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Merge pull request #9381 from sasam0320/BAEL-4011 

BAEL-4011: How to share DTO between microservices
This commit is contained in:
Eric Martin 2020-06-26 19:44:59 -05:00 committed by GitHub
parent b28a4dac7e 22b367c0cd
commit 0551872641
23 changed files with 625 additions and 0 deletions
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84
spring-cloud/spring-cloud-bootstrap/customer-service/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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>com.baeldung.customerservice</groupId>
<artifactId>customer-service</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>customer-service</name>
<packaging>jar</packaging>
<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>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</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-json</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>com.baeldung.orderservice</groupId>
<artifactId>order-client</artifactId>
<version>1.0.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>

14
spring-cloud/spring-cloud-bootstrap/customer-service/src/main/java/com/baeldung/customerservice/Customer.java Normal file
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package com.baeldung.customerservice;
import lombok.AllArgsConstructor;
import lombok.Data;
@Data
@AllArgsConstructor
public class Customer {
private int id;
private String firstName;
private String lastName;
}

25
spring-cloud/spring-cloud-bootstrap/customer-service/src/main/java/com/baeldung/customerservice/CustomerApplication.java Normal file
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package com.baeldung.customerservice;
import com.baeldung.orderservice.client.OrderClient;
import com.baeldung.orderservice.client.OrderClientImpl;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
/**
* Spring Boot application starter class
*/
@SpringBootApplication
public class CustomerApplication {
public static void main(String[] args) {
SpringApplication.run(CustomerApplication.class, args);
}
@Bean
public OrderClient getOrderClient() {
return new OrderClientImpl(new RestTemplateBuilder());
}
}

56
spring-cloud/spring-cloud-bootstrap/customer-service/src/main/java/com/baeldung/customerservice/CustomerService.java Normal file
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package com.baeldung.customerservice;
import com.baeldung.orderservice.client.OrderClient;
import com.baeldung.orderservice.client.OrderDTO;
import com.baeldung.orderservice.client.OrderResponse;
import org.springframework.beans.factory.annotation.Autowired;
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.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
@RestController
public class CustomerService {
@Autowired
private OrderClient orderClient;
private List<Customer> customers = Arrays.asList(
new Customer(1, "John", "Smith"),
new Customer(2, "Deny", "Dominic"));
@GetMapping
public List<Customer> getAllCustomers() {
return customers;
}
@GetMapping("/{id}")
public Customer getCustomerById(@PathVariable int id) {
return customers.stream()
.filter(customer -> customer.getId() == id)
.findFirst()
.orElseThrow(IllegalArgumentException::new);
}
@PostMapping(value = "/order")
public String sendOrder(@RequestBody Map<String, Object> body) {
OrderDTO dto = new OrderDTO();
dto.setCustomerId((Integer) body.get("customerId"));
dto.setItemId((String) body.get("itemId"));
OrderResponse response = orderClient.order(dto);
return response.getStatus();
}
}

4
spring-cloud/spring-cloud-bootstrap/customer-service/src/main/resources/application.properties Normal file
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#Spring Boot server configuration
server.servlet.context-path=/customer-service
server.port=8001

2
spring-cloud/spring-cloud-bootstrap/customer-service/src/test/resources/application.properties Normal file
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local.server.port=8001
server.servlet.context-path=/customer-service

18
spring-cloud/spring-cloud-bootstrap/order-service/order-client/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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>com.baeldung.orderservice</groupId>
<artifactId>order-client</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>order-client</name>
<description>Order service client module</description>
<url>http://projects.spring.io/spring-boot/</url>
<parent>
<groupId>com.baeldung.orderservice</groupId>
<artifactId>order-service</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
</project>

6
spring-cloud/spring-cloud-bootstrap/order-service/order-client/src/main/java/com/baeldung/orderservice/client/OrderClient.java Normal file
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package com.baeldung.orderservice.client;
public interface OrderClient {
OrderResponse order(OrderDTO orderDTO);
}

35
spring-cloud/spring-cloud-bootstrap/order-service/order-client/src/main/java/com/baeldung/orderservice/client/OrderClientImpl.java Normal file
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package com.baeldung.orderservice.client;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;
@Component
public class OrderClientImpl implements OrderClient {
private RestTemplate restTemplate;
public OrderClientImpl(RestTemplateBuilder builder) {
this.restTemplate = builder.build();
}
@Override
public OrderResponse order(OrderDTO orderDTO) {
String serviceUrl = "http://localhost:8002/order-service";
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<OrderDTO> request = new HttpEntity<>(orderDTO, headers);
OrderResponse orderResponse = restTemplate.postForObject(serviceUrl + "/create", request, OrderResponse.class);
return orderResponse;
}
}

16
spring-cloud/spring-cloud-bootstrap/order-service/order-client/src/main/java/com/baeldung/orderservice/client/OrderDTO.java Normal file
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package com.baeldung.orderservice.client;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class OrderDTO {
private int customerId;
private String itemId;
}

15
spring-cloud/spring-cloud-bootstrap/order-service/order-client/src/main/java/com/baeldung/orderservice/client/OrderResponse.java Normal file
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package com.baeldung.orderservice.client;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class OrderResponse {
private int orderId;
private String productId;
private String status;
}

1
spring-cloud/spring-cloud-bootstrap/order-service/order-client/src/main/resources/application.properties Normal file
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server.port=8002

23
spring-cloud/spring-cloud-bootstrap/order-service/order-server/pom.xml Normal file
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@ -0,0 +1,23 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://maven.apache.org/POM/4.0.0"
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>com.baeldung.orderservice</groupId>
<artifactId>order-server</artifactId>
<version>1.0.0-SNAPSHOT</version>
<parent>
<artifactId>order-service</artifactId>
<groupId>com.baeldung.orderservice</groupId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>com.baeldung.orderservice</groupId>
<artifactId>order-client</artifactId>
<version>1.0.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
</dependencies>
</project>

18
spring-cloud/spring-cloud-bootstrap/order-service/order-server/src/main/java/com/baeldung/orderservice/Order.java Normal file
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@ -0,0 +1,18 @@
package com.baeldung.orderservice;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Order {
private Integer id;
private Integer customerId;
private String itemId;
private String date;
}

17
spring-cloud/spring-cloud-bootstrap/order-service/order-server/src/main/java/com/baeldung/orderservice/OrderApplication.java Normal file
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@ -0,0 +1,17 @@
package com.baeldung.orderservice;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
/**
* Spring Boot application starter class
*/
@SpringBootApplication
public class OrderApplication {
public static void main(String[] args) {
SpringApplication.run(OrderApplication.class, args);
}
}

54
spring-cloud/spring-cloud-bootstrap/order-service/order-server/src/main/java/com/baeldung/orderservice/OrderService.java Normal file
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@ -0,0 +1,54 @@
package com.baeldung.orderservice;
import com.baeldung.orderservice.client.OrderDTO;
import com.baeldung.orderservice.client.OrderResponse;
import org.apache.commons.lang.time.DateFormatUtils;
import org.springframework.beans.factory.annotation.Autowired;
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.RequestBody;
import org.springframework.web.bind.annotation.RestController;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;
@RestController
public class OrderService {
private List<Order> orders = Arrays.asList(
new Order(1, 1, "A101", "2020/02/14"),
new Order(2, 1, "A101", "2020/02/14"),
new Order(3, 2, "A150", "2020/02/17"));
@GetMapping
public List<Order> getAllOrders() {
return orders;
}
@GetMapping("/{id}")
public List<Order> getOrdersByCustomer(@PathVariable int id) {
return orders.stream()
.filter(order -> order.getCustomerId() == id).collect(Collectors.toList());
}
@PostMapping("/create")
public OrderResponse createOrder(@RequestBody OrderDTO request) {
int lastIndex = orders.size();
Order order = new Order();
order.setId(lastIndex + 1);
order.setCustomerId(request.getCustomerId());
order.setItemId(request.getItemId());
String date = DateFormatUtils.format(new Date(), "yyyy/MM/dd");
order.setDate(date);
return new OrderResponse(order.getId(), order.getItemId(), "CREATED");
}
}

4
spring-cloud/spring-cloud-bootstrap/order-service/order-server/src/main/resources/application.properties Normal file
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#Spring Boot server configuration
server.servlet.context-path=/order-service
server.port=8002

123
spring-cloud/spring-cloud-bootstrap/order-service/pom.xml Normal file
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@ -0,0 +1,123 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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>com.baeldung.orderservice</groupId>
<artifactId>order-service</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>order-service</name>
<packaging>pom</packaging>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-boot-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../../parent-boot-2</relativePath>
</parent>
<modules>
<module>order-client</module>
<module>order-server</module>
</modules>
<properties>
<java.version>1.8</java.version>
<commons-lang.version>2.6</commons-lang.version>
<structure-maven.version>0.0.2</structure-maven.version>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<orderservice.mainclass>com.baeldung.orderservice.OrderApplication</orderservice.mainclass>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring-boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>${commons-lang.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.qunix</groupId>
<artifactId>structure-maven-plugin</artifactId>
<version>${structure-maven.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-json</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>${orderservice.mainclass}</mainClass>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
<configuration>
<classifier>exec</classifier>
</configuration>
</execution>
<execution>
<id>start-application</id>
<configuration>
<mainClass>com.baeldung.orderservice.OrderApplication</mainClass>
<classesDirectory>../order-server/target/classes</classesDirectory>
</configuration>
<goals>
<goal>start</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.qunix</groupId>
<artifactId>structure-maven-plugin</artifactId>
<version>${structure-maven.version}</version>
<inherited>false</inherited>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>modules</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>

3
spring-cloud/spring-cloud-bootstrap/pom.xml
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@ -20,6 +20,9 @@
<module>svc-book</module> <module>svc-book</module>
<module>svc-rating</module> <module>svc-rating</module>
<module>zipkin</module> <module>zipkin</module>
<module>customer-service</module>
<module>order-service</module>
<module>shared-dto</module>
</modules> </modules>
</project> </project>

60
spring-cloud/spring-cloud-bootstrap/shared-dto/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
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>com.baeldung</groupId>
<artifactId>shared-dto</artifactId>
<version>1.0.0-SNAPSHOT</version>
<name>shared-dto</name>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-boot-2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../../../parent-boot-2</relativePath>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<structure-maven.version>0.0.2</structure-maven.version>
</properties>
<dependencies>
<dependency>
<groupId>org.qunix</groupId>
<artifactId>structure-maven-plugin</artifactId>
<version>${structure-maven.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.qunix</groupId>
<artifactId>structure-maven-plugin</artifactId>
<version>${structure-maven.version}</version>
<inherited>false</inherited>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>files</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>

16
spring-cloud/spring-cloud-bootstrap/shared-dto/src/main/java/com/baeldung/deliverydto/CustomerDTO.java Normal file
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package com.baeldung.deliverydto;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class CustomerDTO {
private String firstName;
private String lastName;
private String homeAddress;
private String contactNumber;
// constructor, getters, setters
}

15
spring-cloud/spring-cloud-bootstrap/shared-dto/src/main/java/com/baeldung/shared/CustomerDTO.java Normal file
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package com.baeldung.shared;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class CustomerDTO {
private String firstName;
private String lastName;
private String cardNumber;
// constructor, getters, setters
}

16
spring-cloud/spring-cloud-bootstrap/shared-dto/src/main/java/com/baeldung/shared/OrderDTO.java Normal file
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package com.baeldung.shared;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class OrderDTO {
private int customerId;
private String itemId;
}