sse-jmx

The aim of this library is to make working with JMX in Scala simpler.

Usage

Exporting your Scala objects to JMX

You can export any Scala object as ModelMBean by using the MBeanExporter class. The MBeanExporter uses a configured MBeanInfoAssembler (by default AnnotationMBeanInfoAssembler to create an MBean model using reflection from the object's class. The library ships with two implementations of the MBeanInfoAssembler trait, AnnotationMBeanInfoAssembler and SimpleMBeanInfoAssembler.

SimpleMBeanInfoAssembler will generate a model with an operation for every method that takes no arguments and returns Unit, an attribute for every var and a read-only attribute for every method that takes no arguments and returns non-Unit value (usually a val).

AnnotationMBeanInfoAssembler maps Scala elements annotated with the @Managed annotation to MBean operations and attributes. Annotated defs become operations, annotated vars become attributes and annotated vals become read-only attributes.

The ObjectName of an exported object is determined by a configured ObjectNamingStratety or it is specified explicitly. The name can be explicitly specified when the object is registered or using the @ManagedResource annotation.

In the below example code we have a Cache class that is annotated with the @Managed annotation and exported using an MBeanExporter with the default configuration.

class Cache {

  @Managed(readOnly=true)
  var size: Int

  @Mavaged
  def evict(key: String) { /* ... */ }

  // the cache implementation...
}

class MyApplication {
  val myCache = new Cache
  val exporter = new MBeanExporter
  exporter.export(myCache)
}

Maven

<dependency>
  <groupId>com.tzavellas</groupId>
  <artifactId>sse-jmx</artifactId>
  <version>0.4.2</version>
</dependency>

License

Licensed under the Apache License, Version 2.0. See the LICENSE and NOTICE files for more information.