opengleametry/span

set_attributes

pub fn set_attributes(attributes: List(#(String, String))) -> Nil

Wraps opentelemetry_api ?set_attributes macro. Needs a current span.

set_error

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pub fn set_error(error_message: String) -> Nil

Wraps opentelemetry_api ?set_status(error, _) macro Needs a current span.

url_scheme

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pub const url_scheme: String

use_in_this_process

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pub fn use_in_this_process(
  current: otel.OtelContext,
  context: SpanContext,
) -> Nil

Create a span based on both the otel and span context from the parent process. Use this method when you do the processing in an actor, and send some result back. NB: the span is not ended, the parent process is expected to do that. By using with or with_links this happens automatically for you.

with

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pub fn with(
  name: String,
  attributes: List(#(String, String)),
  f: fn(SpanContext) -> a,
) -> a

Create a basic span context.

If there is anything that your application needs from this library, it is this function.

with_links

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pub fn with_links(
  name: String,
  links: List(link.Link),
  attributes: List(#(String, String)),
  f: fn(SpanContext) -> a,
) -> a

Create a span with links obtained within span contexts.

This is explicitly meant in OTEL for usage in asynchronous processing, possibly at some later time (even after a reboot of the application).

In the OTEL UI of your choice, you can track back to the origin, when you investigate an error in this asynchronous handling.

opengleametry - v1.1.0

Types

SpanContext