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title: Observability keywords: [“Observability”] description: Observability access

This article introduces the Apache ShenYu Agent module.

Java agent

Apache ShenYu uses java agent and bytecode enhancement technology to achieve seamless embedding, so that users can access third-party observability systems without introducing dependencies, and obtain Traces, Metrics and Logging.

Tracing

Link tracking, call chain data is collected via probes and third party systems (Jaeger, Zipkin) to pull the data and then display it.

Metrics

System statistics metrics, collected by probes, are written to third-party timing databases such as prometheus and then displayed.

Logging

Take the shenyu gateway log information, write it to elasticSearch (or send it to the messaging middleware), and display it.

Download and compile the code

• Download code

git clone https://github.com/apache/incubator-shenyu.git

• Use Maven to compile the code

cd incubator-shenyu
mvn clean install -Dmaven.javadoc.skip=true -B -Drat.skip=true -Djacoco.skip=true -DskipITs -DskipTests

After the compilation is successful, you can see the compiled jar package and related configuration files of the shenyu-agent module in the ~/shenyu/shenyu-dist/shenyu-agent-dist/target/shenyu-agent directory.

.
├── conf
│   ├── logback.xml
│   ├── shenyu-agent.yaml
│   └── tracing-point.yaml
├── plugins
│   ├── shenyu-agent-plugin-xxx.jar
└── shenyu-agent.jar

shenyu-agent.yaml

appName: shenyu-agent
supports:
  tracing:
    - pluginName
  metrics:
    - pluginName
  logging:
    - pluginName
  
plugins:
  tracing:
    pluginName:
      host: 
      port:
      props:
  metrics:
    pluginName:
      host: 
      port:
      props:
  logging:
    pluginName:
      host: 
      port:
      props:

• Select the plugin to be used in supports
• Configure the parameters of the plug-in in plugins. The specific usage of each plug-in props parameter is shown in the following tables:

For use

For deployment, please refer to Binary Packages Deployment or Docker Deployment

Developers can add the -javaagent parameter to the JVM parameter of the IDE startup configuration, please refer to Local debug and run agent module.