tracing: Distributed tracing

[ bsd3, library, web ] [ Propose Tags ]

An OpenTracing-compliant, simple, and extensible distributed tracing library.

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Dependencies aeson (>=1.4), base (>=4.9 && <5), base16-bytestring (>=0.1 && <, bytestring (>=0.10), case-insensitive (>=1.2), containers (>=0.6), http-client (>=0.5), mtl (>=2.2), network (>=2.8), random (>=1.1), stm (>=2.5), text (>=1.2), time (>=1.8), transformers (>=0.5), unliftio (>=0.2) [details]
License BSD-3-Clause
Copyright 2020 Matthieu Monsch
Author Matthieu Monsch
Category Web
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Source repo head: git clone
Uploaded by mtth at 2020-11-12T16:25:20Z
Distributions NixOS:, Stackage:
Downloads 3575 total (8 in the last 30 days)
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Status Hackage Matrix CI
Docs available [build log]
Last success reported on 2020-11-12 [all 1 reports]


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An OpenTracing-compliant, simple, and extensible distributed tracing library.

  • Simple: add a single MonadTrace constraint to start tracing, without making your code harder to test!
  • Extensible: use the built-in Zipkin backend or hook in your own trace publication logic.
import Monitor.Tracing

-- A traced action with its root span and two children.
run :: MonadTrace m => m ()
run = rootSpan alwaysSampled "parent" $ do
  childSpan "child-a" runA
  childSpan "child-b" runB

To learn more, hop on over to Monitor.Tracing, or take a look at examples in the examples/ folder.