package trace-tef

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in-package search v0.2.0

A simple backend for trace, emitting Catapult/TEF JSON into a file

Install

dune-project

Dependency

sha256=97cc4159b96429adc01a84bff1ed34b8f06746bc56a40a214a6306036be2df38

sha512=6a67ea9ddeebb4b93a0b8dba9ed26d95e786722d08fd9ca7d8e2db7651a9b9d6ccc63cc437b4eb71c28b3ec51838716a84707a8d366abb595f32a5e65035e28b

val collector : 
  out:[ `File of string | `Stderr | `Stdout ] ->
  unit ->
  Trace_core.collector

Make a collector that writes into the given output. See setup for more details.

Sourcetype output = [

]

Output for tracing.

Sourceval setup : ?out:[ output | `Env ] -> unit -> unit

setup () installs the collector depending on out.

parameter out
can take different values:
- regular output value to specify where events go
- `Env will enable tracing if the environment variable "TRACE" is set.

If it's set to "1", then the file is "trace.json".
If it's set to "stdout", then logging happens on stdout (since 0.2)
If it's set to "stderr", then logging happens on stdout (since 0.2)
Otherwise, if it's set to a non empty string, the value is taken to be the file path into which to write.

Sourceval with_setup : ?out:[ output | `Env ] -> unit -> (unit -> 'a) -> 'a

with_setup () f (optionally) sets a collector up, calls f(), and makes sure to shutdown before exiting. since 0.2 a () argument was added.