Trait/Object

com.twitter.finagle.tracing

Tracer

Related Docs: object Tracer | package tracing

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trait Tracer extends AnyRef

Tracers record trace events.

Linear Supertypes
AnyRef, Any
Known Subclasses
BufferingTracer, ConsoleTracer, DefaultTracer, NullTracer, NullTracer
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Abstract Value Members

  1. abstract def record(record: Record): Unit

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  2. abstract def sampleTrace(traceId: TraceId): Option[Boolean]

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    Should we sample this trace or not? Could be decided that a percentage of all traces will be let through for example.

    Should we sample this trace or not? Could be decided that a percentage of all traces will be let through for example. True: keep it False: false throw the data away None: i'm going to defer making a decision on this to the child service

    See also

    Tracer.SomeTrue and Tracer.SomeFalse as constant return values.

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. final def asInstanceOf[T0]: T0

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    Any

  5. def clone(): AnyRef

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    Attributes
    protected[java.lang]
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    AnyRef
    Annotations
    @throws( ... )

  6. final def eq(arg0: AnyRef): Boolean

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  7. def equals(arg0: Any): Boolean

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  8. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  9. final def getClass(): Class[_]

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    Definition Classes
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  10. def hashCode(): Int

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    Definition Classes
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  11. def isActivelyTracing(traceId: TraceId): Boolean

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    Is this tracer actively tracing this traceId?

    Is this tracer actively tracing this traceId?

    Return: If TraceId.sampled == None sampleTrace() has not been called yet or the tracer still wants to receive traces but not make the decision for child services. In either case return true so that this tracer is still considered active for this traceId.

    If TraceId.sampled == Some(decision) sampleTrace() has already been called, or a previous service has already made a decision whether to sample this trace or not. So respect that decision and return it.

  12. final def isInstanceOf[T0]: Boolean

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    Definition Classes
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  13. def isNull: Boolean

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    Indicates whether or not this tracer instance is NullTracer.

  14. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
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  15. final def notify(): Unit

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    Definition Classes
    AnyRef

  16. final def notifyAll(): Unit

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    Definition Classes
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  17. final def synchronized[T0](arg0: ⇒ T0): T0

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  18. def toString(): String

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  19. final def wait(): Unit

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    @throws( ... )

  20. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
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    Annotations
    @throws( ... )

  21. final def wait(arg0: Long): Unit

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