phone;
+
+import java.lang.reflect.Field;
+
+public class CustomBeanPostProcessor implements BeanPostProcessor {
+
+    public static final String GREETING_PROPERTY = "greeting";
+
+    @Override
+    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
+        if (bean.getClass().equals(CustomLifeCycleBean.class)) {
+            System.out.println("Шаг #5: BeanPostProcessor.postProcessBeforeInitialization\n");
+        }
+        return bean;
+    }
+
+    @Override
+    public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
+        if (bean.getClass().equals(CustomLifeCycleBean.class)) {
+            System.out.println("Шаг #9: BeanPostProcessor.postProcessAfterInitialization\n");
+        }
+
+/*
+        if (bean.getClass().isAssignableFrom(Phone.class)) {
+            updateGreeting(bean);
+        }
+*/
+        return bean;
+    }
+
+    private void updateGreeting(Object bean) {
+        Class<?> aClass = Phone.class;
+        try {
+            Field greetingField = aClass.getDeclaredField(GREETING_PROPERTY);
+
+            greetingField.setAccessible(true);
+            greetingField.set(bean, "Ай-да в гараж. Стихи читать!");
+        } catch (Exception e) {
+            throw new InvalidPropertyException(Phone.class, GREETING_PROPERTY,
+                    "Bean class does not have expected property", e);
+        }
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/lifecycle/CustomLifeCycleBean.java

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+package ru.otus.example.beanslifecycledemo.lifecycle;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.*;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+/*
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+*/
+
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+
+public class CustomLifeCycleBean implements InitializingBean, DisposableBean, BeanNameAware,
+        BeanFactoryAware, ApplicationContextAware {
+
+    @Override
+    public void setBeanName(String s) {
+        System.out.println("Шаг #2: BeanNameAware\n");
+    }
+
+    @Override
+    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
+        System.out.println("Шаг #3: BeanFactoryAware\n");
+    }
+
+    @Override
+    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+        System.out.println("Шаг #4: ApplicationContextAware\n");
+    }
+
+    @PostConstruct
+    public void postConstruct() {
+        System.out.println("Шаг #6: @PostConstruct\n");
+    }
+
+    @Override
+    public void afterPropertiesSet() throws Exception {
+        System.out.println("Шаг #7: InitializingBean.afterPropertiesSet\n");
+    }
+
+    public void customInitMethod() {
+        System.out.println("Шаг #8: CustomLifeCycleBean.customInitMethod\n");
+    }
+
+    @PreDestroy
+    public void preDestroy() {
+        System.out.println("Шаг #10: @PreDestroy\n");
+    }
+
+    @Override
+    public void destroy() throws Exception {
+        System.out.println("Шаг #11: DisposableBean.destroy\n");
+    }
+
+    public void customDestroyMethod() {
+        System.out.println("Шаг #12: CustomLifeCycleBean.customDestroyMethod\n");
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/java/ru/otus/example/beanslifecycledemo/lifecycle/LifeCycleConfig.java

@@ -0,0 +1,30 @@
+package ru.otus.example.beanslifecycledemo.lifecycle;
+
+import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
+import org.springframework.beans.factory.config.BeanPostProcessor;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+@Import(CustomBeanDefinitionRegistrar.class)
+@Configuration
+public class LifeCycleConfig {
+/*
+    @Bean
+    public BeanFactoryPostProcessor customBeanFactoryPostProcessor() {
+        return new CustomBeanFactoryPostProcessor();
+    }
+
+    @Bean
+    public BeanPostProcessor customBeanPostProcessor() {
+        return new CustomBeanPostProcessor();
+    }
+
+    @ConditionalOnProperty(name = "lifecycle.print.enabled", havingValue = "true")
+    @Bean(initMethod = "customInitMethod", destroyMethod = "customDestroyMethod")
+    public CustomLifeCycleBean customLifeCycleBean() {
+        return new CustomLifeCycleBean();
+    }
+*/
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-lifecycle-exercise/src/main/resources/application.yml

@@ -0,0 +1,7 @@
+logging:
+  level:
+    root: ERROR
+
+lifecycle:
+  print:
+    enabled: true

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/.gitignore

@@ -0,0 +1,32 @@
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+#other
+*.bat
+*/.idea
+*.iml
+*/target
+
+.idea
+*.iml
+target

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/README.md

@@ -0,0 +1,9 @@
+#### Упражнение №1
+- Расставить скоупы над сервисами так, чтобы приложение запустилось и заработало, как указано на странице http://localhost:8080
+- Подсказки в названии сервисов
+- Не забываем про proxyMode для некоторых скоупов
+
+```
+Задать скоуп можно с помощью аннотации @Scope
+Возможные значения: singleton, prototype, session, request
+```

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-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>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<!--
+                <version>2.7.8</version>
+        -->
+		<version>3.0.5</version>
+		<relativePath/>
+	</parent>
+	
+	<groupId>ru.otus.example</groupId>
+	<artifactId>beans-scopes-exercise</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<properties>
+		<!--
+                <java.version>11</java.version>
+                <maven.compiler.source>11</maven.compiler.source>
+                <maven.compiler.target>11</maven.compiler.target>
+        -->
+		<java.version>17</java.version>
+		<maven.compiler.source>17</maven.compiler.source>
+		<maven.compiler.target>17</maven.compiler.target>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+</project>

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/BeansScopesDemoApplication.java

@@ -0,0 +1,15 @@
+package ru.otus.example.beansscopesdemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BeansScopesDemoApplication {
+
+	public static void main(String[] args) {
+		var ctx = SpringApplication.run(BeansScopesDemoApplication.class, args);
+		var serverPort = ctx.getEnvironment().getProperty("local.server.port");
+		System.out.printf("Чтобы смотреть результат переходи сюда: http://localhost:%s", serverPort);
+	}
+
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/controllers/GreetingController.java

@@ -0,0 +1,41 @@
+package ru.otus.example.beansscopesdemo.controllers;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import ru.otus.example.beansscopesdemo.services.GreetingService;
+
+@Controller
+public class GreetingController {
+    private final GreetingService singletonGreetingService;
+    private final GreetingService prototypeGreetingService1;
+    private final GreetingService prototypeGreetingService2;
+    private final GreetingService sessionGreetingService;
+    private final GreetingService requestGreetingService;
+
+    public GreetingController(GreetingService singletonGreetingService,
+                              @Qualifier("prototypeGreetingService")
+                                      GreetingService prototypeGreetingService1,
+                              @Qualifier("prototypeGreetingService")
+                                      GreetingService prototypeGreetingService2,
+                              GreetingService sessionGreetingService,
+                              GreetingService requestGreetingService
+    ) {
+        this.singletonGreetingService = singletonGreetingService;
+        this.prototypeGreetingService1 = prototypeGreetingService1;
+        this.prototypeGreetingService2 = prototypeGreetingService2;
+        this.sessionGreetingService = sessionGreetingService;
+        this.requestGreetingService = requestGreetingService;
+    }
+
+    @GetMapping("/")
+    public String greetingPage(Model model) {
+        model.addAttribute("singletonGreeting", singletonGreetingService.greeting());
+        model.addAttribute("sessionGreeting", sessionGreetingService.greeting());
+        model.addAttribute("requestGreeting", requestGreetingService.greeting());
+        model.addAttribute("prototype1Greeting", prototypeGreetingService1.greeting());
+        model.addAttribute("prototype2Greeting", prototypeGreetingService2.greeting());
+        return "index";
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/services/AbstractGreetingServiceImpl.java

@@ -0,0 +1,23 @@
+package ru.otus.example.beansscopesdemo.services;
+
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+public abstract class AbstractGreetingServiceImpl implements GreetingService {
+
+    private final AtomicInteger counter;
+
+    public AbstractGreetingServiceImpl() {
+        this.counter = new AtomicInteger(0);
+    }
+
+    @Override
+    public String greeting() {
+        return currentGreeting();
+    }
+
+    private String currentGreeting() {
+        return String.format("Привет! Это наша встреча №%d. Меня зовут: %s",
+                counter.incrementAndGet(), Integer.toHexString(hashCode()));
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/services/GreetingService.java

@@ -0,0 +1,5 @@
+package ru.otus.example.beansscopesdemo.services;
+
+public interface GreetingService {
+    String greeting();
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/services/PrototypeGreetingServiceImpl.java

@@ -0,0 +1,7 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.stereotype.Service;
+
+@Service("prototypeGreetingService")
+public class PrototypeGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/services/RequestGreetingServiceImpl.java

@@ -0,0 +1,7 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.stereotype.Service;
+
+@Service("requestGreetingService")
+public class RequestGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/services/SessionGreetingServiceImpl.java

@@ -0,0 +1,7 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.stereotype.Service;
+
+@Service("sessionGreetingService")
+public class SessionGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/java/ru/otus/example/beansscopesdemo/services/SingletonGreetingServiceImpl.java

@@ -0,0 +1,7 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.stereotype.Service;
+
+@Service("singletonGreetingService")
+public class SingletonGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/resources/application.yml

@@ -0,0 +1,3 @@
+logging:
+  level:
+    root: ERROR

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-exercise/src/main/resources/templates/index.html

@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Advanced configuration demo</title>
+    <style>
+        body {
+            font-size: 16pt;
+        }
+
+        h3 {
+            color: CornflowerBlue;
+        }
+
+        li {
+            color: DarkGray;
+        }
+
+        p {
+            color: OrangeRed;
+            font-weight: bold;
+        }
+    </style>
+</head>
+<body>
+<p>
+<h3>Демонстрация @Scope</h3>
+<ul>
+    <li>Singleton должен постоянно накручивать счетчик встреч и не менять имя</li>
+    <li>Prototype1 должен вести себя так же, как и Singleton, но иметь имя отличное от Prototype2</li>
+    <li>Prototype2 должен вести себя так же, как и Singleton, но иметь имя отличное от Prototype1</li>
+    <li>Session должен вести себя как Singleton, но только до перезапуска браузера. После, счетчик встреч должен пойти заново</li>
+    <li>Request должен всегда показывать первую встречу и разное имя</li>
+</ul>
+</p>
+
+<hr/>
+
+<p th:text = "'Singleton сказал: ' + ${singletonGreeting}"></p>
+<p th:text = "'Prototype1 сказал: ' + ${prototype1Greeting}"></p>
+<p th:text = "'Prototype2 сказал: ' + ${prototype2Greeting}"></p>
+<p th:text = "'Session сказал: ' + ${sessionGreeting}"></p>
+<p th:text = "'Request сказал: ' + ${requestGreeting}"></p>
+</body>
+</html>

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/.gitignore

@@ -0,0 +1,32 @@
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+
+#other
+*.bat
+*/.idea
+*.iml
+*/target
+
+.idea
+*.iml
+target

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/README.md

@@ -0,0 +1,15 @@
+#### Решение к упражнению №1
+
+@Scope("singleton")  
+SingletonGreetingServiceImpl
+
+@Scope("prototype")  
+PrototypeGreetingServiceImpl
+
+@Scope(value = "request", proxyMode = ScopedProxyMode.INTERFACES)
+RequestGreetingServiceImpl
+
+@Scope(value = "session", proxyMode = ScopedProxyMode.INTERFACES)
+SessionGreetingServiceImpl
+
+

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/pom.xml

@@ -0,0 +1,56 @@
+<?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>
+
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<!--
+                <version>2.7.8</version>
+        -->
+		<version>3.0.5</version>
+		<relativePath/>
+	</parent>
+	
+	<groupId>ru.otus.example</groupId>
+	<artifactId>beans-scopes-solution</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<properties>
+		<!--
+                <java.version>11</java.version>
+                <maven.compiler.source>11</maven.compiler.source>
+                <maven.compiler.target>11</maven.compiler.target>
+        -->
+		<java.version>17</java.version>
+		<maven.compiler.source>17</maven.compiler.source>
+		<maven.compiler.target>17</maven.compiler.target>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-thymeleaf</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<optional>true</optional>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+</project>

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/BeansScopesDemoApplication.java

@@ -0,0 +1,15 @@
+package ru.otus.example.beansscopesdemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class BeansScopesDemoApplication {
+
+	public static void main(String[] args) {
+		var ctx = SpringApplication.run(BeansScopesDemoApplication.class, args);
+		var serverPort = ctx.getEnvironment().getProperty("local.server.port");
+		System.out.printf("Чтобы смотреть результат переходи сюда: http://localhost:%s", serverPort);
+	}
+
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/controllers/GreetingController.java

@@ -0,0 +1,41 @@
+package ru.otus.example.beansscopesdemo.controllers;
+
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import ru.otus.example.beansscopesdemo.services.GreetingService;
+
+@Controller
+public class GreetingController {
+    private final GreetingService singletonGreetingService;
+    private final GreetingService prototypeGreetingService1;
+    private final GreetingService prototypeGreetingService2;
+    private final GreetingService sessionGreetingService;
+    private final GreetingService requestGreetingService;
+
+    public GreetingController(GreetingService singletonGreetingService,
+                              @Qualifier("prototypeGreetingService")
+                                      GreetingService prototypeGreetingService1,
+                              @Qualifier("prototypeGreetingService")
+                                      GreetingService prototypeGreetingService2,
+                              GreetingService sessionGreetingService,
+                              GreetingService requestGreetingService
+    ) {
+        this.singletonGreetingService = singletonGreetingService;
+        this.prototypeGreetingService1 = prototypeGreetingService1;
+        this.prototypeGreetingService2 = prototypeGreetingService2;
+        this.sessionGreetingService = sessionGreetingService;
+        this.requestGreetingService = requestGreetingService;
+    }
+
+    @GetMapping("/")
+    public String greetingPage(Model model) {
+        model.addAttribute("singletonGreeting", singletonGreetingService.greeting());
+        model.addAttribute("sessionGreeting", sessionGreetingService.greeting());
+        model.addAttribute("requestGreeting", requestGreetingService.greeting());
+        model.addAttribute("prototype1Greeting", prototypeGreetingService1.greeting());
+        model.addAttribute("prototype2Greeting", prototypeGreetingService2.greeting());
+        return "index";
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/services/AbstractGreetingServiceImpl.java

@@ -0,0 +1,23 @@
+package ru.otus.example.beansscopesdemo.services;
+
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+public abstract class AbstractGreetingServiceImpl implements GreetingService {
+
+    private final AtomicInteger counter;
+
+    public AbstractGreetingServiceImpl() {
+        this.counter = new AtomicInteger(0);
+    }
+
+    @Override
+    public String greeting() {
+        return currentGreeting();
+    }
+
+    private String currentGreeting() {
+        return String.format("Привет! Это наша встреча №%d. Меня зовут: %s",
+                counter.incrementAndGet(), Integer.toHexString(hashCode()));
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/services/GreetingService.java

@@ -0,0 +1,5 @@
+package ru.otus.example.beansscopesdemo.services;
+
+public interface GreetingService {
+    String greeting();
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/services/PrototypeGreetingServiceImpl.java

@@ -0,0 +1,10 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.stereotype.Service;
+
+@Scope(scopeName = "prototype")
+@Service("prototypeGreetingService")
+public class PrototypeGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/services/RequestGreetingServiceImpl.java

@@ -0,0 +1,11 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.stereotype.Service;
+import org.springframework.web.context.WebApplicationContext;
+
+@Scope(value = "request", proxyMode = ScopedProxyMode.INTERFACES)
+@Service("requestGreetingService")
+public class RequestGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/services/SessionGreetingServiceImpl.java

@@ -0,0 +1,11 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.stereotype.Service;
+import org.springframework.web.context.WebApplicationContext;
+
+@Scope(value = "session", proxyMode = ScopedProxyMode.INTERFACES)
+@Service("sessionGreetingService")
+public class SessionGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/java/ru/otus/example/beansscopesdemo/services/SingletonGreetingServiceImpl.java

@@ -0,0 +1,9 @@
+package ru.otus.example.beansscopesdemo.services;
+
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Service;
+
+@Scope("singleton")
+@Service("singletonGreetingService")
+public class SingletonGreetingServiceImpl extends AbstractGreetingServiceImpl {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/resources/application.yml

@@ -0,0 +1,3 @@
+logging:
+  level:
+    root: ERROR

2023-03/spring-06-bean-scopes-and-lifecycle/beans-scopes-solution/src/main/resources/templates/index.html

@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html lang="ru" xmlns:th="http://www.thymeleaf.org">
+<head>
+    <meta charset="UTF-8">
+    <title>Advanced configuration demo</title>
+    <style>
+        body {
+            font-size: 16pt;
+        }
+
+        h3 {
+            color: CornflowerBlue;
+        }
+
+        li {
+            color: DarkGray;
+        }
+
+        p {
+            color: OrangeRed;
+            font-weight: bold;
+        }
+    </style>
+</head>
+<body>
+    <p>
+        <h3>Демонстрация @Scope</h3>
+        <ul>
+            <li>Singleton должен постоянно накручивать счетчик встреч и не менять имя</li>
+            <li>Prototype1 должен вести себя так же, как и Singleton, но иметь имя отличное от Prototype2</li>
+            <li>Prototype2 должен вести себя так же, как и Singleton, но иметь имя отличное от Prototype1</li>
+            <li>Session должен вести себя как Singleton, но только до перезапуска браузера. После, счетчик встреч должен пойти заново</li>
+            <li>Request должен всегда показывать первую встречу и разное имя</li>
+        </ul>
+    </p>
+
+    <hr/>
+
+    <p th:text = "'Singleton сказал: ' + ${singletonGreeting}"></p>
+    <p th:text = "'Prototype1 сказал: ' + ${prototype1Greeting}"></p>
+    <p th:text = "'Prototype2 сказал: ' + ${prototype2Greeting}"></p>
+    <p th:text = "'Session сказал: ' + ${sessionGreeting}"></p>
+    <p th:text = "'Request сказал: ' + ${requestGreeting}"></p>
+</body>
+</html>

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/README.md

@@ -0,0 +1,3 @@
+#### Демо создания собственного Scope
+
+В зависимости от значения поля `canTakeVacation` класса `VacationCalendar`, бин отпуска либо доступен, либо нет

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/pom.xml

@@ -0,0 +1,51 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<!--
+                <version>2.7.8</version>
+        -->
+		<version>3.0.5</version>
+		<relativePath/> <!-- lookup parent from repository -->
+	</parent>
+	<groupId>ru.otus</groupId>
+	<artifactId>custom-scope-demo</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>custom-scope-demo</name>
+	<description>Custom scope demo</description>
+	<properties>
+		<!--
+		<java.version>11</java.version>
+		<maven.compiler.source>11</maven.compiler.source>
+		<maven.compiler.target>11</maven.compiler.target>
+-->
+		<java.version>17</java.version>
+		<maven.compiler.source>17</maven.compiler.source>
+		<maven.compiler.target>17</maven.compiler.target>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+</project>

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/java/ru/otus/customscopedemo/CustomScopeDemoApplication.java

@@ -0,0 +1,28 @@
+package ru.otus.customscopedemo;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import ru.otus.customscopedemo.scope.VacationDoesNotAvailableException;
+import ru.otus.customscopedemo.vacation.Vacation;
+import ru.otus.customscopedemo.vacation.VacationCalendar;
+
+@SpringBootApplication
+public class CustomScopeDemoApplication {
+	private static final Logger logger = LoggerFactory.getLogger(CustomScopeDemoApplication.class);
+
+	public static void main(String[] args) {
+		var ctx = SpringApplication.run(CustomScopeDemoApplication.class, args);
+		var vacationCalendar = ctx.getBean(VacationCalendar.class);
+		var vacation = ctx.getBean(Vacation.class);
+
+		vacationCalendar.setCanTakeVacation(true);
+		try {
+			vacation.enjoy();
+		} catch (VacationDoesNotAvailableException e) {
+			logger.info("Извини Добби, твой отпуск в другом замке!");
+		}
+	}
+
+}

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/java/ru/otus/customscopedemo/scope/VacationDoesNotAvailableException.java

@@ -0,0 +1,4 @@
+package ru.otus.customscopedemo.scope;
+
+public class VacationDoesNotAvailableException extends RuntimeException {
+}

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/java/ru/otus/customscopedemo/scope/VacationScope.java

@@ -0,0 +1,70 @@
+package ru.otus.customscopedemo.scope;
+
+import org.springframework.beans.factory.ObjectFactory;
+import org.springframework.beans.factory.config.Scope;
+import ru.otus.customscopedemo.vacation.VacationCalendar;
+
+import java.util.HashMap;
+import java.util.Map;
+
+
+public class VacationScope implements Scope {
+
+    private final Map<String, Runnable> destructionCallbacks;
+    private final Map<String, Object> contextualObjects;
+
+    private final VacationCalendar vacationCalendar;
+
+    public VacationScope(VacationCalendar vacationCalendar) {
+        this.destructionCallbacks = new HashMap<>();
+        this.contextualObjects = new HashMap<>();
+        this.vacationCalendar = vacationCalendar;
+    }
+
+    // This is the central operation of a Scope, and the only operation that is absolutely required.
+    @Override
+    public Object get(String name, ObjectFactory<?> objectFactory) {
+        var res = resolveContextualObject(name);
+        if (res != null) {
+            return res;
+        }
+
+        if (vacationCalendar.isCanTakeVacation()) {
+            res = objectFactory.getObject();
+            contextualObjects.put(name, res);
+            return res;
+        }
+
+        throw new VacationDoesNotAvailableException();
+    }
+
+    // Note: This is an optional operation. Implementations may throw UnsupportedOperationException
+    // if they do not support explicitly removing an object.
+    @Override
+    public Object remove(String name) {
+        destructionCallbacks.remove(name);
+        return contextualObjects.remove(name);
+    }
+
+    @Override
+    public void registerDestructionCallback(String name, Runnable runnable) {
+        destructionCallbacks.put(name, runnable);
+    }
+
+    @Override
+    public Object resolveContextualObject(String name) {
+        if (!vacationCalendar.isCanTakeVacation() && contextualObjects.containsKey(name)) {
+            remove(name);
+        }
+        return contextualObjects.get(name);
+    }
+
+    @Override
+    public String getConversationId() {
+        return null;
+    }
+
+    public void onDestroy() {
+        destructionCallbacks.values().forEach(Runnable::run);
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/java/ru/otus/customscopedemo/scope/VacationScopeConfig.java

@@ -0,0 +1,22 @@
+package ru.otus.customscopedemo.scope;
+
+import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.DependsOn;
+import ru.otus.customscopedemo.vacation.VacationCalendar;
+
+@Configuration
+public class VacationScopeConfig {
+
+    @Bean(destroyMethod = "onDestroy")
+    public VacationScope vacationScope(VacationCalendar vacationCalendar){
+        return new VacationScope(vacationCalendar);
+    }
+
+    @DependsOn("vacationScope")
+    @Bean
+    public BeanFactoryPostProcessor vacationScopeRegistrationBeanFactoryPostProcessor(VacationScope vacationScope) {
+        return new VacationScopeRegistrationBeanFactoryPostProcessor(vacationScope);
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/java/ru/otus/customscopedemo/scope/VacationScopeRegistrationBeanFactoryPostProcessor.java

@@ -0,0 +1,19 @@
+package ru.otus.customscopedemo.scope;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+
+public class VacationScopeRegistrationBeanFactoryPostProcessor implements BeanFactoryPostProcessor {
+
+    private final VacationScope scope;
+
+    public VacationScopeRegistrationBeanFactoryPostProcessor(VacationScope scope) {
+        this.scope = scope;
+    }
+
+    @Override
+    public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
+        beanFactory.registerScope("vacation", scope);
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/java/ru/otus/customscopedemo/vacation/Vacation.java

@@ -0,0 +1,48 @@
+package ru.otus.customscopedemo.vacation;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.stereotype.Component;
+
+//import javax.annotation.PreDestroy;
+import jakarta.annotation.PreDestroy;
+import java.time.LocalDateTime;
+import java.util.Random;
+
+@Scope(value = "vacation", proxyMode = ScopedProxyMode.TARGET_CLASS)
+@Component
+public class Vacation {
+
+    private static final Logger logger = LoggerFactory.getLogger(Vacation.class);
+
+    private static final String[] actions = {"спит", "ест", "пьет"};
+    private static final int VACATION_DURATION_SECONDS = 4;
+
+    public void enjoy(){
+        logger.info("Отпуск начат");
+        var random = new Random();
+        var startTime = LocalDateTime.now().plusSeconds(VACATION_DURATION_SECONDS);
+        while (LocalDateTime.now().isBefore(startTime)) {
+            var actionIndex = random.nextInt(3);
+            logger.info("Отдыхающий - {}", actions[actionIndex]);
+            sleep();
+        }
+        logger.info("Отпуск закончен (гаснет свет)");
+    }
+
+    private void sleep() {
+        try {
+            Thread.sleep(100);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @PreDestroy
+    private void destroyMethod(){
+        logger.info("Бин отпуска уничтожен");
+    }
+
+}

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/java/ru/otus/customscopedemo/vacation/VacationCalendar.java

@@ -0,0 +1,21 @@
+package ru.otus.customscopedemo.vacation;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+
+@Component
+public class VacationCalendar {
+    private static final Logger logger = LoggerFactory.getLogger(VacationCalendar.class);
+
+    private boolean canTakeVacation = false;
+
+    public boolean isCanTakeVacation() {
+        return canTakeVacation;
+    }
+
+    public void setCanTakeVacation(boolean canTakeVacation) {
+        logger.info("Заявление на отпуск {}", canTakeVacation? "одобрено": "отклонено");
+        this.canTakeVacation = canTakeVacation;
+    }
+}

2023-03/spring-06-bean-scopes-and-lifecycle/custom-scope-demo/src/main/resources/application.yml

@@ -0,0 +1,3 @@
+spring:
+  main:
+    allow-circular-references: true

2023-03/spring-06-bean-scopes-and-lifecycle/pom.xml

@@ -0,0 +1,19 @@
+<?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>advanced-config-class-work</artifactId>
+    <version>1.0</version>
+
+    <packaging>pom</packaging>
+
+    <modules>
+		<module>beans-scopes-exercise</module>
+		<module>beans-scopes-solution</module>
+		<module>beans-lifecycle-exercise</module>
+		<module>custom-scope-demo</module>
+    </modules>
+</project>