Jaeger instrumentation for Spring Cloud RxJava

user_9291851 0
Viewed 826

I'm trying to instrument a Spring Cloud RxJava sample app with Jaeger, and for some reason I'm failing!

I have a couple of other SpringCloud apps, like Hystrix, JDBC and JMS working fine with the tracing being reported to Jeager by just adding the maven dependency to it.

For RxJava, on the other hand, I can't figure it out why I'm not able to follow the same approach...

When I leave the App without a Tracer @Bean, I don't get anything in Jaeger and I get this message:

Tracer bean is not configured! Switching to NoopTracer

All the other SpringCloud apps are working without the Tracer @Bean, so I was expecting the same behavior for the RxJava...

The worst part is that whenever I add the Tracer @Bean, the bean is initialized, but still no data is sent to Jaeger... Not sure if it is related to this message:

Bean 'tracer' of type [io.jaegertracing.Tracer] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)

Does anyone have any idea?

Do I need to set anything in the application.properties?

I'm posting below my pom.xml file:

<?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>2.3.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example.springcloud</groupId>
    <artifactId>rxjava</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>rxjava</name>
    <description>RxJava Spring Cloud</description>

    <properties>
        <java.version>11</java.version>
        <spring-cloud.version>Hoxton.SR6</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>io.opentracing.contrib</groupId>
            <artifactId>opentracing-spring-cloud-starter</artifactId>
            <version>0.5.7</version>
        </dependency>
        <dependency>
            <groupId>io.opentracing.contrib</groupId>
            <artifactId>opentracing-spring-cloud-starter-jaeger</artifactId>
            <version>0.1.13</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
            <version>2.3.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>io.reactivex</groupId>
            <artifactId>rxjava</artifactId>
            <version>1.3.8</version>
        </dependency>
        <dependency>
            <groupId>io.opentracing</groupId>
            <artifactId>opentracing-util</artifactId>
            <version>0.32.0</version>
        </dependency>
        <dependency>
            <groupId>io.opentracing</groupId>
            <artifactId>opentracing-api</artifactId>
            <version>0.32.0</version>
        </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>

Sample app committed here: https://github.com/julianocosta89/rxjava-jeager

jaeger maven spring java
1 Answers

Update:

I got the same exception (Tracer bean is not configured!..) when I use your version of spring cloud jaeger dependencies. This is irrespective of the RxJava package.

I think you can directly use opentracing-spring-jaeger-cloud-starter which is a combination of opentracing-spring-cloud-starter and opentracing-spring-jaeger-starter. Read this details for java spring jaeger.

The opentracing-spring-jaeger-cloud-starter starter is convenience starter that includes both opentracing-spring-jaeger-starter and opentracing-spring-cloud-starter This means that by including it, all parts of the Spring Cloud stack supported by Opentracing will be instrumented

Note:

Maybe RxJava tracing won't work without registering the tracer using the decorators provided by opentracing-contrib. Please see the working app here.

I have followed this spring guide for Reactive Restful webservice and jaeger worked with below pom.xml without any Tracer bean -

<?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>2.3.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.spring.opentrace</groupId>
    <artifactId>jaeger</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>jaeger</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>11</java.version>
        <spring-cloud.version>Hoxton.SR6</spring-cloud.version>
    </properties>
    <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>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-webflux</artifactId>
        </dependency>
        
        <dependency>
          <groupId>io.opentracing.contrib</groupId>
          <artifactId>opentracing-spring-jaeger-cloud-starter</artifactId>
          <version>3.2.0</version>
        </dependency>
       <dependency>
          <groupId>io.reactivex</groupId>
          <artifactId>rxjava</artifactId>
          <version>1.3.8</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>
user_35030190
Related