Java 假注册-春季云-更改目标,无彩带覆盖 介绍
我想能够有两个不同的春天配置文件,并根据配置文件更改为我们的外国建设者硬编码地址 目前正在进行的工作包括:Java 假注册-春季云-更改目标,无彩带覆盖 介绍,java,spring-cloud,spring-cloud-feign,feign,openfeign,Java,Spring Cloud,Spring Cloud Feign,Feign,Openfeign,我想能够有两个不同的春天配置文件,并根据配置文件更改为我们的外国建设者硬编码地址 目前正在进行的工作包括: ab-document-store.ribbon.NIWSServerListClassName:com.netflix.loadbalancer.ConfigurationBasedServerList ab-document-store.ribbon.listOfServers: localhost:8025 returnbuilder.target(cls,“http://”+se
ab-document-store.ribbon.NIWSServerListClassName:com.netflix.loadbalancer.ConfigurationBasedServerList
ab-document-store.ribbon.listOfServers: localhost:8025
returnbuilder.target(cls,“http://”+serviceName)代码>
但实际上,我想做以下工作,并对地址进行概述:
returnbuilder.target(cls)http://our-server:8009/“+服务名称)代码>
为什么?
有时我们不想在开发环境中运行所有服务。此外,有些服务有时只能通过zuul网关提供
因此,我们在不同的情况和条件下运行相同的代码
技术细节
我们有以下代码用于构建我们的外国客户
过去我们一直在使用@FeignClient
注释,但最近我们决定开始手动构建我们的FeignClient
示例如下:
@FeignClient(name = "ab-document-store", configuration = MultiPartSupportConfiguration.class, fallback = DocumentStoreFallback.class)
我们使用以下命令调用假注册器类:
return registerFeignClient(DocumentStoreClient.class, true);
@RequiredArgsConstructor
//@Component
@Slf4j
public class FeignRegistrar {
@Autowired
private Decoder decoder;
@Autowired
private Encoder encoder;
@Autowired
private Client client;
@Autowired
private Contract feignContract;
@Autowired
private ObjectFactory<HttpMessageConverters> messageConverters;
@Autowired
private List<RequestInterceptor> interceptors;
public <T> T register(Class<T> cls, String serviceName, boolean isDocumentStore) {
if(isDocumentStore){
encoder = new MultipartFormEncoder(new SpringEncoder(messageConverters));
}
//Client trustSSLSockets = new Client.Default(getSSLSocketFactory(), new NoopHostnameVerifier());
Feign.Builder builder = Feign.builder()
.client(client)
.encoder(encoder)
.decoder(decoder)
.contract(feignContract)
.logger(new Slf4Logger())
.logLevel(Logger.Level.HEADERS);
builder.requestInterceptor(new RequestInterceptor() {
@Override
public void apply(RequestTemplate template) {
template.header("X-Service-Name", serviceName);
}
});
for(RequestInterceptor interceptor : interceptors) {
builder.requestInterceptor(interceptor);
}
log.debug("Registering {} - as feign proxy ", serviceName);
return builder.target(cls, "http://" + serviceName);
}
public static class Slf4Logger extends Logger {
@Override
protected void log(String configKey, String format, Object... args) {
log.info("{} - {}", configKey, args);
}
}
}
不幸的是,服务器列表对我们来说还不够。我们也希望能够分配一个目录/路径。比如:
ab-document-store.ribbon.listOfServers:localhost:8025/ab-document-store
其他解决方法
我曾考虑过使用一个假拦截器,在所有请求(如X-SERVICE-NAME
)中偷偷插入一个头。然后,我们可以将所有服务指向一个地址(例如localhost:9001),并将这些请求转发/代理到localhost:9001/X-SERVICE-NAME
但是,我更喜欢更简单的解决方案,例如:
ab-document-store.ribbon.listOfServers: localhost:8025/ab-document-store
但这不起作用:(引言
我找到了一个解决方案,使用一个检测头的代理。
因此,我在java端有一个假拦截器,它将头x-service-name
附加到每个假请求
我还有一个NodeJS代理,它分析请求,查找x-service-name
,然后将请求重新写入:x-service-name
/原始请求路径
这使我可以在zuul网关后面拥有所有的微服务,但也可以使用eureka over ride访问它们
Java伪拦截器
NodeJS代理
在本例中,我的zuul网关(或另一个代理)位于localhost:9001上。
我正在收听localhost:1200
let enableProxyForJava = process.env.ENABLE_PROXY_FOR_JAVA;
if (enableProxyForJava != undefined && enableProxyForJava.toLowerCase() === 'true') {
var httpProxyJava = require('http-proxy');
var proxyJava = httpProxyJava.createProxy();
gutil.log( gutil.colors.green('Enabling Proxy for Java. Set your Eureka overrides to localhost:1200.') );
require('http').createServer(function(req, res) {
console.log("req.headers['x-service-name'] = " + req.headers['x-service-name']);
console.log("Before req.url:"+ req.url);
if( req.headers['x-service-name'] != undefined){
let change = req.headers['x-service-name'] +req.url;
console.log("After req.url:"+ change);
req.url = change;
}
proxyJava.web(req, res, {
target: 'http://localhost:9001/'
});
}).listen(1200);
}
Java应用程序中具有外部客户端的属性文件
let enableProxyForJava = process.env.ENABLE_PROXY_FOR_JAVA;
if (enableProxyForJava != undefined && enableProxyForJava.toLowerCase() === 'true') {
var httpProxyJava = require('http-proxy');
var proxyJava = httpProxyJava.createProxy();
gutil.log( gutil.colors.green('Enabling Proxy for Java. Set your Eureka overrides to localhost:1200.') );
require('http').createServer(function(req, res) {
console.log("req.headers['x-service-name'] = " + req.headers['x-service-name']);
console.log("Before req.url:"+ req.url);
if( req.headers['x-service-name'] != undefined){
let change = req.headers['x-service-name'] +req.url;
console.log("After req.url:"+ change);
req.url = change;
}
proxyJava.web(req, res, {
target: 'http://localhost:9001/'
});
}).listen(1200);
}
mbak-microservice1.ribbon.NIWSServerListClassName:com.netflix.loadbalancer.ConfigurationBasedServerList
mbak-microservice1.ribbon.listOfServers: localhost:1200
mbak-microservice2.ribbon.NIWSServerListClassName:com.netflix.loadbalancer.ConfigurationBasedServerList
mbak-microservice2.ribbon.listOfServers: localhost:1200
mbak-document-store.ribbon.NIWSServerListClassName:com.netflix.loadbalancer.ConfigurationBasedServerList
mbak-document-store.ribbon.listOfServers: localhost:1200