为 OpenFeign 客户端设置超时

Question

当我的假客户端尝试访问我的其他服务时，我试图为他们设置超时。为了测试我的断路器方法。这是我的基本设置。我正在使用 spring-boot 3.0.2 和 spring cloud 版本 2022.0.1

我有一个边缘服务项目，这是 pom.xml

<?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>3.0.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>e-service</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>e-service</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>17</java.version>
        <spring-cloud.version>2022.0.1</spring-cloud.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-circuitbreaker-resilience4j</artifactId>
        </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>
    <repositories>
        <repository>
            <id>netflix-candidates</id>
            <name>Netflix Candidates</name>
            <url>https://artifactory-oss.prod.netflix.net/artifactory/maven-oss-candidates</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

正如你所看到的，我有spring-cloud-starter-openfeign依赖项

这是我的配置application.properties

spring.application.name=edge-service
server.port=8080

feign.client.config.default.readTimeout=2000

使用此属性，feign.client.config.default.readTimeout=2000将 readTimeout 设置为 2 秒就足够了。但由于某种原因不起作用。

在我的服务中，我正在调用 FeignClient (ProxyServiceClient)

spring.application.name=edge-service
server.port=8080

feign.client.config.default.readTimeout=2000

在我的 ProxyService 中，我设置了 3 秒的睡眠时间来触发每个请求的超时

@Service
public class MovieServiceImpl implements MovieService {

    private final Logger logger = LoggerFactory.getLogger(MovieServiceImpl.class);

    @Autowired
    private ProxyServiceClient proxyServiceClient;

    @CircuitBreaker(name = "findHorroMovies", fallbackMethod = "findHorrorMoviesFallback")
    public ResponseDTO findAllHorroMovies() {

        ResponseDTO responseDTO = new ResponseDTO();

        List<MovieCatalogDTO> horroMovies = proxyServiceClient.findByGenre(Genre.HORROR);

        responseDTO.setMovieCatalogs(horroMovies);
        responseDTO.setMessage("Buuuuuhhhh");
        responseDTO.setSize(horroMovies.size());

        return responseDTO;
    }

    public ResponseDTO findHorrorMoviesFallback(Exception e) {
        logger.error(e.getMessage());
        ResponseDTO responseDTO = new ResponseDTO();
        List<MovieCatalogDTO> movieCatalogs = new ArrayList<>();
        responseDTO.setMovieCatalogs(movieCatalogs);
        responseDTO.setSize(0);
        responseDTO.setMessage("Buuuuuhhh (cached)");

        return responseDTO;

    }

}

我正在做一些测试，但它总是花费超过 2 秒而没有关闭连接。我不知道我做错了什么。希望你能帮我。

我尝试在 application.properties 文件中添加属性

feign.client.config.default.readTimeout=2000

在2秒内设置readTimeout，但不起作用...我不知道它是否必须与spring-boot或spring-cloud的版本有关。因为我记得这种方法曾经在较旧的项目中起作用。

Answer 1

好吧，我找到了解决方案。在openfeign文档中有一个解释，其中application.properties中的默认配置已更改

spring:
    cloud:
        openfeign:
            client:
                config:
                    feignName:
                        url: http://remote-service.com
                        connectTimeout: 5000
                        readTimeout: 5000
                        loggerLevel: full
                        errorDecoder: com.example.SimpleErrorDecoder
                        retryer: com.example.SimpleRetryer
                        defaultQueryParameters:
                            query: queryValue
                        defaultRequestHeaders:
                            header: headerValue
                        requestInterceptors:
                            - com.example.FooRequestInterceptor
                            - com.example.BarRequestInterceptor
                        responseInterceptor: com.example.BazResponseInterceptor
                        dismiss404: false
                        encoder: com.example.SimpleEncoder
                        decoder: com.example.SimpleDecoder
                        contract: com.example.SimpleContract
                        capabilities:
                            - com.example.FooCapability
                            - com.example.BarCapability
                        queryMapEncoder: com.example.SimpleQueryMapEncoder
                        micrometer.enabled: false

所以我必须更新这个属性

spring.cloud.openfeign.client.config.default.readTimeout=2000

而不是这个

feign.client.config.default.readTimeout=2000

这就是解决方案。我希望它对与我面临同样问题的人有所帮助：D。