package trace

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A stub for tracing/observability, agnostic in how data is collected

Install

Dune Dependency

github.com Readme Changelog Edit opam file Versions (11)

Authors

S

Simon Cruanes

Maintainers

S

Simon Cruanes

Sources

trace-0.8.tbz

sha256=34cfa5662b611c1e246f0fb8131ee605eeb90b359c105e882f51adc7e70878c3

sha512=ea47974a77a0ab26c58fe6d1bc898d4f3e6a5f865e4c1acb4188b9acd7ba8e7527d0ea7f2ae66574ceccc14f11127ee203aedba2be334d17b36c83dabff61261

doc/trace.subscriber/Trace_subscriber/Subscriber/index.html

Module `Trace_subscriber.Subscriber`Source

Trace subscribers

Sourcetype t =

| Sub : {
1. st : 'st;
2. callbacks : 'st Callbacks.t;
} -> t

A trace subscriber. It pairs a set of callbacks with the state they need (which can contain a file handle, a socket to write events to, config, etc.).

The design goal for this is that it should be possible to avoid allocations whenever the trace collector invokes the callbacks.

Sourceval dummy : t

Dummy subscriber that ignores every call.

Sourceval tee : t -> t -> t

tee s1 s2 is a subscriber that forwards every call to s1 and s2 both.

Sourceval tee_l : t list -> t

Tee multiple subscribers, ie return a subscriber that forwards to all the subscribers in subs.