Package org.eclipse.microprofile.metrics.annotation

Annotation Type SimplyTimed

  • @Inherited
@Documented
@InterceptorBinding
@Retention(RUNTIME)
@Target({TYPE,CONSTRUCTOR,METHOD,ANNOTATION_TYPE})
public @interface SimplyTimed
    An annotation for marking a method, constructor, or class as simply timed. The underlying SimpleTimer metric tracks elapsed time duration and count. This is a lightweight alternative to timer (@Timed). The metric will be registered in the application MetricRegistry.

    Given a method annotated with @SimplyTimed like this: 

    
     @SimplyTimed(name = "fancyName")
     public String fancyName(String name) {
         return "Sir Captain " + name;
     }
    A simple timer with the fully qualified class name + fancyName will be created and each time the #fancyName(String) method is invoked, the method's execution will be timed.

    Given a class annotated with @SimplyTimed like this: 

    
     @SimplyTimed
     public class SimplyTimedBean {
         public void simplyTimedMethod1() {}
         public void simplyTimedMethod2() {}
     }
    A simple timer for the defining class will be created for each of the constructors/methods. Each time a constructor/method is invoked, the execution will be timed with the respective simple timer. This annotation will throw an IllegalStateException if the constructor/method is invoked, but the metric no longer exists in the MetricRegistry.

    • Optional Element Summary

      Optional Elements 
      Modifier and Type Optional Element Description
      boolean absolute  
      java.lang.String description  
      java.lang.String displayName  
      java.lang.String name  
      boolean reusable
      Denotes if this metric instance can be reused by multiple registrations.
      java.lang.String[] tags  
      java.lang.String unit  

    • Element Detail

      • name

        java.lang.String name
        Returns:
        The name of the simple timer.
        Default:
        ""

      • tags

        java.lang.String[] tags
        Returns:
        The tags of the simple timer. Each String tag must be in the form of 'key=value'. If the input is empty or does not contain a '=' sign, the entry is ignored.
        See Also:
        Metadata
        Default:
        {}

      • absolute

        boolean absolute
        Returns:
        If true, use the given name as an absolute name. If false (default), use the given name relative to the annotated class. When annotating a class, this must be false.
        Default:
        false

      • displayName

        java.lang.String displayName
        Returns:
        The display name of the simple timer.
        See Also:
        Metadata
        Default:
        ""

      • description

        java.lang.String description
        Returns:
        The description of the simple timer
        See Also:
        Metadata
        Default:
        ""

      • reusable

        boolean reusable
        Denotes if this metric instance can be reused by multiple registrations.
        Returns:
        false if not reusable, true otherwise
        Default:
        false