trait Tracer[F[_]] extends AnyRef
Tracer acts as an abstraction layer over tracing.
General idea is to create span around fa: F[A], evaluate the results of F[A] and report span to underlying
tracing solution.
Usage:
tracer.trace("fetch_user", "user_id" -> Tag.int(42)) { readFromDB(userId=42) } //the moment `readFromDB` is evaluated, span "fetch_user" is finished
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Abstract Value Members
- abstract def trace[A](operationName: String, parent: Option[Context], tags: (String, Tag)*)(fa: F[A]): F[A]
Same as basic
tracebut with explicit optional parent's context.Same as basic
tracebut with explicit optional parent's context. Usually used on the edge of tracing initialization in combination with TraceCarrier- operationName
name of span
- parent
parent context to use
- tags
tags to add to span
- fa
operation to trace
- abstract def trace[A](operationName: String, parent: Span, tags: (String, Tag)*)(fa: F[A]): F[A]
Same as basic
tracebut with explicit parent setSame as basic
tracebut with explicit parent set- operationName
name of span
- parent
parent span to use
- tags
tags to add to span
- fa
operation to trace
- abstract def trace[A](operationName: String, tags: (String, Tag)*)(fa: F[A]): F[A]
Traces evaluation of
fa.Traces evaluation of
fa. Implementation might use parent span extracted from context ofF[_]if it exists.Example of effect that could carry span information:
io.monix.TaskwithTaskLocal,Kleisli,StateT- operationName
name of span
- tags
tags to add to span
- fa
operation to trace
- abstract def traceWith[A](operationName: String, parent: Option[Context], tags: (String, Tag)*)(fa: (Span) => F[(Span, A)]): F[A]
Same as basic
traceWithbut with explicit optional parent's context.Same as basic
traceWithbut with explicit optional parent's context. Usually used on the edge of tracing initialization in combination with TraceCarrier- operationName
name of span
- parent
parent context to use
- tags
tags to add to span
- fa
function that accepts span and returns potentially modified one together with evaluation results
- abstract def traceWith[A](operationName: String, parent: Span, tags: (String, Tag)*)(fa: (Span) => F[(Span, A)]): F[A]
Same as basic
traceWithbut with explicit parent setSame as basic
traceWithbut with explicit parent set- operationName
name of span
- parent
parent context to use
- tags
tags to add to span
- fa
function that accepts span and returns potentially modified one together with evaluation results
- abstract def traceWith[A](operationName: String, tags: (String, Tag)*)(fa: (Span) => F[(Span, A)]): F[A]
Traces evaluation of
fa.Traces evaluation of
fa. Implementation might use parent span extracted from context ofF[_]if it exists. It's possible to operate on the span after it was created but before it's committed, i.e. add tags & logs- operationName
name of span
- tags
tags to add to span
- fa
function that accepts span and returns potentially modified one together with evaluation results
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