Tag Archives: springcloud

Solution to the problem of failure to elect leaders when offline service is reported in Nacos

Problem description

When there are multiple instances of a micro service in the Nacos registry, click an instance to go offline and report an error

caused: errCode: 500, errMsg: do metadata operation failed ;
caused: com.alibaba.nacos.consistency.exception.ConsistencyException: com.alibaba.nacos.core.distributed.raft.exception.NoLeaderException: The Raft Group [naming_instance_metadata] did not find the Leader node;
caused: com.alibaba.nacos.core.distributed.raft.exception.NoLeaderException: The Raft Group [naming_instance_metadata] did not find the Leader node;

Solution

Nacos uses the raft algorithm to calculate the leader and will record the cluster address started last time. Therefore, when the IP address of our own server changes (especially the students started locally when we study, because sometimes our network environment will change… WiFi, so the IP address often changes), the cluster address recorded by raft will become invalid, If there is a problem with the selected leader, just delete the protocol folder under the data folder under the root directory of Nacos.

How to Solve “Error db.num is null” when starting Nacos

Nacos startup is divided into stand-alone or cluster. When you start in cluster mode but do not configure the data source that the cluster depends on, the error db.num is null will be reported

Solution

The operation of this paper is based on Windows environment, similar to Linux

Mode 1: single machine mode startup

startup.cmd -m standalone

Start as shown in the figure below:

standalone: independent
at this time, Nacos starts in stand-alone mode

Mode 2: start in cluster mode and configure the data source

Use the conf/nacos-mysql.sql file to initialize the database, and modify the conf/application.properties file to add MySQL support

spring.datasource.platform=mysql
db.num=1
db.url.0=jdbc:mysql://localhost:3306/nacos?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true
db.user=root
db.password=1234

All the above configurations exist in the original configuration. You only need to modify the parameter value
after the modification is successful, start Nacos

startup.bat

Gateway Error: allowedOrigins cannot contain the special value “*“

java.lang.IllegalArgumentException: When allowCredentials is true, allowedOrigins cannot contain 
the special value "*" since that cannot be set on the "Access-Control-Allow-Origin" response 
header. To allow credentials to a set of origins, list them explicitly or consider using "allowedOriginPatterns" instead.
	at org.springframework.web.cors.CorsConfiguration.validateAllowCredentials(CorsConfiguration.java:460)

	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	|_ checkpoint ⇢ org.springframework.cloud.gateway.filter.WeightCalculatorWebFilter [DefaultWebFilterChain][from www.fhadmin.cn]

The reason for the problem is that the new version of gateway cancels allowedorigins and the corresponding change is   allowedOriginPatterns

The configuration is modified to:

#--------gateway config---fhadmin.cn-----
spring.cloud.gateway.discovery.locator.enabled=true
spring.cloud.gateway.discovery.locator.lower-case-service-id=true
#(java fhadmin.cn)
spring.cloud.gateway.globalcors.corsConfigurations.[/**].allowedOriginPatterns=*
spring.cloud.gateway.globalcors.corsConfigurations.[/**].allowedHeaders=*
spring.cloud.gateway.globalcors.corsConfigurations.[/**].allowedMethods=*
spring.cloud.gateway.globalcors.corsConfigurations.[/**].allowCredentials=true

Resolve zuul the HTTP status 500 – internal server error error error displayed after startup

Problem Description:

When I use spring cloud to integrate zuul, the project can run, but when I access through the route, I will be prompted with HTTP status 500 – internal server error error

Causes:

The springboot version is inconsistent with the spring cloud starter Netflix zuul version
before modification, my configuration is as follows:

<?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>2.5.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.cloud</groupId>
    <artifactId>api-gateway-dynamic-route</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>api-gateway-dynamic-route</name>
    <description>api-gateway-dynamic-route</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-eureka-client -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-zuul -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
            <version>2.2.9.RELEASE</version>
        </dependency>
    </dependencies>

</project>

Solution

Change the version of springboot to 2.4.8

<?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>2.4.8</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.cloud</groupId>
    <artifactId>api-gateway-dynamic-route</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>api-gateway-dynamic-route</name>
    <description>api-gateway-dynamic-route</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-eureka-client -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-netflix-zuul -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
            <version>2.2.9.RELEASE</version>
        </dependency>
    </dependencies>
</project>

So far, the problem caused by the version has been solved

[Solved] Eureka related services Start Error: cannot execute request on any known server

Error reporting prompt

DiscoveryClient_SYSTEM-SERVER/localhost:system-server:8851 - was unable to send heartbeat!
com.netflix.discovery.shared.transport.TransportException: Cannot execute request on any 
known server

Error reporting reason

This is the server configuration

My client configuration is like this

 

Solution:

Replace my client address with localhost address and it will run successfully

Here are some methods on the network
first, change the configuration of the. YML file or. Properties file:

#The lowercase letters after underline + underline are equivalent to the letters after uppercase underline without underline (hump principle)

eureka.client.registerWithEureka=false   #whether to register itself to Eureka-Server, default true registerWithEureka is equivalent to register_with_eureka
eureka.client.fetchRegistry=false #whether to pull service information, default is not true fetchRegistry is equivalent to fetch-registry

2、 Unregister dependencies and empty downloaded Eureka dependency packages:

<dependency>
   <groupId>org.springframework.cloud</groupId>
   <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
   <version>2.1.1.RELEASE</version>
</dependency>


三. Refresh the botton: report all maven projects

[Solved] Java.util.linkedhashmap cannot be cast to entity class

Solve the problem of java.util.linkedhashmap cannot be cast to entity class

Background description

When learning about grain mall, openfeign is used for remote call, because an interface returns R < List<· Object>> Type of data, using list <Object> When receiving data, the java.util.linkedhashmap cannot be cast to XXX data conversion exception error occurs. It can be seen that the remote call will convert the data to be converted to LinkedHashMap, but it will not work to convert it to the desired data type.

Solution one

Use typereference in fastjson tool provided by Alibaba to transform.

We add SetData () and GetData () methods to R. when getting data, we use typereference class to indicate the data type. Then convert the map to the JSON string, and then convert the JSON string to the data type we want.

public class R extends HashMap<String, Object> {
	private static final long serialVersionUID = 1L;

	public R setData(Object data){
		put("data",data);
		return this;
	}

	//Reversal with fastjson
	public <T> T getData(TypeReference<T> typeReference){
		Object data = get("data");//Default is map type
		if(Objects.isNull(data)){
			return null;
		}
		String s = JSON.toJSONString(data);
		T t = JSON.parseObject("",typeReference);
		return t;
	}

Caller

        R r = wareFeignService.getSkusHasStock(skuIdList);//Remote calls
        TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
        };// Declare the internal class, specifying the type
        List<SkuHasStockVo> data = r.getData(typeReference);//get data for remote calls

reflection

This problem also occurred when using resttemplate remote call before. This problem was solved before, and the solution steps were not recorded. This time, the solution steps will be recorded to prevent the next step.

Supplementary solution 2

Recently, when reviewing the previous project code, I found a similar problem when using resttemplate remote call mentioned in my thinking. The solution at the time was this.

	import com.alibaba.fastjson.JSON;
	import com.alibaba.fastjson.JSONObject;
	
	//remote call, return the specified collection, but this collection can not be used directly, because he is a LinkedHashMap.
	List<InnerControl> remoteList = restTemplate.getForObject("url", List.class);
	remoteList = transToList(remoteList);// After the conversion, you will be able to use this collection normally.
	
	// Define a method to convert the LinkedHashMap type to the data type we want
	private List<InnerControl> transToList(List<InnerControl> list){
		String jsonStr = JSON.toJSONString(list);//still use the json conversion tool provided by alibaba.
		return JSONObject.parseArray(jsonStr, InnerControl.class);
	}

After introducing security, the service cannot be registered with Eureka

When building the Eureka service of springcloud, security was introduced for security. However, it was found that the Eureka client could not register. The error log is as follows:

DiscoveryClient_ EUREKA-CLIENT/10.168.211.109:8001 – was unable to send heartbeat!

Later, I inquired about the Security version of the project (spring boot starter security in version 2.3.2.release introduces the security configuration of 5.3. X). If the version is too high, it will be changed by default   When CSRF (Cross Site Request Forgery) is turned on, you need to turn it off. The steps are as follows:

Add the following code into the startup file:


    @EnableWebSecurity
    static class WebSecurityConfig extends WebSecurityConfigurerAdapter {
        @Override
        protected void configure(HttpSecurity http) throws Exception {
            http.csrf().disable(); // Close csrf
            super.configure(http);
        }
    }

The test is effective.

Feignexception $unauthorized is reported by introducing security call service

Originally, it was a good idea to study spring cloud. Later, security was introduced for security. Then there were various problems. First, the service could not be registered (solution: after introducing security, the service could not be registered with Eureka), and then the service could not be called,

The error log is as follows:

feign.FeignException$Unauthorized: [401] during [GET] to [ http://eureka-client/client/test ] [ClientService#getClientService()]: [{“timestamp”:”2021-07-08T09:01:18.940+00:00″,”status”:401,”error”:”Unauthorized”,”message”:””,”path”:”/client/test”}]

It’s easy to understand if you read a newspaper error: the call has not been authenticated. This authentication is built-in to security. There are some methods on the Internet, but they are messy and many of them don’t work. Therefore, it’s recommended to turn off the built-in call authentication of security (add logic to the call authentication side to ensure security)

Add a configuration file to the server:

@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
        httpSecurity.authorizeRequests().anyRequest().permitAll().and().logout().permitAll();
    }

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService());
    }

}

Due to the version problem, sometimes you need to add additional notes to the startup file

@SpringBootApplication(exclude = {org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration.class})

The test is effective
 

Java error invaliddefinitionexception

Scenario: this error occurs when transferring parameters between springcloud and seat microservices. A service has the function of uploading files,

Service B needs to call the upload file interface of service A. there is a common parent class reference C between a and B.

The method defined in C is

@RequestMapping(“/file/upload”) public R uploadFile(MultipartFile file);

The method defined in a is

@RequestMapping(“/file/upload”) public R uploadFile(MultipartFile file){ … }

Call statements defined in B

b.uploadFile(file);

After writing in this way, report an error, such as the title

Add the annotation @ requestparam before the request parameter file in methods a and C.

 

Eureka failed to register error: saw local status change event statuschangeevent

The original usage of adding dependency is as follows:

dependencies {
    
    compile(” org.springframework.cloud :spring-cloud-starter-netflix-eureka- client:2.0.4.RELEASE “)

}

When starting, an error will be prompted: [warn] [2020-08-18 14:45:15.922] [main] com.netflix.discovery .DiscoveryClient [1297] – Saw local status change event StatusChangeEvent [timestamp=1597733115922, current=DOWN, previous=UP]

 

Later, it was found that the problem was how to write the service name

Add the dependency as follows:

dependencies {
    
    compile(” org.springframework.cloud :spring-cloud-starter-netflix-eureka- client:2.0.4.RELEASE “)

    compile(” org.apache.commons :commons-lang3:3.8.1″)
}

The service can be registered to Eureka

 

com.netflix.zuul.exception.ZuulException: Forwarding error

The solution


hystrix:
  command:
    default:
      execution:
        isolation:
          thread:
            timeoutInMilliseconds: 60000 

ribbon:  
  ReadTimeout: 60000  
  ConnectTimeout: 60000  

zuul:
  host: 
    connect-timeout-millis: 10000
    socket-timeout-millis: 60000

Depending on the situation, it might be the Ribbon, or you don’t need to set the ribbon

2018-01-30 10:27:43.315 WARN  [http-nio-9999-exec-1] [hio-gateway] o.s.c.n.z.f.post.SendErrorFilter - Error during filtering
com.netflix.zuul.exception.ZuulException: Forwarding error
    at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.handleException(RibbonRoutingFilter.java:170)
    at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.forward(RibbonRoutingFilter.java:145)
    at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.run(RibbonRoutingFilter.java:88)
    at com.netflix.zuul.ZuulFilter.runFilter(ZuulFilter.java:112)
    at com.netflix.zuul.FilterProcessor.processZuulFilter(FilterProcessor.java:193)
    at com.netflix.zuul.FilterProcessor.runFilters(FilterProcessor.java:157)
    at com.netflix.zuul.FilterProcessor.route(FilterProcessor.java:118)
    at com.netflix.zuul.ZuulRunner.route(ZuulRunner.java:96)
    at com.netflix.zuul.http.ZuulServlet.route(ZuulServlet.java:116)
    at com.netflix.zuul.http.ZuulServlet.service(ZuulServlet.java:81)
    at org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:157)
    at org.springframework.cloud.netflix.zuul.web.ZuulController.handleRequest(ZuulController.java:44)
    at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:50)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.boot.web.filter.ApplicationContextHeaderFilter.doFilterInternal(ApplicationContextHeaderFilter.java:55)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:105)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.cloud.sleuth.instrument.web.TraceFilter.doFilter(TraceFilter.java:150)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:107)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)
Caused by: com.netflix.client.ClientException: null
    at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:123)
    at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:81)
    at org.springframework.cloud.netflix.zuul.filters.route.support.AbstractRibbonCommand.run(AbstractRibbonCommand.java:96)
    at org.springframework.cloud.netflix.zuul.filters.route.support.AbstractRibbonCommand.run(AbstractRibbonCommand.java:42)
    at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:301)
    at com.netflix.hystrix.HystrixCommand$2.call(HystrixCommand.java:297)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:46)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:48)
    at rx.internal.operators.OnSubscribeMap.call(OnSubscribeMap.java:33)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:41)
    at rx.internal.operators.OnSubscribeDoOnEach.call(OnSubscribeDoOnEach.java:30)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:51)
    at rx.internal.operators.OnSubscribeDefer.call(OnSubscribeDefer.java:35)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.subscribe(Observable.java:10307)
    at rx.Observable.subscribe(Observable.java:10274)
    at rx.internal.operators.BlockingOperatorToFuture.toFuture(BlockingOperatorToFuture.java:51)
    at rx.observables.BlockingObservable.toFuture(BlockingObservable.java:412)
    at com.netflix.hystrix.HystrixCommand.queue(HystrixCommand.java:377)
    at com.netflix.hystrix.HystrixCommand.execute(HystrixCommand.java:343)
    at org.springframework.cloud.netflix.zuul.filters.route.RibbonRoutingFilter.forward(RibbonRoutingFilter.java:139)
    ... 74 common frames omitted
Caused by: java.lang.RuntimeException: java.net.SocketTimeoutException: Read timed out
    at rx.exceptions.Exceptions.propagate(Exceptions.java:58)
    at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:465)
    at rx.observables.BlockingObservable.single(BlockingObservable.java:342)
    at com.netflix.client.AbstractLoadBalancerAwareClient.executeWithLoadBalancer(AbstractLoadBalancerAwareClient.java:102)
    ... 137 common frames omitted
Caused by: java.net.SocketTimeoutException: Read timed out
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
    at java.net.SocketInputStream.read(SocketInputStream.java:171)
    at java.net.SocketInputStream.read(SocketInputStream.java:141)
    at org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137)
    at org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153)
    at org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:282)
    at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:140)
    at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
    at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259)
    at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163)
    at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:167)
    at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273)
    at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:271)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:107)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
    at org.springframework.cloud.netflix.ribbon.apache.RetryableRibbonLoadBalancingHttpClient$1.doWithRetry(RetryableRibbonLoadBalancingHttpClient.java:94)
    at org.springframework.cloud.netflix.ribbon.apache.RetryableRibbonLoadBalancingHttpClient$1.doWithRetry(RetryableRibbonLoadBalancingHttpClient.java:72)
    at org.springframework.retry.support.RetryTemplate.doExecute(RetryTemplate.java:276)
    at org.springframework.retry.support.RetryTemplate.execute(RetryTemplate.java:157)
    at org.springframework.cloud.netflix.ribbon.apache.RetryableRibbonLoadBalancingHttpClient.executeWithRetry(RetryableRibbonLoadBalancingHttpClient.java:107)
    at org.springframework.cloud.netflix.ribbon.apache.RetryableRibbonLoadBalancingHttpClient.execute(RetryableRibbonLoadBalancingHttpClient.java:72)
    at org.springframework.cloud.netflix.ribbon.apache.RetryableRibbonLoadBalancingHttpClient.execute(RetryableRibbonLoadBalancingHttpClient.java:52)
    at com.netflix.client.AbstractLoadBalancerAwareClient$1.call(AbstractLoadBalancerAwareClient.java:109)
    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$3$1.call(LoadBalancerCommand.java:303)
    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$3$1.call(LoadBalancerCommand.java:287)
    at rx.internal.util.ScalarSynchronousObservable$3.call(ScalarSynchronousObservable.java:231)
    at rx.internal.util.ScalarSynchronousObservable$3.call(ScalarSynchronousObservable.java:228)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeConcatMap$ConcatMapSubscriber.drain(OnSubscribeConcatMap.java:286)
    at rx.internal.operators.OnSubscribeConcatMap$ConcatMapSubscriber.onNext(OnSubscribeConcatMap.java:144)
    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:185)
    at com.netflix.loadbalancer.reactive.LoadBalancerCommand$1.call(LoadBalancerCommand.java:180)
    at rx.Observable.unsafeSubscribe(Observable.java:10211)
    at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:94)
    at rx.internal.operators.OnSubscribeConcatMap.call(OnSubscribeConcatMap.java:42)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:48)
    at rx.internal.operators.OnSubscribeLift.call(OnSubscribeLift.java:30)
    at rx.Observable.subscribe(Observable.java:10307)
    at rx.Observable.subscribe(Observable.java:10274)
    at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:445)
    ... 139 common frames omitted