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Adnane Miliari
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📚implement OpenAPI-Swagger documentation across microservices
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19 files changed

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-21
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19 files changed

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-21
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‎common/pom.xml‎

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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
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</dependency>
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<dependency>
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<groupId>io.micrometer</groupId>
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<artifactId>micrometer-tracing-bridge-brave</artifactId>
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</dependency>
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<dependency>
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<groupId>io.zipkin.reporter2</groupId>
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<artifactId>zipkin-reporter-brave</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-actuator</artifactId>
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</dependency>
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</dependencies>
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</project>

‎common/src/main/java/swagger/BaseController.java‎

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package swagger;
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import lombok.experimental.UtilityClass;
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@UtilityClass
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public class BaseController {
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public static final String CUSTOMER_TAG = "Customer Management";
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public static final String CUSTOMER_DESCRIPTION = "Operations about customers including orders and payments";
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public static final String PRODUCT_TAG = "Product Management";
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public static final String PRODUCT_DESCRIPTION = "Operations for managing products catalog and inventory";
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public static final String ORDER_TAG = "Order Management";
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public static final String ORDER_DESCRIPTION = "Operations for managing customer orders and order processing";
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public static final String PAYMENT_TAG = "Payment Management";
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public static final String PAYMENT_DESCRIPTION = "Operations for managing payments and transactions";
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public static final String NOTIFICATION_TAG = "Notification Management";
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public static final String NOTIFICATION_DESCRIPTION = "Operations for managing notifications and communication with customers";
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}

‎common/src/main/java/swagger/OpenAPIConfig.java‎

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package swagger;
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import io.swagger.v3.oas.models.ExternalDocumentation;
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import io.swagger.v3.oas.models.OpenAPI;
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import io.swagger.v3.oas.models.info.Contact;
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import io.swagger.v3.oas.models.info.Info;
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import io.swagger.v3.oas.models.info.License;
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import org.springframework.boot.context.properties.EnableConfigurationProperties;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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@Configuration
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@EnableConfigurationProperties(OpenAPIProperties.class)
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public class OpenAPIConfig {
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private final OpenAPIProperties properties;
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public OpenAPIConfig(OpenAPIProperties properties) {
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this.properties = properties;
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}
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@Bean
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public OpenAPI customOpenAPI() {
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return new OpenAPI()
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.info(new Info()
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.title(properties.getTitle())
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.version(properties.getVersion())
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.description(properties.getDescription())
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.contact(new Contact()
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.name(properties.getContact().getName())
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.email(properties.getContact().getEmail())
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.url(properties.getContact().getUrl()))
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.license(new License()
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.name(properties.getLicense().getName())
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.url(properties.getLicense().getUrl())))
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.externalDocs(new ExternalDocumentation()
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.description(properties.getExternalDocs().getDescription())
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.url(properties.getExternalDocs().getUrl()));
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}
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}

‎common/src/main/java/swagger/OpenAPIProperties.java‎

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package swagger;
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import lombok.Getter;
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import lombok.Setter;
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import org.springframework.boot.context.properties.ConfigurationProperties;
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@ConfigurationProperties(prefix = "openapi")
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@Getter @Setter
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public class OpenAPIProperties {
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private String title;
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private String version;
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private String description;
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private Contact contact = new Contact();
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private License license = new License();
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private ExternalDocs externalDocs = new ExternalDocs();
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@Getter
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@Setter
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public static class Contact {
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private String name;
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private String email;
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private String url;
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}
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@Getter
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@Setter
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public static class License {
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private String name;
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private String url;
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}
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@Getter
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@Setter
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public static class ExternalDocs {
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private String description;
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private String url;
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}
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}

‎common/src/main/resources/application-openapi.yml‎

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openapi:
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title: Microservices API Documentation
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version: 1.0
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description: Documentation for all microservices endpoints
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contact:
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name: Adnane MILIARI
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email: [email protected]
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url: https://github.com/miliariadnane
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license:
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name: Apache 2.0
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url: http://www.apache.org/licenses/LICENSE-2.0.html
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external-docs:
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description: Project Documentation
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url: https://github.com/miliariadnane/demo-microservices

‎customer/src/main/java/dev/nano/customer/CustomerConstant.java‎

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package dev.nano.customer;
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import lombok.experimental.UtilityClass;
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@UtilityClass
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public class CustomerConstant {
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public static final String CUSTOMER_URI_REST_API = "/api/v1/customers";
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public static final String CUSTOMER_NOT_FOUND = "Customer with ID %d not found";

‎customer/src/main/java/dev/nano/customer/CustomerController.java‎

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import dev.nano.clients.order.OrderResponse;
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import dev.nano.clients.payment.PaymentRequest;
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import dev.nano.clients.payment.PaymentResponse;
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import io.swagger.v3.oas.annotations.Operation;
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import io.swagger.v3.oas.annotations.media.ArraySchema;
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import io.swagger.v3.oas.annotations.media.Content;
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import io.swagger.v3.oas.annotations.media.Schema;
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import io.swagger.v3.oas.annotations.responses.ApiResponse;
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import io.swagger.v3.oas.annotations.responses.ApiResponses;
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import io.swagger.v3.oas.annotations.tags.Tag;
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import jakarta.validation.Valid;
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import lombok.AllArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.bind.annotation.*;
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import swagger.BaseController;
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import java.util.List;
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@RestController
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@RequestMapping(path = CUSTOMER_URI_REST_API)
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@Tag(name = BaseController.CUSTOMER_TAG, description = BaseController.CUSTOMER_DESCRIPTION)
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@AllArgsConstructor @Slf4j
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public class CustomerController {
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private final CustomerService customerService;
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26-
@GetMapping(path = "/{customerId}")
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@Operation(
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summary = "Get customer by ID",
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description = "Retrieve a customer's details using their unique identifier"
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)
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@ApiResponses(value = {
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@ApiResponse(
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responseCode = "200",
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description = "Customer found successfully",
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content = @Content(
44+
mediaType = "application/json",
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schema = @Schema(implementation = CustomerDTO.class)
46+
)
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),
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@ApiResponse(responseCode = "404", description = "Customer not found"),
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@ApiResponse(responseCode = "500", description = "Internal server error")
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})
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@GetMapping("/{customerId}")
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public ResponseEntity<CustomerDTO> getCustomer(@PathVariable("customerId") Long customerId) {
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log.info("Retrieving customer with ID: {}", customerId);
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return ResponseEntity.ok(customerService.getCustomer(customerId));
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}
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@Operation(
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summary = "Get all customers",
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description = "Retrieve a list of all customers in the system"
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)
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@ApiResponses(value = {
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@ApiResponse(
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responseCode = "200",
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description = "List of customers retrieved successfully",
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content = @Content(
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mediaType = "application/json",
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array = @ArraySchema(schema = @Schema(implementation = CustomerDTO.class))
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)
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),
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@ApiResponse(responseCode = "500", description = "Internal server error")
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})
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@GetMapping
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public ResponseEntity<List<CustomerDTO>> getAllCustomers() {
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log.info("Retrieving all customers");
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return ResponseEntity.ok(customerService.getAllCustomers());
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}
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@Operation(
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summary = "Create new customer",
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description = "Register a new customer in the system with their details"
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)
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@ApiResponses(value = {
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@ApiResponse(
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responseCode = "201",
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description = "Customer created successfully",
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content = @Content(
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mediaType = "application/json",
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schema = @Schema(implementation = CustomerDTO.class)
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)
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),
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@ApiResponse(responseCode = "400", description = "Invalid input data"),
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@ApiResponse(responseCode = "500", description = "Internal server error")
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})
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@PostMapping("/add")
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public ResponseEntity<CustomerDTO> createCustomer(@Valid @RequestBody CustomerDTO customerDTO) {
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log.info("Creating new customer: {}", customerDTO);
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);
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}
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@Operation(
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summary = "Update customer",
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description = "Update an existing customer's information"
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)
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@ApiResponses(value = {
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@ApiResponse(
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responseCode = "200",
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description = "Customer updated successfully",
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content = @Content(
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mediaType = "application/json",
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schema = @Schema(implementation = CustomerDTO.class)
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)
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),
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@ApiResponse(responseCode = "400", description = "Invalid input data"),
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@ApiResponse(responseCode = "404", description = "Customer not found"),
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@ApiResponse(responseCode = "500", description = "Internal server error")
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})
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@PutMapping("/{customerId}")
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public ResponseEntity<CustomerDTO> updateCustomer(
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@PathVariable Long customerId,
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return ResponseEntity.ok(customerService.updateCustomer(customerId, customerDTO));
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}
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@Operation(
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summary = "Delete customer",
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description = "Remove a customer from the database"
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)
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@ApiResponses(value = {
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@ApiResponse(responseCode = "204", description = "Customer deleted successfully"),
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@ApiResponse(responseCode = "404", description = "Customer not found"),
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@ApiResponse(responseCode = "500", description = "Internal server error")
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})
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@DeleteMapping("/{customerId}")
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public ResponseEntity<Void> deleteCustomer(@PathVariable Long customerId) {
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log.info("Deleting customer with ID: {}", customerId);
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customerService.deleteCustomer(customerId);
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return ResponseEntity.noContent().build();
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}
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@Operation(
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summary = "Create customer order",
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description = "Place a new order for an existing customer"
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)
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@ApiResponses(value = {
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@ApiResponse(
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responseCode = "201",
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description = "Order created successfully",
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content = @Content(
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mediaType = "application/json",
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schema = @Schema(implementation = OrderResponse.class)
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)
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),
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@ApiResponse(responseCode = "400", description = "Invalid order data"),
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@ApiResponse(responseCode = "404", description = "Customer not found"),
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@ApiResponse(responseCode = "500", description = "Internal server error")
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})
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@PostMapping("/orders")
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public ResponseEntity<OrderResponse> customerOrders(@Valid @RequestBody OrderRequest orderRequest) {
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log.info("Processing order for customer: {}", orderRequest);
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);
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}
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@Operation(
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summary = "Process customer payment",
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description = "Process a payment for a customer's order"
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)
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@ApiResponses(value = {
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@ApiResponse(
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responseCode = "201",
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description = "Payment processed successfully",
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content = @Content(
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mediaType = "application/json",
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schema = @Schema(implementation = PaymentResponse.class)
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)
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),
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@ApiResponse(responseCode = "400", description = "Invalid payment data"),
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@ApiResponse(responseCode = "404", description = "Customer or order not found"),
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@ApiResponse(responseCode = "500", description = "Internal server error")
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})
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@PostMapping("/payment")
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public ResponseEntity<PaymentResponse> customerPayment(@Valid @RequestBody PaymentRequest paymentRequest) {
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log.info("Processing payment for customer: {}", paymentRequest);

‎gateway/pom.xml‎

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<groupId>io.zipkin.reporter2</groupId>
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<artifactId>zipkin-reporter-brave</artifactId>
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</dependency>
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<dependency>
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<groupId>dev.nano</groupId>
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<artifactId>feign-clients</artifactId>
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<version>1.0-SNAPSHOT</version>
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<scope>compile</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>

‎gateway/src/main/java/dev/nano/gateway/GatewayApplication.java‎

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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
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import org.springframework.cloud.openfeign.EnableFeignClients;
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import org.springframework.context.annotation.PropertySource;
8+
import org.springframework.context.annotation.PropertySources;
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@SpringBootApplication
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@EnableDiscoveryClient
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@EnableFeignClients(
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basePackages = "dev.nano.clients"
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)
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@PropertySources({
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@PropertySource("classpath:clients-${spring.profiles.active}.properties")
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})
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public class GatewayApplication {
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public static void main(String[] args) {
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SpringApplication.run(GatewayApplication.class, args);

‎gateway/src/main/resources/application.yml‎

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#Server
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server:
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port: 8006
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#Management
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management:
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endpoints:
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endpoint:
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health:
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show-details: always
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#Spring
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spring:
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application:

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