问题描述
我想在Spring应用程序中配置Jaeger.我不知何故找不到合适的方法来做到这一点.几乎所有与Spring-Jaeger相关的文档都是针对Spring Boot的，其中大多数属性都是自动配置的.这是我的方法.Maven依赖项:
I would like to configure Jaeger in my Spring application. Somehow I cannot find a proper way to do this. Almost all Spring-Jaeger-related documentation is for Spring Boot where most of the properties are auto configured. Here's my approach.Maven dependency:
<dependency>
<groupId>io.opentracing.contrib</groupId>
<artifactId>opentracing-spring-jaeger-cloud-starter</artifactId>
<version>1.0.3</version>
</dependency>
Jaeger的Spring配置:
Spring config for Jaeger:
@Configuration
public class JagerConfiguration {
@Bean
public io.opentracing.Tracer jaegerTracer() {
Map<String, String> tags = new HashMap<>();
tags.put(Constants.TRACER_HOSTNAME_TAG_KEY, "localhost");
CompositeReporter reporter = new CompositeReporter(new LoggingReporter(), remoteReporter());
return new Builder("myTestSpringApp")
.withSampler(new ConstSampler(true))
.withMetricsFactory(new InMemoryMetricsFactory())
.withReporter(remoteReporter())
.withTags(tags)
.build();
}
@Bean
public RemoteReporter remoteReporter() {
return new RemoteReporter.Builder().withSender(new UdpSender("localhost", 6831, 0)).build();
}
}
Jaeger在docker的本地端口6831上运行.
Jaeger is running locally in docker on port 6831.
docker run -d -p6831:6831/udp -p16686:16686 jaegertracing/all-in-one:latest
一旦我的应用程序启动，我注意到该应用程序的运行速度大大降低，我认为这是因为LoggingReporter将大量指标记录到控制台中.
Once my application starts, I noticed that application slows down considerably, I assume that is because of metrics logged heavily to console by LoggingReporter.
但是，我的Spring应用程序未显示在Jaeger UI中.首先，我想跟踪我的REST端点.有人可以向我指出正确的方向，为什么我的应用程序从UI中丢失以及我如何正确配置Jaeger? Spring + Jaeger可能有一个不依赖于过时的Jaeger的示例项目吗?
However, My Spring app does not show up in Jaeger UI. In the beginning I would like to trace my REST endpoints. Can someone point me in the right direction why my app is missing from UI and how I configure Jaeger properly? Is there perhaps a sample project with Spring+Jaeger that does not rely on outdated Jaeger?
推荐答案
如果其他人想在Spring项目中设置Jaeger，我会这样做:
If anyone else would like to set up Jaeger in spring project, here's what I did:
将依赖项添加到pom:
Add dependencies to pom:
<properties>
<opentracing.spring.web.version>0.3.4</opentracing.spring.web.version>
<opentracing.jdbc.version>0.0.12</opentracing.jdbc.version>
<opentracing.spring.configuration.starter.version>0.1.0</opentracing.spring.configuration.starter.version>
<opentracing.spring.jaeger.starter.version>0.2.2</opentracing.spring.jaeger.starter.version>
</properties>
<dependency>
<groupId>io.opentracing.contrib</groupId>
<artifactId>opentracing-spring-web-starter</artifactId>
<version>${opentracing.spring.web.version}</version>
</dependency>
<dependency>
<groupId>io.opentracing.contrib</groupId>
<artifactId>opentracing-jdbc</artifactId>
<version>${opentracing.jdbc.version}</version>
</dependency>
<dependency>
<groupId>io.opentracing.contrib</groupId>
<artifactId>opentracing-spring-tracer-configuration-starter</artifactId>
<version>${opentracing.spring.configuration.starter.version}</version>
</dependency>
<dependency>
<groupId>io.opentracing.contrib</groupId>
<artifactId>opentracing-spring-jaeger-starter</artifactId>
<version>${opentracing.spring.jaeger.starter.version}</version>
</dependency>
将您的web.xml设置为注册新的跟踪过滤器 tracingFilter 来拦截REST API:
Set up you web.xml to register new tracing filter tracingFilter to intercept REST API:
<filter>
<filter-name>tracingFilter</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
<async-supported>true</async-supported>
</filter>
<filter-mapping>
<filter-name>tracingFilter</filter-name>
<url-pattern>/api/*</url-pattern>
</filter-mapping>
在spring mvc中注册jaeger跟踪器:
Register jaeger tracer in spring mvc:
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**" />
<bean class="io.opentracing.contrib.spring.web.interceptor.TracingHandlerInterceptor">
<constructor-arg ref="jaegerTracer" />
</bean>
</mvc:interceptor>
</mvc:interceptors>
设置我们在web.xml中描述的 tracingFilter bean:
Set up the tracingFilter bean we described in web.xml:
import io.opentracing.Tracer;
import io.opentracing.contrib.web.servlet.filter.TracingFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
@Configuration
public class JaegerFilterConfiguration {
@Bean
public TracingFilter tracingFilter(Tracer tracer) {
return new TracingFilter(tracer);
}
}
最后定义Jaeger Tracer弹簧配置:
Finally define jaeger tracer spring configuration:
import io.jaegertracing.internal.JaegerTracer;
import io.jaegertracing.internal.metrics.NoopMetricsFactory;
import io.jaegertracing.internal.reporters.RemoteReporter;
import io.jaegertracing.internal.reporters.RemoteReporter.Builder;
import io.jaegertracing.internal.samplers.ProbabilisticSampler;
import io.jaegertracing.thrift.internal.senders.UdpSender;
import io.opentracing.Tracer;
import io.opentracing.util.GlobalTracer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.context.event.ContextRefreshedEvent;
@Configuration
public class JaegerConfiguration implements ApplicationListener<ContextRefreshedEvent> {
private static final int JAEGER_PORT = 6831;
private static final String JAEGER_HOST = "localhost";
private static final String JAEGER_SERVICE_NAME = "my-awesome-jaeger";
private static final double SAMPLING_RATE = 0.5;
@Autowired
private Tracer tracer;
@Bean
@Primary
public Tracer jaegerTracer(RemoteReporter remoteReporter) {
return new JaegerTracer.Builder(JAEGER_SERVICE_NAME)
.withReporter(remoteReporter)
.withMetricsFactory(new NoopMetricsFactory()).withSampler(new ProbabilisticSampler(SAMPLING_RATE))
.build();
}
@Bean
public RemoteReporter remoteReporter() {
return new Builder().withSender(new UdpSender(JAEGER_HOST, JAEGER_PORT, 0)).build();
}
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
if (!GlobalTracer.isRegistered()) {
GlobalTracer.register(tracer);
}
}
}
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