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Initial implementation of BFF, search-api integration and eureka

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This commit is contained in:
bivashy
2025-09-07 01:05:21 +05:00
parent 2a37a72a3b
commit 413b1293a8
13 changed files with 905 additions and 94 deletions
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112
main-app/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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>3.5.5</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.backend.vue.bff.service</groupId>
<artifactId>anyame-vue-bff</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>anyame-vue-bff</name>
<description>BFF for Vue frontend</description>
<url />
<licenses>
<license />
</licenses>
<developers>
<developer />
</developers>
<scm>
<connection />
<developerConnection />
<tag />
<url />
</scm>
<properties>
<java.version>21</java.version>
<retrofit.version>3.0.0</retrofit.version>
<spring-dotenv.version>4.0.0</spring-dotenv.version>
<springdoc-openapi-starter.version>2.8.9</springdoc-openapi-starter.version>
<spring-cloud.version>2025.0.0</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-circuitbreaker-resilience4j</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>com.squareup.retrofit2</groupId>
<artifactId>converter-jackson</artifactId>
<version>${retrofit.version}</version>
</dependency>
<dependency>
<groupId>me.paulschwarz</groupId>
<artifactId>spring-dotenv</artifactId>
<version>${spring-dotenv.version}</version>
</dependency>
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
<version>${springdoc-openapi-starter.version}</version>
</dependency>
<dependency>
<groupId>com.backend.vue.bff.service</groupId>
<artifactId>anyame-kodik-search-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

17
main-app/src/main/java/com/backend/vue/bff/service/AnyameVueBffApplication.java Normal file
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package com.backend.vue.bff.service;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableCaching
@EnableEurekaServer
public class AnyameVueBffApplication {
public static void main(String[] args) {
SpringApplication.run(AnyameVueBffApplication.class, args);
}
}

107
main-app/src/main/java/com/backend/vue/bff/service/config/GlobalExceptionHandler.java Normal file
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package com.backend.vue.bff.service.config;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.BeanCreationException;
import org.springframework.beans.factory.UnsatisfiedDependencyException;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import com.backend.vue.bff.service.exception.ServiceUnavailableException;
@RestControllerAdvice
public class GlobalExceptionHandler {
public static final Logger logger = LoggerFactory.getLogger("GlobalExceptionHandler");
@ExceptionHandler({ UnsatisfiedDependencyException.class, BeanCreationException.class,
ServiceUnavailableException.class })
public ResponseEntity<ErrorResponse> handleServiceUnavailable(ServiceUnavailableException e) {
ErrorResponse error = new ErrorResponse(
"SERVICE_UNAVAILABLE",
e.getMessage(),
HttpStatus.SERVICE_UNAVAILABLE.value());
return ResponseEntity.status(HttpStatus.SERVICE_UNAVAILABLE).body(error);
}
@ExceptionHandler(IOException.class)
public ResponseEntity<ErrorResponse> handleIOException(IOException e) {
ErrorResponse error = new ErrorResponse(
"API_CALL_FAILED",
"Failed to communicate with external service: " + e.getMessage(),
HttpStatus.INTERNAL_SERVER_ERROR.value());
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
}
@ExceptionHandler(Exception.class)
public ResponseEntity<ErrorResponse> handleGenericException(Exception e) {
logger.error("Exception type: {}", e.getClass().getSimpleName());
logger.error("Exception message: {}", e.getMessage());
Throwable cause = e.getCause();
while (cause != null) {
logger.error("Cause type: {}", cause.getClass().getSimpleName());
if (cause instanceof ServiceUnavailableException) {
return handleServiceUnavailable((ServiceUnavailableException) cause);
}
cause = cause.getCause();
}
ErrorResponse error = new ErrorResponse(
"INTERNAL_ERROR",
"An unexpected error occurred",
HttpStatus.INTERNAL_SERVER_ERROR.value());
return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(error);
}
public static class ErrorResponse {
private String code;
private String message;
private int status;
private long timestamp;
public ErrorResponse(String code, String message, int status) {
this.code = code;
this.message = message;
this.status = status;
this.timestamp = System.currentTimeMillis();
}
// Getters and setters
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public long getTimestamp() {
return timestamp;
}
public void setTimestamp(long timestamp) {
this.timestamp = timestamp;
}
}
}

90
main-app/src/main/java/com/backend/vue/bff/service/config/SearchApiClientConfiguration.java Normal file
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package com.backend.vue.bff.service.config;
import java.util.List;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Lazy;
import com.backend.search.kodik.ApiClient;
import com.backend.search.kodik.JSON;
import com.backend.search.kodik.api.SearchControllerApi;
import com.backend.vue.bff.service.exception.ServiceUnavailableException;
import retrofit2.Retrofit;
import retrofit2.converter.jackson.JacksonConverterFactory;
import retrofit2.converter.scalars.ScalarsConverterFactory;
@Configuration
@EnableDiscoveryClient
public class SearchApiClientConfiguration {
private final DiscoveryClient discoveryClient;
public SearchApiClientConfiguration(DiscoveryClient discoveryClient) {
this.discoveryClient = discoveryClient;
}
@Bean
@Lazy
public FactoryBean<ApiClient> apiClientFactory() {
return new ApiClientFactoryBean();
}
@Bean
@Lazy
public SearchControllerApi searchApi(ApiClient apiClient) {
return apiClient.createService(SearchControllerApi.class);
}
private class ApiClientFactoryBean implements FactoryBean<ApiClient> {
@Override
public ApiClient getObject() throws Exception {
ApiClient client = new ApiClient();
String baseUrl = resolveServiceUrl("ANYAME-KODIK-SEARCH-BACKEND");
JSON json = new JSON();
Retrofit.Builder adapterBuilder = new Retrofit.Builder()
.baseUrl(baseUrl)
.addConverterFactory(ScalarsConverterFactory.create())
.addConverterFactory(JacksonConverterFactory.create(json.getMapper()));
client.setAdapterBuilder(adapterBuilder);
return client;
}
@Override
public Class<?> getObjectType() {
return ApiClient.class;
}
@Override
public boolean isSingleton() {
return true;
}
private String resolveServiceUrl(String serviceName) {
List<ServiceInstance> instances = discoveryClient.getInstances(serviceName);
if (instances.isEmpty()) {
throw new ServiceUnavailableException();
}
ServiceInstance instance = instances.get(0);
String baseUrl = instance.getUri().toString();
if (!baseUrl.endsWith("/")) {
baseUrl = baseUrl + "/";
}
return baseUrl;
}
}
}

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main-app/src/main/java/com/backend/vue/bff/service/controller/TestController.java Normal file
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package com.backend.vue.bff.service.controller;
import java.io.IOException;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.backend.search.kodik.api.SearchControllerApi;
@RestController
public class TestController {
private final ObjectProvider<SearchControllerApi> controllerApiFactory;
public TestController(ObjectProvider<SearchControllerApi> controllerApiFactory) {
this.controllerApiFactory = controllerApiFactory;
}
@GetMapping("/test")
public String test() throws IOException {
SearchControllerApi api = controllerApiFactory.getObject();
return Integer.toString(api.search("Шарлотта").execute().body().getResults().size());
}
}

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main-app/src/main/java/com/backend/vue/bff/service/exception/ServiceUnavailableException.java Normal file
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package com.backend.vue.bff.service.exception;
public class ServiceUnavailableException extends RuntimeException {
public ServiceUnavailableException() {
super("Service Unavailable");
}
}

2
main-app/src/main/resources/application.properties Normal file
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spring.application.name=anyame-vue-bff
eureka.client.serviceUrl.defaultZone=http://localhost:8080/eureka

13
main-app/src/test/java/com/backend/vue/bff/service/AnyameVueBffApplicationTests.java Normal file
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package com.backend.vue.bff.service;
import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
class AnyameVueBffApplicationTests {
@Test
void contextLoads() {
}
}