JarCastingeasy-agent-plugin-istio-tracing
This project is plugin of easy-agent for istio distributed tracing.
Istio distributed tracing : https://istio.io/docs/tasks/observability/distributed-tracing/
How to use
1. Add dependency to pom.xml (maven)
<dependency>
<groupId>software.fitz</groupId>
<artifactId>easy-agent-core</artifactId>
<version>0.4.0-RELEASE</version>
</dependency>
<dependency>
<groupId>software.fitz</groupId>
<artifactId>easy-agent-plugin-istio-tracing</artifactId>
<version>0.4.0-RELEASE</version>
</dependency>
2. Initialize the easy-agent and add IstioInterceptor in your premain-class
public class PremainClass {
public static void premain(String agentArgs, Instrumentation instrumentation) {
EasyAgentBootstrap.initialize(agentArgs, instrumentation)
.addPlugin(new IstioDistributedTracePlugin())
.start();
}
}
3. Add maven plugin to your pom.xml for build agent jar
- Replace
{your-jar-name}with the name of the jar you want. - Replace
{package.to.premain-class}with a class that implements thepremainmethod.
Reference : easy-agent repository
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<version>2.2</version>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
<configuration>
<finalName>{your-jar-name}</finalName>
<appendAssemblyId>false</appendAssemblyId>
<archive>
<manifest>
<addDefaultImplementationEntries>true</addDefaultImplementationEntries>
<addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
</manifest>
<manifestEntries>
<Premain-Class>{package.to.premain-class}</Premain-Class>
<Can-Retransform-Classes>true</Can-Retransform-Classes>
<Can-Redefine-Classes>true</Can-Redefine-Classes>
<Boot-Class-Path>{your-jar-name}.jar</Boot-Class-Path>
</manifestEntries>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</execution>
</executions>
</plugin>
4. Used it
Pass your agent jar file path to JVM argument
java -javaagent:/path/{your-agent}.jar -jar application.jar