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Clean architecture initial commit

This commit is contained in:
Gilvan Ornelas Fernandes Filho 2020-12-20 21:29:30 -03:00
parent 17d2870daa
commit 3ef0ac4257
21 changed files with 506 additions and 0 deletions
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87
patterns/clean-architecture/pom.xml Normal file
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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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>clean-architecture</artifactId>
<version>1.0</version>
<name>clean-architecture</name>
<description>Project for clean architecture in java</description>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-boot-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../parent-boot-2</relativePath>
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-engine</artifactId>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
</dependency>
<dependency>
<groupId>org.junit.platform</groupId>
<artifactId>junit-platform-runner</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

40
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/CleanArchitectureApplication.java Normal file
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package com.baeldung.pattern.cleanarchitecture;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ClassPathBeanDefinitionScanner;
import org.springframework.core.type.classreading.MetadataReader;
import org.springframework.core.type.classreading.MetadataReaderFactory;
import org.springframework.core.type.filter.TypeFilter;
@SpringBootApplication
public class CleanArchitectureApplication {
public static void main(String[] args) {
SpringApplication.run(CleanArchitectureApplication.class);
}
@Bean
BeanFactoryPostProcessor beanFactoryPostProcessor(ApplicationContext beanRegistry) {
return beanFactory -> {
genericApplicationContext((BeanDefinitionRegistry) ((AnnotationConfigServletWebServerApplicationContext) beanRegistry).getBeanFactory());
};
}
void genericApplicationContext(BeanDefinitionRegistry beanRegistry) {
ClassPathBeanDefinitionScanner beanDefinitionScanner = new ClassPathBeanDefinitionScanner(beanRegistry);
beanDefinitionScanner.addIncludeFilter(removeModelAndEntitiesFilter());
beanDefinitionScanner.scan("com.baeldung.pattern.cleanarchitecture");
}
static TypeFilter removeModelAndEntitiesFilter() {
return (MetadataReader mr, MetadataReaderFactory mrf) -> !mr.getClassMetadata()
.getClassName()
.endsWith("Model");
}
}

30
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/CommonUser.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
class CommonUser implements User {
String name;
String password;
CommonUser(String name, String password) {
this.name = name;
this.password = password;
}
CommonUser() {
}
@Override
public boolean passwordIsValid() {
return password == null || password.length() > 5;
}
@Override
public String getName() {
return name;
}
@Override
public String getPassword() {
return password;
}
}

8
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/CommonUserFactory.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
class CommonUserFactory implements UserFactory {
@Override
public User create(String name, String password) {
return new CommonUser(name, password);
}
}

21
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/JpaUser.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
class JpaUser implements UserRegisterDsGateway {
final JpaUserRepository repository;
JpaUser(JpaUserRepository repository) {
this.repository = repository;
}
@Override
public boolean existsByName(String name) {
return repository.existsById(name);
}
@Override
public void save(UserDsRequestModel requestModel) {
UserDataMapper accountDataMapper = new UserDataMapper(requestModel.getName(), requestModel.getPassword(), requestModel.getCreationTime());
repository.save(accountDataMapper);
}
}

8
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/JpaUserRepository.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
interface JpaUserRepository extends JpaRepository<UserDataMapper, String> {
}

9
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/User.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
interface User {
boolean passwordIsValid();
String getName();
String getPassword();
}

53
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserDataMapper.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import java.time.LocalDateTime;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "user")
class UserDataMapper {
@Id
String name;
String password;
LocalDateTime creationTime;
public UserDataMapper() {
}
public UserDataMapper(String name, String password, LocalDateTime creationTime) {
super();
this.name = name;
this.password = password;
this.creationTime = creationTime;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public LocalDateTime getCreationTime() {
return creationTime;
}
public void setCreationTime(LocalDateTime creationTime) {
this.creationTime = creationTime;
}
}

41
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserDsRequestModel.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import java.time.LocalDateTime;
class UserDsRequestModel {
String name;
String password;
LocalDateTime creationTime;
public UserDsRequestModel(String name, String password, LocalDateTime creationTime) {
this.name = name;
this.password = password;
this.creationTime = creationTime;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public LocalDateTime getCreationTime() {
return creationTime;
}
public void setCreationTime(LocalDateTime creationTime) {
this.creationTime = creationTime;
}
}

5
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserFactory.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
interface UserFactory {
User create(String name, String password);
}

5
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserInputBoundary.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
public interface UserInputBoundary {
UserResponseModel create(UserRequestModel requestModel);
}

7
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserPresenter.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
interface UserPresenter {
UserResponseModel prepareSuccessView(UserResponseModel user);
UserResponseModel prepareFailView(String error);
}

20
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserRegisterController.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;
@RestController
class UserRegisterController {
final UserInputBoundary userInput;
UserRegisterController(UserInputBoundary accountGateway) {
this.userInput = accountGateway;
}
@PostMapping("/user")
UserResponseModel create(@RequestBody UserRequestModel requestModel) {
return userInput.create(requestModel);
}
}

7
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserRegisterDsGateway.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
interface UserRegisterDsGateway {
boolean existsByName(String identifier);
void save(UserDsRequestModel requestModel);
}

35
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserRegisterInteractor.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import java.time.LocalDateTime;
class UserRegisterInteractor implements UserInputBoundary {
final UserRegisterDsGateway userDsGateway;
final UserPresenter userPresenter;
final UserFactory userFactory;
UserRegisterInteractor(UserRegisterDsGateway userRegisterDfGateway, UserPresenter userPresenter,
UserFactory userFactory) {
this.userDsGateway = userRegisterDfGateway;
this.userPresenter = userPresenter;
this.userFactory = userFactory;
}
@Override
public UserResponseModel create(UserRequestModel requestModel) {
if (userDsGateway.existsByName(requestModel.getName())) {
return userPresenter.prepareFailView("User already exists.");
}
User user = userFactory.create(requestModel.getName(), requestModel.getPassword());
if (!user.passwordIsValid()) {
return userPresenter.prepareFailView("User password must have more than 5 characters.");
}
LocalDateTime now = LocalDateTime.now();
UserDsRequestModel userDsModel = new UserDsRequestModel(user.getName(), user.getPassword(), now);
userDsGateway.save(userDsModel);
UserResponseModel accountResponseModel = new UserResponseModel(user.getName(), now.toString());
return userPresenter.prepareSuccessView(accountResponseModel);
}
}

33
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserRequestModel.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
class UserRequestModel {
String name;
String password;
public UserRequestModel() {
super();
}
UserRequestModel(String name, String password) {
super();
this.name = name;
this.password = password;
}
String getName() {
return name;
}
void setName(String name) {
this.name = name;
}
String getPassword() {
return password;
}
void setPassword(String password) {
this.password = password;
}
}

22
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserResponseFormatter.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import org.springframework.http.HttpStatus;
import org.springframework.web.server.ResponseStatusException;
class UserResponseFormatter implements UserPresenter {
@Override
public UserResponseModel prepareSuccessView(UserResponseModel response) {
LocalDateTime responseTime = LocalDateTime.parse(response.getCreationTime());
response.setCreationTime(responseTime.format(DateTimeFormatter.ofPattern("hh:mm:ss")));
return response;
}
@Override
public UserResponseModel prepareFailView(String error) {
throw new ResponseStatusException(HttpStatus.CONFLICT, error);
}
}

29
patterns/clean-architecture/src/main/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserResponseModel.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
public class UserResponseModel {
String login;
String creationTime;
public UserResponseModel(String login, String creationTime) {
this.login = login;
this.creationTime = creationTime;
}
public String getLogin() {
return login;
}
public void setLogin(String login) {
this.login = login;
}
public String getCreationTime() {
return creationTime;
}
public void setCreationTime(String creationTime) {
this.creationTime = creationTime;
}
}

2
patterns/clean-architecture/src/main/resources/application.properties Normal file
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server.port=8080
server.error.include-message=always

29
patterns/clean-architecture/src/test/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserResponseFormatterTests.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import org.junit.jupiter.api.Test;
import org.springframework.web.server.ResponseStatusException;
import com.baeldung.pattern.cleanarchitecture.usercreation.UserResponseFormatter;
import com.baeldung.pattern.cleanarchitecture.usercreation.UserResponseModel;
class UserResponseFormatterTests {
UserResponseFormatter userResponseFormatter = new UserResponseFormatter();
@Test
void givenDateAnd3HourTime_whenPrepareSuccessView_thenReturnOnly3HourTime() {
UserResponseModel modelResponse = new UserResponseModel("baeldung", "2020-12-20T03:00:00.000");
UserResponseModel formattedResponse = userResponseFormatter.prepareSuccessView(modelResponse);
assertThat(formattedResponse.getCreationTime()).isEqualTo("03:00:00");
}
@Test
void whenPrepareFailView_thenThrowHttpConflictException() {
assertThatThrownBy(() -> userResponseFormatter.prepareFailView("Invalid password"))
.isInstanceOf(ResponseStatusException.class);
}
}

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patterns/clean-architecture/src/test/java/com/baeldung/pattern/cleanarchitecture/usercreation/UserUnitTest.java Normal file
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package com.baeldung.pattern.cleanarchitecture.usercreation;
import static org.assertj.core.api.Assertions.assertThat;
import org.junit.jupiter.api.Test;
class UserUnitTest {
@Test
void given123Password_whenPasswordIsNotValid_thenIsFalse() {
User user = new CommonUser("Baeldung", "123");
assertThat(user.passwordIsValid()).isFalse();
}
}