partisan_telemetry (partisan v6.0.0)
View SourceThin wrapper around telemetry:execute/3 used by every [partisan, ...] event
in the codebase (see telemetry.md).
It exists to stop two things from drifting as new events are added: every event
needs node => partisan:node() in its metadata, and a delta-counter event's
measurement (count => 1, meant to be summed into a rate) must never be
confused with a gauge's live value — see count/2 vs execute/3.
Summary
Functions
Emits a delta-counter event: #{count => 1}, meant to be summed over a window
into a rate. count is reserved for this meaning — a gauge's live value must
use a different measurement key (e.g. size, total, value).
Emits a telemetry event, injecting node => partisan:node() into Metadata
(an explicit node key in Metadata wins). Use directly for gauges and any
event with its own measurement shape; use count/2 for a pure delta counter.
Functions
Emits a delta-counter event: #{count => 1}, meant to be summed over a window
into a rate. count is reserved for this meaning — a gauge's live value must
use a different measurement key (e.g. size, total, value).
Emits a telemetry event, injecting node => partisan:node() into Metadata
(an explicit node key in Metadata wins). Use directly for gauges and any
event with its own measurement shape; use count/2 for a pure delta counter.